LT1468

PRODUCTION

90MHz, 22V/us 16-Bit Accurate Operational Amplifier

Data Sheet Product Selection Table
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Overview

  • 90MHz Gain Bandwidth, f = 100kHz
  • 22V/µs Slew Rate
  • Settling Time: 900ns (AV = -1, 150µV, 10V Step)
  • Low Distortion, −96.5dB for 100kHz, 10VP-P
  • Maximum Input Offset Voltage: 75µV
  • Maximum Input Offset Voltage Drift: 2µV/°C
  • Maximum (−) Input Bias Current: 10nA
  • Minimum DC Gain: 1000V/mV
  • Minimum Output Swing into 2k: ±12.8V
  • Unity Gain Stable
  • Input Noise Voltage: 5nV/√Hz
  • Input Noise Current: 0.6pA/√Hz
  • Total Input Noise Optimized for 1k < RS < 20k
  • Specified at ±5V and ±15V
LT1468
90MHz, 22V/us 16-Bit Accurate Operational Amplifier
16-Bit DAC I-to-V Converter Total Harmonic Distortion vs Frequency Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 2

Application Note 2

Design Note 2

Technical Articles 5

Data Sheet

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

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Software Resources

Evaluation Software 1

LinearLab Tools

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

Hardware Ecosystem

Parts Product Life Cycle Description
Matched Resistors & Transistors 1
LT5400
RECOMMENDED FOR NEW DESIGNS Quad Matched Resistor Network
Operational Amplifiers (Op Amps) 1
LT1468-2
RECOMMENDED FOR NEW DESIGNS 200MHz, 30V/μs 16-Bit Accurate AV ≥ 2 Op Amp
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT1468
  • LT1468-2
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.

Evaluation Kits

eval board
schematic 1
DC2135A

LTC2378-20 and LT1468 Demo | Converts ±10V Single-Ended Signal with 2ppm Linearity (requires DC590 or DC890)

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Product Details

Demonstration circuit 2135A shows a simple DC accurate ADC driver circuit that converts a ±10V single-ended input signal into a fully differential signal capable of driving the LTC2378-20 with a combined linearity error of only 2ppm. The LTC2378-20 is a low power, low noise 20-bit SAR ADC with a serial output that operates from a single 2.5V supply. The demo manual refers to the LTC2378-20 but applies to all parts in the family, the only difference being the maximum sample rate. The LTC2378-20 supports a ±5V fully differential input range with a 104dB SNR, consumes only 21mW and achieves ±2ppm INL max with no missing codes at 20 bits. The DC2135A is the PCB that goes with DN1032. Refer to this design note for the theory of operation for this demo circuit. An option for a pseudo differential input drive is provided.

eval board
schematic 2
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schematic 4
schematic 5
schematic 6
DC417B

DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp

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Product Details

DC417B: Demo Board


 


eval board
schematic 7
schematic 8
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schematic 10
ADALM-MMSC

Mixed-Mode Signal Chain Active Learning Module

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Features and Benefits

  • Companion module for Active Learning labs and workshops on ADCs, mixed-mode signal chain, and DSP related topics
  • IIO-based software stack for broad, cross-platform compatibility with industry-standard tools, MATLAB, Python, and other languages
  • Configurable 2nd-order analog filter for exploring the interaction between analog and digital filters
  • Onboard clock divider provides sample rates from 5 MSPS to 40 MSPS
  • Single USB connection provides all power and connectivity

Product Details

The Analog Devices Active Learning Module - Mixed-Mode Signal Chain (ADALM-MMSC) is an educational board that facilitates hands-on exploration of fundamental signal chain concepts. The core of the circuit is the AD4080, 40 MSPS oversampling SAR analog-to-digital converter (ADC) with configurable digital filter and internal data capture memory (single-port FIFO). The board includes a highly configurable 2nd order analog filter with adjustable cutoff frequencies, input attenuation, and filter gain. An onboard selectable clock source provides sample rates from 5 MSPS to 40 MSPS. A MAX32666FTHR microcontroller runs an IIO server over a serial backend, allowing the use of standard tools such as Scopy, IIO Oscilloscope, Pyadi-iio, and ADI's MATLAB precision toolbox. The Libiio library provides language bindings for C, C#, MATLAB, Python, and other languages.

Concepts demonstrated include:

  • Digital filtering
  • Analog vs. digital anti alias filtering
  • Properties of different digital filters
  • Noise analysis
  • Reference noise

APPLICATIONS

  • Mixed Signal and Digital Signal Processing experiments, workshops, and lab exercises
  • Precision data acquisition
DC2135A
LTC2378-20 and LT1468 Demo | Converts ±10V Single-Ended Signal with 2ppm Linearity (requires DC590 or DC890)
DC2135A Schematic
DC417B
DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp
DC417B Demo Board DC417B Demo Board DC417B Demo Board DC417B Demo Board DC417B - Schematic
ADALM-MMSC
Mixed-Mode Signal Chain Active Learning Module
ADALM-MMSC Evaluation Board Angle View ADALM-MMSC Evaluation Board Top View ADALM-MMSC Evaluation Board Bottom View ADALM-MMSC Simplified Block Diagram

Latest Discussions

3 Years Ago
Differential input to ADC IN+ and ADC- for DC2390A Evaluation board
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