1 Features

1 output swing includes two supply rails

Low noise: 9 nV/√Hz, typical frequency f=1 kHz

Low Input Bias Current: 1-pA typical

Fully specified for single-supply and split-supply operation

The 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: 950μV max

TA=25°C

including macro models

TLC272 and

Type TLC274

Provided by Q-Temp Automotive

2 apps

White goods (refrigerators, washing machines)

Handheld Monitoring System

Configuration Control and Printing Support

sensor interface

battery powered applications

3 Instructions

The TLC2272 and TLC2274 are dual and quad op amps from Texas Instruments. Both devices feature rail-to-rail output performance to increase dynamic range for single-supply or split-supply applications. The TLC227x family offers 2 MHz bandwidth at higher speeds and 3v/µs slew rate applications. These devices offer comparable AC performance with better noise, input offset voltage and power consumption than existing CMOS op amps. The TLC227x has a noise voltage of 9nV/√Hz, which is twice as low as the competition.

The TLC227x series of devices, exhibiting high input impedance and low noise, are suitable for the conditioning of small-signal high-impedance sources such as piezoelectric transducers. Because of the micro-power dissipation levels, these devices work well in handheld monitoring and remote sensing applications. In addition, the rail-to-rail output feature, with single-or separate supply, enables this family to interface with analog-to-digital converters (ADCs). For precision applications, the TLC227xA series has a maximum input bias voltage of 950µV. The series is available at 5 V and 5 V.

TLC227x also correct

TLC27x in standard design. They offer more output dynamic range, low noise voltage, and low input bias voltage. This enhanced feature set allows for their wider application. For applications requiring higher output drive and a wider input voltage range, see the TLV2432 and TLV2442 devices.

If your design requires a single amplifier, see the TLV2211, TLV2221, and TLV2231 families. These devices are single rail op amp SOT-23 packages. Small size and low power consumption make them ideal for high-density, battery-operated devices.

Detailed description

Overview

The TLC227x and TLC227xA family of devices are rail-to-rail output operational amplifiers. Operating from a 4.4-V to 16-V single supply and ±2.2-V ±8-V dual supply, these devices are unity-gain stable and suitable for a wide range of general-purpose applications.

Functional block diagram

Feature description

The TLC227x and TLC227xA series devices feature a 2-MHz bandwidth and 9 nV/√Hz voltage noise performance ratings of 4.4 V to 16 V over the automotive temperature range (–40°C to 125°C). Lin Moss suits a wide range of audio, automotive, industrial and instrumentation applications.

Device Functional Mode When power is applied, the TLC227x and TLC227xA series devices are powered up. These devices can use single or dual power supplies, depending on the application. Once the supply is higher than the recommended value.

Application and Implementation

Notice

The information in the application section below is not part of the specifications for TI components, and the technical information is not guaranteed to be accurate or complete. TI's customer is responsible for determining part suitability. Customers should validate and test their design implementation to confirm system functionality.

Application Information

Macro model information

The macromodel information provided was derived using MicroSim Parts™, the model generation software with the Micro PSpice Boyle macromodel (1) and subcircuit in Figure 59. Typical electrical and operational characteristics at TA=25°C were generated using the TLC227x. Using this information, outputting the following key parameters yields a tolerance of 20% (in most cases):

Maximum Positive Output Voltage Swing

Maximum Negative Output Voltage Swing

Slew rate

Static power

Input bias current

Open loop voltage amplification

unity gain frequency

Common Mode Rejection Ratio

phase margin

DC output resistance

AC output resistance

Short circuit output current limit

typical application

High side current monitor

layout

Layout Guidelines

The TLC227x and TLC227xA family of devices are broadband amplifiers. To achieve the performance requirements of a fully operational device, good high-frequency printed circuit board (PCB) layout practices are essential. Low loss 0.1µF bypass capacitors must be connected between each supply pin and ground, as close to the device as possible. Bypass capacitor lines should be designed with minimal inductance.

layout example