AD7292
10-Bit Monitor & Control System with ADC, DACs, Temperature Sensor and GPIOs
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Overview
Features and Benefits
- 10-bit SAR ADC
-- 8 Multiplexed Analog Input Channels
-- Single-ended mode of operation
-- Differential mode of operation
-- 5 V analog input range
-- VREF, 2 × VREF, or 4 × VREF input ranges - 4 monotonic, 10-bit, 5 V DACs
-- 2µs settling time
-- Power-on reset to 0 V
-- 10 mA sink and source capability
- Internal temperature sensor
-- ±1°C accuracy - 12 general-purpose Digital I/O pins
- Internal 1.25 V reference
- Built-in monitoring features
-- Minimum and maximum value register for each channel
-- Programmable alert thresholds
-- Programmable hysteresis - See data sheet for additional features
Product Details
The AD7292 contains all the functionality required for general-purpose monitoring of analog signals and control of external devices, integrated into a single-chip solution. The AD7292 features an 8-channel, 10-bit SAR ADC, four 10-bit DACs, a ±1°C accurate internal temperature sensor, and 12 GPIOs to aid system monitoring and control.
The 10-bit, high speed, low power successive approximation register (SAR) ADC is designed to monitor a variety of single-ended input signals. Differential operation is also available by configuring VIN0 and VIN1 to operate as a differential pair.
The AD7292 offers a register programmable ADC sequencer, which enables the selection of a programmable sequence of channels for conversion.
Four 10-bit digital-to-analog converters (DACs) provide outputs from 0 V to 5 V. An internal, high accuracy, 1.25 V reference provides a separately buffered reference source for both the ADC and the DACs.
A high accuracy band gap temperature sensor is monitored and digitized by the 10-bit ADC to give a resolution of 0.03125°C. The AD7292 also features built-in limit and alarm functions.
The AD7292 is a highly integrated solution offered in a 36-lead LFCSP package with an operating temperature range of −40°C to +125°C.
APPLICATIONS
- Base Station Power Amplifier (PA) Monitoring and Control
- RF Control Loops
- Optical Communication System Control
- General-Purpose System Monitoring and Control
Product Categories
Markets and Technologies
Product Lifecycle
Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Evaluation Kits (1)
Documentation & Resources
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AN-1178: AD7292 DAC Disable Function Timing (Rev. 0)2/11/2013PDF373 kB
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UG-449: Evaluating the AD7292 10-Bit Monitor and Control System10/26/2012PDF1856 kB
Software & Systems Requirements
Evaluation Software
Product Recommendations
AD7292 Companion Parts
Recommended Digital Isolators
- For SPI Interface, low power, 5.0 kVrms isolation: ADUM4401.
- For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V): ADUM3481.
- For SPI Interface, lowest power, 2.5 kVrms isolation: ADUM1401.
- For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation: ADUM3401.
Recommended Driver Amplifiers
- For high frequency, low noise, low distortion applications: AD8022, ADA4897-1, ADA4899-1.
- For low frequency, precision, low bias current: ADA4627-1, ADA4000-2, ADA4610-2.
- For precision, low power, low distortion applications: ADA4841-1, ADA4932-1.
Support & Discussions
AD7292 Discussions
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.