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ADS9811RSHR is an eight-channel data acquisition (DAQ) system based on a simultaneous sampling, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS9811RSHR 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 ADS9811RSHR to accept ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V bipolar inputs with up to ±12V input common-mode voltage.

Feature Of ADS9811RSHR

8-channel, 18-bit ADC with analog front-end:

Simultaneous sampling

Constant 1MΩ input impedance front-end

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: ±0.35LSB, INL: ±0.8LSB

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

Applications Of ADS9811RSHR

Semiconductor test

Programmable DC power supplies

Parametric measurement units (PMU)

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