feature

Low power consumption

Wide Common Mode Differential Voltage

scope

Low input bias and bias current

Output short circuit protection

Low Total Harmonic Distortion: 0.003% typical

low noise

At f=1kHz, Vn=18nV/√Hz typical

illustrate

The TL07xx JFET input op amp family is designed to provide a wider selection than any previously developed op amp family. Each JFET-input op amp integrates well-matched high-voltage JFETs and bipolar transistors in a monolithic integrated circuit.

The device features high slew rate, low input bias and bias current, and low bias voltage temperature coefficient. Low harmonic distortion and low noise make the TL07X series ideal for

High input impedance: JFET input stage

Hi-Fi and audio preamplifier applications.

Internal frequency compensation

Offset adjustment and external compensation options

lock-free operation

Available in the TL07x series.

High slew rate: 13 V/μs typical

The analog input voltage range includes VCC+

applications

Motor Integration System: UPS

Drives and Control Solutions: AC Inverters and VF Drives

Renewable Energy: Solar Inverters

Professional Audio Mixer

DLP front projection system

oscilloscope

Pin Configuration and Function

Detailed description

Overview

The JFET input op amps in the TL07xx series are similar to the TL08x series, with low input bias and bias currents and fast slew rates. Low harmonic distortion and low noise make the TL07xx series ideal for high fidelity and audio preamplifier applications. Each amplifier features a JFET input (for high input impedance) coupled to a bipolar output stage integrated on a monolithic chip.

C-suffix devices are characterized for operation in the temperature range of 0°C to 70°C. The I-suffix device is characterized for operation in the temperature range of -40°C to 85°C. M-suffix devices are characterized for operation over the full military temperature range of -55°C to 125°C.

Functional block diagram

Feature description

total harmonic distortion

Harmonic distortion of audio signals is created by the electronic components in the circuit. Total Harmonic Distortion (THD) is a measure of the accumulated harmonic distortion of a signal in an audio system. The THD of these devices is very low at 0.003%, which means that the TL07x devices will add very little harmonic distortion when used in audio signal applications.

Slew rate

Slew rate is the rate at which an op amp can change its output when the input changes. The slew rate of these devices is 13 volts/microsecond.

Device functional mode

When the power is turned on, these devices are powered on. The device is available as a single-supply op amp or a dual-supply amplifier, depending on the application.

Application and Implementation

Notice

The information in the application section below is not part of the TI component specification and TI does not warrant its accuracy or completeness. TI's customers are responsible for determining the suitability of parts for their purpose. Customers should verify and test their design implementation to confirm system functionality.

Application Information

A typical application for an operational amplifier is an inverting amplifier. This amplifier applies a positive voltage to the input, making it a negative voltage of the same magnitude. Likewise, it also makes negative voltages positive.

typical application

Layout Guidelines

For the best operating performance of your device, use good PCB layout practices, including:

Noise can propagate into the analog circuit through the power supply pins of the circuit as well as through the op amp. Bypass capacitors reduce coupled noise by providing a low impedance source local to the analog circuit.

– Connect low ESR, 0.1µF ceramic bypass capacitors between each supply pin and ground as close to the device as possible. A single bypass capacitor from V+ to ground is suitable for single supply applications.

Separate grounding for the analog and digital parts of a circuit is one of the simplest and most effective methods of noise suppression. One or more layers on multilayer PCBs are typically used for ground planes. The ground plane helps dissipate heat and reduce EMI noise. Make sure that the digital and analog grounds are physically separated and pay attention to the flow of ground currents. See Board Layout Techniques (SLOA089) for more details.

To reduce parasitic coupling, keep the input channel as far away from the power supply or output channel as possible. If it is not possible to separate them, it is better to cross the sensitive track perpendicularly rather than parallel to the noise track.

Place external components as close to the device as possible. Keeping RF and RG close to the inverting input minimizes parasitic capacitance, as shown in . layout example

Keep the length of the input trace as short as possible. Remember that the input trace is the most sensitive part of the circuit.

Consider installing a driven low-impedance guard ring around critical traces. Guard rings can significantly reduce leakage currents from nearby traces at different potentials. Layout Guidelines (continued)

layout example