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TL064CDR

Quad low-power JFET op-amp, 1MHz GBW, 200µA/amp, SOIC-14

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Manufacturer Part：

TL064CDR

Package：

SOIC-14 (8.75 x 3.9 x 1.5mm, 1.27mm pitch)

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Description

Product Overview

The TL064CDR is a quad low-power JFET-input operational amplifier from Texas Instruments with 1MHz GBW, 3.5V/µs slew rate, and 200µA supply current per amplifier in an SOIC-14 package.

Key Specifications

Number of Amplifiers 4 (quad)
Supply Voltage Range ±3.5V to ±18V (dual) or 7V to 36V (single)
Input Offset Voltage 5mV typical, 15mV max (C-grade)
Input Bias Current 30pA typical (JFET input)
Gain-Bandwidth Product 1MHz typical
Slew Rate 3.5V/µs typical
Supply Current (per amplifier) 200µA typical
Input Resistance 10^12 Ω typical
Common-Mode Rejection 76dB typical
Operating Temperature 0°C to +70°C (C-grade)
Package SOIC-14 (8.75 x 3.9mm)

Features

  • Low power consumption: 200µA per amplifier (vs 1.4mA for TL084)
  • JFET input with 30pA typical input bias current
  • Very high input impedance: 10^12Ω
  • 1MHz gain-bandwidth product
  • Internally compensated for unity-gain stability
  • Pin-compatible with TL074 and TL084
  • Output short-circuit protection
  • Wide supply range: ±3.5V to ±18V

Applications

  • High-impedance sensor interfaces
  • Battery-powered signal conditioning
  • Active filters and tone controls
  • Photodiode and piezoelectric amplifiers
  • Audio preamplifier circuits

The TL064CDR is a quad low-power JFET-input operational amplifier from Texas Instruments, offering the high input impedance of JFET technology at only 200µA supply current per amplifier — roughly one-seventh the current of the TL084. The 30pA input bias current and 10^12Ω input resistance make it ideal for high-impedance sensor interfaces. The 1MHz gain-bandwidth product and 3.5V/µs slew rate support a wide range of audio and signal conditioning applications. The device is pin-compatible with the TL074 and TL084, providing an easy power-reduction upgrade path. The C-grade operates from 0°C to +70°C in an SOIC-14 surface-mount package.

The TL064CDR uses JFET-input differential pairs followed by bipolar gain and output stages. The P-channel JFET input transistors provide the ultra-low 30pA input bias current and 10^12Ω input resistance, allowing direct connection to high-impedance sources without loading. The input JFETs feed a bipolar differential-to-single-ended converter that provides the voltage gain. The output stage is a class-AB push-pull amplifier with short-circuit protection that can source and sink approximately 20mA. Internal compensation provides unity-gain stability with any feedback network. The 200µA per-amplifier supply current is achieved by reducing the bias current in the gain stages compared to the TL084, trading some bandwidth and slew rate for power savings. The 1MHz GBW means the open-loop gain drops to 0dB at 1MHz, providing approximately 20dB of loop gain at 100kHz — sufficient for most audio applications.

Pin Name Type Description
1 1OUT Output Amplifier 1 output
2 1IN- Input Amplifier 1 inverting input
3 1IN+ Input Amplifier 1 non-inverting input
4 VCC+ Power Positive supply
5 2IN+ Input Amplifier 2 non-inverting input
6 2IN- Input Amplifier 2 inverting input
7 2OUT Output Amplifier 2 output
8 3OUT Output Amplifier 3 output
9 3IN- Input Amplifier 3 inverting input
10 3IN+ Input Amplifier 3 non-inverting input
11 VCC- Power Negative supply (or GND for single supply)
12 4IN+ Input Amplifier 4 non-inverting input
13 4IN- Input Amplifier 4 inverting input
14 4OUT Output Amplifier 4 output
  • Sensor Interfaces: 30pA input bias current and 10^12Ω input resistance prevent loading of pH, piezoelectric, and photodiode sensors
  • Battery-Powered: 200µA per amplifier (800µA total) extends battery life in portable instrumentation
  • Active Filters: Four amplifiers per package implement multi-pole active filters with minimal IC count
  • Audio Preamps: JFET inputs and low noise suit microphone and phono preamplifier circuits
  • TL084 Upgrade: Pin-compatible drop-in replacement reduces power by 7x with slight bandwidth tradeoff
Model Manufacturer Key Difference Package Specs
TL064ACDR TI A-grade version with tighter offset voltage specifications for precision signal conditioning SOIC-14 1MHz/4-ch
TL074CDR TI Higher-performance 3MHz GBW JFET-input quad op-amp with lower noise for audio applications SOIC-14 3MHz/4-ch
TL084CDR TI Standard 3MHz GBW JFET-input quad op-amp for general-purpose analog signal processing SOIC-14 3MHz/4-ch
LM324DR TI Bipolar quad op-amp with ground-referenced inputs and single 3-32V supply operation SOIC-14 1.1MHz/bipolar
MCP6004-E/SL Microchip 1.8-6V rail-to-rail CMOS quad op-amp with 1MHz GBW for battery-powered instrumentation SOIC-14 1MHz/1.8-6V

TL064CDR is an ultra-low-power quad JFET-input op-amp in SOIC-14 with 1MHz GBW and only 200µA per amplifier supply current. TL074 and TL084 offer 3MHz GBW at higher supply current for better performance. For single-supply applications, LM324 provides ground-referenced inputs. For low-voltage designs, MCP6004 operates down to 1.8V with rail-to-rail output.

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