Overview
The ADP7142ARDZ-3.3-R7 is a high-performance, low dropout (LDO) linear regulator produced by Analog Devices Inc. This CMOS LDO operates from an input voltage range of 2.7 V to 40 V and provides up to 200 mA of output current. It is designed to regulate high-performance analog and mixed signal circuits, offering excellent power supply rejection, low noise, and a small footprint. The device is available in various packages, including the 8-lead SOIC package, which is compact and provides excellent thermal performance.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 40 V |
| Output Voltage | 3.3 V (fixed), adjustable with external feedback divider |
| Maximum Output Current | 200 mA |
| Voltage Dropout (Max) | 0.42 V @ 200 mA |
| Quiescent Current (Iq) | 140 µA |
| Supply Current (Max) | 320 µA |
| Power Supply Rejection Ratio (PSRR) | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V) |
| Noise (rms) | 11 µV |
| Initial Accuracy | ±0.8% |
| Package | 8-lead SOIC-EP |
| Control Features | Enable, Soft Start |
| Protection Features | Over Temperature, Short Circuit |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage
- High power supply rejection ratio (PSRR): 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- High accuracy over line, load, and temperature
- User programmable soft start with an external capacitor
- Adjustable output voltage using an external feedback divider
- Compact 8-lead SOIC package with excellent thermal performance
- Enable and soft start control features
- Over temperature and short circuit protection
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- Automotive systems
- High-performance analog and mixed signal circuits
Q & A
- What is the input voltage range of the ADP7142ARDZ-3.3-R7? The input voltage range is from 2.7 V to 40 V.
- What is the maximum output current of the ADP7142ARDZ-3.3-R7? The maximum output current is 200 mA.
- What is the typical noise level of the ADP7142ARDZ-3.3-R7? The typical noise level is 11 µV rms.
- Can the output voltage of the ADP7142ARDZ-3.3-R7 be adjusted? Yes, the output voltage can be adjusted using an external feedback divider.
- What are the control features of the ADP7142ARDZ-3.3-R7? The control features include enable and soft start.
- What protection features does the ADP7142ARDZ-3.3-R7 have? The protection features include over temperature and short circuit protection.
- In what package is the ADP7142ARDZ-3.3-R7 available? It is available in an 8-lead SOIC-EP package.
- What is the quiescent current of the ADP7142ARDZ-3.3-R7? The quiescent current is 140 µA.
- What is the power supply rejection ratio (PSRR) of the ADP7142ARDZ-3.3-R7? The PSRR is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V).
- In which applications is the ADP7142ARDZ-3.3-R7 commonly used? It is commonly used in communications, medical and healthcare, industrial and instrumentation, and automotive systems.
