Overview
The LM293ADR, produced by Texas Instruments, is a dual differential comparator integrated circuit. It is part of the LM293 and LM393 family, known for their wide range of supply voltage and robust performance. The LM293ADR is specifically designed to operate from a single power supply over a wide range of voltages, making it versatile for various applications. This device consists of two independent voltage comparators, each capable of operating independently.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | 2 | 36 | V | ||
| Input Offset Voltage | VS = 5 to 36V, TA = 25°C | -2.5 | ±0.37 | 2.5 | mV |
| Input Bias Current | TA = 25°C | -3.5 | -25 | nA | |
| Input Offset Current | TA = 25°C | -10 | ±0.5 | 10 | nA |
| Common Mode Range | VS = 3 to 36V | (V-) - 1.5 | (V+) - 2.5 | V | |
| Response Time | RL connected to 5V through 5.1kΩ, CL = 15pF | 1.3 | µs | ||
| Operating Temperature Range | -25 | 85 | °C | ||
| ESD Rating (HBM) | 2kV |
Key Features
- Wide range of supply voltage: 2 V to 36 V.
- Low input offset voltage: ±0.37 mV.
- Low input bias current: -25 nA.
- Low supply current: 200 µA per comparator.
- Faster response time: 1 µsec.
- Extended temperature range: -25°C to 85°C for LM293ADR.
- Common-mode input voltage range includes ground.
- Differential input voltage range equal to maximum-rated supply voltage: ±38 V.
- Low output saturation voltage.
- Output compatible with TTL, MOS, and CMOS.
Applications
The LM293ADR is suitable for a variety of applications due to its robust and versatile design. Some common applications include:
- Threshold detection and limit sensing in industrial control systems.
- Zero-crossing detectors in power supplies and motor control circuits.
- Line receivers and level detectors in communication systems.
- Analog-to-digital converters and other mixed-signal circuits.
Q & A
- What is the supply voltage range of the LM293ADR?
The supply voltage range of the LM293ADR is from 2 V to 36 V. - What is the typical input offset voltage of the LM293ADR?
The typical input offset voltage is ±0.37 mV. - What is the input bias current of the LM293ADR?
The input bias current is typically -25 nA. - What is the response time of the LM293ADR?
The response time is typically 1.3 µs. - What is the operating temperature range of the LM293ADR?
The operating temperature range is from -25°C to 85°C. - Is the LM293ADR ESD protected?
Yes, the LM293ADR has an ESD rating of 2 kV (HBM). - Can the outputs of the LM293ADR be connected to other open-collector outputs?
Yes, the outputs can be connected to achieve wired-AND relationships. - What is the common-mode input voltage range of the LM293ADR?
The common-mode input voltage range includes ground and extends up to VCC - 2V. - Is the LM293ADR compatible with TTL, MOS, and CMOS outputs?
Yes, the output is compatible with TTL, MOS, and CMOS. - Can the LM293ADR replace older versions of the LM293 and LM393?
Yes, the B-version of the LM293ADR is a drop-in replacement for older versions of the LM293 and LM393).
