AD7609 8-Channel Differential DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC
The AD7609 is an 18-bit, 8-channel, true differential, simultaneous sampling analog-to-digital data acquisition system (DAS). The part contains analog input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, an 18-bit charge redistribution successive approximation analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.
The AD7609 operates from a single 5 V supply and can accommodate ±10 V and ±5 V true bipolar differential input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ±16.5 V. The AD7609 has 1 MΩ analog input impedance regardless of sampling frequency. The single supply operation, on-chip filtering, and high input impedance elimi-nate the need for driver op amps and external bipolar supplies. The AD7609 antialiasing filter has a −3 dB cutoff frequency of 32 kHz and provides 40 dB antialias rejection when sampling at 200 kSPS. 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
- Multiaxis positioning systems
- Data Acquisition Systems
Features and Benefits- 8 simultaneously sampled inputs
- True Differential Inputs
- True bipolar analog input ranges: ±10 V, ±5 V
- Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE
- Fully integrated data acquisition solution
Analog input clamp protection
Input buffer with 1 MΩ analog input impedance
Second-order antialiasing analog filter
- Flexible parallel/serial interface
- See data sheet for additional features
| Design ToolsSoftware & Systems Requirements |
Data Sheets
Order Information
Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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AD7609BSTZ Production | 64 ld LQFP (10x10mm) | OTH 160 | -40 to 85C | 26.43 | 22.4 | Y |
AD7609BSTZ-RL Production | 64 ld LQFP (10x10mm) | REEL 1500 | -40 to 85C | 0 | 22.4 | Y |
Evaluation Boards
Part Number | Description | Price | RoHS |
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EVAL-AD7609EDZ | Evaluation Board | 150 | Y |
EVAL-CED1Z | Evaluation Board | 249 | Y |
Reference Materials