Overview
The AD7609BSTZ, 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 to handle bipolar differential input signals and operates from a single 5 V supply. It features analog input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, and an 18-bit charge redistribution successive approximation analog-to-digital converter (ADC). The AD7609 also includes a flexible digital filter, a 2.5 V reference and reference buffer, and high-speed serial and parallel interfaces.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 18-bit |
| Number of Channels | 8 |
| Sampling Rate | Up to 200 kSPS |
| Input Type | True Differential, Bipolar |
| Input Voltage Range | ±20 V, ±10 V |
| Analog Input Impedance | 1 MΩ |
| Supply Voltage | 4.75 V to 5.25 V |
| Supply Current | 20 mA |
| Operating Temperature | -40°C to 85°C |
| Power Dissipation | 100 mW |
| Integral Nonlinearity (INL) | 7.5 LSB |
| Differential Nonlinearity (DNL) | -0.99 LSB |
| Signal to Noise Ratio (SNR) | 101 dB |
| Interface | SPI, Parallel |
| Package | 64-Lead LQFP (10mm x 10mm) |
Key Features
- Analog input clamp protection to tolerate voltages up to ±16.5 V on each analog input pin.
- A second-order antialiasing filter with a −3 dB cutoff frequency of 32 kHz and 40 dB antialias rejection when sampling at 200 kSPS.
- A flexible digital filter that improves SNR and reduces the −3 dB bandwidth.
- High-speed serial and parallel interfaces for data transfer.
- Single supply operation eliminating the need for driver op amps and external bipolar supplies.
- On-chip filtering and high input impedance (1 MΩ) regardless of sampling frequency.
Applications
The AD7609 is suitable for various applications requiring high-precision data acquisition, such as industrial process control, medical devices, test and measurement equipment, and automotive systems. Its ability to handle bipolar differential input signals and simultaneous sampling makes it particularly useful in applications where multiple channels need to be sampled at the same time with high accuracy.
Q & A
- What is the resolution of the AD7609BSTZ?
The AD7609BSTZ has an 18-bit resolution. - How many channels does the AD7609BSTZ support?
The AD7609BSTZ supports 8 channels. - What is the maximum sampling rate of the AD7609BSTZ?
The maximum sampling rate is up to 200 kSPS. - What type of input signals can the AD7609BSTZ handle?
The AD7609BSTZ can handle true differential, bipolar input signals. - What is the operating supply voltage range for the AD7609BSTZ?
The operating supply voltage range is 4.75 V to 5.25 V. - What is the typical supply current of the AD7609BSTZ?
The typical supply current is 20 mA. - What is the operating temperature range for the AD7609BSTZ?
The operating temperature range is -40°C to 85°C. - What is the power dissipation of the AD7609BSTZ?
The power dissipation is 100 mW. - What interfaces does the AD7609BSTZ support?
The AD7609BSTZ supports SPI and parallel interfaces. - What is the package type of the AD7609BSTZ?
The package type is a 64-Lead LQFP (10mm x 10mm).
