LT1994

PRODUCTION

Low Noise, Low Distortion Fully Differential Input/Output Amplifier/Driver

Part Models
12
1ku List Price
Starting From $2.01
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Part Details

  • Fully Differential Input and Output
  • Wide Supply Range: 2.375V to 12.6V
  • Rail-to-Rail Output Swing
  • Low Noise: 3nV/√Hz
  • Low Distortion, 2VP-P, 1MHz: –94dBc
  • Adjustable Output Common Mode Voltage
  • Unity Gain Stable
  • Gain-Bandwidth: 70MHz
  • Slew Rate: 65V/μs
  • Large Output Current: 85mA
  • DC Voltage Offset <2mV MAX
  • Open-Loop Gain: 100V/mV
  • Low Power Shutdown
  • 8-Pin MSOP or 3mm × 3mm DFN Package
LT1994
Low Noise, Low Distortion Fully Differential Input/Output Amplifier/Driver
A/D Preamplifier: Single-Ended Input to Differential Output  with Common Mode Level Shifting LT1994 Driving an LTC1403A-1 1MHz  Sine Wave, 8192 Point FFT Plot Product Package 1 Product Package 2
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Documentation

Data Sheet

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

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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LT1994

ADI DiffAmpCalc™

ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.

Open Tool

ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

Open Tool

Signal Chain Designer - BETA

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

Sys-Parameter Models for Keysight Genesys

Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.

Open Tool
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
DC961B

LT1994 Low Noise, Low Distortion, Fully Differential Amplifier/Driver

Product Details

Demonstration circuit 961 features an LT1994, low noise, low distortion, fully differential amplifier. The LT1994 is a high precision, very low noise, low distortion, fully differential input/output amplifier. The LT1994’s output common mode voltage is independent of the input common mode voltage, and is adjustable by applying a voltage on the VOCM pin. The DC961 board contains an LT1994 amplifier configured as a unity gain differential amplifier with 499Ω feedback and input resistors. Gains greater than one require changing the input resistors to a value lower than 499Ω. In addition, DC961 has surface mount pads and traces for resistors and capacitors for building first and second order fully differential filter circuits. The differential outputs of DC961 can be configured with a first order RC network for driving the differential inputs of an analog-to-digital converter (ADC).

 

eval board
DC1058A-A

Combo Demo Board for LTC2203 and LT1994, Requires DC718

Product Details

DC1058A-A: Demo Board for the LT1994 Low Noise, Low Distortion Fully Differential Input/Output Amplifier/Driver and LTC2203 16-Bit, 25Msps ADCs.

DC961B
LT1994 Low Noise, Low Distortion, Fully Differential Amplifier/Driver
DC961B - Demo Board Image
DC1058A-A
Combo Demo Board for LTC2203 and LT1994, Requires DC718
DC1058A-A - Schematic

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