Overview
The TLC2272CDG4 is a dual operational amplifier from Texas Instruments, part of the TLC227x family. These devices are known for their advanced LinCMOS technology, offering enhanced performance in noise, input offset voltage, and power dissipation compared to existing CMOS operational amplifiers. The TLC2272 and TLC2274, which include the TLC2272CDG4, exhibit rail-to-rail output performance, making them suitable for both single-supply and split-supply applications. This feature increases the dynamic range, making them ideal for a variety of applications including small-signal conditioning for high-impedance sources like piezoelectric transducers and hand-held monitoring systems.
Key Specifications
| Parameter | Typical | Maximum | Unit |
|---|---|---|---|
| Number of Channels | 2 | ||
| Gain-Bandwidth Product (GBW) | 2.18 MHz | ||
| Slew Rate | 3.6 V/μs | ||
| Input Offset Voltage (VIO) at 25°C | 950 μV | 2500 μV | |
| Input Bias Current | 1 pA | 60 pA | |
| Noise Voltage at 1 kHz | 9 nV/√Hz | ||
| Operating Temperature Range | 0 to 70°C | -40 to 125°C (for Q-Temp Automotive) | °C |
| Supply Voltage Range | 4.4 to 16 V | V | |
| Package Type | TSSOP (8-pin) |
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
Applications
- Small-signal conditioning for high-impedance sources such as piezoelectric transducers
- Hand-held monitoring and remote-sensing applications
- Interfacing with analog-to-digital converters (ADCs)
- Battery-powered equipment
- White goods (refrigerators, washing machines)
- Transducer interfaces
Q & A
- What is the typical gain-bandwidth product of the TLC2272CDG4?
The typical gain-bandwidth product is 2.18 MHz.
- What is the slew rate of the TLC2272CDG4?
The slew rate is 3.6 V/μs.
- What is the input offset voltage of the TLC2272CDG4 at 25°C?
The maximum input offset voltage is 950 μV at 25°C.
- What is the typical input bias current of the TLC2272CDG4?
The typical input bias current is 1 pA.
- What is the noise voltage of the TLC2272CDG4 at 1 kHz?
The noise voltage is 9 nV/√Hz at 1 kHz.
- What are the operating temperature ranges for the TLC2272CDG4?
The operating temperature range is 0 to 70°C, and for Q-Temp Automotive, it is -40 to 125°C.
- What is the supply voltage range for the TLC2272CDG4?
The supply voltage range is 4.4 to 16 V.
- In what package types is the TLC2272CDG4 available?
The TLC2272CDG4 is available in an 8-pin TSSOP package.
- What are some common applications of the TLC2272CDG4?
Common applications include small-signal conditioning, hand-held monitoring, remote-sensing, and interfacing with ADCs.
- Are there any performance upgrades available for the TLC2272CDG4 compared to older models?
Yes, the TLC2272CDG4 offers performance upgrades over the TLC272 and TLC274, including increased output dynamic range, lower noise voltage, and lower input offset voltage.
