The ADS8422 is a 16-bit, 4-MHz A/D converter with an internal 4.096-V reference. The device includes a 16-bit capacitor-based multi-bit SAR A/D converter with inherent sample and hold. This converter includes a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles if necessary.

The ADS8422 has a fully differential, pseudo-bipolar input. It is available in a 48-lead TQFP package and is characterized over the industrial -40°C to +85°C temperature range.

• Fully Differential Input with Pseudo-Bipolar Input Range -4 V to +4 V

• 16-Bit NMC at 4 MSPS

• 1 LSB INL Typ

• 92dB SNR, -102dB THD Typ with 100-kHz Input

• Internal 4.096-V Reference and Reference Buffer

• REFIN/2 Available for Setting Analog Input Common-Mode Voltage

• Zero Latency

• High-Speed Parallel Interface

• Single Supply Operation Capability

• Low Power: 155 mW at 4 MHz Typ, Flexible Power-Down Scheme

• Pin-Out Similar to ADS8412/8402

• 48-Pin 9×9 TQFP Package

• APPLICATIONS

• DWDM

• Instrumentation

• High-Speed, High-Resolution, Zero Latency Data Acquisition Systems

• Transducer Interface

• Medical Instruments

• Spectrum Analysis

• ATE