AD7294-2
Info : RECOMMENDED FOR NEW DESIGNS
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AD7294-2

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

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 1
1ku List Price
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Features
  • 12-bit SAR ADC with 3 μs conversion time
    4 uncommitted analog inputs
    Differential/single-ended
    VREF, 2 × VREF input ranges
  • 2 high-side current sense inputs
    5 V to 59.4 V operating range
    0.75% maximum gain error
    ±200 mV input range
  • 1 internal temperature sensor: ±2°C accuracy
  • Built-in monitoring features
    Minimum/maximum recorder for each channel
    Programmable alert thresholds
    Programmable hysteresis
  • Internal 2.5 V reference
  • 2-wire, fast mode I2C interface
  • See data sheet for additional features
Additional Details
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The AD7294-2 contains all the functions that are required for general-purpose monitoring and control of current, voltage, and temperature, integrated into a single-chip solution. The part 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 converters (DACs) and the ADC. Four 12-bit DACs provide the outputs for voltage control. The AD7294-2 also includes limit registers for alarm functions. The part is designed for high voltage compliance: 59.4 V on the current sense inputs and up to a 15 V DAC output voltage.

The AD7294-2 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. This functionality is provided in a 64-lead TQFP, which operates over a temperature range of −40°C to +105°C.

APPLICATIONS

  • Cellular base stations GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, WiMAXM
  • Point-to-multipoint and other RF transmission systems
  • 12 V, 24 V, 48 V automotive applications
  • Industrial controls
Part Models 1
1ku List Price
price unavailable

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7294-2BSUZ-RL
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Evaluation Kit

Evaluation Kits 1

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EVAL-AD7294-2

AD7294-2 Evaluation Board

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EVAL-AD7294-2

AD7294-2 Evaluation Board

AD7294-2 Evaluation Board

Features and Benefits

  • Full featured evaluation board for the AD7294-2
  • Various link options
  • PC control in conjunction with evaluation software
  • System demonstration platform (SDP) compatible
  • PC software for control of AD7294-2
  • Serial interface SPI®-/QSPI-/DSP-compatible

Product Detail

Full details on the AD7294-2 are available in the AD7294-2 data sheet, which is available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board. Configuration of the various link options is explained in the Evaluation Board Hardware section.


The evaluation board interfaces to the USB port of a PC via the SDP board. Software is available with the evaluation board which allows the user to easily program the AD7294-2.


The kit requires purchasing the controller board for the system demonstration platform ( EVAL-SDP-CB1Z).


SDP-B needs to be ordered with this product. The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

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