The ADM7151ARDZ-04-R7 is a low dropout (LDO) linear regulator that operates from 4.5 V to 16 V and provides up to 800 mA of output current. Using an advanced proprietary architecture, it provides high power supply rejection (>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 10 μF ceramic output capacitor. The output voltage can be set to any voltage between 1.5 V and 5.1 V with two resistors.
The ADM7151ARDZ-04-R7 is available in two models that optimize power dissipation and PSRR performance as a function of input and output voltage. See Table 6 and Table 7 for selection guides.
The ADM7151ARDZ-04-R7 regulator output noise is 1.0 μV rms from 100 Hz to 100 kHz, and the noise spectral density is 1.7 nV/√Hz from 10 kHz to 1 MHz.
The ADM7151ARDZ-04-R7 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 800 mA of output current in a small, low profile footprint.
ADM7151ARDZ-04-R7 is an adjustableVout device. For fixed Vout version of the ADM7151, see theADM7150.
Feature
- Input voltage range: 4.5 V to 16 V
- Maximum output current: 800 mA
- Adjustable output from 1.5 V to 5.1 V
- Low noise
- 1.0 μV rms total integrated noise from 100 Hz to 100 kHz
- 1.6 μV rms total integrated noise from 10 Hz to 100 kHz
- Noise spectral density: 1.7 nV√Hz from 10 kHz to 1 MHz
- Power supply rejection ratio (PSRR) at 400 mA load
- >90 dB from 1 kHz to 100 kHz, VOUT = 5 V
- >60 dB at 1 MHz, VOUT = 5 V
- Dropout voltage: 0.6 V at VOUT = 5 V, 800 mA load
- Initial voltage accuracy: ±1%
- Voltage accuracy over line, load and temperature: ±2%
- Quiescent current (IGND): 4.3 mA at no load
- Low shutdown current: 0.1 μA
- Stable with a 10 μF ceramic output capacitor
- 8-lead LFCSP package and 8-lead SOIC package
Applications
- Regulated power noise sensitive applications
- RF mixers, phase-locked loops (PLLs), voltage-controlled oscillators (VCOs), and PLLs with integrated VCOs
- Clock distribution circuits
- Ultrasound and other imaging applications
- High speed RF transceivers
- High speed, 16-bit or greater ADCs
- Communications and infrastructure
- Cable digital-to-analog converter (DAC) drivers
(Picture: Pinout)
