ADM7151ACPZ-04-R7

The ADM7151 is a low dropout (LDO) linear regulator that operates from a 4.5 V to 16 V supply and delivers up to 800 mA output current. Using an advanced proprietary architecture, the device provides high power supply rejection (greater than 90 dB from 1 kHz to 1 MHz), ultralow noise (1.7 nV/√Hz from 10 kHz to 1 MHz), and excellent line and load transient response with a single 10 μF ceramic output capacitor. The output voltage is adjustable from 1.5 V to 5.1 V using two resistors. The ADM7151 is available in two versions, optimized for power dissipation and PSRR performance based on input and output voltage. The ADM7151 regulator output noise is 1.0 μV rms (100 Hz to 100 kHz), with a noise spectral density of 1.7 nV/√Hz from 10 kHz to 1 MHz. The ADM7151 is offered in an 8-lead, 3 mm × 3 mm LFCSP and an 8-lead SOIC package, providing a compact footprint with excellent thermal performance for thin, small form factor applications requiring up to 800 mA output current.

Applications

• Applications sensitive to power supply noise
• RF mixers, PLLs, VCOs, and PLLs with integrated VCO
• Clock distribution circuits
• Ultrasound and other imaging applications
• High-speed RF transceivers
• High-speed, 16-bit and above ADCs
• Communications and infrastructure
• Cable DAC drivers

Key features

• Total integrated noise, 100 Hz to 100 kHz: 1.0 μV rms
• Total integrated noise, 70 Hz to 100 kHz: 1.6 μV rms
• Noise spectral density: 1.7 nV/√Hz (10 kHz to 1 MHz)
• PSRR at 400 mA load: > 90 dB (1 kHz to 100 kHz, Vout = 5 V)
• > 60 dB (1 MHz, Vout = 5 V)
• Dropout voltage: 0.6 V (Vout = 5 V, 800 mA load)
• Initial voltage accuracy: ±1%
• Voltage accuracy over full line, load, and temperature range: ±2%
• Quiescent current (IGND): 4.3 mA (no load)
• Low shutdown current: 0.1 μA
• Stable with 10 μF ceramic output capacitor
• 8-lead LFCSP and 8-lead SOIC packages