Overview
The ADP7156ACPZ-3.3-R7 is a high-performance, ultralow noise, linear voltage 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 provides a fixed output voltage of 3.3 V with a maximum load current of 1.2 A. It is particularly suited for radio frequency (RF) applications due to its high power supply rejection ratio (PSRR) and low noise characteristics.
The ADP7156 uses an advanced proprietary architecture to achieve excellent line and load transient response, even with a small 10 µF ceramic output capacitor. It is available in a compact 10-lead, 3 mm × 3 mm LFCSP package, which offers excellent thermal performance and a low profile footprint.
Key Specifications
| Parameter | Symbol | Value |
|---|---|---|
| Input Voltage Range | VIN | 2.3 V to 5.5 V |
| Output Voltage | VOUT | 3.3 V |
| 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, 3 mm × 3 mm LFCSP |
| Thermal Shutdown Threshold | TJ | 150 °C |
| UnderVoltage Lockout (UVLO) Threshold | UVLO | Rising: 2.22 V to 2.29 V, Falling: 1.95 V to 2.02 V |
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.
- Maximum load current of 1.2 A.
- Input voltage range of 2.3 V to 5.5 V.
- Compact 10-lead, 3 mm × 3 mm LFCSP package for excellent thermal performance and low profile footprint.
- Optimized for use with 10 µF ceramic output capacitors.
- Thermal shutdown and under-voltage lockout (UVLO) protection.
Applications
The ADP7156ACPZ-3.3-R7 is particularly suited for radio frequency (RF) applications, including but not limited to:
- RF power amplifiers and transceivers.
- Baseband and IF circuits.
- Wireless communication systems (e.g., cellular, Wi-Fi, Bluetooth).
- Medical devices requiring low noise power supplies.
- Aerospace and defense systems where high reliability and low noise are critical.
Q & A
- What is the input voltage range of the ADP7156ACPZ-3.3-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the fixed output voltage of the ADP7156ACPZ-3.3-R7?
The fixed output voltage is 3.3 V.
- What is the maximum load current the ADP7156ACPZ-3.3-R7 can deliver?
The maximum load current is 1.2 A.
- What are the noise characteristics of the ADP7156ACPZ-3.3-R7?
The regulator has 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.
- What package type is the ADP7156ACPZ-3.3-R7 available in?
The regulator is available in a 10-lead, 3 mm × 3 mm LFCSP package.
- What is the thermal shutdown threshold of the ADP7156ACPZ-3.3-R7?
The thermal shutdown threshold is 150 °C.
- Does the ADP7156ACPZ-3.3-R7 have under-voltage lockout (UVLO) protection?
Yes, it has UVLO protection with rising and falling thresholds between 2.22 V to 2.29 V and 1.95 V to 2.02 V, respectively.
- What type of capacitors is the ADP7156ACPZ-3.3-R7 optimized for?
The regulator is optimized for use with 10 µF ceramic output capacitors.
- What are some typical applications for the ADP7156ACPZ-3.3-R7?
Typical applications include RF power amplifiers, baseband and IF circuits, wireless communication systems, medical devices, and aerospace and defense systems.
- How does the ADP7156ACPZ-3.3-R7 achieve high PSRR and low noise?
The regulator uses an advanced proprietary architecture to achieve high PSRR and low noise, ensuring excellent line and load transient response.
