Overview
The ADS7951SBDBTR is a 12-bit, 1 MSPS (Mega Samples Per Second), 8-channel, single-ended Successive Approximation Register (SAR) analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS79xx family, which includes pin-compatible multichannel ADCs with resolutions of 12, 10, and 8 bits. The ADS7951SBDBTR is packaged in a 30-pin TSSOP (Thin Shrink Small Outline Package) and operates over a wide temperature range of -40°C to 125°C, making it suitable for various data acquisition applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rate | 1 MSPS |
| Number of Channels | 8 |
| Input Type | Single-Ended |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.25 V |
| Digital Supply Voltage (DVDD) | 1.7 V to 5.25 V |
| Interface | SPI (Serial Peripheral Interface) |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | TSSOP-30 |
| Power Consumption (Typical) | 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS |
| Power-Down Current | 1 µA |
| Input Bandwidth | 47 MHz at 3 dB |
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 V to VREF and 0 V to 2 × VREF
- Auto and manual modes for channel selection
- Four individually configurable GPIOs in TSSOP package
- Two programmable alarm levels per channel
- Low power consumption, suitable for battery-powered and isolated power-supply applications
- Power-down feature for power saving at lower conversion speeds
Applications
The ADS7951SBDBTR is designed for a wide range of data acquisition applications, including:
- Battery-powered devices due to its low power consumption
- Isolated power-supply applications
- Industrial automation and control systems
- Medical devices requiring precise analog-to-digital conversion
- Aerospace and defense systems where reliability and precision are critical
Q & A
- What is the resolution of the ADS7951SBDBTR?
The resolution of the ADS7951SBDBTR is 12 bits.
- What is the maximum sample rate of the ADS7951SBDBTR?
The maximum sample rate is 1 MSPS.
- How many channels does the ADS7951SBDBTR have?
The device has 8 channels.
- What is the operating temperature range of the ADS7951SBDBTR?
The operating temperature range is -40°C to 125°C.
- What type of interface does the ADS7951SBDBTR use?
The device uses a SPI (Serial Peripheral Interface).
- What are the analog and digital supply voltage ranges for the ADS7951SBDBTR?
The analog supply voltage range is 2.7 V to 5.25 V, and the digital supply voltage range is 1.7 V to 5.25 V.
- Does the ADS7951SBDBTR support power-down mode?
- What is the typical power consumption of the ADS7951SBDBTR at 1 MSPS?
The typical power consumption is 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS.
- Can the input ranges of the ADS7951SBDBTR be software-selected?
- Does the ADS7951SBDBTR have programmable alarm levels?
