Overview
The ADP7118ARDZ-1.8-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This regulator is designed to offer excellent noise performance, high efficiency, and a compact size, making it suitable for various applications requiring precise voltage control.
It operates from an input voltage range of 2.7 V to 20 V and provides up to 200 mA of output current. The ADP7118ARDZ-1.8-R7 is particularly noted for its low noise characteristics, with an output noise of 11 μV rms independent of the output voltage for fixed options of 5 V or less.
Key Specifications
| Parameter | Value |
|---|---|
| Brand | Analog Devices Inc. |
| Part Number | ADP7118ARDZ-1.8-R7 |
| Output Type | Fixed |
| Output Voltage | 1.8 V |
| Input Voltage Range | 2.7 V to 20 V |
| Output Current | 200 mA |
| Quiescent Current | 140 µA |
| Supply Current (Max) | 320 µA |
| Voltage Dropout (Max) | 0.42 V @ 200 mA |
| PSRR | 88 dB @ 10 kHz, 68 dB @ 100 kHz, 50 dB @ 1 MHz |
| Control Features | Enable, Soft Start |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C to 125°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
Key Features
- Low Noise: 11 μV rms output noise independent of the fixed output voltage.
- High PSRR: Power supply rejection ratio of 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- High Efficiency: Operates with high efficiency across a wide input voltage range.
- Compact Size: Available in 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC packages for compact designs.
- Soft Start Capability: User-programmable soft start with an external capacitor to limit inrush current.
- Protection Features: Includes overcurrent and overtemperature protection.
- Adjustable Output Voltage: Fixed output voltage can be adjusted above the initial set point using an external feedback divider.
Applications
- Communications and Infrastructure: Suitable for high-performance analog and mixed-signal circuits in communication systems.
- Medical and Healthcare: Used in medical devices requiring precise and stable voltage supplies.
- Industrial and Instrumentation: Ideal for industrial control systems and instrumentation where low noise and high stability are crucial.
- Power for VCO and VTUNE Control: Used in voltage-controlled oscillators and voltage-tuned circuits.
Q & A
- What is the input voltage range of the ADP7118ARDZ-1.8-R7?
The input voltage range is from 2.7 V to 20 V.
- What is the maximum output current of the ADP7118ARDZ-1.8-R7?
The maximum output current is 200 mA.
- What is the quiescent current of the ADP7118ARDZ-1.8-R7?
The quiescent current is 140 µA.
- What is the voltage dropout of the ADP7118ARDZ-1.8-R7?
The voltage dropout is 0.42 V at 200 mA.
- Does the ADP7118ARDZ-1.8-R7 have overcurrent protection?
- What is the operating temperature range of the ADP7118ARDZ-1.8-R7?
The operating temperature range is from -40°C to 125°C.
- What package options are available for the ADP7118ARDZ-1.8-R7?
- Can the output voltage of the ADP7118ARDZ-1.8-R7 be adjusted?
- Does the ADP7118ARDZ-1.8-R7 have a soft start feature?
- What is the typical start-up time for the ADP7118ARDZ-1.8-R7?
