Overview
The LM339AD, produced by STMicroelectronics, is part of the LM339 family of low-power quad voltage comparators. This device consists of four independent precision-voltage comparators designed to operate from a wide range of single or dual power supplies. The LM339AD is notable for its low offset voltage specification, as low as 2 mV maximum, and its ability to operate with input common-mode voltage ranges that include ground, even when powered from a single supply voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | +2 to +36 V or ±1 V to ±18 V | V |
| Supply Current | 1.1 mA (typical) | mA |
| Input Bias Current | 25 nA (typical) | nA |
| Input Offset Current | ±5 nA (typical) | nA |
| Input Offset Voltage | ±1 mV (typical) | mV |
| Input Common-Mode Voltage Range | Includes ground | |
| Output Saturation Voltage | 250 mV (typical at ISINK = 4 mA) | mV |
| Differential Input Voltage Range | Equal to the supply voltage | V |
| Operating Temperature Range | -40 to +85 °C | °C |
| Package Types | SO-14, TSSOP-14, QFN-16L |
Key Features
- Wide single supply voltage range or dual supplies: +2 to +36 V or ±1 V to ±18 V
- Very low supply current (1.1 mA) independent of supply voltage
- Low input bias current: 25 nA typical
- Low input offset current: ±5 nA typical
- Low input offset voltage: ±1 mV typical
- Input common-mode voltage range includes ground
- Low output saturation voltage: 250 mV typical (ISINK = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, MOS, CMOS compatible outputs
Applications
The LM339AD is suitable for a variety of applications, including:
- Analog-to-digital converters
- Level detection and threshold detection circuits
- Pulse generators and timing circuits
- Window comparators and alarm systems
- Automotive and industrial control systems
Q & A
- What is the supply voltage range for the LM339AD?
The LM339AD can operate from a single supply voltage of +2 to +36 V or from dual supplies of ±1 V to ±18 V.
- What is the typical supply current of the LM339AD?
The typical supply current is 1.1 mA, independent of the supply voltage.
- What is the input bias current of the LM339AD?
The input bias current is typically 25 nA.
- Can the LM339AD operate with input common-mode voltage including ground?
- What is the output saturation voltage of the LM339AD?
The output saturation voltage is typically 250 mV at an output current of 4 mA.
- Is the LM339AD compatible with various logic families?
- What are the package options available for the LM339AD?
The LM339AD is available in SO-14, TSSOP-14, and QFN-16L packages.
- What is the operating temperature range of the LM339AD?
The operating temperature range is -40 to +85 °C.
- What are some typical applications of the LM339AD?
The LM339AD is used in analog-to-digital converters, level detection circuits, pulse generators, window comparators, and various industrial and automotive control systems.
- Is the LM339AD RoHS compliant?
