ZHCS226B June   2011  – March 2015 DAC7551-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Digital-to-Analog Converter
      2. 7.3.2 Resistor String
      3. 7.3.3 Output Buffer Amplifiers
        1. 7.3.3.1 DAC External Reference Input
        2. 7.3.3.2 Amplifier Sense Input
        3. 7.3.3.3 Power-On Reset
        4. 7.3.3.4 Power Down
        5. 7.3.3.5 Asynchronous Clear
        6. 7.3.3.6 IOVDD and Level Shifters
      4. 7.3.4 Integral and Differential Linearity
      5. 7.3.5 Glitch Energy
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
        1. 7.5.1.1 16-Bit Word and Input Shift Register
        2. 7.5.1.2 Daisy-Chain Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Waveform Generation
      2. 8.1.2 Generating ±5-V, ±10-V, and ±12-V Outputs For Precision Industrial Control
        1. 8.1.2.1 Loop Accuracy
        2. 8.1.2.2 Loop Speed
    2. 8.2 Typical Application
      1. 8.2.1 Generating Industrial Voltage Ranges
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    2. 11.2 商标
    3. 11.3 静电放电警告
    4. 11.4 术语表
  12. 12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

6 Specifications

6.1 Absolute Maximum Ratings

Over operating free-air temperature range (unless otherwise noted).(1)
MIN MAX UNIT
VDD , IOVDD to GND –0.3 6 V
Digital input voltage to GND –0.3 VDD + 0.3 V
VOUT to GND –0.3 VDD + 0.3 V
Operating temperature range –40 105 °C
Junction temperature, TJ max 150 °C
Power dissipation (DRN) (TJ max – TA) / RθJA
Storage temperature, Tstg –65 150 °C
(1) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per AEC Q100-002(1) ±2000 V
Charged-device model (CDM), per AEC Q100-011 All pins ±500
Corner pins (1, 6, 7, and 12) ±750
(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VI Input voltage VDD 2.7 5.5 V
VREFH 0.25 VDD
VREFL 0 GND VDD
VFB 0 VDD
IOVDD 1.8 VDD
CLR 0 IOVDD
SYNC 0 IOVDD
SCLK 0 IOVDD
SDIN 0 IOVDD
VO Output voltage SDO 0 IOVDD V
VOUT 0 VDD
TJ Operating junction temperature 150 °C

6.4 Thermal Information

THERMAL METRIC(1) DRN (USON) UNIT
12 PINS
RθJA Junction-to-ambient thermal resistance 49.8 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 45.8
RθJB Junction-to-board thermal resistance 18.2
ψJT Junction-to-top characterization parameter 0.8
ψJB Junction-to-board characterization parameter 18.3
RθJC(bot) Junction-to-case (bottom) thermal resistance 2.9
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

all specifications at –40°C to +105°C, VDD = 2.7 to 5.5 V, VREFH = VDD, VREFL = GND, RL = 2 kΩ to GND, and CL = 200 pF to GND (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
STATIC PERFORMANCE(1)
Resolution 12 Bits
Relative accuracy ±0.35 ±1 LSB
Differential nonlinearity Specified monotonic by design ±0.08 ±0.5 LSB
Offset error ±12 mV
Zero-scale error All zeroes loaded to DAC register ±12 mV
Gain error ±0.15 %FSR
Full-scale error ±0.5 %FSR
Zero-scale error drift 7 μV/°C
Gain temperature coefficient 3 ppm of FSR/°C
PSRR Power-supply rejection ratio VDD = 5 V 0.75 mV/V
OUTPUT CHARACTERISTICS(2)
Output voltage range 2 × VREFL VREFH V
Output voltage settling time RL = 2 kΩ, 0 pF < CL < 200 pF 5 μs
Slew rate 1.8 V/μs
Capacitive load stability RL = ∞ 470 pF
RL = 2 kΩ 1000
Digital-to-analog glitch impulse 1 LSB change around major carry 0.1 nV-s
Digital feedthrough 0.1 nV-s
Output noise density 10kHz offset frequency 120 nV/√Hz
THD Total harmonic distortion fOUT = 1 kHz, fS = 1 MSPS, BW = 20 kHz –85 dB
DC output impedance 1 Ω
Short-circuit current VDD = 5 V 50 mA
VDD = 3 V 20
Power-up time Coming out of power-down mode, VDD = 5 V 15 μs
Coming out of power-down mode, VDD = 3 V 15
REFERENCE INPUT
VREFH input range 0 VDD V
VREFL input range VREFL < VREFH 0 GND VDD V
Reference input impedance 100 kΩ
Reference current VREF = VDD = 5 V 50 100 μA
VREF = VDD = 3 V 30 60
LOGIC INPUTS(2)
Input current ±1 μA
VIN_L Input low voltage IOVDD ≥ 2.7 V 0.3 IOVDD V
VIN_H Input high voltage IOVDD ≥ 2.7 V 0.7 IOVDD V
Pin capacitance 3 pF
POWER REQUIREMENTS
VDD Supply voltage 2.7 5.5 V
IOVDD I/O supply voltage(3) 1.8 VDD V
IDD Supply current(4) Normal operation (DAC active and excluding load current) VDD = 3.6 to 5.5 V, VIH = IOVDD, VIL = GND 150 200 μA
VDD = 2.7 to 3.6 V, VIH = IOVDD, VIL = GND 100 150
All power-down modes VDD = 3.6 to 5.5 V, VIH = IOVDD, VIL = GND 0.2 2 μA
VDD = 2.7 to 3.6 V, VIH = IOVDD, VIL = GND 0.05 2
POWER EFFICIENCY
IOUT/IDD ILOAD = 2 mA, VDD = 5 V 93%
TEMPERATURE RANGE
Specified performance –40 105 °C
(1) Linearity tested using a reduced code range of 30 to 4065; output unloaded.
(2) Specified by design and characterization; not production tested. For 1.8 V < IOVDD < 2.7 V, TI recommends that VIH  ≥ 0.8 IOVDD, and VIL ≤ 0.2 IOVDD.
(3) IOVDD operates down to 1.8 V with slightly degraded timing, as long as VIH ≥ 0.8 IOVDD and VIL  ≤ 0.2 IOVDD.
(4) IDD tested with digital input code = 0032.

6.6 Timing Requirements(1)

All specifications at –40°C to +105°C, VDD = 2.7 to 5.5 V, and RL = 2 kΩ to GND (unless otherwise noted). See Figure 1.
MIN MAX UNIT
t1(2) SCLK cycle time VDD = 2.7 V to 3.6 V 20 ns
VDD = 3.6 V to 5.5 V 20
t2 SCLK HIGH time VDD = 2.7 V to 3.6 V 6.5 ns
VDD = 3.6 V to 5.5 V 6.5
t3 SCLK LOW time VDD = 2.7 V to 3.6 V 6.5 ns
VDD = 3.6 V to 5.5 V 6.5
t4 SYNC falling edge to SCLK falling edge setup time VDD = 2.7 V to 3.6 V 4 ns
VDD = 3.6 V to 5.5 V 4
t5 Data setup time VDD = 2.7 V to 3.6 V 3 ns
VDD = 3.6 V to 5.5 V 3
t6 Data hold time VDD = 2.7 V to 3.6 V 3 ns
VDD = 3.6 V to 5.5 V 3
t7 SCLK falling edge to SYNC rising edge VDD = 2.7 V to 3.6 V 0 t1 – 10 ns(3) ns
VDD = 3.6 V to 5.5 V 0 t1 – 10 ns(3)
t8 Minimum SYNC HIGH time VDD = 2.7 V to 3.6 V 20 ns
VDD = 3.6 V to 5.5 V 20
t9 SCLK falling edge to SDO valid VDD = 2.7 V to 3.6 V 10 ns
VDD = 3.6 V to 5.5 V 10
t10 CLR pulse width low VDD = 2.7 V to 3.6 V 10 ns
VDD = 3.6 V to 5.5 V 10
(1) All input signals are specified with tR = tF = 1 ns (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH) / 2.
(2) Maximum SCLK frequency is 50 MHz at VDD = 2.7 to 5.5 V.
(3) SCLK falling edge to SYNC rising edge time shold not exceed (t1 – 10 ns) to latch the correct data.
DAC7551-Q1 ser_wrt_las441.gifFigure 1. Serial Write Operation Timing Diagram

6.7 Typical Characteristics

At TA = 25°C, unless otherwise noted.
DAC7551-Q1 tc_le-code_5v_las441.gif
VDD = 5 V VREFH = 4.096 V VREFL = GND
Figure 2. Linearity Error and Differential Linearity Error vs Digital Input Code
DAC7551-Q1 tc_zse-tmp_5v_las441.gif
VDD = 5 V VREFH = 4.096 V VREFL = GND
Figure 4. Zero-Scale Error vs Free-Air Temperature
DAC7551-Q1 tc_fse-tmp_5v_las441.gif
VDD = 5 V VREFH = 4.096 V VREFL = GND
Figure 6. Full-Scale Error vs Free-Air Temperature
DAC7551-Q1 tc_sink_las441.gif
DAC loaded with 0000h
Figure 8. Sink Current at Negative Rail (Typical)
DAC7551-Q1 tc_source_27v_las441.gif
Figure 10. Source Current at Positive Rail
DAC7551-Q1 tc_idd-tmp_las441.gif
Powered No load
Figure 12. Supply Current vs Free-Air Temperature
DAC7551-Q1 tc_idd-logic_las441.gif
TA = 25°C SCLK input All other inputs = GND
Figure 14. Supply Current vs Logic Input Voltage
DAC7551-Q1 tc_histo_27v_las441.gif
Digital input code = 2048
VDD = 2.7 V VREFH = 2.5 V VREFL = GND
Figure 16. Histogram of Current Consumption, 2.7 V
DAC7551-Q1 tc_error_27v_las441.gif
VDD = 2.7 V VREFH = 2.5 V VREFL = GND
TA = 25°C
Figure 18. Total Error, 2.7 V
DAC7551-Q1 tc_settling_5v_las441.gif
Output loaded with 200 pF to GND
Code 0041 to 4055
VDD = 5 V VREFH = 4.096 V VREFL = GND
Figure 20. Large-Signal Settling Time, 5 V
DAC7551-Q1 tc_glitch_mid_las441.gif
Figure 22. Midscale Glitch
DAC7551-Q1 tc_dig_fdthru_las441.gif
Figure 24. Digital Feedthrough Error
DAC7551-Q1 tc_le-code_27v_las441.gif
VDD = 2.7 V VREFH = 2.5 V VREFL = GND
Figure 3. Linearity Error and Differential Linearity Error vs Digital Input Code
DAC7551-Q1 tc_zse-tmp_27v_las441.gif
VDD = 2.7 V VREFH = 2.5 V VREFL = GND
Figure 5. Zero-Scale Error vs Free-Air Temperature
DAC7551-Q1 tc_fse-tmp_27v_las441.gif
VDD = 2.7 V VREFH = 2.5 V VREFL = GND
Figure 7. Full-Scale Error vs Free-Air Temperature
DAC7551-Q1 tc_source_5v_las441.gif
Figure 9. Source Current at Positive Rail
DAC7551-Q1 tc_idd-code_las441.gif
Powered No load
Figure 11. Supply Current vs Digital Input Code
DAC7551-Q1 tc_idd-vdd_las441.gif
DAC powered, no load VREFH = 2.5 V VREFL = GND
Figure 13. Supply Current vs Supply Voltage
DAC7551-Q1 tc_histo_5v_las441.gif
Digital input code = 2048
VDD = 5.5 V VREFH = 4.096 V VREFL = GND
Figure 15. Histogram of Current Consumption, 5.5 V
DAC7551-Q1 tc_error_5v_las441.gif
VDD = 5 V VREFH = 4.096 V VREFL = GND
TA = 25°C
Figure 17. Total Error, 5 V
DAC7551-Q1 tc_exit_pd_mode_las441.gif
Power-up code = 4000
VDD = 5 V VREFH = 4.096 V VREFL = GND
Figure 19. Exiting Power-Down Mode
DAC7551-Q1 tc_settling_27v_las441.gif
Output loaded with 200 pF to GND
Code 0041 to 4055
VDD = 2.7 V VREFH = 2.5 V VREFL = GND
Figure 21. Large-Signal Settling Time, 2.7 V
DAC7551-Q1 tc_glitch_worst_las441.gif
Figure 23. Worst-Case Glitch
DAC7551-Q1 tc_thd-fout_las441.gif
VDD = 5.5 V VREFH = 4.096 V VREFL = GND
fS = 1 MSPS –1-dB FSR digital input
Measurement bandwidth = 20 kHz
Figure 25. Total Harmonic Distortion vs Output Frequency