LTC6229

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0.88nV/√Hz 730MHz, 500V/µs, Low Distortion Rail-to-Rail Output Op Amps with Shutdown

Data Sheet (Rev. B) Product Selection Table
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Overview

  • Ultra Low Voltage Noise: 0.88nV/√Hz
  • Low Distortion at High Speeds:
    • HD2/HD3 < −100dBc (Av = +1, 4VP-P, 2MHz, RL = 1kΩ)
  • High Slew Rate: 500V/μs
  • GBW = 890MHz
  • –3dB Frequency (AV = +1): 730MHz
  • Input Offset Voltage: 250μV Max Across Temperature
  • Offset Drift :0.4μV/°C
  • Input Common Mode Range Includes Negative Rail
  • Output Swings Rail-to-Rail
  • Supply Current: 16mA/Channel Typ
  • Shutdown Supply Current = 500µA
  • Operating Supply Range: 2.8V to 11.75V
  • Large Output Current: 80mA Min
  • Very High Open Loop Gain: 5.6V/μV (135dB), RL = 1kΩ
  • Operating Temp Range: –40°C to 125°C
  • Singles in 8-Lead SOIC, TSOT-23, DC-6, Duals in DD10, MS8

The LTC6228/LTC6229 are single/dual very fast, low noise rail-to-rail output, unity gain stable op amps. They have a gain-bandwidth product of 890MHz and a slew rate of 500V/μs. The low input referred voltage noise of only 0.88nV/√Hz and low distortion performance of better than −100dB at 4VP-P even for signals as fast as 2MHz make them ideal for applications that require high dynamic range and deal with high slew rate signals, such as driving A/D converters. Additional features include Shutdown and the ability to enable/disable internal bias current cancellation to optimize noise performance.

The combination of low offset, low offset drift, high gain and high CMRR make the LTC6228 family the superior choice for wide dynamic range applications.

The LTC6228 family maintains excellent performance for supply voltages of 2.8V to 11.75V and the devices are specified at supplies of 3V, 5V and 10V(±5V). With an input range extending to the negative rail and an output range that encompasses the entire supply range, the operational amplifier can accommodate wide swinging signals, and single supply operation.

For space constrained PCB layouts, the LTC6228 is available in a 2mm × 2mm DFN and the LTC6229 is available in a 3mm × 3mm DFN. The amplifiers are also available in conventional leaded packages. These amplifiers can be used as improved replacements for many high speed op amps to improve speed, noise, distortion and dynamic range.

Applications

  • Optical Electronics: Fast Transimpedance Amplifiers
  • Driving High Dynamic Range A/D Converters
  • Active Filters
  • Video Amplifiers
  • High Speed Differential to Single-Ended Conversion
  • Low Voltage Hi-Fi Amplification
LTC6229
0.88nV/√Hz 730MHz, 500V/µs, Low Distortion Rail-to-Rail Output Op Amps with Shutdown
LTC6228-6229 Application Circuit LTC6228-6229 Performance Graph LTC6228-6229 Pin Configuration LTC6228-6229 Pin Configuration LTC6228-6229 Pin Configuration LTC6228-6229 Pin Configuration LTC6228-6229 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
ADA4899-1
PRODUCTION Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp
ADA4817-2
PRODUCTION Dual, Low Noise, 1 GHz FastFET Op Amplifier
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Tools & Simulations

Precision ADC Driver Tool

The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

Open Tool

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.

Open Tool

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.

Open Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

Evaluation Kits

eval board
schematic 1
EVAL-LTC6227MS8E
EVAL-LTC6229MS8E

Evaluating the LTC6227 and LTC6229 Low Distortion, Rail-to-Rail Output Op Amps

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Features and Benefits

  • Enables efficient prototyping
  • User defined circuit configuration
  • Edge mounted SMA connector provisions
  • Simple connection to test equipment and other circuits
  • RoHS compliant 

Product Details

The EVAL-LTC6227MS8E/EVAL-LTC6229MS8E allow the evaluation of the LTC6227 and LTC6229, 8-lead, dual-channel, micro small outline package (MSOP) op amps. The EVAL-LTC6227MS8E and the EVAL-LTC6229MS8E are prepopulated boards on a buffer configuration with a post low-pass filter. This configuration allows the LTC6227 and LTC6229 to be used as high speed analog-to-digital converter (ADC) drivers. The EVAL-LTC6227MS8E/EVAL-LTC6229MS8E support other typical configurations of the op amps, and are configured and have provisions for typical applications of the LTC6227 and the LTC6229, including high speed, low voltage, low noise, in-amp, and as an active filter. The exposed paddle pin is already shorted to the VEE turret pin, which is required for the device.

The 4-layer EVAL-LTC6227MS8E/EVAL-LTC6229MS8E accept edge mounted, Subminiature Version A (SMA) connectors on both inputs and outputs to provide an efficient connection to the test equipment and other circuitry. In addition, the EVAL-LTC6227MS8E/EVAL-LTC6229MS8E have sufficient test points for both signal pins and groundings.

Optimized power and ground planes ensure low noise and high speed operation. Component placement and power supply bypassing are optimized for maximum circuit flexibility and performance. The EVAL-LTC6227MS8E/EVAL-LTC6229MS8E accept C0402 or C0603 surface-mount technology (SMT) components and C1206 bypass capacitors for C5 and C6.

All components are placed on the primary side of the EVAL-LTC6227MS8E/EVAL-LTC6229MS8E, and no components are placed on the secondary side. The EVAL-LTC6227MS8E and EVAL-LTC6229MS8E evaluation boards are identical except for the on-board devices.

For full details on the LTC6227 and the LTC6229, see the LTC6227 and the LTC6229 data sheets, which must be consulted in conjunction with the user guide when using the EVAL-LTC6227MS8E/EVAL-LTC6229MS8E.
EVAL-LTC6227MS8E
EVAL-LTC6229MS8E
Evaluating the LTC6227 and LTC6229 Low Distortion, Rail-to-Rail Output Op Amps
eval-ltc6229ms8e

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