LT1994 - Low Noise, Low Distortion Fully Differential Input/Output Amplifier/Driver

Features

  • Click Here for LT1994 Evaluation Kits
  • 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

Typical Application

LT1994
LT1994
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Description

The LT1994 is a high precision, very low noise, low distortion, fully differential input/output amplifier optimized for 3V, single supply operation. 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. A separate internal common mode feedback path provides accurate output phase balancing and reduced even-order harmonics. This makes the LT1994 ideal for level shifting ground referenced signals for driving differential input, single supply ADCs.

The LT1994 output can swing rail-to-rail and is capable of sourcing and sinking up to 85mA. In addition to the low distortion characteristics, the LT1994 has a low input referred voltage noise of 3nV/√Hz. This part maintains its performance for supply voltages as low as 2.375V. It draws only 13.3mA of supply current and has a hardware shutdown feature that reduces current consumption to 225μA.

The LT1994 is available in an 8-pin MSOP or 8-pin DFN package.

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Packaging

MS-8, DFN-8

LT1994
LT1994
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1994CDD DFN 8 C $2.35 $1.65 View
LT1994CDD#PBF DFN 8 C $2.35 $1.65 View
LT1994CDD#TR DFN 8 C   $1.71 View
LT1994CDD#TRPBF DFN 8 C   $1.71 View
LT1994CMS8 MSOP 8 C $2.35 $1.65 View
LT1994CMS8#PBF MSOP 8 C $2.35 $1.65 View
LT1994CMS8#TR MSOP 8 C   $1.71 View
LT1994CMS8#TRPBF MSOP 8 C   $1.71 View
LT1994HDD DFN 8 H $2.70 $1.90 View
LT1994HDD#PBF DFN 8 H $2.70 $1.90 View
LT1994HDD#TR DFN 8 H   $1.96 View
LT1994HDD#TRPBF DFN 8 H   $1.96 View
LT1994IDD DFN 8 I $2.70 $1.90 View
LT1994IDD#PBF DFN 8 I $2.70 $1.90 View
LT1994IDD#TR DFN 8 I   $1.96 View
LT1994IDD#TRPBF DFN 8 I   $1.96 View
LT1994IMS8 MSOP 8 I $2.70 $1.90 View
LT1994IMS8#PBF MSOP 8 I $2.70 $1.90 View
LT1994IMS8#TR MSOP 8 I   $1.96 View
LT1994IMS8#TRPBF MSOP 8 I   $1.96 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Evaluation Kits

Part Number Description Price
DC1058A-A Combo Demoboard for LTC2203 and LT1994, req. DC718 $200.00
DC961A LT1994 70MHz Fully Differential Amplifier/Driver $50.00
DC718C none | USB Data Acquisition Controller, for Controlling QuickEval Boards $300.00
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Applications

  • Differential Input A/D Converter Driver
  • Single-Ended to Differential Conversion
  • Differential Amplifier cation with Common Mode Translation
  • Rail-to-Rail Differential Line Driver/Receiver
  • Low Voltage, Low Noise, Differential Signal Processing
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Simulate

Linear Technology offers several options for simulating our high performance operational amplifiers.

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AD8132 AD8137 AD8138 AD8139 LMH6550 LMH6551 THS4120 THS4130 THS4500 THS4505