Overview
The ADS7951SRGER is a part of the ADS79xx family of multichannel analog-to-digital converters (ADCs) produced by Texas Instruments. This device is a 12-bit, 8-channel ADC with a 1-MHz sample rate, designed for high-speed data acquisition and various industrial applications. It features a capacitor-based successive approximation register (SAR) ADC with inherent sample and hold, making it suitable for battery-powered and isolated power-supply applications due to its very low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Number of Channels | 8 | |
| Sample Rate | 1 MHz | |
| Analog Supply Range | 2.7 to 5.25 V | |
| I/O Supply Range | 1.7 to 5.25 V | |
| Input Ranges | 0 to VREF, 0 to 2 × VREF | |
| Serial Interface Speed | 20 MHz | |
| Typical Power Dissipation | 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS | |
| Power-Down Current | 1 μA | |
| Input Bandwidth | 47 MHz at 3 dB | |
| Package Type | 32-Pin VQFN | |
| Operating Temperature Range | –40°C to 125°C |
Key Features
- Zero latency and 20-MHz serial interface for high-speed data transfer.
- Auto and manual modes for channel selection, allowing flexible operation.
- Two software-selectable unipolar input ranges: 0 to VREF and 0 to 2 × VREF.
- Two programmable alarm levels per channel for monitoring critical thresholds.
- Four individually configurable GPIOs in the TSSOP package (one GPIO in the VQFN package).
- Low power consumption, making it suitable for battery-powered and isolated power-supply applications.
- Glueless interface with most commonly used digital hosts due to a wide I/O supply range.
Applications
- PLC/IPC and industrial control systems.
- Optical line card monitoring.
- Medical instrumentation.
- Digital power supplies.
- Multi-channel, general-purpose signal monitoring.
- High-speed data acquisition systems.
- High-speed closed-loop systems.
- Automotive systems and power supply monitoring.
- Battery-powered systems.
Q & A
- What is the resolution of the ADS7951SRGER ADC?
The ADS7951SRGER is a 12-bit ADC.
- How many channels does the ADS7951SRGER support?
The ADS7951SRGER supports 8 channels.
- What is the sample rate of the ADS7951SRGER?
The sample rate is 1 MHz.
- What is the analog supply range for the ADS7951SRGER?
The analog supply range is from 2.7 V to 5.25 V.
- What are the input ranges for the ADS7951SRGER?
The input ranges are 0 to VREF and 0 to 2 × VREF.
- What is the typical power dissipation of the ADS7951SRGER 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 ADS7951SRGER?
The power-down current is 1 μA.
- What is the input bandwidth of the ADS7951SRGER?
The input bandwidth is 47 MHz at 3 dB.
- In what package is the ADS7951SRGER available?
The ADS7951SRGER is available in a 32-Pin VQFN package.
- What is the operating temperature range for the ADS7951SRGER?
The operating temperature range is –40°C to 125°C.
