Analog Devices Inc. AD7606C-18 8-Channel DAS with 18-bit 1 MSPS ADC

Analog Devices Inc. AD7606C-18 8-Channel DAS with 18-bit 1 MSPS ADC is an 18-bit, simultaneous sampling, analog-to-digital Data Acquisition System (DAS) with eight channels. Each channel has analog input clamp protection, a programmable gain amplifier (PGA), a low-pass filter (LPF). The AD7606C also has an 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The AD7606C-18 contains a flexible digital filter, a low drift, 2.5V precision reference, a reference buffer to drive the ADC, and flexible parallel and serial interfaces.

Features

18-bit ADC with 1MSPS on all channels
Input buffer with 1MΩ minimum analog input impedance (R_IN)
Single 5V analog supply and 1.71V to 5.25V V_DRIVE
Per-channel selectable analog input ranges
- Bipolar single-ended: ±12.5V, ±10V, ±6.25V, ±5V, ±2.5V
- Unipolar single-ended: 0V to 12.5V, 0V to 10V, 0V to 5V
- Bipolar differential: ±20V, ±12.5V, ±10V, ±5V
Two bandwidth options: 25kHz and 220kHz, per channel
Flexible digital filter, oversampling ratio up to 256
−40°C to +125°C operating range

±21V input clamp protection with 6kV ESD
Pin to pin compatible to the AD7606B, AD7608, and AD7609
Performance
- 93dB SNR
- 102dB SNR, oversampling by 32
- −100dB THD
- TUE = 0.05% of FSR maximum, external reference
- ±1 ppm/°C positive and negative FS error drift
- ±3 ppm/°C reference temperature coefficient