Overview
The ADS7953SDBTR is a 12-bit, 1-MSPS (mega-samples per second), 16-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 ADS7953SDBTR features a capacitor-based successive approximation register (SAR) ADC with inherent sample and hold, making it suitable for a wide range of data acquisition applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rate | 1 MSPS |
| Number of Channels | 16 |
| Input Type | Single-ended |
| 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, controlled by CS and SCLK |
| Input Ranges | 0 V to VREF and 0 V to 2 × VREF |
| Package | TSSOP (DBT) with 38 pins |
| Operating Temperature Range | -40°C to 125°C |
| 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 |
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
- Two programmable alarm levels per channel
- Four individually configurable GPIOs in TSSOP package
- Low power consumption, suitable for battery-powered and isolated power-supply applications
- Power-down feature with 1 µA current
- Wide analog and I/O supply ranges for flexible integration
Applications
The ADS7953SDBTR is designed for various 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 high precision and low power
- Aerospace and defense systems where reliability and precision are critical
Q & A
- What is the resolution of the ADS7953SDBTR?
The ADS7953SDBTR has a resolution of 12 bits.
- What is the sample rate of the ADS7953SDBTR?
The sample rate is 1 MSPS (mega-samples per second).
- How many channels does the ADS7953SDBTR have?
The device has 16 single-ended channels.
- What is the analog supply range of the ADS7953SDBTR?
The analog supply range is from 2.7 V to 5.25 V.
- What is the serial interface speed of the ADS7953SDBTR?
The serial interface operates at 20 MHz and is controlled by CS and SCLK.
- Does the ADS7953SDBTR support multiple input ranges?
Yes, it supports two software-selectable unipolar input ranges: 0 V to VREF and 0 V to 2 × VREF.
- What is the typical power dissipation of the ADS7953SDBTR 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 ADS7953SDBTR?
The power-down current is 1 µA.
- What is the input bandwidth of the ADS7953SDBTR?
The input bandwidth is 47 MHz at 3 dB.
- What types of applications is the ADS7953SDBTR suitable for?
The ADS7953SDBTR is suitable for battery-powered systems, isolated power-supply applications, industrial automation, medical devices, and aerospace and defense systems.
