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ADS9803

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20 位元 8 通道、每通道 2 MSPS 同時取樣 ADC，內建可編程增益放大器

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ADS9803

現行
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產品詳細資料

Resolution (Bits) 20 Sample rate (max) (ksps) 2000 Number of input channels 8 Interface type Enhanced SPI, Serial CMOS Architecture SAR Input type Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 12 Input voltage range (min) (V) -12 Features Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 220 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 92.3 Digital supply (min) (V) 1.75 Digital supply (max) (V) 1.85
Resolution (Bits) 20 Sample rate (max) (ksps) 2000 Number of input channels 8 Interface type Enhanced SPI, Serial CMOS Architecture SAR Input type Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 12 Input voltage range (min) (V) -12 Features Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 220 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 92.3 Digital supply (min) (V) 1.75 Digital supply (max) (V) 1.85
VQFN (RSH) 56 49 mm² (7 mm × 7 mm)
  • 8-channel, 20-bit ADC with analog front-end:
    • Simultaneous sampling
    • Constant 1MΩ input impedance front-end
    • 2MSPS/ch speed for 8-channels
    • Speed-boost mode: 8MSPS/ch for 2-channels
  • Programmable analog input ranges:
    • ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
    • Single-ended and differential inputs
    • Common-mode voltage range: ±12V
    • Input overvoltage protection: Up to ±18V
  • User-selectable analog input bandwidth:
    • 22.7kHz and 700kHz
  • Integrated low-drift precision references:
    • ADC reference: 4.096V
    • 2.5V reference output for external circuits
  • Excellent AC and DC performance at full-throughput:
    • DNL: ±0.5ppm, INL: ±2.5ppm
    • SNR: 90.3dBFS, THD: –113dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C
  • 8-channel, 20-bit ADC with analog front-end:
    • Simultaneous sampling
    • Constant 1MΩ input impedance front-end
    • 2MSPS/ch speed for 8-channels
    • Speed-boost mode: 8MSPS/ch for 2-channels
  • Programmable analog input ranges:
    • ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
    • Single-ended and differential inputs
    • Common-mode voltage range: ±12V
    • Input overvoltage protection: Up to ±18V
  • User-selectable analog input bandwidth:
    • 22.7kHz and 700kHz
  • Integrated low-drift precision references:
    • ADC reference: 4.096V
    • 2.5V reference output for external circuits
  • Excellent AC and DC performance at full-throughput:
    • DNL: ±0.5ppm, INL: ±2.5ppm
    • SNR: 90.3dBFS, THD: –113dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C

The ADS9803 is an eight-channel data acquisition (DAQ) system based on a simultaneous sampling, 20-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS9803 features a complete analog front-end (AFE) for each channel with an input clamp. The device also features a 1MΩ input impedance and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. Configure the ADS9803 to accept ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V bipolar inputs with up to ±12V input common-mode voltage.

A digital interface supporting 1.2V to 1.8V operation enables the ADS9803 to be used without external voltage level translators.

The ADS9803 is an eight-channel data acquisition (DAQ) system based on a simultaneous sampling, 20-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS9803 features a complete analog front-end (AFE) for each channel with an input clamp. The device also features a 1MΩ input impedance and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. Configure the ADS9803 to accept ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V bipolar inputs with up to ±12V input common-mode voltage.

A digital interface supporting 1.2V to 1.8V operation enables the ADS9803 to be used without external voltage level translators.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 ADS980x 20-Bit, 2MSPS/Ch, 8-Channel, Simultaneous-Sampling ADCs With Integrated Analog Front-End datasheet PDF | HTML 2025/8/14

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支援軟體

ADS98XX-FPGA-EXAMPLE-CODE — ADS98xx FPGA interface example code

Expedite your ADS98xx digital design with this Verilog module from Texas Instruments
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模擬型號

ADS98xx IBIS Model

SBAM514.ZIP (41 KB) - IBIS 模型
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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