Overview
The LM2903QDR, manufactured by Texas Instruments, is a dual differential comparator designed for a wide range of applications. This component is part of the LM2903 series, known for its high reliability and performance in both industrial and automotive environments. The LM2903QDR is particularly suited for applications requiring precise voltage comparisons, offering a robust solution with low power consumption and wide operating voltage range. Its market positioning targets industries such as automotive electronics, industrial automation, and consumer electronics, where accuracy and durability are paramount.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Bias Current | 25 | nA | Typical |
| Input Offset Voltage | 2 | mV | Typical |
| Supply Voltage | 2 to 36 | V | Single/Dual |
| Operating Temperature | -40 to +125 | °C | |
| Output Current | 20 | mA | |
| Package | SOIC-8 |
Key Features
- Wide supply voltage range from 2V to 36V (single supply) or ±1V to ±18V (dual supply).
- Low supply current independent of supply voltage: 0.4mA per comparator (typical).
- Low input bias current: 25nA (typical).
- Low input offset voltage: 2mV (typical).
- Common-mode input voltage range includes ground.
- Output compatible with TTL, MOS, and CMOS logic.
Applications
The LM2903QDR is extensively used in various sectors due to its robust performance and reliability. In automotive electronics, it is utilized in HEV/EV and powertrain systems, infotainment, and body control modules. Industrial applications include power monitoring, oscillators, and peak detectors. Additionally, it serves well in logic voltage conversion tasks, making it a versatile choice for engineers designing in these fields.
Q & A
What is the operating temperature range of the LM2903QDR?
The LM2903QDR operates effectively within a temperature range of -40°C to +125°C.
Can the LM2903QDR be used with both single and dual power supplies?
Yes, it is compatible with both single (2V to 36V) and dual (±1V to ±18V) power supplies.
What is the typical input bias current for the LM2903QDR?
The typical input bias current is 25nA.
What are the key features of the LM2903QDR?
Key features include a wide supply voltage range, low supply current, low input bias current, and compatibility with TTL, MOS, and CMOS logic.
In what package is the LM2903QDR available?
It is available in an SOIC-8 package.
What is the maximum supply voltage for the LM2903QDR?
The maximum supply voltage is 36V for single supply and ±18V for dual supply.
What is the typical input offset voltage?
The typical input offset voltage is 2mV.
What are the typical applications of the LM2903QDR?
Typical applications include automotive electronics, industrial automation, and consumer electronics.
Is the LM2903QDR suitable for automotive applications?
Yes, it is suitable for automotive applications, including HEV/EV and powertrain systems.
What is the output current capability of the LM2903QDR?
The output current capability is 20mA.
