Overview
The ADP7156ACPZ-1.8-R7 is a high-performance linear regulator produced by Analog Devices Inc. This component is designed to operate within a wide input voltage range of 2.3 V to 5.5 V and can deliver up to 1.2 A of output current. It features an advanced proprietary architecture that ensures ultralow noise and high power supply rejection ratio (PSRR), making it ideal for radio frequency (RF) applications. The regulator is available in compact packages, including a 10-lead, 3 mm × 3 mm LFCSP and an 8-lead SOIC, which provide excellent thermal performance and a small footprint.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 to 5.5 | V |
| Output Voltage | 1.8 | V |
| Maximum Load Current | 1.2 | A |
| Total Integrated Noise (100 Hz to 100 kHz) | 0.9 | μV rms |
| Total Integrated Noise (10 Hz to 100 kHz) | 1.6 | μV rms |
| Noise Spectral Density (10 kHz to 1 MHz) | 1.7 | nV/√Hz |
| Shutdown Current | 0.2 | μA |
| Thermal Shutdown Threshold | 150 | °C |
| Thermal Shutdown Hysteresis | 15 | °C |
| UnderVoltage Lockout (UVLO) Rising | 2.22 to 2.29 | V |
| UnderVoltage Lockout (UVLO) Falling | 1.95 to 2.02 | V |
| UVLO Hysteresis | 200 | mV |
Key Features
- Ultralow noise: 0.9 μV rms from 100 Hz to 100 kHz and 1.6 μV rms from 10 Hz to 100 kHz.
- High power supply rejection ratio (PSRR).
- Input voltage range: 2.3 V to 5.5 V.
- Maximum load current: 1.2 A.
- Compact packaging: 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC.
- Excellent thermal performance and small footprint.
- Optimized for use with 10 µF ceramic capacitors.
- Low shutdown current consumption: 0.2 µA at room temperature.
Applications
The ADP7156ACPZ-1.8-R7 is particularly suited for radio frequency (RF) applications due to its ultralow noise and high PSRR. It is also suitable for other applications requiring low noise and high stability, such as:
- Wireless communication systems
- RF amplifiers and transceivers
- High-frequency analog circuits
- Medical devices requiring low noise power supplies
- Aerospace and defense systems
Q & A
- What is the input voltage range of the ADP7156ACPZ-1.8-R7?
The input voltage range is 2.3 V to 5.5 V.
- What is the maximum load current of the ADP7156ACPZ-1.8-R7?
The maximum load current is 1.2 A.
- What are the key noise specifications of the ADP7156ACPZ-1.8-R7?
The total integrated noise is 0.9 μV rms from 100 Hz to 100 kHz and 1.6 μV rms from 10 Hz to 100 kHz. The noise spectral density is 1.7 nV/√Hz from 10 kHz to 1 MHz.
- What are the available packages for the ADP7156ACPZ-1.8-R7?
The regulator is available in a 10-lead, 3 mm × 3 mm LFCSP and an 8-lead SOIC package.
- What is the thermal shutdown threshold of the ADP7156ACPZ-1.8-R7?
The thermal shutdown threshold is 150 °C with a hysteresis of 15 °C.
- What is the shutdown current consumption of the ADP7156ACPZ-1.8-R7?
The shutdown current consumption is 0.2 µA at room temperature.
- What type of capacitors is the ADP7156ACPZ-1.8-R7 optimized for?
The regulator is optimized for use with 10 µF ceramic capacitors.
- What are some typical applications for the ADP7156ACPZ-1.8-R7?
Typical applications include RF amplifiers, wireless communication systems, high-frequency analog circuits, medical devices, and aerospace and defense systems.
- What is the under-voltage lockout (UVLO) threshold for the ADP7156ACPZ-1.8-R7?
The UVLO rising threshold is between 2.22 V and 2.29 V, and the falling threshold is between 1.95 V and 2.02 V, with a hysteresis of 200 mV.
- How does the ADP7156ACPZ-1.8-R7 achieve high PSRR?
The regulator achieves high PSRR through its advanced proprietary architecture, which includes a reference, an error amplifier, and a P-channel MOSFET pass transistor.
