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LT1994, LT1994CDD, LT1994CDD(LBQM)

Table of contents:
Info of LT1994
Info of LT1994CDD
Info of LT1994CDD(LBQM)

LT1994, LT1994CDD, LT1994CDD(LBQM) Selling Leads, Datasheet

MFG:LT Package Cooled:23855 D/C:08+

LT1994, LT1994CDD, LT1994CDD(LBQM) Picture

LT1994, LT1994CDD, LT1994CDD(LBQM) Datasheet download

Five Points

Part Number: LT1994

MFG: LT

Package Cooled: 23855

D/C: 08+

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LT1994 General Description

The LT®1994 is a high precision, very low noise, low distortion, fully differential input/output ampliﬁ er 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.

LT1994 Maximum Ratings

Total Supply Voltage (V+ to V) ..............................12.6V
Input Voltage (Note 2) ...............................................±VS
Input Current (Note 2) ..........................................±10mA
Input Current (VOCM,) ..........................................±10mA
VOCM .........................................................................±VS
Output Short-Circuit Duration (Note 3) ............ Indeﬁ nite
Operating Temperature Range (Note 4) ..... 40 to 85
Speciﬁ ed Temperature Range (Note 5) ...... 40 to 85
Junction Temperature
MS8 ......................................................................... 150
DFN8 ....................................................................... 125
Storage Temperature Range
MS8 ........................................................... 65 to 150
DFN8 ......................................................... 65 to 125

LT1994 Features

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/s
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 Typical Application

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

LT1994 Connection Diagram

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