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ADP7142ARDZ-1.8
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Product Detailed Parameters
- Description：IC REG LIN 1.8V 200MA 8-SOIC-EP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.42V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：140 µA
- Current - Supply (Max)：320 µA
- PSRR：88dB ~ 50dB (10kHz ~ 1MHz)
- Control Features：Enable, Soft Start
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOIC-EP
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Overview
The ADP7142ARDZ-1.8 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc. It operates from an input voltage range of 2.7 V to 40 V and provides up to 200 mA of output current. The device features a fixed 1.8 V output with an initial accuracy of ±0.8%. It delivers ultralow output noise of 11 µV rms and high power supply rejection ratios, reaching 88 dB at 10 kHz. The regulator maintains stability with small 2.2 µF ceramic capacitors and includes user-programmable soft start capabilities in the SOIC package.
Feature Summary
- Ultralow output noise performance independent of fixed output voltage options
- High power supply rejection ratio across multiple frequency bands
- User-programmable precision enable thresholds with hysteresis
- Stability ensured with minimal external ceramic capacitance
Applications
- Regulation for noise-sensitive analog and mixed-signal circuits
- Powering ADC and DAC circuits
- Precision amplifier applications
- Medical and healthcare equipment
- Automotive systems
Procurement Notes
Verify the specific suffix 'ARDZ' indicates the SOIC-8 package variant when sourcing. Confirm that the component meets AEC-Q100 automotive qualification requirements if intended for vehicle integration. Ensure the ordering code matches the exact 1.8 V fixed output specification required for the design.
Selection Notes
Select this component for designs requiring high input voltages up to 40 V with low quiescent current consumption. The SOIC package supports external soft-start capacitor programming to control inrush current. Verify that the PCB layout accommodates the thermal dissipation needs for maximum load currents within the specified temperature range.
Part Context
This part belongs to the ADP7142 family of high-voltage, low-noise LDO regulators. The series offers various fixed output voltages and package options including LFCSP, TSOT, and SOIC. It is designed for portable and industrial applications demanding clean power rails from higher voltage sources.
Replacement Considerations
ADP7142ACPZN-R7
FAQ
Can the fixed 1.8 V output be adjusted?
Yes, the fixed output voltage can be increased above the initial set point using an external feedback resistor divider.
What is the minimum recommended output capacitance?
A minimum of 2.2 µF ceramic capacitor is recommended to ensure stability and optimal transient response.
