Overview
The ADP7156ACPZ-2.0-R7 is a high-performance, ultralow noise, and high power supply rejection ratio (PSRR) linear regulator produced by Analog Devices Inc. This regulator is designed to operate from an input voltage range of 2.3 V to 5.5 V and can deliver up to 1.2 A of output current. It is particularly optimized for radio frequency (RF) applications, offering excellent line and load transient response with minimal external components.
The device features an advanced proprietary architecture that ensures high PSRR and ultralow noise, making it suitable for applications requiring stable and clean power supply.
Key Specifications
| Parameter | Symbol | Value |
|---|---|---|
| Input Voltage Range | VIN | 2.3 V to 5.5 V |
| Output Voltage | VOUT | 2.0 V (for ADP7156ACPZ-2.0-R7) |
| Maximum Load Current | IOUT | 1.2 A |
| Total Integrated Noise (100 Hz to 100 kHz) | VNOISE | 0.9 µV rms |
| Noise Spectral Density (10 kHz to 1 MHz) | VNOISE/√Hz | 1.7 nV/√Hz |
| Power Supply Rejection Ratio (PSRR) | PSRR | High PSRR |
| Package Type | 10-Lead LFCSP (3mm x 3mm) | |
| Operating Temperature Range | TJ | -40°C to 125°C |
| Shutdown Current Consumption | ISD | 0.2 µA (typical at room temperature) |
Key Features
- Ultralow noise: 0.9 µV rms total integrated noise from 100 Hz to 100 kHz and 1.7 nV/√Hz noise spectral density from 10 kHz to 1 MHz.
- High power supply rejection ratio (PSRR) for excellent line and load transient response.
- Input voltage range of 2.3 V to 5.5 V and output voltage options including 2.0 V for the ADP7156ACPZ-2.0-R7 model.
- Maximum load current of 1.2 A.
- Compact 10-lead LFCSP (3mm x 3mm) package for space-efficient designs.
- Operating temperature range of -40°C to 125°C.
- Low shutdown current consumption of 0.2 µA (typical at room temperature).
- Optimized for use with 10 µF ceramic output capacitors for excellent transient performance.
Applications
- Radio Frequency (RF) applications requiring high PSRR and low noise.
- Wireless communication systems, such as base stations and handsets.
- Medical devices that demand stable and clean power supply.
- Aerospace and defense systems where reliability and performance are critical.
- Industrial control systems and automation equipment.
- High-performance audio and video equipment.
Q & A
- What is the input voltage range of the ADP7156?
The input voltage range of the ADP7156 is 2.3 V to 5.5 V.
- What is the maximum load current the ADP7156 can deliver?
The ADP7156 can deliver up to 1.2 A of load current.
- What are the key noise specifications of the ADP7156?
The ADP7156 has a total integrated noise of 0.9 µV rms from 100 Hz to 100 kHz and a noise spectral density of 1.7 nV/√Hz from 10 kHz to 1 MHz.
- What package types are available for the ADP7156?
The ADP7156 is available in a 10-lead LFCSP (3mm x 3mm) package.
- What is the operating temperature range of the ADP7156?
The operating temperature range of the ADP7156 is -40°C to 125°C.
- What is the typical shutdown current consumption of the ADP7156?
The typical shutdown current consumption of the ADP7156 is 0.2 µA at room temperature.
- What type of capacitors is the ADP7156 optimized for?
The ADP7156 is optimized for use with 10 µF ceramic output capacitors.
- What are some common applications of the ADP7156?
The ADP7156 is commonly used in RF applications, wireless communication systems, medical devices, aerospace and defense systems, industrial control systems, and high-performance audio and video equipment.
- How does the ADP7156 achieve high PSRR and low noise?
The ADP7156 achieves high PSRR and low noise through its advanced proprietary architecture, which includes a reference, an error amplifier, and a P-channel MOSFET pass transistor.
- What is the start-up time of the ADP7156?
The start-up time of the ADP7156 is approximately 1.2 ms for VOUT, 0.6 ms for VREG, and 0.5 ms for REF.
