LTC6244

RECOMMENDED FOR NEW DESIGNS

Dual 50MHz, Low Noise, Rail-to-Rail, CMOS Op Amp

Data Sheet Product Selection Table
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Overview

  • Input Bias Current: 1pA (Typ at 25°C)
  • Low Offset Voltage: 100μV Max
  • Low Offset Drift: 2.5μV/°C Max
  • 0.1Hz to 10Hz Noise: 1.5μVP-P
  • Slew Rate: 40V/μs
  • Gain Bandwidth Product: 50MHz
  • Output Swings Rail-to-Rail
  • Supply Operation:
    • 2.8V to 6V LTC6244
    • 2.8V to ±5.25V LTC6244HV
  • Low Input Capacitance: 2.1pF
  • Available in 8-Pin MSOP and Tiny DFN Packages

The LTC6244 is a dual high speed, unity-gain stable CMOS op amp that features a 50MHz gain bandwidth, 40V/μs slew rate, 1pA of input bias current, low input capacitance and rail-to-rail output swing. The 0.1Hz to 10Hz noise is just 1.5μVP-P and 1kHz noise is guaranteed to be less than 12nV/√Hz. This excellent AC and noise performance is combined with wide supply range operation, a maximum offset voltage of just 100μV and drift of only 2.5μV/°C, making it suitable for use in many fast signal processing applications, such as photodiode amplifiers.

This op amp has an output stage that swings within 35mV of either supply rail to maximize the signal dynamic range in low supply applications. The input common mode range extends to the negative supply. It is fully specified on 3V and 5V, and an HV version guarantees operation on supplies of ±5V.

The LTC6244 is available in the 8-pin MSOP, and for compact designs, it is packaged in the tiny dual fine pitch lead free (DFN) package.

Applications

  • Photodiode Amplifiers
  • Charge Coupled Amplifiers
  • Low Noise Signal Processing
  • Active Filters
  • Medical Instrumentation
  • High Impedance Transducer Amplifier
LTC6244
Dual 50MHz, Low Noise, Rail-to-Rail, CMOS Op Amp
Very Low Noise Large Area Photodiode VOS Distribution Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Matched Resistors & Transistors 1
LT5400
RECOMMENDED FOR NEW DESIGNS Quad Matched Resistor Network
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC6244
  • LTC6244HV

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

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Signal Chain Designer

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

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LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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