Overview
The LP2901DR is a low-power quadruple differential comparator produced by Texas Instruments. This device is part of the LP2901 series, which includes the LP239 and LP339, but the LP2901DR is specifically characterized for operation from −40°C to 85°C. Each device in the series consists of four independent voltage comparators designed to operate from a single power supply, drawing a typical drain current of 60 µA over a wide range of voltages. The LP2901DR is pin-for-pin compatible with the LM239, LM339, and LM2901, making it a versatile component for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 30 | V | |
| Supply Current (ICC) | 60 | 100 | µA | |
| Input Biasing Current | 3 | nA | ||
| Input Offset Current | ±0.5 | nA | ||
| Input Offset Voltage | ±2 | mV | ||
| Common-Mode Input Voltage | 0 | 28 | V | |
| Output Sink Current (VO = 2V) | 30 | mA | ||
| Operating Free-Air Temperature Range | −40 | 85 | °C | |
| Package Thermal Impedance (θJA) | 86 | °C/W |
Key Features
- Wide supply-voltage range: 3 V to 30 V
- Ultralow power supply current: 60 µA typical
- 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 = 2V
- Power supply input reverse-voltage protected
- Single-power-supply operation with the ability to operate from split power supplies
- Bimodal output section for different current modes
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 typical supply current of the LP2901DR?
The typical supply current of the LP2901DR is 60 µA.
- What is the operating temperature range of the LP2901DR?
The operating temperature range of the LP2901DR is from −40°C to 85°C.
- What is the common-mode input voltage range for the LP2901DR?
The common-mode input voltage range for the LP2901DR is from 0 V to 28 V when VCC = 30 V.
- Can the LP2901DR operate from a single power supply?
Yes, the LP2901DR can operate from a single power supply and also from split power supplies.
- What is the output sink current capability of the LP2901DR?
The LP2901DR can sink up to 30 mA at VO = 2V in Darlington mode and up to 700 µA at VO = 0.4V in ground-emitter mode.
- Is the LP2901DR compatible with CMOS logic?
Yes, the output voltage of the LP2901DR is compatible with MOS and CMOS logic.
- What is the package type and pin count of the LP2901DR?
The LP2901DR comes in a SOIC (D) package with 14 pins.
- What are some typical applications of the LP2901DR?
Typical applications include limit comparators, simple analog-to-digital converters, pulse generators, and battery-powered devices.
- Does the LP2901DR have reverse-voltage protection on the power supply input?
Yes, the LP2901DR has power supply input reverse-voltage protection.
- Can multiple outputs of the LP2901DR be tied together?
Yes, several outputs can be tied together to provide a dot logic function.
