Overview
The ADS7961SRHBR is a 16-channel, 8-bit, single-ended analog-to-digital converter (ADC) produced by Texas Instruments. It belongs to the ADS79xx family, which includes 12-, 10-, and 8-bit resolution multichannel ADCs. This device is designed for low power consumption and is suitable for battery-powered and isolated power-supply applications. The ADS7961SRHBR features a capacitor-based successive approximation register (SAR) ADC with inherent sample and hold, making it versatile for various data acquisition needs.
Key Specifications
| Specification | Value |
|---|---|
| Number of Bits | 8 |
| Number of Channels | 16 |
| Sampling Rate | 1 MSPS (1 million samples per second) |
| Analog Supply Range | 2.7 V to 5.25 V |
| I/O Supply Range | 1.7 V to 5.25 V |
| Input Type | Single Ended |
| Package | 32-pin VQFN (RHB) |
| Operating Temperature Range | -40°C to 125°C |
| Data Interface | SPI |
| Input Bandwidth | 47 MHz at 3 dB |
| Typical Power Dissipation | 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS |
| Power-Down Current | 1 µA |
Key Features
- 1-MHz sample rate with zero latency
- 20-MHz serial interface controlled by CS and SCLK
- Two software-selectable unipolar input ranges: 0 to VREF and 0 to 2 × VREF
- Auto and manual modes for channel selection
- Two programmable alarm levels per channel
- One individually configurable GPIO in the VQFN package
- Low power consumption, suitable for battery-powered applications
- Power-down feature for power saving at lower conversion speeds
Applications
The ADS7961SRHBR is designed for a wide range of data acquisition applications, including industrial automation, medical devices, and battery-powered systems. Its low power consumption and flexible input ranges make it suitable for isolated power-supply applications and systems requiring high precision and reliability.
Q & A
- What is the resolution of the ADS7961SRHBR ADC?
The ADS7961SRHBR has an 8-bit resolution. - How many channels does the ADS7961SRHBR support?
The device supports 16 channels. - What is the sampling rate of the ADS7961SRHBR?
The sampling rate is 1 MSPS (1 million samples per second). - What is the analog supply range for the ADS7961SRHBR?
The analog supply range is from 2.7 V to 5.25 V. - What type of data interface does the ADS7961SRHBR use?
The device uses an SPI (Serial Peripheral Interface) data interface. - What is the operating temperature range of the ADS7961SRHBR?
The operating temperature range is from -40°C to 125°C. - How much power does the ADS7961SRHBR typically dissipate at 1 MSPS?
The typical power dissipation is 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS. - What is the power-down current of the ADS7961SRHBR?
The power-down current is 1 µA. - Does the ADS7961SRHBR support programmable alarm levels?
Yes, the device supports two programmable alarm levels per channel. - Is the ADS7961SRHBR suitable for battery-powered applications?
Yes, it is suitable due to its low power consumption.
