AD7294
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AD7294

12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense

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warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
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Part Details
Part Models 4
1ku List Price Starting From $10.83
Features
  • 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
Additional Details
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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

  • Cellular base stations
    GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, WiMAX
  • Point-to-multipoint and other RF transmission systems
  • 12 V, 24 V, 48 V automotive applications
  • Industrial controls
  • Part Models 4
    1ku List Price Starting From $10.83

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    Documentation

    Documentation

    Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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    Product Lifecycle

    PCN

    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

    Dec 16, 2011

    - 11_0311

    AD7294 Datasheet Specification Change

    AD7294BCPZ

    PRODUCTION

    AD7294BCPZRL

    PRODUCTION

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Nov 3, 2010

    - 10_0328

    AD7294 SFDR Specification Change

    AD7294BCPZ

    PRODUCTION

    AD7294BCPZRL

    PRODUCTION

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    May 31, 2010

    - 10_0054

    AD7294 Datasheet Specification Change

    AD7294BCPZ

    PRODUCTION

    AD7294BCPZRL

    PRODUCTION

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Jul 8, 2015

    - 14_0257

    Assembly Transfer of Select 7x7 TQFP Products to Amkor Philippines

    Sep 13, 2011

    - 11_0214

    AD7294 TQFP Devices: Removal of DAC HIGH Z Mode Description from AD7294 Datasheet.

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Dec 21, 2009

    - 06_0159

    Qualification of 8" S6 wafer fab process at Analog Devices, Limerick, Ireland.

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Jun 16, 2009

    - 09_0027

    Conversion to Laser Mark for the LQFP Packages (Single Grades)

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Apr 23, 2009

    - 09_0082

    AD7294 Datasheet Specification Change

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Filter by Model

    reset

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    Part Models

    Product Lifecycle

    PCN

    Apr 1, 2015

    - 15_0024

    arrow down

    Conversion of 8x8mm and 9x9mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines

    Dec 16, 2011

    - 11_0311

    arrow down

    AD7294 Datasheet Specification Change

    AD7294BCPZ

    PRODUCTION

    AD7294BCPZRL

    PRODUCTION

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Nov 3, 2010

    - 10_0328

    arrow down

    AD7294 SFDR Specification Change

    AD7294BCPZ

    PRODUCTION

    AD7294BCPZRL

    PRODUCTION

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    May 31, 2010

    - 10_0054

    arrow down

    AD7294 Datasheet Specification Change

    AD7294BCPZ

    PRODUCTION

    AD7294BCPZRL

    PRODUCTION

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Jul 8, 2015

    - 14_0257

    arrow down

    Assembly Transfer of Select 7x7 TQFP Products to Amkor Philippines

    Sep 13, 2011

    - 11_0214

    arrow down

    AD7294 TQFP Devices: Removal of DAC HIGH Z Mode Description from AD7294 Datasheet.

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Dec 21, 2009

    - 06_0159

    arrow down

    Qualification of 8" S6 wafer fab process at Analog Devices, Limerick, Ireland.

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Jun 16, 2009

    - 09_0027

    arrow down

    Conversion to Laser Mark for the LQFP Packages (Single Grades)

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

    Apr 23, 2009

    - 09_0082

    arrow down

    AD7294 Datasheet Specification Change

    AD7294BSUZ

    PRODUCTION

    AD7294BSUZRL

    PRODUCTION

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