Overview
The AD7609BSTZ-RL, produced by Analog Devices Inc., is an 18-bit, 8-channel, true differential, simultaneous sampling analog-to-digital data acquisition system (DAS). This component is designed for high-precision data acquisition and features a comprehensive set of functionalities that make it suitable for a wide range of applications. The AD7609 operates from a single 5 V supply and can accommodate ±20 V and ±10 V true bipolar differential input signals, sampling at throughput rates up to 200 kSPS for all channels.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|
| Resolution | 18 bits | Number of bits in the ADC | |||
| Number of Channels | 8 | Number of analog input channels | |||
| Input Range | ±20 V, ±10 V | True bipolar differential input ranges | |||
| Sampling Rate | 200 kSPS | Throughput rate per channel | |||
| Analog Input Impedance | 1 MΩ | Input impedance regardless of sampling frequency | |||
| Input Clamp Protection | ±16.5 V | Voltage tolerance on each analog input pin | |||
| Antialiasing Filter | -3 dB cutoff frequency of 32 kHz | Filter characteristics | |||
| Power Supply | 4.75 V | 5 V | 5.25 V | V | Operating voltage range |
| Power Consumption (Normal Mode) | 16 mA | 20 mA | 28.5 mA | mA | At fSAMPLE = 200 kSPS |
| Power Dissipation (Normal Mode) | 80 mW | 100 mW | 157 mW | mW | At fSAMPLE = 200 kSPS |
Key Features
- True Differential Inputs: The AD7609 features true differential inputs, allowing for accurate measurement of bipolar signals.
- Simultaneous Sampling: All eight channels sample simultaneously, ensuring synchronized data acquisition.
- On-Chip Filtering: Includes a second-order antialiasing filter with a -3 dB cutoff frequency of 32 kHz and 40 dB antialias rejection at 200 kSPS.
- Flexible Digital Filter: Pin-driven digital filter that improves SNR and reduces the -3 dB bandwidth.
- High Input Impedance: 1 MΩ analog input impedance, eliminating the need for driver op amps and external bipolar supplies.
- Input Clamp Protection: Tolerates voltages up to ±16.5 V on each analog input pin.
- High-Speed Interfaces: Supports high-speed serial and parallel interfaces for data transfer.
Applications
The AD7609 is suitable for various high-precision data acquisition applications, including:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: In medical equipment requiring high accuracy and simultaneous sampling.
- Aerospace and Defense: For applications needing robust and reliable data acquisition systems.
- Test and Measurement Equipment: In instruments that require simultaneous sampling of multiple channels.
Q & A
- What is the resolution of the AD7609?
The AD7609 has an 18-bit resolution.
- How many channels does the AD7609 have?
The AD7609 has 8 channels.
- What are the input ranges of the AD7609?
The AD7609 can accommodate ±20 V and ±10 V true bipolar differential input signals.
- What is the maximum sampling rate of the AD7609?
The AD7609 can sample at throughput rates up to 200 kSPS for all channels.
- What is the analog input impedance of the AD7609?
The AD7609 has an analog input impedance of 1 MΩ regardless of the sampling frequency.
- What is the input clamp protection voltage of the AD7609?
The input clamp protection circuitry can tolerate voltages up to ±16.5 V on each analog input pin.
- Does the AD7609 require external driver op amps?
No, the single supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies.
- What is the power consumption of the AD7609 in normal mode?
The power consumption in normal mode is typically 20 mA at fSAMPLE = 200 kSPS.
- What are the interfaces available on the AD7609?
The AD7609 supports high-speed serial and parallel interfaces for data transfer.
- What is the purpose of the flexible digital filter in the AD7609?
The flexible digital filter improves SNR and reduces the -3 dB bandwidth.
