AD7293
Info : RECOMMENDED FOR NEW DESIGNS
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AD7293

12-Bit Power Amplifier Current Controller with ADC, DACs, Temperature and Current Sensors

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $31.57
Features
  • 4 closed-loop power amplifier (PA) drain current controllers
  • Built-in PA protection, sequencing, and alert features
  • Compatible with both depletion mode and enhancement mode power amplifiers
  • Highly integrated
    • 4 uncommitted 12-bit analog-to-digital converter (ADC) inputs
      • ±0.5 LSB typical integral nonlinearity (INL)
    • Eight 12-bit voltage digital-to-analog converters (DACs)
      • 1.3 μs maximum settling
    • 4 high-side current sense amplifiers, ±0.1% gain error
    • 2 external temperature sensor inputs, ±1.1°C accuracy
    • Internal temperature sensor, ±1.25°C accuracy
    • 2.5 V on-chip reference
  • Flexible monitoring and control ranges
    • ADC input ranges: 0 V to 1.25 V, 0 V to 2.5 V, and 0 V to 5 V
    • Bipolar DAC ranges: 0 V to +5 V, −4 V to +1 V, and −5 V to 0 V
    • Bipolar DAC reset and clamping relative to VCLAMPx voltage
    • Unipolar DAC ranges: 0 V to 5 V, 2.5 V to 7.5 V, and 5 V to 10 V
    • Current sense gain: 6.25, 12.5, 25, 50, 100, and more
    • Adjustable closed-loop setpoint ramp time
  • High-side voltage current sensing
    • 4 current sense inputs
      • 4 V to AVSS + 60 V, ±200 mV input range
  • Small package and flexible interface
    • Serial port interface (SPI) with VDRIVE supporting 1.8 V, 3 V, and 5 V interfaces
    • 56-lead LFCSP
  • Temperature range: −40°C to +125°C
Additional Details
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The AD7293 is a PA drain current controller containing functionality for general-purpose monitoring and control of current, voltage, and temperature, integrated into a single chip solution with an SPI-compatible interface.

The device features a 4-channel, 12-bit successive approximation register (SAR) ADC, eight 12-bit DACs (four bipolar and four unipolar with output ranges that can be configured to shut down under external pin control), a ±1.25°C accurate internal temperature sensor, and eight general-purpose input/output (GPIO) pins.

The device also includes limit registers for alert functions and four high-side current sense amplifiers to measure current across external shunt resistors. These amplifiers can be optionally set to operate as part of four independent closed-loop drain current controllers.

A high accuracy 2.5 V internal reference is provided to drive the DACs and the ADC. The 12-bit ADC monitors and digitizes the internal temperature sensor, and two inputs are included for the external diode temperature sensors.

Product Highlights

  1. Four independent closed-loop drain current controllers.
  2. Built-in monitoring, sequencing, and alert features.
  3. Compatible with both depletion mode and enhancement mode power amplifiers.

Applications

  • GaN and GaAs power amplifier monitoring and controls
  • Base station power amplifiers
  • General-purpose system monitoring and controls
Part Models 2
1ku List Price Starting From $31.57

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7293BCPZ
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  • HTML
AD7293BCPZ-RL
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Evaluation Kit

Evaluation Kits 1

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EVAL-AD7293

AD7293 Evaluation Board

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EVAL-AD7293

AD7293 Evaluation Board

AD7293 Evaluation Board

Features and Benefits

  • Full featured evaluation board for AD7293
  • Graphical user interface (GUI) software with USB control 
  • Various link options

Product Detail

The AD7293 is a 12-bit monitoring device with multichannel ADC, DACs, current sensors, and temperature sensors.

For full details on the AD7293, see the AD7293 data sheet and consult it when using the EVAL-AD7293SDZ. The configuration of the various link options is explained in the Evaluation Board Hardware section.

The EVAL-AD7293SDZ requires the EVAL-SDP-CB1Z board. The EVAL-AD7293SDZ interfaces to the USB port of the PC via the EVAL-SDP-CB1Z. Software that allows the user to easily program the AD7293 is available with the EVAL-AD7293SDZ.

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