Overview
The ADP7142ACPZN-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This regulator 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 for high-performance analog and mixed-signal circuits, offering high power supply rejection ratio (PSRR), low noise, and excellent line and load transient response. The device is available in various package options, including a 6-lead, 2 mm × 2 mm LFCSP, a 5-lead TSOT, and an 8-lead SOIC, making it suitable for compact and low-profile applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Input Voltage Range | 2.7 to 40 | V |
| Maximum Output Current | 200 | mA |
| Output Voltage Options | 1.2 V, 1.5 V, 1.8 V, 2.0 V, 2.2 V, 2.5 V, 2.75 V, 2.8 V, 2.85 V, 3.0 V, 3.3 V, 3.8 V, 4.2 V, 4.6 V, 5.0 V (fixed and adjustable) | V |
| Output Noise (rms) | 11 μV | V |
| PSRR at 10 kHz | 88 dB | dB |
| PSRR at 100 kHz | 68 dB | dB |
| PSRR at 1 MHz | 50 dB | dB |
| Initial Accuracy | ±0.8% | % |
| Package Options | 6-lead LFCSP, 5-lead TSOT, 8-lead SOIC |
Key Features
- Low noise operation with 11 μV rms output noise independent of the fixed output voltage.
- High power supply rejection ratio (PSRR) of 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- Wide input voltage range from 2.7 V to 40 V.
- Maximum output current of up to 200 mA.
- High initial accuracy of ±0.8% and excellent line, load, and temperature accuracy.
- User-programmable soft start with an external capacitor available in LFCSP and SOIC packages.
- Compact package options including 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC.
Applications
- Communications and infrastructure.
- Medical and healthcare devices.
- Industrial and instrumentation applications.
- Automotive systems.
- High-performance analog and mixed-signal circuits.
Q & A
- What is the input voltage range of the ADP7142?
The input voltage range of the ADP7142 is from 2.7 V to 40 V.
- What is the maximum output current of the ADP7142?
The maximum output current of the ADP7142 is up to 200 mA).
- What are the available output voltage options for the ADP7142?
The ADP7142 is available in 15 fixed output voltage options ranging from 1.2 V to 5.0 V, with additional voltages available by special order).
- What is the output noise of the ADP7142?
The output noise of the ADP7142 is 11 μV rms independent of the fixed output voltage).
- What are the package options for the ADP7142?
The ADP7142 is available in 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC packages).
- Can the output voltage of the ADP7142 be adjusted?
Yes, each fixed output voltage can be adjusted above the initial set point using an external feedback divider).
- What is the PSRR of the ADP7142 at different frequencies?
The PSRR of the ADP7142 is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz).
- Is user-programmable soft start available for the ADP7142?
Yes, user-programmable soft start with an external capacitor is available in LFCSP and SOIC packages).
- What are some typical applications of the ADP7142?
The ADP7142 is typically used in communications and infrastructure, medical and healthcare devices, industrial and instrumentation applications, and automotive systems).
- How does the ADP7142 achieve high PSRR and low noise?
The ADP7142 achieves high PSRR and low noise through its advanced proprietary architecture and the use of a small 2.2 µF ceramic output capacitor).
