
Analog Devices Inc. AD7606 16-Bit Data Acquisition Systems (DAS)
Analog Devices AD7606 16-Bit Data Acquisition Systems (DAS) offers eight, six, or four channels and operates from a single 5V supply. The AD7606 DAS includes analog input clamp protection, a second-order anti-aliasing filter, a track-and-hold amplifier, a 16-bit charge redistribution successive approximation analog-to-digital converter (ADC), a flexible digital filter, a 2.5V reference, and reference buffer, and high-speed serial and parallel interfaces. The device can accommodate ±10V and ±5V true bipolar input signals while sampling at throughput rates up to 200kSPS for all channels. The flexible digital filter is pin-driven, yields improvements in SNR, and reduces the 3dB bandwidth.
The AD7606 provides input clamp protection circuitry that can tolerate voltages up to ±16.5V. Additionally, the device has 1MΩ analog input impedance, regardless of sampling frequency. The need for driver op-amps and external bipolar supplies is eliminated with the single supply operation, on-chip filtering, and high input impedance. The device antialiasing filter has a 3dB cutoff frequency of 22kHz and allows 40dB anti-alias rejection when sampling at 200kSPS.
Features
- 8/6/4 simultaneously sampled inputs
- True bipolar analog input ranges: ±10V, ±5V
- Single 5V analog supply and 2.3V to 5V VDRIVE
- Fully integrated data acquisition solution
- Analog input clamp protection
- Input buffer with 1MΩ analog input impedance
- Second-order antialiasing analog filter
- On-chip accurate reference and reference buffer
- 16-bit ADC with 200kSPS on all channels
- Oversampling capability with digital filter
- Flexible parallel/serial interface
- SPI/QSPI™/MICROWIRE™/DSP compatible
- Performance
- 7kV ESD rating on analog input channels
- 95.5dB SNR, -107dB THD
- ±0.5LSB INL, ±0.5LSB DNL
- Low power: 100mW
- Standby mode: 25mW
- Temperature range of -40°C to +85°C
- 64-lead LQFP package
Applications
- Power-line monitoring and protection systems
- Multiphase motor control
- Instrumentation and control systems
- Multiaxis positioning systems
- Data acquisition systems (DAS)
Additional Resources
Improve System Level Performance and Robustness in Power Line Monitoring
The AD7606B integrates, on-chip, eight individual signal chains that accept either ±10V or ±5V true bipolar analog input signals despite working from a single 5V supply. These features eliminate the need for driver op amps and external bipolar supplies.
FUNCTIONAL BLOCK DIAGRAM
