Overview
The ADS7951SBDBT is a 12-bit, 1 MSPS (Mega Samples Per Second), 8-channel, single-ended 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 ADS7951SBDBT features a capacitor-based SAR (Successive Approximation Register) A/D converter with inherent sample and hold capabilities. It is designed for low power consumption, making it suitable for battery-powered and isolated power-supply applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rate | 1 MSPS |
| Number of Channels | 8 channels |
| Input Type | Single-ended |
| Package | 30-pin TSSOP (DBT) |
| Operating Temperature Range | -40°C to 125°C |
| Analog Supply Range | 2.7 V to 5.25 V |
| I/O Supply Range | 1.7 V to 5.25 V |
| Serial Interface | 20 MHz |
| Input Ranges | 0 V to VREF and 0 V to 2 × VREF |
| Power Dissipation | 14.5 mW at 1 MSPS (+VA = 5 V, +VBD = 3 V) |
| Power-Down Current | 1 µA |
| Input Bandwidth | 47 MHz at 3 dB |
Key Features
- 1-MHz sample rate serial devices
- Zero latency
- 20-MHz serial interface controlled by CS and SCLK
- Auto and manual modes for channel selection
- Two software-selectable unipolar input ranges: 0 V to VREF and 0 V to 2 × VREF
- Four individually configurable GPIOs in TSSOP package
- Two programmable alarm levels per channel
- Low power consumption, suitable for battery-powered applications
- Power-down feature for power saving at lower conversion speeds
Applications
- PLC/IPC (Programmable Logic Controllers/Industrial PCs)
- 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
Q & A
- What is the resolution of the ADS7951SBDBT?
The ADS7951SBDBT has a resolution of 12 bits.
- What is the sample rate of the ADS7951SBDBT?
The sample rate is 1 MSPS (Mega Samples Per Second).
- How many channels does the ADS7951SBDBT have?
The device has 8 channels.
- What is the input type of the ADS7951SBDBT?
The input type is single-ended.
- What is the package type of the ADS7951SBDBT?
The package type is 30-pin TSSOP (DBT).
- What is the operating temperature range of the ADS7951SBDBT?
The operating temperature range is -40°C to 125°C.
- What are the analog and I/O supply ranges for the ADS7951SBDBT?
The analog supply range is 2.7 V to 5.25 V, and the I/O supply range is 1.7 V to 5.25 V.
- What is the serial interface speed of the ADS7951SBDBT?
The serial interface speed is 20 MHz.
- Does the ADS7951SBDBT support programmable alarm levels?
Yes, it supports two programmable alarm levels per channel.
- What is the typical power dissipation of the ADS7951SBDBT at 1 MSPS?
The typical power dissipation is 14.5 mW at 1 MSPS (+VA = 5 V, +VBD = 3 V).
