ADS7924
- Intelligent Monitoring:
- Auto-Sequencing of 4-Channel Multiplexer
- Individual Alarm Thresholds for Each Channel
- Programmable Scan Rate
- MicroPOWER™ Monitoring:
- Four-Channel Scanning:
- Every 1 ms → 25 µW
- Every 10 ms → 5 µW
- < 1 µA of Power-Down Current
- Programmable Interrupt Pin Controls Shutdown/Wakeup of the Microcontroller
- Auto Power-Down Control
- PWRCON Pin Allows Shutdown of External Operational Amplifiers
- Four-Channel Scanning:
- Wide Supply Range:
- Analog Supply: 2.2 V to 5.5 V
- Digital Supply: 1.65 V to 5.5 V
- Small Footprint: 3-mm × 3-mm WQFN
The ADS7924 is a four-channel, 12-bit, analog-to-digital converter (ADC) with an I2C™ interface. With its low-power ADC core, support for low-supply operation, and a flexible measurement sequencer that essentially eliminates power consumption between conversions, the ADS7924 forms a complete monitoring system for power-critical applications such as battery-powered equipment and energy harvesting systems.
The ADS7924 features dedicated data registers and onboard programmable digital threshold comparators for each input. Alarm conditions can be programmed that generate an interrupt. The combination of data buffering, programmable threshold comparisons, and alarm interrupts minimize the host microcontroller time needed to supervise the ADS7924.
The four-channel input multiplexer (MUX) is routed through external pins to allow a common signal conditioning circuit to be used between the MUX and ADC, thereby reducing overall component count. The low-power ADC uses the analog supply as its reference and can acquire and convert signals in only 10 µs. An onboard oscillator eliminates the need to supply a master clock.
The ADS7924 is offered in a small 3-mm × 3-mm WQFN and is fully specified for operation over the industrial temperature range of –40°C to 85°C.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | ADS7924 2.2 V, 12-Bit, 4-Channel, MicroPOWER Analog-to-Digital Converter With I2C Interface datasheet (Rev. C) | PDF | HTML | 15 Sep 2017 |
Application note | A Basic Guide to I2C | PDF | HTML | 08 Nov 2022 | |
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 21 May 2015 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 2 | 17 Mar 2011 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) | 10 Nov 2010 | ||
Application note | Obtaining 17 Bits of Resolution using a 12-Bit A/D System on a Chip | 24 Jun 2010 | ||
EVM User's guide | ADS7924EVM/ADS7924EVM-PDK User's Guide | 09 Jun 2010 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADS7924EVM — ADS7924 Evaluation Module
The ADS7924EVM is an evaluation board for the ADS7924, a four-channel, 12-bit, analog-to-digital converter (ADC) with an I²C interface. The modular EVM uses the ADS7924 and minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS7924 are (...)
ADS7924EVM-PDK — ADS7924 Performance Demonstration Kit
The ADS7924EVM-PDK is a complete evaluation/demonstration kit, which combines the ADS7924EVM with the MSP430-based MMB3 motherboard for use with a personal computer. The MMB3 motherboard allows the ADS7924EVM to connect to a computer via a USB port. The ADS7924EVM-PDK is controlled by the (...)
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Receivers
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
TIDA-00782 — Portable, High Brightness HD Projection Display Reference Design using DLP® Technology
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
WQFN (RTE) | 16 | Ultra Librarian |
Ordering & quality
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- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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