Description:

The GD30AD33G1 is a 16-bit DAS that supports dualchannel simultaneous sampling of 16 channels. TheGD30AD33G1 operates from a single 5 V power supplyand can handle ±10 V, ±5 V, and ±2.5 V true bipolar inputsignals while each pair of channels can sample at up to1MSPS throughput and 90.5 dB SNR.The GD30AD33G1 input clamp protection circuit canwithstand voltages up to ±25 V. Regardless of thesampling frequency, the analog input impedance of theGD30AD33G1 is 1 MΩ. It operates in a single-supplymode with on-chip filtering and high input impedance,eliminating the need for a driver op amp and externalbipolar power supply.The device integrates analog input clamp protection, adual 16-bit charge redistribution SAR analog-to-digitalconverter (ADC), a flexible digital filter, 2.5 V referenceand reference buffer, and high speed serial and parallelinterfaces.

Features:

• 16-channel, dual-way, synchronous samplinginput

• Independently selectable channel inputranges

– True bipolar: ±10 V, ±5 V, ±2.5 V

• 5 V single analog supply, V DRIVE supplyvoltage: 2.3 V to 3.6 V

• Fully integrated data acquisition solution

– Analog input clamp protection

– Input buffer with 1 MΩ analog inputimpedance

– First order anti-aliasing analog filter

– On-chip precision voltage reference andreference voltage buffer

– Dual-channel 16-bit SuccessiveApproximation Register (SAR) ADC

– Throughput rate: 2×1 MSPS

– Oversampling capability provided by digitalfilter

– Flexible sequencer, supporting burst mode

• Flexible parallel/serial interface

– SPI/QSPI/MICROWIRE/DSP compatible

• Hardware/Software Configuration

• performance

– Signal-to-Noise Ratio (SNR): 90.5 dB (1MSPS)

– Total Harmonic Distortion (THD): -103 dB

– ±1 LSB INL (typ), ±0.99 LSB DNL (max)

– 7 kV ESD rating on analog input channels

• On-chip self-test function

• 80-pin LQFP package

Application:

• Power line monitoring

• Protection relay

• Multiphase Motor Control

• Instrumentation and control systems

 Data Acquisition System (DAS)