Overview
The ADP7118ARDZ-1.8 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This high-performance 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 regulate high-performance analog and mixed-signal circuits, offering excellent line and load transient response with a small 2.2 µF ceramic output capacitor. The device is ideal for applications requiring low noise and high power supply rejection ratio (PSRR).
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Input Voltage Range | 2.7 V to 20 V |
| Maximum Output Current | 200 mA |
| Output Voltage | 1.8 V (fixed), adjustable with external feedback divider |
| Dropout Voltage (typical) | 200 mV at 200 mA load, VOUT = 5 V |
| PSRR | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz, VOUT ≤ 5 V, VIN = 7 V |
| RMS Noise (typical) | 11 µV |
| Initial Accuracy | ±0.8% |
| Operating Temperature Range | -40°C to +125°C |
| Quiescent Current (typical) | 50 µA with no load |
| Package Options | 6-lead LFCSP, 5-lead TSOT, 8-lead SOIC |
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
- User programmable soft start (available in LFCSP and SOIC packages)
- Low quiescent current: 50 µA (typical) with no load
- Low dropout voltage: 200 mV (typical) at a 200 mA load
- Adjustable output voltage using an external feedback divider
- Supported by ADIsimPower tool
Applications
- Noise-sensitive applications
- ADC and DAC circuits, precision amplifiers, power for VCO VTUNE control
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
Q & A
- Q: What is the input voltage range of the ADP7118ARDZ-1.8?
A: The input voltage range is from 2.7 V to 20 V.
- Q: What is the maximum output current of the ADP7118ARDZ-1.8?
A: The maximum output current is 200 mA.
- Q: What is the typical dropout voltage of the ADP7118ARDZ-1.8?
A: The typical dropout voltage is 200 mV at a 200 mA load, VOUT = 5 V.
- Q: What are the available package options for the ADP7118ARDZ-1.8?
A: The available package options are 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC.
- Q: What is the operating temperature range of the ADP7118ARDZ-1.8?
A: The operating temperature range is -40°C to +125°C.
- Q: How does the ADP7118ARDZ-1.8 achieve low noise?
A: The ADP7118ARDZ-1.8 achieves low noise with an output noise of 11 µV rms independent of the fixed output voltage.
- Q: Can the output voltage of the ADP7118ARDZ-1.8 be adjusted?
A: Yes, the output voltage can be adjusted using an external feedback divider.
- Q: What is the quiescent current of the ADP7118ARDZ-1.8?
A: The typical quiescent current is 50 µA with no load.
- Q: Is the ADP7118ARDZ-1.8 RoHS compliant?
A: Yes, the ADP7118ARDZ-1.8 is RoHS compliant.[
- Q: What tool supports the ADP7118ARDZ-1.8 for design and simulation?
A: The ADP7118ARDZ-1.8 is supported by the ADIsimPower tool.[
- Q: What are some typical applications of the ADP7118ARDZ-1.8?
A: Typical applications include noise-sensitive circuits, ADC and DAC circuits, precision amplifiers, communications and infrastructure, medical and healthcare, and industrial and instrumentation.[
