Overview
The ADP7118ACPZN1.8-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This device is designed to operate from a wide input voltage range of 2.7 V to 20 V and provides up to 200 mA of output current. It is particularly suited for regulating high-performance analog and mixed-signal circuits, offering high power supply rejection, low noise, and excellent line and load transient response. The ADP7118 is available in various fixed output voltage options, with the ADP7118ACPZN1.8-R7 specifically providing a fixed output voltage of 1.8 V.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 20 V |
| Output Voltage | 1.8 V (fixed) |
| Maximum Output Current | 200 mA |
| Dropout Voltage | 200 mV |
| Quiescent Current | 50 µA |
| Operating Temperature Range | -40°C to +125°C |
| 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) |
| Output Noise | 11 µV rms (independent of fixed output voltage) |
| Package Type | 6-lead LFCSP (Lead Frame Chip Scale Package) |
Key Features
- Low Noise: 11 µV rms independent of the fixed output voltage, making it suitable for high-performance analog circuits.
- High PSRR: Power supply rejection ratio of 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- Adjustable Output Voltage: Although the ADP7118ACPZN1.8-R7 has a fixed output voltage of 1.8 V, any fixed output voltage can be adjusted to a higher voltage using an external feedback divider.
- Soft Start Capability: User-programmable soft start with an external capacitor to limit inrush current during startup.
- Compact Package: Available in a 6-lead, 2 mm × 2 mm LFCSP, providing excellent thermal performance and a small footprint.
Applications
- Communications and Infrastructure: Suitable for power management in communication systems and infrastructure equipment.
- Medical and Healthcare: Used in medical devices requiring low noise and high PSRR.
- Industrial and Instrumentation: Ideal for industrial control systems and precision instrumentation.
- Analog and Mixed-Signal Circuits: Regulates high-performance analog and mixed-signal circuits operating from various voltage rails.
Q & A
- What is the input voltage range of the ADP7118ACPZN1.8-R7?
The input voltage range is from 2.7 V to 20 V.
- What is the maximum output current of the ADP7118ACPZN1.8-R7?
The maximum output current is 200 mA.
- What is the dropout voltage of the ADP7118ACPZN1.8-R7?
The dropout voltage is 200 mV.
- How much quiescent current does the ADP7118ACPZN1.8-R7 consume?
The quiescent current is 50 µA.
- What is the operating temperature range of the ADP7118ACPZN1.8-R7?
The operating temperature range is from -40°C to +125°C.
- Can the output voltage of the ADP7118ACPZN1.8-R7 be adjusted?
Yes, the fixed output voltage can be adjusted to a higher voltage using an external feedback divider.
- What is the power supply rejection ratio (PSRR) of the ADP7118ACPZN1.8-R7?
The PSRR is 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 output noise of the ADP7118ACPZN1.8-R7?
The output noise is 11 µV rms independent of the fixed output voltage.
- In what package is the ADP7118ACPZN1.8-R7 available?
The device is available in a 6-lead LFCSP (Lead Frame Chip Scale Package).
- Does the ADP7118ACPZN1.8-R7 have a soft start feature?
Yes, it has a user-programmable soft start capability with an external capacitor.
