AD7294
NOT RECOMMENDED FOR NEW DESIGNS12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense
- Part Models
- 4
- 1ku List Price
- Starting From $10.83
Part Details
- 12-bit SAR ADC with 3 μs conversion time
- 4 uncommitted analog inputs - (Please see data sheet for additional information)
- 2 high-side current sense inputs
5 V to 59.4 V operating range - (Please see data sheet for additional information) - 2 external diode temperature sensor inputs
−55°C to +150°C measurement range (Please see data sheet for additional information) - 1 internal temperature sensor ±2°C accuracy
- Built-in monitoring features
Minimum/maximum recorder for each channel - (Please see data sheet for additional information) - Four 12-bit monotonic 15 V DACs
- 5 V span, 0 V to 10 V offset - (Please see data sheet for additional information)
- Internal 2.5 V reference
- 2-wire fast mode I2C interface
- Temperature range: −40°C to +105°C
- Package type: 64-lead TQFP or 56-lead LFCSP
The AD7294 contains all the functions required for general-purpose monitoring and control of current, voltage, and temperature integrated into a single-chip solution. The device includes low voltage (±200 mV) analog input sense amplifiers for current monitoring across shunt resistors, temperature sense inputs, and four uncommitted analog input channels multiplexed into a SAR analog-to-digital converter (ADC) with a 3 μs conversion time. A high accuracy internal reference is provided to drive both the digital-to-analog converter (DAC) and ADC. Four 12-bit DACs provide the outputs for voltage control. The AD7294 also includes limit registers for alarm functions. The device is designed on Analog Devices, Inc., high voltage DMOS process for high voltage compliance, 59.4 V on the current sense inputs, and up to a 15 V DAC output voltage.
The AD7294 is a highly integrated solution that offers all the functionality necessary for precise control of the power amplifier in cellular base station applications. In these types of applications, the DACs provide 12-bit resolution to control the bias currents of the power transistors. Thermal diode-based temperature sensors are incorporated to compensate for temperature effects. The ADC monitors the high-side current and temperature. All this functionality is provided in a 64-lead TQFP or a 56-lead LFCSP operating over a temperature range of −40°C to +105°C.
APPLICATIONS
GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, WiMAX
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Analog Dialogue 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7294BCPZ | 56-Lead LFCSP (8mm x 8mm) | ||
| AD7294BCPZRL | 56-Lead LFCSP (8mm x 8mm) | ||
| AD7294BSUZ | 64-Lead TQFP (7mm x 7mm) | ||
| AD7294BSUZRL | 64-Lead TQFP (7mm x 7mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
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Apr 1, 2015 - 15_0024 Conversion of 8x8mm and 9x9mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines |
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| AD7294BCPZ | PRODUCTION | |
| AD7294BCPZRL | PRODUCTION | |
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Dec 16, 2011 - 11_0311 AD7294 Datasheet Specification Change |
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| AD7294BCPZ | PRODUCTION | |
| AD7294BCPZRL | PRODUCTION | |
| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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Nov 3, 2010 - 10_0328 AD7294 SFDR Specification Change |
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| AD7294BCPZ | PRODUCTION | |
| AD7294BCPZRL | PRODUCTION | |
| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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May 31, 2010 - 10_0054 AD7294 Datasheet Specification Change |
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| AD7294BCPZ | PRODUCTION | |
| AD7294BCPZRL | PRODUCTION | |
| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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Jul 8, 2015 - 14_0257 Assembly Transfer of Select 7x7 TQFP Products to Amkor Philippines |
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| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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Sep 13, 2011 - 11_0214 AD7294 TQFP Devices: Removal of DAC HIGH Z Mode Description from AD7294 Datasheet. |
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| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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Dec 21, 2009 - 06_0159 Qualification of 8" S6 wafer fab process at Analog Devices, Limerick, Ireland. |
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| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades) |
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| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
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Apr 23, 2009 - 09_0082 AD7294 Datasheet Specification Change |
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| AD7294BSUZ | PRODUCTION | |
| AD7294BSUZRL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| High Speed Op Amps 1 | ||
| AD8022 | PRODUCTION | Dual High Speed, Low Noise Op Amp |
| Operational Amplifiers 3 | ||
| ADA4692-2 | PRODUCTION | Low Power, 3.6 MHz, Low Noise, Rail-to-Rail Output, Operational Amplifiers |
| AD8692 | PRODUCTION | Low Cost, Low Noise, Dual CMOS Rail-to-Rail Output Operational Amplifier |
| AD8606 | PRODUCTION | Precision, Low Noise, RRIO, CMOS Op Amp (Dual) |
| RF Receivers 2 | ||
| AD8317 | PRODUCTION | 1 MHz to 10 GHz, 55 dB Log Detector/Controller |
| AD8362 | PRODUCTION |
50 Hz to 3.8 GHz 65d dB TruPwr™ Detector |
| Voltage References 5 | ||
| AD1582 | PRODUCTION | 2.5V Micropower, Precisions Series Mode Voltage References |
| ADR391 | PRODUCTION | 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| ADR441 | PRODUCTION | Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source |
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |
| Parts | Product Life Cycle | Description |
|---|---|---|
| AD7294-2 | RECOMMENDED FOR NEW DESIGNS | 12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense |
Evaluation Kits
AD7294 Evaluation Board
Resources
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