Overview
The ADP7118AUJZ-R7 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 for the regulation of high-performance analog and mixed-signal circuits, offering excellent line and load transient response and low noise characteristics.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 2.7 V to 20 V |
| Maximum Output Current | 200 mA |
| Output Voltage Options | 16 fixed options (1.2 V to 5.0 V), adjustable up to 19.58 V |
| Output Noise (rms) | 11 µV (for fixed output voltages ≤ 5 V) |
| Power Supply Rejection Ratio (PSRR) | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz |
| Initial Accuracy | ±0.8% |
| Soft Start Time | Approximately 380 µs (typical without external capacitor) |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage
- High power supply rejection ratio (PSRR): 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- Excellent line and load transient response with a small 2.2 µF ceramic output capacitor
- Internal soft start to limit inrush current
- Current-limit and thermal overload protection
- Programmable precision enable and noise reduction capabilities
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- Power for VCO VTUNE control in precision amplifiers
Q & A
- What is the input voltage range of the ADP7118AUJZ-R7?
The input voltage range is from 2.7 V to 20 V.
- What is the maximum output current of the ADP7118AUJZ-R7?
The maximum output current is 200 mA.
- What are the available output voltage options for the ADP7118AUJZ-R7?
The device offers 16 fixed output voltage options ranging from 1.2 V to 5.0 V, and it is also adjustable up to 19.58 V.
- What is the output noise of the ADP7118AUJZ-R7?
The output noise is 11 µV rms for fixed output voltages ≤ 5 V.
- What is the power supply rejection ratio (PSRR) of the ADP7118AUJZ-R7?
The PSRR is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- Does the ADP7118AUJZ-R7 have internal protection features?
Yes, it includes current-limit and thermal overload protection.
- How does the soft start feature work in the ADP7118AUJZ-R7?
The device uses an internal soft start to limit inrush current, with a typical start-up time of approximately 380 µs without an external capacitor.
- What are some common applications of the ADP7118AUJZ-R7?
Common applications include communications and infrastructure, medical and healthcare devices, industrial and instrumentation systems, and power for VCO VTUNE control in precision amplifiers.
- Is the ADP7118AUJZ-R7 supported by any design tools?
Yes, it is supported by the ADIsimPower design tool.
- How can the output voltage be adjusted beyond the fixed options?
The output voltage can be adjusted using an external voltage divider.
