Overview
The TLC2272QD 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 micropower dissipation levels. These characteristics make the TLC2272QD ideal for small-signal conditioning, particularly for high-impedance sources such as piezoelectric transducers. The device is fully specified for both single-supply and split-supply operation, offering a high gain bandwidth of 2.2 MHz and a high slew rate of 3.6 V/µs. This makes it suitable for a wide range of applications, including hand-held monitoring and remote-sensing devices, as well as interfacing with analog-to-digital converters (ADCs).
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit |
|---|---|---|---|
| Input Offset Voltage | 300 µV | 950 µV | µV |
| Input Bias Current | 1 pA | 60 pA | pA |
| Noise Voltage | 9 nV/√Hz at f = 1 kHz | - | nV/√Hz |
| Gain Bandwidth | 2.2 MHz | - | MHz |
| Slew Rate | 3.6 V/µs | - | V/µs |
| Common-Mode Input Voltage Range | -0.3 to 4 V | - | V |
| Supply Current | 2.4 mA | 3 mA | mA |
| Operating Temperature Range | -40°C to 125°C | - | °C |
| Package Type | QD (SOIC-8) | - | - |
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 HighRel Automotive Applications
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)
- Precision applications requiring low noise and low input offset voltage
- Upgrades to existing designs using TLC272 and TLC274
Q & A
- What is the typical noise voltage of the TLC2272QD?
The typical noise voltage of the TLC2272QD is 9 nV/√Hz at f = 1 kHz.
- What is the input bias current of the TLC2272QD?
The input bias current of the TLC2272QD is typically 1 pA.
- What is the gain bandwidth of the TLC2272QD?
The gain bandwidth of the TLC2272QD is typically 2.2 MHz.
- What is the slew rate of the TLC2272QD?
The slew rate of the TLC2272QD is typically 3.6 V/µs.
- What is the operating temperature range of the TLC2272QD?
The operating temperature range of the TLC2272QD is -40°C to 125°C.
- What package types are available for the TLC2272?
The TLC2272 is available in several package types, including QD (SOIC-8).
- Is the TLC2272QD suitable for high-impedance sources?
Yes, the TLC2272QD is excellent for small-signal conditioning for high-impedance sources such as piezoelectric transducers.
- Can the TLC2272QD be used in hand-held monitoring applications?
Yes, the TLC2272QD is suitable for hand-held monitoring and remote-sensing applications due to its micropower dissipation levels.
- Is the TLC2272QD compatible with analog-to-digital converters (ADCs)?
Yes, the TLC2272QD is a great choice when interfacing with ADCs due to its rail-to-rail output feature.
- What are the performance upgrades of the TLC2272QD compared to older models?
The TLC2272QD offers increased output dynamic range, lower noise voltage, and lower input offset voltage compared to the TLC272 and TLC274.
- Is the TLC2272QD available for automotive applications?
Yes, the TLC2272QD is available in Q-Temp Automotive HighRel configurations, making it suitable for automotive applications.
