Overview
The ADM8660ARZ-REEL, produced by Analog Devices Inc., is a CMOS switched-capacitor voltage converter designed for efficient voltage inversion and low power consumption. This device is part of the ADM660/ADM8660 series, which offers a reliable solution for generating negative voltage rails in single power supply systems. The ADM8660 features a low power shutdown function, making it ideal for battery-powered and portable applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Input Voltage, V+ | 1.5 | - | 7.0 | V | Inverting Mode, LV = Open |
| Supply Current (No Load) | 0.6 | 1 | - | mA | FC = Open (ADM660), GND (ADM8660) |
| Output Current | - | - | 100 | mA | - |
| Output Resistance | 9 | - | 15 | Ω | IL = 100 mA, TA = 25°C |
| Charge-Pump Frequency | 25 kHz | - | 120 kHz | - | FC = Open (ADM660), GND (ADM8660) |
| Quiescent Current (Shutdown) | - | - | 300 nA | - | SD Pin Active |
| Package | - | - | SOIC-8 | - | - |
Key Features
- Low Power Shutdown: The ADM8660 includes a shutdown pin to disable the device and reduce quiescent current to 300 nA, enhancing power efficiency in battery-powered devices.
- Selectable Charge Pump Frequency: The device allows for selectable charge pump frequencies of 25 kHz or 120 kHz.
- High Efficiency: Achieves output currents up to 50 mA with greater than 90% efficiency and up to 100 mA with greater than 80% efficiency.
- Compact Packaging: Available in an 8-lead SOIC package, making it suitable for space-constrained applications.
- ESD Protection: Features proprietary ESD protection circuitry to protect against electrostatic discharge.
Applications
- Handheld Instruments: Ideal for portable and battery-powered devices due to its low power consumption and shutdown feature.
- Portable Computers: Suitable for generating negative voltage rails in single power supply systems.
- Remote Data Acquisition: Used in remote sensing and data acquisition systems where power efficiency is crucial.
- Op Amp Power Supplies: Provides a reliable negative voltage supply for operational amplifiers in various applications.
Q & A
- What is the primary function of the ADM8660ARZ-REEL?
The primary function of the ADM8660ARZ-REEL is to invert the input supply voltage, providing a negative output voltage. - What are the input voltage ranges for the ADM8660ARZ-REEL?
The input voltage ranges from +1.5 V to +7 V. - What is the maximum output current of the ADM8660ARZ-REEL?
The maximum output current is 100 mA. - What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is 300 nA. - What are the available charge pump frequencies?
The charge pump frequencies are 25 kHz and 120 kHz. - What type of packaging is available for the ADM8660ARZ-REEL?
The device is available in an 8-lead SOIC package. - Does the ADM8660ARZ-REEL have ESD protection?
Yes, the device features proprietary ESD protection circuitry. - What are some typical applications of the ADM8660ARZ-REEL?
Typical applications include handheld instruments, portable computers, remote data acquisition, and op amp power supplies. - How efficient is the ADM8660ARZ-REEL in terms of output current?
The device achieves greater than 90% efficiency for output currents up to 50 mA and greater than 80% efficiency for output currents up to 100 mA. - Is the ADM8660ARZ-REEL pin compatible with other devices?
No, the ADM8660 does not have a doubling mode and lacks an external oscillator pin, making it different from some other models like the ADM660.
