Overview
The ADP7142ACPZN3.3-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 excellent power supply rejection ratio (PSRR), low noise, and a small footprint. The device is available in various package options, including a 6-lead LFCSP, a 5-lead TSOT, and an 8-lead SOIC, making it suitable for a wide range of applications requiring compact and reliable voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 40 | V |
| Output Voltage Options | 1.2 V to 5.0 V (fixed), adjustable with external feedback divider | V |
| Maximum Output Current | 200 | mA |
| Output Noise (rms) | 11 μV (for fixed output voltages ≤ 5 V) | μV |
| PSRR at 10 kHz, 100 kHz, 1 MHz | 88 dB, 68 dB, 50 dB (VOUT ≤ 5 V, VIN = 7 V) | dB |
| Initial Accuracy | ±0.8% | % |
| Package Options | 6-lead LFCSP, 5-lead TSOT, 8-lead SOIC | |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Low noise: 11 μV rms independent of fixed output voltage
- High PSRR: 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- Wide input voltage range: 2.7 V to 40 V
- Maximum output current: 200 mA
- High initial accuracy: ±0.8%
- User-programmable soft start with an external capacitor
- Compact package options: 6-lead LFCSP, 5-lead TSOT, 8-lead SOIC
- Adjustable output voltage using an external feedback divider
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- Automotive systems
- High-performance analog and mixed-signal circuits
- VCO VTUNE control and precision amplifiers
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 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, and the output voltage can be adjusted higher using an external feedback divider.
- What is the noise level of the ADP7142?
The output noise of the ADP7142 is 11 μV rms for fixed output voltages ≤ 5 V.
- What are the package options for the ADP7142?
The ADP7142 is available in a 6-lead LFCSP, a 5-lead TSOT, and an 8-lead SOIC.
- What is the operating temperature range of the ADP7142?
The operating temperature range of the ADP7142 is -40°C to +125°C.
- Can the output voltage of the ADP7142 be adjusted?
Yes, the output voltage of the ADP7142 can be adjusted higher than the fixed options 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 for VOUT ≤ 5 V and VIN = 7 V.
- Is the ADP7142 suitable for high-performance analog circuits?
Yes, the ADP7142 is designed for high-performance analog and mixed-signal circuits due to its high PSRR, low noise, and excellent line and load transient response.
- Does the ADP7142 support user-programmable soft start?
Yes, the ADP7142 supports user-programmable soft start with an external capacitor in the LFCSP and SOIC packages.
