Overview
The ADP7142AUJZ-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This regulator operates over a wide 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 high power supply rejection, low noise, and excellent line and load transient response. The ADP7142 is available in various fixed output voltage options, ranging from 1.2 V to 5.0 V, and can also be adjusted to higher voltages using an external voltage divider.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 40 V |
| Maximum Output Current | 200 mA |
| Output Voltage Options | 15 fixed options (1.2 V to 5.0 V) |
| Output Noise | 11 µV rms (for fixed output voltages ≤ 5 V) |
| 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) |
| Initial Accuracy | ±0.8% |
| Dropout Voltage | Varies with load current (see datasheet for details) |
| Package Type | TSOT-23-5 |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage
- High power supply rejection ratio (PSRR): up to 88 dB at 10 kHz
- Wide input voltage range: 2.7 V to 40 V
- High accuracy: ±0.8% initial accuracy and precision over line, load, and temperature
- Adjustable output voltage using an external voltage divider
- Small 2.2 µF ceramic output capacitor for excellent line and load transient response
Applications
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
- Automotive
- High-performance analog and mixed-signal circuits
Q & A
- What is the input voltage range of the ADP7142AUJZ-R7?
The input voltage range is from 2.7 V to 40 V. - What is the maximum output current of the ADP7142AUJZ-R7?
The maximum output current is up to 200 mA. - What are the available output voltage options for the ADP7142AUJZ-R7?
The ADP7142 is available in 15 fixed output voltage options ranging from 1.2 V to 5.0 V. - How can the output voltage be adjusted?
The output voltage can be adjusted to higher voltages using an external voltage divider. - What is the noise level of the ADP7142AUJZ-R7?
The output noise is 11 µV rms for fixed output voltages ≤ 5 V. - What is the power supply rejection ratio (PSRR) of the ADP7142AUJZ-R7?
The PSRR is up to 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V). - What is the initial accuracy of the ADP7142AUJZ-R7?
The initial accuracy is ±0.8%. - What type of package does the ADP7142AUJZ-R7 come in?
The ADP7142AUJZ-R7 comes in a TSOT-23-5 package. - What are some typical applications of the ADP7142AUJZ-R7?
Typical applications include communications and infrastructure, medical and healthcare, industrial and instrumentation, and automotive. - How does the ADP7142AUJZ-R7 achieve high power supply rejection and low noise?
The ADP7142 uses an advanced proprietary architecture and a small 2.2 µF ceramic output capacitor to achieve high power supply rejection and low noise.
