Overview
The LM2903DGKR is a next-generation voltage comparator from Texas Instruments, part of the LM2903B family. This device is an enhanced version of the industry-standard LM2903 comparator, offering improved specifications and performance. The LM2903DGKR features two independent voltage comparators designed to operate from a single power supply over a wide range of voltages. It is characterized by lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, and faster response times compared to its predecessors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 2 to 36 | V |
| Maximum Supply Voltage | Up to 38 | V |
| Input Offset Voltage (Max over temp) | ± 0.37 mV (typ), ± 4 mV (max) | mV |
| Input Bias Current (typ / max) | 3.5 nA / 25 nA | nA |
| Supply Current per Comparator | 200 µA | µA |
| Response Time (typ) | 1 µsec | µsec |
| Operating Temperature Range | -40 to 125 | °C |
| ESD Rating (HBM) | 2 kV | V |
| Package Type | VSSOP (DGK) - 8 pins | |
| Package Size | 3.00 mm x 3.00 mm | mm |
Key Features
- Improved specifications of B-version, including lower offset voltage and higher supply voltage capability.
- Low input offset voltage: 0.37 mV (typ).
- Low input bias current: 3.5 nA (typ).
- Low supply current: 200 µA per comparator.
- Faster response time: 1 µsec (typ).
- Extended temperature range: -40 to 125°C.
- High ESD rating (HBM): 2 kV.
- Available in tiny 2 x 2mm WSON package.
- B-version is a drop-in replacement for LM293, LM393, and LM2903 (A and V versions).
- 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
- Vacuum robots
- Single-phase UPS
- Server power supplies
- Cordless power tools
- Wireless infrastructure
- Appliances
- Building automation
- Factory automation and control
- Motor drives
- Infotainment and cluster systems
Q & A
- What is the maximum supply voltage for the LM2903DGKR?
The maximum supply voltage for the LM2903DGKR is up to 38 V.
- What is the typical input offset voltage of the LM2903DGKR?
The typical input offset voltage is 0.37 mV.
- What is the typical input bias current of the LM2903DGKR?
The typical input bias current is 3.5 nA.
- What is the response time of the LM2903DGKR?
The response time is typically 1 µsec.
- What is the operating temperature range of the LM2903DGKR?
The operating temperature range is -40 to 125°C.
- What is the ESD rating of the LM2903DGKR?
The ESD rating is 2 kV (HBM).
- In what package types is the LM2903DGKR available?
The LM2903DGKR is available in VSSOP (DGK) - 8 pins, among other packages.
- Is the LM2903DGKR compatible with other comparator versions?
Yes, the B-version is a drop-in replacement for LM293, LM393, and LM2903 (A and V versions).
- What are some common applications of the LM2903DGKR?
Common applications include vacuum robots, single-phase UPS, server power supplies, cordless power tools, and more.
- Is the output of the LM2903DGKR compatible with other logic families?
Yes, the output is compatible with TTL, MOS, and CMOS.
