Overview
The ADM660AN, produced by Analog Devices Inc., is a CMOS switched-capacitor voltage converter designed to provide efficient voltage inversion and doubling capabilities. This device is part of the ADM660 series and is known for its low power consumption and high efficiency. It is particularly useful in systems requiring a negative voltage rail from a single positive supply voltage.
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 |
| Charge-Pump Frequency | 25 | - | 120 | kHz | FC = Open (ADM660), GND (ADM8660) |
| Quiescent Current | - | - | 600 | μA | - |
| Package Options | - | - | - | - | 8-lead DIP, narrow-body SOIC, 16-lead TSSOP |
Key Features
- Low power CMOS design with a quiescent current of 600 μA
- Selectable charge-pump frequency of 25 kHz or 120 kHz
- Ability to invert the input supply voltage or double it (inverting mode only for ADM660)
- High efficiency, achieving greater than 90% efficiency at 50 mA output current and greater than 80% at 100 mA
- Pin compatible upgrade for MAX660, MAX665, ICL7660, and LTC1046
- Low voltage operation input (LV) for optimizing performance at different input voltages
Applications
- Handheld instruments
- Portable computers
- Remote data acquisition
- Op Amp power supplies
Q & A
- What is the primary function of the ADM660AN?
The primary function of the ADM660AN is to invert or double the input supply voltage using a charge-pump mechanism. - What are the input voltage ranges for the ADM660AN?
The input voltage range is from +1.5 V to +7 V. - What is the maximum output current of the ADM660AN?
The maximum output current is 100 mA. - What are the package options available for the ADM660AN?
The device is available in 8-lead DIP, narrow-body SOIC, and 16-lead TSSOP packages. - How does the charge-pump frequency affect the device's operation?
The charge-pump frequency can be set to either 25 kHz or 120 kHz, which affects the efficiency and performance of the device. - What is the quiescent current of the ADM660AN?
The quiescent current is 600 μA. - Is the ADM660AN pin compatible with other devices?
Yes, it is pin compatible with MAX660, MAX665, ICL7660, and LTC1046. - What are some typical applications of the ADM660AN?
Typical applications include handheld instruments, portable computers, remote data acquisition, and Op Amp power supplies. - How efficient is the ADM660AN at different output currents?
The device achieves greater than 90% efficiency at 50 mA output current and greater than 80% at 100 mA. - What is the purpose of the LV input pin?
The LV input pin is used for low voltage operation, optimizing performance when the input voltage is less than 3.5 V.
