Analog Devices Inc. AD7616 ADCs

Analog Devices Inc. AD7616 ADCs are 16-bit Data Acquisition Systems (DASs) that supports dual simultaneous sampling of 16 channels. These ADCs feature a 16-bit charge redistribution SAR ADC, flexible digital filter, 2.5V reference and reference buffer, serial and parallel interfaces, and analog input clamp protection. The input clamp protection circuitry can withstand voltages of up to 21V. The AD7616 ADCs can accommodate ±10V, ±15V, and ±2.5V true bipolar input signals while sampling at throughput rates of up to 1MSP per channel pair. These ADCs achieve higher SNR performance of up to 90.5dB using the on-chip oversampling mode. The 5V single-supply operation, on-chip filtering, and high input impedance eliminate the need for driver op-amps and external bipolar supplies. Typical applications include power line monitoring, protective relays, multi-phase motor control, DASs, instrumentation, and control systems.

Features

16-channel dual simultaneously sampled inputs
Independently selectable channel input ranges:
- ±10V, ±5V, and ±2.5V true bipolar
Single 5V analog supply and 2.3V to 3.6V V_DRIVE supply
Fully integrated data acquisition solution:
- Analog input clamp protection
- Input buffer with 1MΩ analog input impedance
- First-order anti-aliasing analog filter
- On-chip accurate reference and reference buffer
- Dual 16-bit Successive Approximation Register (SAR) ADC
- 2x 1MSPS throughput rate
- Oversampling capability with digital filter
- Flexible sequencer with burst mode

Flexible parallel/serial interface:
- SPI/QSPI/MICROWIRE/DSP compatible
- Optional Cyclic Redundancy Check (CRC) error checking
Hardware/software configuration
Performance:
- 92dB SNR @ 500kSPS (2x oversampling)
- 90.5dB SNR @ 1MSPS
- -103dB THD
- ±1LSB INL (typical) and ±0.99LSB DNL (maximum)
- 8kV ESD rating on analog input channels
On-chip self detect function
80-lead LQFP package