Analog Devices Inc. ADP1764 Low Noise, CMOS Linear Regulators

Analog Devices Inc. ADP1764 Regulators are low noise, Low Dropout (LDO) CMOS linear regulators. The ADP1764 regulators operate from a single input supply with an input voltage as low as 1.10V. The regulators do not require an external bias supply to increase efficiency and deliver up to a 4A output current. The small package size and low 47mV dropout voltage at a 4A load enable the ADP1764 to operate in a minimal PCB area without compromising performance. Optimized for stable operation with small 22μF ceramic output capacitors, the ADP1764 regulators achieve optimal transient performance. Analog Devices ADP1764 regulators have an ultra-low 2μVrms noise rating and ±1.5% fixed output voltage accuracy over line, load, and temperature. Thermal overload and short-circuit protection circuits prevent damage in adverse conditions.


  • 4A maximum output current
  • Low Input Voltage Supply Range
    • VIN = 1.10V to 1.98V, no external bias supply required
  • 0.55V to 1.5V fixed output voltage range
  • 0.5V to 1.5V adjustable output voltage range
  • Optimized for small 22μF ceramic capacitors
  • Current-limit and thermal overload protection
  • Power-good indicator
  • Ultralow noise: 2μVrms, 100Hz to 100kHz
  • Noise Spectral Density
    • 5nV/√Hz at 10kHz
    • 4nV/√Hz at 100kHz
  • 47mV typical dropout voltage at 4A load
  • 5mA typical operating supply current at no load
  • ±1.5% fixed output voltage accuracy over line, load, and temperature
  • Excellent Power Supply Rejection Ratio (PSRR) Performance
    • 69dB typical at 10kHz at 4A load
    • 46dB typical at 100kHz at 4A load
  • Excellent load/line transient response
  • Soft start to reduce inrush current
  • Precision enable
  • 16-lead, 3mm x 3mm LFCSP package


  • Regulation of noise sensitive applications
  • Radio Frequency (RF) transceivers
  • Analog-to-Digital converter (ADC) and Digital-to-Analog Converter (DAC) circuits
  • Phase-Locked Loops (PLLs)
  • Voltage Controlled Oscillators (VCOs)
  • Clocking integrated circuits
  • Field-Programmable Gate Array (FPGA) and Digital Signal Processor (DSP) supplies
  • Medical and healthcare
  • Industrial and instrumentation

ADP1764 Typical Application Circuits Diagram

Application Circuit Diagram - Analog Devices Inc. ADP1764 Low Noise, CMOS Linear Regulators
Published: 2017-08-18 | Updated: 2022-04-25