Overview
The TLC2272CDR is a dual low-noise rail-to-rail operational amplifier from Texas Instruments. It is part of the TLC227x family, which is known for its high input impedance, low noise, and rail-to-rail output performance. These devices are designed for increased dynamic range in both single-supply and split-supply applications, making them suitable for a wide range of precision and high-speed applications.
The TLC2272CDR offers significant improvements over existing CMOS operational amplifiers, including better noise, input offset voltage, and power dissipation. It is particularly excellent for small-signal conditioning of high-impedance sources such as piezoelectric transducers and is also suitable for hand-held monitoring and remote-sensing applications due to its micropower dissipation levels.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Gain-Bandwidth Product | 2.2 MHz | |
| Slew Rate at Unity Gain | 3.6 V/µs | |
| Equivalent Input Noise Voltage at 1 kHz | 9 nV/√Hz | |
| Input Offset Voltage at TA = 25°C | 950 µV (max) | |
| Input Bias Current | 1 pA (typ) | |
| Common-Mode Input Voltage Range | -0.3 to 4 V | |
| Supply Voltage Range | ±2.2 to ±8 VDC, 4.4 to 16 VDC | |
| Operating Temperature Range | 0 to 70°C | |
| Package Type | SOIC (D), 8 pins |
Key Features
- Output Swing Includes Both Supply Rails
- Low Noise: 9 nV/√Hz Typical at f = 1 kHz
- Low-Input Bias Current: 1-pA Typical
- Fully-Specified for Both Single-Supply and Split-Supply Operation
- Common-Mode Input Voltage Range Includes Negative Rail
- High-Gain Bandwidth: 2.2-MHz Typical
- High Slew Rate: 3.6-V/µs Typical
- Low Input Offset Voltage: 950 µV Maximum at TA = 25°C
- Macromodel Included
- Performance Upgrades for the TLC272 and TLC274
- Available in Q-Temp Automotive Grades
Applications
- Hand-held Monitoring Systems
- Remote-Sensing Applications
- Transducer Interfaces (e.g., piezoelectric transducers)
- Battery-Powered Applications
- White Goods (Refrigerators, Washing Machines)
- Analog-to-Digital Converter (ADC) Interfaces
Q & A
- What is the typical gain-bandwidth product of the TLC2272CDR?
The typical gain-bandwidth product is 2.2 MHz.
- What is the slew rate at unity gain for the TLC2272CDR?
The slew rate at unity gain is typically 3.6 V/µs.
- What is the equivalent input noise voltage at 1 kHz for the TLC2272CDR?
The equivalent input noise voltage at 1 kHz is typically 9 nV/√Hz.
- What is the maximum input offset voltage at TA = 25°C for the TLC2272CDR?
The maximum input offset voltage at TA = 25°C is 950 µV.
- What is the typical input bias current for the TLC2272CDR?
The typical input bias current is 1 pA.
- What is the common-mode input voltage range for the TLC2272CDR?
The common-mode input voltage range includes negative rail and is typically from -0.3 to 4 V.
- What are the supply voltage ranges for the TLC2272CDR?
The supply voltage ranges are ±2.2 to ±8 VDC and 4.4 to 16 VDC.
- What is the operating temperature range for the TLC2272CDR?
The operating temperature range is 0 to 70°C.
- In what package type is the TLC2272CDR available?
The TLC2272CDR is available in an SOIC (D) package with 8 pins.
- What are some common applications for the TLC2272CDR?
Common applications include hand-held monitoring systems, remote-sensing applications, transducer interfaces, battery-powered applications, and white goods.
