Overview
The ADP7118ARDZ 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 20 V and provides up to 200 mA of output current. It is designed to offer excellent noise performance, high power supply rejection ratio (PSRR), and low noise, making it ideal for regulating high-performance analog and mixed-signal circuits. The ADP7118 is available in various package options, including 6-lead LFCSP, 8-lead SOIC, and 5-lead TSOT, ensuring a compact and thermally efficient solution for a wide range of applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 20 V |
| Maximum Output Current | 200 mA |
| Output Voltage Options | Fixed: 1.2 V, 1.8 V, 2.5 V, 3.3 V, 4.5 V, 5.0 V; Adjustable above initial set point |
| Initial Accuracy | ±0.8% |
| PSRR | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz |
| Output Noise | 11 µV rms (for fixed options ≤ 5 V) |
| Quiescent Current | 140 µA |
| Dropout Voltage | 0.42 V @ 200 mA |
| Operating Temperature | -40°C to +125°C |
| Package Options | 6-lead LFCSP, 8-lead SOIC, 5-lead TSOT |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage for options ≤ 5 V
- High PSRR: 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- High accuracy over line, load, and temperature: ±0.8% initial accuracy
- User programmable soft start with an external capacitor
- Compact package options: 6-lead LFCSP, 8-lead SOIC, 5-lead TSOT
- Protection features: Over current, over temperature protection
- AEC-Q100 qualified for automotive applications
Applications
- Noise-sensitive applications such as ADC and DAC circuits
- Precision amplifiers and power for VCO VTUNE control
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation applications
Q & A
- What is the input voltage range of the ADP7118ARDZ?
The input voltage range is from 2.7 V to 20 V.
- What is the maximum output current of the ADP7118ARDZ?
The maximum output current is 200 mA.
- What are the available output voltage options for the ADP7118ARDZ?
The regulator is available in fixed output voltage options ranging from 1.2 V to 5.0 V, and each can be adjusted above the initial set point with an external feedback divider.
- What is the PSRR of the ADP7118ARDZ?
The PSRR is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- What is the output noise of the ADP7118ARDZ?
The output noise is 11 µV rms for fixed output voltage options ≤ 5 V.
- What are the package options for the ADP7118ARDZ?
The regulator is available in 6-lead LFCSP, 8-lead SOIC, and 5-lead TSOT packages.
- Does the ADP7118ARDZ have any protection features?
Yes, it includes over current and over temperature protection features.
- Is the ADP7118ARDZ suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- How can the soft start time be adjusted on the ADP7118ARDZ?
The soft start time can be adjusted using an external capacitor connected to the SS pin.
- What are some typical applications of the ADP7118ARDZ?
Typical applications include noise-sensitive circuits, precision amplifiers, communications and infrastructure, medical and healthcare devices, and industrial and instrumentation applications.
