AD7608 8-Channel DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
The AD7608 is an 18-bit, 8 channel, simultaneous sampling Analog-to-Digital Data Acquisition system (DAS). The part contains analog input clamp protection, 2nd order anti-alias filter, track and hold amplifier, 18-bit charge redistribution successive approximation ADC, flexible digital filter, 2.5V reference and reference buffer and high speed serial and parallel interfaces.
The AD7608 operates from a single 5V supply and can accommodate ± 10V and ±5V true bipolar input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ±16.5V. The AD7608 has 1 MΩ analog input impedance regardless of sampling frequency. The single supply operation, on chip filtering and high input impedance eliminates the need for driver op-amps and external bipolar supplies. The AD7608 antialias filter has a 3 dB cut off frequency of 22 kHz and provides 40 dB anti-alias rejection when sampling at 200ksps. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the 3 dB bandwidth.
Applications
- Power line monitoring and protection systems
- Multiphase Motor Control
- Instrumentation and control systems
- Multi-axis positioning systems
- Data Acquisition Systems
Features and Benefits- 8 Simultaneously Sampled Inputs
- True bipolar analog input ranges: ±10 V, ±5 V
- Single 5V Analog Supply, 2.3V to +5V VDRIVE
- 1MΩ Analog Input Impedance
- 2nd Order Anti-alias Analog Filter
- 7kV ESD rating on Analog input channels
- Analog Input Over Voltage Clamp Protection
- Over-sampling capability with digital filter,
e.g. 96dB SNR at 50 ksps - Fast throughput rate: 200 kSPS for all channels
- 90dB SNR at 200ksps
- Low power: 80 mW at 200 kSPS, 10 mW per channel
- On-chip accurate reference and reference buffer
- See data sheet for additional features
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Data Sheets
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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| AD7608BSTZ Production | 64 ld LQFP (10x10mm) | OTH 160 | -40 to 85C | 24.19 | 20.5 | Y |
| AD7608BSTZ-RL Production | 64 ld LQFP (10x10mm) | REEL 1500 | -40 to 85C | 0 | 20.5 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD7608SDZ | Evaluation Board | 65 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |
Reference Materials
