Overview
The ADS7953SRHBT 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 ADS7953SRHBT 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. It operates with very low power consumption, making it ideal for battery-powered and isolated power-supply applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rate | 1 MSPS |
| Number of Channels | 16 channels |
| 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 |
| Input Ranges | 0 to VREF and 0 to 2 × VREF |
| Package Type | 32-pin VQFN (RHB) |
| 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
- Auto and manual modes for channel selection
- Two software-selectable unipolar input ranges: 0 to VREF and 0 to 2 × VREF
- Two programmable alarm levels per channel
- One individually configurable GPIO in VQFN package
- Low power consumption and power-down feature for power saving
- High input impedance and capacitor-based SAR A/D converter with inherent sample and hold
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 ADS7953SRHBT?
The ADS7953SRHBT has a resolution of 12 bits.
- What is the sample rate of the ADS7953SRHBT?
The sample rate is 1 MSPS (mega-samples per second).
- How many channels does the ADS7953SRHBT have?
The device has 16 single-ended channels.
- What is the analog supply range of the ADS7953SRHBT?
The analog supply range is from 2.7 V to 5.25 V.
- What is the I/O supply range of the ADS7953SRHBT?
The I/O supply range is from 1.7 V to 5.25 V.
- What type of serial interface does the ADS7953SRHBT use?
The device uses a 20-MHz serial interface controlled by CS and SCLK.
- What are the input ranges of the ADS7953SRHBT?
The input ranges are 0 to VREF and 0 to 2 × VREF.
- What is the typical power dissipation of the ADS7953SRHBT 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 ADS7953SRHBT?
The power-down current is 1 µA.
- What are some common applications of the ADS7953SRHBT?
Common applications include PLC/IPC, Optical Line Card Monitoring, Medical Instrumentation, Digital Power Supplies, and High-Speed Data Acquisition Systems.
