Overview
The LM2903YST is a low-power dual voltage comparator produced by STMicroelectronics. This device consists of two independent low-power voltage comparators designed to operate from a single supply over a wide range of voltages, as well as from split power supplies. It is notable for its ability to operate with input common-mode voltage ranges that include the negative rail, even when powered from a single supply voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | +2 V to +36 V or ±1 V to ±18 V | V |
| Supply Current | 0.4 mA (at +5 V) | mA |
| Input Bias Current | 25 nA (typ.) | nA |
| Input Offset Current | ±5 nA (typ.) | nA |
| Input Common-Mode Voltage Range | Includes negative rail | |
| Output Saturation Voltage | 250 mV (typ. at IO = 4 mA) | mV |
| Differential Input Voltage Range | Equal to the supply voltage | |
| Output Compatibility | TTL, DTL, ECL, MOS, CMOS | |
| Operating Temperature Range | -40°C to 150°C (Automotive Grade) | °C |
| Package | MiniSO-8 | |
| RoHS Compliance | Ecopack3 |
Key Features
- Wide single supply voltage range or dual supplies (+2 V to +36 V or ±1 V to ±18 V)
- Very low supply current (0.4 mA) independent of supply voltage
- Low input bias current: 25 nA typ.
- Low input offset current: ±5 nA typ.
- Input common-mode voltage range includes the negative rail
- Low output saturation voltage: 250 mV typ. (IO = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, MOS, CMOS compatible outputs
- Automotive qualification
Applications
The LM2903YST is suitable for a variety of applications, including:
- Industrial control systems
- Automotive systems
- Consumer electronics, such as smartphones and tablets
- Low-frequency operational amplifier applications
- Transducer amplifiers
- Voltage-controlled oscillators (VCOs)
Q & A
- What is the supply voltage range for the LM2903YST?
The LM2903YST can operate from a single supply voltage range of +2 V to +36 V or from dual supplies ±1 V to ±18 V.
- What is the typical supply current of the LM2903YST?
The typical supply current is 0.4 mA, independent of the supply voltage.
- What is the input bias current of the LM2903YST?
The input bias current is typically 25 nA.
- Does the LM2903YST support automotive applications?
- What types of output are compatible with the LM2903YST?
The outputs are compatible with TTL, DTL, ECL, MOS, and CMOS logic.
- What is the typical output saturation voltage of the LM2903YST?
The typical output saturation voltage is 250 mV at an output current of 4 mA.
- Can the LM2903YST be used in low-frequency operational amplifier applications?
- What package options are available for the LM2903YST?
The LM2903YST is available in a MiniSO-8 package.
- Is the LM2903YST RoHS compliant?
- What are some common applications of the LM2903YST?
