Overview
The ADM660ANZ, produced by Analog Devices Inc., is a CMOS switched-capacitor voltage converter designed for efficient voltage inversion and doubling in various electronic systems. This device is part of the ADM660 series and is known for its low power consumption and high efficiency. It is particularly useful in single power supply systems where a negative voltage rail is required.
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, LV = Open |
| Output Current | - | - | 100 | mA | - |
| Output Resistance | 9 | - | 15 | Ω | IL = 100 mA |
| Charge-Pump Frequency | 25 kHz | - | 120 kHz | - | FC = Open (ADM660), GND (ADM8660) |
| Quiescent Current (Shutdown) | - | - | 300 nA | - | ADM8660, SD = High |
| Package Options | - | - | - | - | 8-Lead DIP, Narrow-Body SOIC, 16-Lead TSSOP (ADM660 only) |
Key Features
- Inverting Mode: Converts positive input voltage to negative output voltage (VOUT = –VIN).
- Doubling Mode (ADM660 only): Doubles the input voltage (VOUT = 2 * VIN).
- Low Power Consumption: Quiescent current of 600 μA (typical) in normal operation and 300 nA in shutdown mode (ADM8660).
- High Efficiency: Achieves greater than 90% efficiency for output currents up to 50 mA and greater than 80% efficiency for 100 mA.
- Selectable Charge-Pump Frequency: 25 kHz or 120 kHz.
- Pin Compatible Upgrade: For MAX660, MAX665, ICL7660, and LTC1046.
- Shutdown Function (ADM8660): Reduces power consumption when not in use.
Applications
- Handheld Instruments
- Portable Computers
- Remote Data Acquisition
- Op Amp Power Supplies
Q & A
- What is the primary function of the ADM660ANZ? The primary function is to invert or double the input voltage using a charge-pump mechanism.
- What are the input voltage ranges for the ADM660ANZ? The input voltage ranges from +1.5 V to +7 V.
- What is the maximum output current of the ADM660ANZ? The maximum output current is 100 mA.
- What are the package options available for the ADM660ANZ? The device is available in 8-Lead DIP, narrow-body SOIC, and 16-Lead TSSOP (for ADM660 only).
- Does the ADM660ANZ have a shutdown feature? No, the shutdown feature is available in the ADM8660 model, not the ADM660ANZ.
- What is the quiescent current of the ADM660ANZ in normal operation? The quiescent current is typically 600 μA.
- What are the charge-pump frequencies available for the ADM660ANZ? The charge-pump frequencies are 25 kHz and 120 kHz.
- Is the ADM660ANZ pin compatible with other devices? Yes, it is pin compatible with MAX660, MAX665, ICL7660, and LTC1046.
- What is the efficiency of the ADM660ANZ at 100 mA output current? The efficiency is greater than 80% at 100 mA output current.
- How many external capacitors are required for the charge pump operation? Only two small external capacitors are needed.
