ZHCSBC2F October   2012  – December 2014 ADS42JB49 , ADS42JB69

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics: ADS42JB69 (16-Bit)
    6. 7.6  Electrical Characteristics: ADS42JB49 (14-Bit)
    7. 7.7  Electrical Characteristics: General
    8. 7.8  Digital Characteristics
    9. 7.9  Timing Characteristics
    10. 7.10 Typical Characteristics: ADS42JB69
    11. 7.11 Typical Characteristics: ADS42JB49
    12. 7.12 Typical Characteristics: Common
    13. 7.13 Typical Characteristics: Contour
      1. 7.13.1 Spurious-Free Dynamic Range (SFDR): General
      2. 7.13.2 Signal-to-Noise Ratio (SNR): ADS42JB69
      3. 7.13.3 Signal-to-Noise Ratio (SNR): ADS42JB49
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Digital Gain
      2. 9.3.2 Input Clock Divider
      3. 9.3.3 Overrange Indication
      4. 9.3.4 Pin Controls
    4. 9.4 Device Functional Modes
      1. 9.4.1 JESD204B Interface
        1. 9.4.1.1 JESD204B Initial Lane Alignment (ILA)
        2. 9.4.1.2 JESD204B Test Patterns
        3. 9.4.1.3 JESD204B Frame Assembly
        4. 9.4.1.4 JESD Link Configuration
          1. 9.4.1.4.1 Configuration for 2-Lane (20x) SERDES Mode
          2. 9.4.1.4.2 Configuration for 4-Lane (10x) SERDES Mode
        5. 9.4.1.5 CML Outputs
    5. 9.5 Programming
      1. 9.5.1 Device Configuration
      2. 9.5.2 Details of Serial Interface
        1. 9.5.2.1 Register Initialization
        2. 9.5.2.2 Serial Register Write
        3. 9.5.2.3 Serial Register Readout
    6. 9.6 Register Maps
      1. 9.6.1 Description of Serial Interface Registers
        1. 9.6.1.1  Register 6 (offset = 06h) [reset = 00h]
        2. 9.6.1.2  Register 7 (offset = 07h) [reset = 00h]
        3. 9.6.1.3  Register 8 (offset = 08h) [reset = 00h]
        4. 9.6.1.4  Register B (offset = 0Bh) [reset = 00h]
        5. 9.6.1.5  Register C (offset = 0Ch) [reset = 00h]
        6. 9.6.1.6  Register D (offset = 0Dh) [reset = 00h]
        7. 9.6.1.7  Register E (offset = 0Eh) [reset = 00h]
        8. 9.6.1.8  Register F (offset = 0Fh) [reset = 00h]
        9. 9.6.1.9  Register 10 (offset = 10h) [reset = 00h]
        10. 9.6.1.10 Register 11 (offset = 11h) [reset = 00h]
        11. 9.6.1.11 Register 12 (offset = 12h) [reset = 00h]
        12. 9.6.1.12 Register 13 (offset = 13h) [reset = 00h]
        13. 9.6.1.13 Register 1F (offset = 1Fh) [reset = FFh]
        14. 9.6.1.14 Register 26 (offset = 26h) [reset = 00h]
        15. 9.6.1.15 Register 27 (offset = 27h) [reset = 00h]
        16. 9.6.1.16 Register 2B (offset = 2Bh) [reset = 00h]
        17. 9.6.1.17 Register 2C (offset = 2Ch) [reset = 00h]
        18. 9.6.1.18 Register 2D (offset = 2Dh) [reset = 00h]
        19. 9.6.1.19 Register 30 (offset = 30h) [reset = 40h]
        20. 9.6.1.20 Register 36 (offset = 36h) [reset = 00h]
        21. 9.6.1.21 Register 37 (offset = 37h) [reset = 00h]
        22. 9.6.1.22 Register 38 (offset = 38h) [reset = 00h]
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Analog Input
          1. 10.2.2.1.1 Drive Circuit Requirements
          2. 10.2.2.1.2 Driving Circuit
        2. 10.2.2.2 Clock Input
          1. 10.2.2.2.1 SNR and Clock Jitter
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 器件支持
      1. 13.1.1 器件命名规则
        1. 13.1.1.1 技术参数定义
    2. 13.2 文档支持
      1. 13.2.1 相关文档　
    3. 13.3 相关链接
    4. 13.4 商标
    5. 13.5 静电放电警告
    6. 13.6 术语表
  14. 14机械封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Supply voltage AVDD3V –0.3 3.6 V
AVDD –0.3 2.1 V
DRVDD –0.3 2.1 V
IOVDD –0.3 2.1 V
Voltage between AGND and DGND –0.3 0.3 V
Voltage applied to input pins INAP, INBP, INAM, INBM –0.3 3 V
CLKINP, CLKINM –0.3 minimum (2.1, AVDD + 0.3) V
SYNC~P, SYNC~M –0.3 minimum (2.1, AVDD + 0.3) V
SYSREFP, SYSREFM –0.3 minimum (2.1, AVDD + 0.3) V
SCLK, SEN, SDATA, RESET, PDN_GBL, CTRL1, CTRL2, STBY, MODE –0.3 3.9 V
Temperature Operating free-air, TA –40 +85 °C
Operating junction, TJ +125 °C
Storage, Tstg –65 +150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

7.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)(3)
MIN NOM MAX UNIT
SUPPLIES
AVDD Analog supply voltage 1.7 1.8 1.9 V
AVDD3V Analog buffer supply voltage 3.15 3.3 3.45 V
DRVDD Digital supply voltage 1.7 1.8 1.9 V
IOVDD Output buffer supply voltage 1.7 1.8 1.9 V
ANALOG INPUTS
VID Differential input voltage range Default after reset 2 VPP
Register programmable(1) 2.5 VPP
VICR Input common-mode voltage VCM ± 0.025 V
Maximum analog input frequency with 2.5-VPP input amplitude 250 MHz
Maximum analog input frequency with 2-VPP input amplitude 400 MHz
CLOCK INPUT
Input clock sample rate 10x mode 60 250 MSPS
20x mode 40 156.25 MSPS
Input clock amplitude differential
(VCLKP – VCLKM)		 Sine wave, ac-coupled 0.3(2) 1.5 VPP
LVPECL, ac-coupled 1.6 VPP
LVDS, ac-coupled 0.7 VPP
LVCMOS, single-ended, ac-coupled 1.5 V
Input clock duty cycle 35% 50% 65%
DIGITAL OUTPUTS
CLOAD Maximum external load capacitance from each output pin to DRGND 3.3 pF
RLOAD Single-ended load resistance +50 Ω
TA Operating free-air temperature –40 +85 °C
(1) For details, refer to the Digital Gain section.
(2) Refer to the Performance vs Clock Amplitude curves, Figure 28 and Figure 29.
(3) After power-up, to reset the device for the first time, use the RESET pin only. Refer to the Register Initialization section.

7.4 Thermal Information

THERMAL METRIC(1) ADS42JBx9 UNIT
RGC (QFN)
64 PINS
RθJA Junction-to-ambient thermal resistance 22.9 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 7.1
RθJB Junction-to-board thermal resistance 2.5
ψJT Junction-to-top characterization parameter 0.1
ψJB Junction-to-board characterization parameter 2.5
RθJC(bot) Junction-to-case (bottom) thermal resistance 0.2
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

7.5 Electrical Characteristics: ADS42JB69 (16-Bit)

Typical values are at TA = +25°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, 50% clock duty cycle, –1-dBFS differential analog input, and sampling rate = 250 MSPS, unless otherwise noted. Minimum and maximum values are across the full temperature range of TMIN = –40°C to TMAX = +85°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, and IOVDD = 1.8 V.
PARAMETER TEST CONDITIONS 2-VPP FULL-SCALE 2.5-VPP FULL-SCALE UNIT
MIN TYP MAX MIN TYP MAX
SNR Signal-to-noise ratio fIN = 10 MHz 74 75.9 dBFS
fIN = 70 MHz 73.8 75.6 dBFS
fIN = 170 MHz 70.8 73.3 74.7 dBFS
fIN = 230 MHz 72.6 74 dBFS
SINAD Signal-to-noise and distortion ratio fIN = 10 MHz 73.9 75.7 dBFS
fIN = 70 MHz 73.7 75.3 dBFS
fIN = 170 MHz 69.6 73.2 74.5 dBFS
fIN = 230 MHz 72.2 73.1 dBFS
SFDR Spurious-free dynamic range
(including second and third harmonic distortion)		 fIN = 10 MHz 95 90 dBc
fIN = 70 MHz 91 88 dBc
fIN = 170 MHz 81 93 89 dBc
fIN = 230 MHz 84 82 dBc
THD Total harmonic distortion fIN = 10 MHz 92 88 dBc
fIN = 70 MHz 89 86 dBc
fIN = 170 MHz 78 91 86 dBc
fIN = 230 MHz 82 80 dBc
HD2 2nd-order harmonic distortion fIN = 10 MHz 95 95 dBc
fIN = 70 MHz 91 88 dBc
fIN = 170 MHz 81 93 94 dBc
fIN = 230 MHz 84 82 dBc
HD3 3rd-order harmonic distortion fIN = 10 MHz 95 90 dBc
fIN = 70 MHz 96 93 dBc
fIN = 170 MHz 81 94 89 dBc
fIN = 230 MHz 86 84 dBc
Worst spur
(other than second and third harmonics)		 fIN = 10 MHz 102 102 dBc
fIN = 70 MHz 103 103 dBc
fIN = 170 MHz 87 100 95 dBc
fIN = 230 MHz 99 93 dBc
IMD Two-tone intermodulation distortion f1 = 46 MHz, f2 = 50 MHz,
each tone at –7 dBFS		 97 95 dBFS
f1 = 185 MHz, f2 = 190 MHz,
each tone at –7 dBFS		 90 89 dBFS
Crosstalk 20-MHz, full-scale signal on channel under observation;
170-MHz, full-scale signal on other channel		 100 100 dB
Input overload recovery Recovery to within 1% (of full-scale) for 6-dB overload with sine-wave input 1 1 Clock cycle
PSRR AC power-supply rejection ratio For 50-mVPP signal on AVDD supply, up to 10 MHz > 40 > 40 dB
ENOB Effective number of bits fIN = 170 MHz 11.9 12.1 LSBs
DNL Differential nonlinearity fIN = 170 MHz ±0.6 ±0.6 LSBs
INL Integrated nonlinearity fIN = 170 MHz ±3 ±8 ±3.5 LSBs

7.6 Electrical Characteristics: ADS42JB49 (14-Bit)

Typical values are at TA = +25°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, 50% clock duty cycle, –1-dBFS differential analog input, and sampling rate = 250 MSPS, unless otherwise noted. Minimum and maximum values are across the full temperature range of TMIN = –40°C to TMAX = +85°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, and IOVDD = 1.8 V.
PARAMETER TEST CONDITIONS 2-VPP FULL-SCALE 2.5-VPP FULL-SCALE UNIT
MIN TYP MAX MIN TYP MAX
SNR Signal-to-noise ratio fIN = 10 MHz 73.4 75 dBFS
fIN = 70 MHz 73.2 74.7 dBFS
fIN = 170 MHz 69.5 72.7 74 dBFS
fIN = 230 MHz 72.2 73.4 dBFS
SINAD Signal-to-noise and distortion ratio fIN = 10 MHz 73.3 74.8 dBFS
fIN = 70 MHz 73.1 74.5 dBFS
fIN = 170 MHz 68.5 72.7 73.8 dBFS
fIN = 230 MHz 71.8 72.6 dBFS
SFDR Spurious-free dynamic range
(including second and third harmonic distortion)		 fIN = 10 MHz 95 90 dBc
fIN = 70 MHz 91 88 dBc
fIN = 170 MHz 79 93 89 dBc
fIN = 230 MHz 84 82 dBc
THD Total harmonic distortion fIN = 10 MHz 92 88 dBc
fIN = 70 MHz 89 86 dBc
fIN = 170 MHz 76 90 86 dBc
fIN = 230 MHz 82 80 dBc
HD2 2nd-order harmonic distortion fIN = 10 MHz 95 95 dBc
fIN = 70 MHz 91 88 dBc
fIN = 170 MHz 79 93 94 dBc
fIN = 230 MHz 84 82 dBc
HD3 3rd-order harmonic distortion fIN = 10 MHz 95 90 dBc
fIN = 70 MHz 96 93 dBc
fIN = 170 MHz 79 94 89 dBc
fIN = 230 MHz 86 84 dBc
Worst spur
(other than second and third harmonics)		 fIN = 10 MHz 102 102 dBc
fIN = 70 MHz 103 103 dBc
fIN = 170 MHz 87 101 95 dBc
fIN = 230 MHz 99 93 dBc
IMD Two-tone intermodulation distortion f1 = 46 MHz, f2 = 50 MHz,
each tone at –7 dBFS		 97 95 dBFS
f1 = 185 MHz, f2 = 190 MHz,
each tone at –7 dBFS		 90 89 dBFS
Crosstalk 20-MHz, full-scale signal on channel under observation;
170-MHz, full-scale signal on other channel		 100 100 dB
Input overload recovery Recovery to within 1% (of full-scale) for 6-dB overload with sine-wave input 1 1 Clock cycle
PSRR AC power-supply rejection ratio For a 50-mVPP signal on AVDD supply, up to 10 MHz > 40 > 40 dB
ENOB Effective number of bits fIN = 170 MHz 11.8 12 LSBs
DNL Differential nonlinearity fIN = 170 MHz ±0.15 ±0.15 LSBs
INL Integrated nonlinearity fIN = 170 MHz ±0.75 ±3 ±0.9 LSBs

7.7 Electrical Characteristics: General

Typical values are at +25°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, 50% clock duty cycle, –1-dBFS differential analog input, and sampling rate = 250 MSPS, unless otherwise noted. Minimum and maximum values are across the full temperature range: TMIN = –40°C to TMAX = +85°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, and IOVDD = 1.8 V.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ANALOG INPUTS
VID Differential input voltage range Default (after reset) 2 VPP
Register programmed(1) 2.5 VPP
Differential input resistance (at 170 MHz) 1.2 kΩ
Differential input capacitance (at 170 MHz) 4 pF
Analog input bandwidth With 50-Ω source impedance, and 50-Ω termination 900 MHz
VCM Common-mode output voltage 1.9 V
VCM output current capability 10 mA
DC ACCURACY
Offset error –20 20 mV
EGREF Gain error as a result of internal reference inaccuracy alone ±2 %FS
EGCHAN Gain error of channel alone –5 %FS
Temperature coefficient of EGCHAN 0.01 Δ%/°C
POWER SUPPLY
IAVDD Analog supply current 128 160 mA
IAVDD3V Analog buffer supply current 290 330 mA
IDRVDD Digital supply current 228 252 mA
IOVDD Output buffer supply current 50-Ω external termination from pin to IOVDD, fIN = 2.5 MHz 60 100 mA
Analog power 231 mW
Analog buffer power 957 mW
Digital power 410 mW
Power consumption by output buffer 50-Ω external termination from pin to IOVDD, fIN = 2.5 MHz 109 mW
Total power 1.7 1.96 W
Global power-down 160 mW
(1) Refer to the Serial Interface section.

7.8 Digital Characteristics

The dc specifications refer to the condition where the digital outputs are not switching, but are permanently at a valid logic level '0' or '1'. AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, and IOVDD = 1.8 V, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL INPUTS (RESET, SCLK, SEN, SDATA, PDN_GBL, STBY, CTRL1, CTRL2, MODE)(1)
High-level input voltage All digital inputs support 1.8-V and 3.3-V logic levels 1.2 V
Low-level input voltage All digital inputs support 1.8-V and 3.3-V logic levels 0.4 V
High-level input current SEN 0 µA
RESET, SCLK, SDATA, PDN_GBL, STBY, CTRL1, CTRL2, MODE 10 µA
Low-level input current SEN 10 µA
RESET, SCLK, SDATA, PDN_GBL, STBY, CTRL1, CTRL2, MODE 0 µA
DIGITAL INPUTS (SYNC~P, SYNC~M, SYSREFP, SYSREFM)
High-level input voltage 1.3 V
Low-level input voltage 0.5 V
VCM_DIG Input common-mode voltage 0.9 V
DIGITAL OUTPUTS (SDOUT, OVRA, OVRB)
High-level output voltage DRVDD – 0.1 DRVDD V
Low-level output voltage 0.1 V
DIGITAL OUTPUTS (JESD204B Interface: DA[0,1], DB[0,1])(2)
High-level output voltage IOVDD V
Low-level output voltage IOVDD – 0.4 V
|VOD| Output differential voltage 0.4 V
VOCM Output common-mode voltage IOVDD – 0.2 V
Transmitter short-circuit current Transmitter terminals shorted to any voltage between –0.25 V and 1.45 V –100 100 mA
Single-ended output impedance 50 Ω
Output capacitance Output capacitance inside the device,
from either output to ground		 2 pF
(1) RESET, SCLK, SDATA, PDN_GBL, STBY, CTRL1, CTRL2 and MODE pins have 150-kΩ (typical) internal pull-down resistor to ground, while SEN pin has 150-kΩ (typical) pull-up resistor to AVDD.
(2) 50-Ω, single-ended external termination to IOVDD.

7.9 Timing Characteristics

Typical values are at +25°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, 50% clock duty cycle, –1-dBFS differential analog input, and sampling rate = 250 MSPS, unless otherwise noted. Minimum and maximum values are across the full temperature range: TMIN = –40°C to TMAX = +85°C, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, and IOVDD = 1.8 V. See Figure 1.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SAMPLE TIMING CHARACTERISTICS
Aperture delay 0.4 0.7 1.1 ns
Aperture delay matching Between two channels on the same device ±70 ps
Between two devices at the same temperature and supply voltage ±150 ps
Aperture jitter 85 fS rms
Wake-up time Time to valid data after coming out of STANDBY mode 50 200 µs
Time to valid data after coming out of global power-down 250 1000 µs
tSU_SYNC~ Setup time for SYNC~ Referenced to input clock rising edge 400 ps
tH_SYNC~ Hold time for SYNC~ Referenced to input clock rising edge 100 ps
tSU_SYSREF Setup time for SYSREF Referenced to input clock rising edge 400 ps
tH_SYSREF Hold time for SYSREF Referenced to input clock rising edge 100 ps
CML OUTPUT TIMING CHARACTERISTICS
Unit interval 320 1667 ps
Serial output data rate 3.125 Gbps
Total jitter 2.5 Gbps (10x mode, fS = 250 MSPS) 0.28 P-PUI
3.125 Gbps (20x mode, fS = 156.25 MSPS) 0.3 P-PUI
tR, tF Data rise time,
data fall time		 Rise and fall times measured from 20% to 80%,
differential output waveform,
600 Mbps ≤ bit rate ≤ 3.125 Gbps		 105 ps

Table 1. Latency in Different Modes(1)(2)

MODE PARAMETER LATENCY (N Cycles) TYPICAL DATA DELAY (tD, ns)
10x ADC latency 23 0.65 × tS + 3
Normal OVR latency 14 6.7
Fast OVR latency 9 6.7
from SYNC~ falling edge to CGS phase(3) 16 0.65 × tS + 3
from SYNC~ rising edge to ILA sequence(4) 25 0.65 × tS + 3
20x ADC latency 22 0.85 × tS + 3
Normal OVR latency 14 6.7
Fast OVR latency 9 6.7
from SYNC~ falling edge to CGS phase(3) 15 0.85 × tS + 3
from SYNC~ rising edge to ILA sequence(4) 16 0.85 × tS + 3
(1) Overall latency = latency + tD.
(2) tS is the time period of the ADC conversion clock.
(3) Latency is specified for subclass 2. In subclass 0, the SYNC~ falling edge to CGS phase latency is 16 clock cycles in 10x mode and 15 clock cycles in 20x mode.
(4) Latency is specified for subclass 2. In subclass 0, the SYNC~ rising edge to ILA sequence latency is 11 clock cycles in 10x mode and 11 clock cycles in 20x mode.
timing3_las900.gif
1.

NOINDENT:

Overall latency = ADC latency + tD.
2.

NOINDENT:

x = A for channel A and B for channel B.
Figure 1. ADC Latency

7.10 Typical Characteristics: ADS42JB69

Typical values are at TA = +25°C, ADC sampling rate = 250 MSPS, 50% clock duty cycle, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, –1-dBFS differential input, 2-VPP full-scale, and 32k-point FFT, unless otherwise noted.
G001_SLAS900.png
Figure 2. FFT for 10-MHz Input Signal
G003_SLAS900.png
Figure 4. FFT for 300-MHz Input Signal
G005_SLAS900.png
Figure 6. FFT for 170-MHz Input Signal
(2.5-VPP Full-Scale)
G007_SLAS900.png
Figure 8. FFT for Two-Tone Input Signal
(–7 dBFS at 46 MHz and 50 MHz)
G009_SLAS900.png
Figure 10. FFT for Two-Tone Input Signal
(–7 dBFS at 185 MHz and 190 MHz)
G011_SLAS900.png
Figure 12. Intermodulation Distortion vs
Input Amplitude (46 MHz and 50 MHz)
G013_SLAS900.png
Figure 14. Spurious-Free Dynamic Range vs
Input Frequency
G015_SLAS900.png
Figure 16. Spurious-Free Dynamic Range vs
Digital Gain
G017_SLAS900.png
Figure 18. Performance vs Input Amplitude
(70 MHz)
G019_SLAS900.png
Figure 20. Performance vs
Input Common-Mode Voltage (70 MHz)
G021_SLAS900.png
Figure 22. Spurious-Free Dynamic Range vs
AVDD Supply and Temperature (170 MHz)
G023_SLAS900.png
Figure 24. Spurious-free Dynamic Range vs AVDD_BUF Supply and Temperature (170 MHz)
G025_SLAS900.png
Figure 26. Spurious-Free Dynamic Range vs
DRVDD Supply and Temperature (170 MHz)
G027_SLAS900.png
Figure 28. Performance vs Clock Amplitude
(70 MHz)
G029_SLAS900.png
Figure 30. Performance vs Clock Duty Cycle
(70 MHz)
G002_SLAS900.png
Figure 3. FFT for 170-MHz Input Signal
G004_SLAS900.png
Figure 5. FFT for 10-MHz Input Signal
(2.5-VPP Full-Scale)
G006_SLAS900.png
Figure 7. FFT for 300-MHz Input Signal
(2.5-VPP Full-Scale)
G008_SLAS900.png
Figure 9. FFT for Two-Tone Input Signal
(–36 dBFS at 46 MHz and 50 MHz)
G010_SLAS900.png
Figure 11. FFT for Two-Tone Input Signal
(–36 dBFS at 185 MHz and 190 MHz)
G012_SLAS900.png
Figure 13. Intermodulation Distortion vs
Input Amplitude (185 MHz and 190 MHz)
G014_SLAS900.png
Figure 15. Signal-to-Noise Ratio vs
Input Frequency
G016_SLAS900.png
Figure 17. Signal-to-Noise Ratio vs
Digital Gain
G018_SLAS900.png
Figure 19. Performance vs Input Amplitude
(170 MHz)
G020_SLAS900.png
Figure 21. Performance vs
Input Common-Mode Voltage (170 MHz)
G022_SLAS900.png
Figure 23. Signal-to-Noise Ratio vs
AVDD Supply and Temperature (170 MHz)
G024_SLAS900.png
Figure 25. Signal-to-Noise Ratio vs
AVDD_BUF Supply and Temperature (170 MHz)
G026_SLAS900.png
Figure 27. Signal-to-Noise Ratio vs
DRVDD Supply and Temperature (170 MHz)
G028_SLAS900.png
Figure 29. Performance vs Clock Amplitude
(170 MHz)
G030_SLAS900.png
Figure 31. Performance vs Clock Duty Cycle
(170 MHz)

7.11 Typical Characteristics: ADS42JB49

Typical values are at TA = +25°C, full temperature range is TMIN = –40°C to TMAX = +85°C, ADC sampling rate = 250 MSPS, 50% clock duty cycle, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, –1-dBFS differential input, 2-VPP full-scale, and 32k-point FFT, unless otherwise noted.
G031_SLAS900.png
Figure 32. FFT for 10-MHz Input Signal
G033_SLAS900.png
Figure 34. FFT for 300-MHz Input Signal
G035_SLAS900.png
Figure 36. FFT for 170-MHz Input Signal
(2.5-VPP Full-Scale)
G037_SLAS900.png
Figure 38. FFT for Two-Tone Input Signal
(–7 dBFS at 46 MHz and 50 MHz)
G039_SLAS900.png
Figure 40. FFT for Two-Tone Input Signal
(–7 dBFS at 185 MHz and 190 MHz)
G041_SLAS900.png
Figure 42. Intermodulation Distortion vs
Input Amplitude (46 MHz and 50 MHz)
G043_SLAS900.png
Figure 44. Spurious-Free Dynamic Range vs
Input Frequency
G045_SLAS900.png
Figure 46. Spurious-Free Dynamic Range vs
Digital Gain
G047_SLAS900.png
Figure 48. Performance vs Input Amplitude
(70 MHz)
G049_SLAS900.png
Figure 50. Performance vs
Input Common-Mode Voltage (70 MHz)
G051_SLAS900.png
Figure 52. Spurious-Free Dynamic Range vs
AVDD Supply and Temperature (170 MHz)
G053_SLAS900.png
Figure 54. Spurious-Free Dynamic Range vs AVDD_BUF Supply and Temperature (170 MHz)
G055_SLAS900.png
Figure 56. Spurious-Free Dynamic Range vs
DRVDD Supply and Temperature (170 MHz)
G057_SLAS900.png
Figure 58. Performance vs Clock Amplitude
(70 MHz)
G059_SLAS900.png
Figure 60. Performance vs Clock Duty Cycle
(70 MHz)
G032_SLAS900.png
Figure 33. FFT for 170-MHz Input Signal
G034_SLAS900.png
Figure 35. FFT for 10-MHz Input Signal
(2.5-VPP Full-Scale)
G036_SLAS900.png
Figure 37. FFT for 300-MHz Input Signal
(2.5-VPP Full-Scale)
G038_SLAS900.png
Figure 39. FFT for Two-Tone Input Signal
(–36 dBFS at 46 MHz and 50 MHz)
G040_SLAS900.png
Figure 41. FFT for Two-Tone Input Signal
(–36 dBFS at 185 MHz and 190 MHz)
G042_SLAS900.png
Figure 43. Intermodulation Distortion vs
Input Amplitude (185 MHz and 190 MHz)
G044_SLAS900.png
Figure 45. Signal-to-Noise Ratio vs
Input Frequency
G046_SLAS900.png
Figure 47. Signal-to-Noise Ratio vs
Digital Gain
G048_SLAS900.png
Figure 49. Performance vs Input Amplitude
(170 MHz)
G050_SLAS900.png
Figure 51. Performance vs
Input Common-Mode Voltage (170 MHz)
G052_SLAS900.png
Figure 53. Signal-to-Noise Ratio vs
AVDD Supply and Temperature (170 MHz)
G054_SLAS900.png
Figure 55. Signal-to-Noise Ratio vs AVDD_BUF Supply and Temperature (170 MHz)
G056_SLAS900.png
Figure 57. Signal-to-Noise Ratio vs
DRVDD Supply and Temperature (170 MHz)
G058_SLAS900.png
Figure 59. Performance vs Clock Amplitude
(170 MHz)
G060_SLAS900.png
Figure 61. Performance vs Clock Duty Cycle
(170 MHz)

7.12 Typical Characteristics: Common

Typical values are at TA = +25°C, full temperature range is TMIN = –40°C to TMAX = +85°C, ADC sampling rate = 250 MSPS, 50% clock duty cycle, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, –1-dBFS differential input, 2-VPP full-scale, and 64k-point FFT, unless otherwise noted.
G061_SLAS900.png
Figure 62. Common-Mode Rejection Ratio FFT
G063_SLAS900.png
Figure 64. Power-Supply Rejection Ratio FFT for AVDD Supply
G065_SLAS900.png
Figure 66. Total Power vs Sampling Frequency
G062_SLAS900.png
Figure 63. Common-Mode Rejection Ratio vs
Test Signal Frequency
G064_SLAS900.png
Figure 65. Power-Supply Rejection Ratio vs
Test Signal Frequency
G066_SLAS900.png
Figure 67. IOVDD Power vs Sampling Frequency

7.13 Typical Characteristics: Contour

Typical values are at TA = +25°C, full temperature range is TMIN = –40°C to TMAX = +85°C, ADC sampling rate = 250 MSPS, 50% clock duty cycle, AVDD = 1.8 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, IOVDD = 1.8 V, –1-dBFS differential input, 2-VPP full-scale, and 64k-point FFT, unless otherwise noted.

7.13.1 Spurious-Free Dynamic Range (SFDR): General

G067_SLAS900.gif
Figure 68. 0-dB Gain (SFDR)
G068_SLAS900.gif
Figure 69. 6-dB Gain (SFDR)

7.13.2 Signal-to-Noise Ratio (SNR): ADS42JB69

G069_SLAS900.gif
Figure 70. 0-dB Gain (SNR, ADS42JB69)
G070_SLAS900.gif
Figure 71. 6-dB Gain (SNR, ADS42JB69)

7.13.3 Signal-to-Noise Ratio (SNR): ADS42JB49

G071_SLAS900.gif
Figure 72. 0-dB Gain (SNR, ADS42JB49)
G072_SLAS900.gif
Figure 73. 6-dB Gain (SNR, ADS42JB49)