Overview
The LP2901DRG4, produced by Texas Instruments, is a low-power quadruple differential comparator. This device is part of the LP239, LP339, and LP2901 family, designed to operate from a single power supply with a wide voltage range of 3 V to 30 V. It is characterized for operation from −40°C to 85°C, making it suitable for various environmental conditions. The LP2901DRG4 is particularly noted for its ultra-low power-supply current, typically 60 µA, which is independent of the power-supply voltage, making it ideal for battery-powered applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 30 | V | |
| Common-Mode Input Voltage (VIC) | 0 | 28 (at VCC = 30 V) | V | |
| Input Voltage (VI) | 0 | 28 (at VCC = 30 V) | V | |
| Input Biasing Current | 3 | nA | ||
| Input Offset Current | ±0.5 | nA | ||
| Input Offset Voltage | ±2 | mV | ||
| Output Sink Current (VO = 2 V) | 30 | mA | ||
| Operating Free-Air Temperature (TA) | −40 | 85 | °C | |
| Supply Current (ICC) | 60 | 100 | µA |
Key Features
- Wide supply-voltage range: 3 V to 30 V
- Ultralow power-supply current: typically 60 µA
- Low input biasing current: 3 nA
- Low input offset current: ±0.5 nA
- Low input offset voltage: ±2 mV
- Common-mode input voltage includes ground
- Output voltage compatible with MOS and CMOS logic
- High output sink-current capability: 30 mA at VO = 2 V
- Power supply input reverse-voltage protected
- Single-power-supply operation with the ability to operate from split power supplies
- Pin-for-pin compatible with LM239, LM339, LM2901
Applications
- Limit comparators
- Simple analog-to-digital converters
- Pulse generators
- Squarewave generators
- Time-delay generators
- Voltage-controlled oscillators
- Multivibrators
- High-voltage logic gates
- Battery-powered applications due to ultra-low power consumption
Q & A
- What is the operating temperature range of the LP2901DRG4?
The LP2901DRG4 operates from −40°C to 85°C.
- What is the typical supply current of the LP2901DRG4?
The typical supply current is 60 µA.
- What is the input offset voltage of the LP2901DRG4?
The input offset voltage is ±2 mV.
- Can the LP2901DRG4 operate from a single power supply?
- What is the maximum output sink current of the LP2901DRG4 at VO = 2 V?
The maximum output sink current is 30 mA at VO = 2 V.
- Is the LP2901DRG4 compatible with CMOS logic?
- What is the common-mode input voltage range of the LP2901DRG4?
The common-mode input voltage range is from 0 V to 28 V when VCC = 30 V.
- Can the differential input voltage be larger than VCC?
- What is the purpose of transistor Q3 in the output section?
- Can multiple outputs be tied together for a dot logic function?
