ADP322

RECOMMENDED FOR NEW DESIGNS

Triple, 200 mA, Low Noise, High PSRR Voltage Regulator

Data Sheet (Rev. E) Product Selection Table
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Overview

  • Fixed (ADP322) and adjustable output (ADP323) options
  • Bias voltage range (VBIAS): 2.5 V to 5.5 V
  • LDO input voltage range (VIN1/VIN2, VIN3): 1.8 V to 5.5 V
  • Three 200 mA low dropout voltage regulators (LDOs)
  • 16-lead, 3 mm × 3 mm LFCSP
  • Initial accuracy: ±1%
  • Stable with 1 µF ceramic output capacitors
  • No noise bypass capacitor required
  • 3 independent logic controlled enables
  • Overcurrent and thermal protection
  • Key specifications
    • High PSRR
      • 76 dB PSRR up to 1 kHz
      • 70 dB PSRR at 10 kHz
      • 60 dB PSRR at 100 kHz
      • 40 dB PSRR at 1 MHz
    • Low output noise
      • 24 µV rms typical output noise at VOUT = 1.2 V
      • 43 µV rms typical output noise at VOUT = 2.8 V
  • Excellent transient response
  • Low dropout voltage: 110 mV at 200 mA load
  • 85 µA typical ground current at no load, all LDOs enabled
  • 100 µs fast turn on circuit
  • Guaranteed 200 mA output current per regulator
  • −40°C to +125°C junction temperature
ADP322
Triple, 200 mA, Low Noise, High PSRR Voltage Regulator
ADP323 Functional Block Diagram ADP322 Pin Configuration
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Documentation

Data Sheet 1

User Guide 2

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Tools & Simulations

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Evaluation Kits

EVAL-ADP322

ADP322 Evaluation Board

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Product Details

This product has individual evaluations boards as well as the RedyKit&tm;.

The ADP322CPZ-REDYKIT is available with a triple, fixed LDO evaluation board and a triple, adjustable LDO evaluation board. All surface-mount ADP322 parts are sorted and stored in the kit with the Analog Devices, Inc., part number and fixed output voltage clearly printed on each zip-top bag.


The ADP322/ADP323 evaluation board is used to demonstrate the functionality of the ADP322/ADP323 series of linear regulators. Simple device measurements, such as line and load regulation, dropout voltage, and ground current, can be demonstrated with two voltage supplies, a few voltmeters, current meters, and load resistors.


Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage supply, a voltmeter, a current meter, and load resistors.
EVAL-ADP322
ADP322 Evaluation Board

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