Overview
The ADS7952SDBTR is a 12-bit, 1 MSPS (Mega Samples Per Second), 12-channel 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 ADS7952SDBTR features a capacitor-based successive approximation register (SAR) ADC with an inherent sample and hold function. It is designed for low power consumption, making it suitable for battery-powered and isolated power-supply applications.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 1 MSPS |
| Number of Channels | 12 |
| Input Type | Single-ended |
| Data Interface | SPI (Serial Peripheral Interface) |
| Analog Supply Range | 2.7 V to 5.25 V |
| Digital Supply Range | 1.7 V to 5.25 V |
| Operating Temperature Range | -40°C to 125°C |
| Package | 38-pin TSSOP (Thin Shrink Small Outline Package) |
| Power Dissipation | Typical 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 with a 20-MHz serial interface
- Zero latency conversion
- 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
- Four individually configurable GPIOs in the TSSOP package
- Low power consumption with a power-down current of 1 µA
- Glueless interface with most commonly used digital hosts due to a wide I/O supply range
Applications
The ADS7952SDBTR is suitable for a variety of data acquisition applications, including:
- Battery-powered systems 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 applications where low power and high precision are critical
Q & A
- What is the resolution and sampling rate of the ADS7952SDBTR?
The ADS7952SDBTR has a 12-bit resolution and a sampling rate of 1 MSPS.
- How many channels does the ADS7952SDBTR support?
The device supports 12 single-ended input channels.
- What is the analog supply range for the ADS7952SDBTR?
The analog supply range is from 2.7 V to 5.25 V.
- What type of data interface does the ADS7952SDBTR use?
The device uses a SPI (Serial Peripheral Interface) for data communication.
- What is the operating temperature range of the ADS7952SDBTR?
The operating temperature range is from -40°C to 125°C.
- What is the typical power dissipation of the ADS7952SDBTR at 1 MSPS?
The typical power dissipation is 14.5 mW at 1 MSPS with +VA = 5 V and +VBD = 3 V.
- Does the ADS7952SDBTR support programmable alarm levels?
Yes, the device supports two programmable alarm levels per channel.
- How many GPIOs are available in the TSSOP package of the ADS7952SDBTR?
There are four individually configurable GPIOs available in the TSSOP package.
- What is the input bandwidth of the ADS7952SDBTR?
The input bandwidth is 47 MHz at 3 dB.
- Is the ADS7952SDBTR RoHS compliant?
Yes, the ADS7952SDBTR is RoHS compliant.
