LT1101 - Precision, Micropower, Single Supply Instrumentation Amplifier (Fixed Gain = 10 or 100)

Features

  • Gain Error: 0.04% Max
  • Gain Non-Linearity: 0.0008% (8ppm) Max
  • Gain Drift: 4ppm/°C Max
  • Supply Current: 105µA Max
  • Offset Voltage: 160µV Max
  • Offset Voltage Drift: 0.4µV/°C Typ
  • Offset Current: 600pA Max
  • CMRR, G=100: 100dB Min
  • 0.1Hz to 10Hz Noise: 0.9µVp-p: 2.3pAp-p Typ
  • Gain Bandwidth Product: 250kHz Min
  • Single or Dual Supply Operation
  • Surface Mount Package Available

Typical Application

LT1101 Typical Application
LT1101 Typical Application

Description

The LT1101 establishes the following milestones: (1) It is the first micropower instrumentation amplifier, (2) It is the first single supply instrumentation amplifier, (3) It is the first instrumentation amplifier to feature fixed gains of 10 and/or 100 in low cost, space-saving 8-lead packages.

The LT1101 is completely self-contained: no external gain setting resistor is required. The LT1101 combines its micropower operation (75µA supply current) with again error of 0.008%, gain linearity of 3ppm, gain drift of 1ppm/°C. The output is guaranteed to drive a 2k load to ±10V with excellent gain accuracy.

Other precision specifications are also outstanding: 50µV input offset voltage, 130pA input offset current, and low drift (0.4µV/°C and 0.7pA/°C). In addition, unlike other instrumentation amplifiers, there is no output offset voltage contribution to total error.

A full set of specifications are provided with ±15V dual supplies and for single 5V supply operation. The LT1101 can be operated from a single lithium cell or two Ni-Cad batteries. Battery voltage can drop as low as 1.8V, yet the LT1101 still maintains its gain accuracy. In single supply applications, both input and output voltages swing to within a few millivolts of ground. The output sinks current while swinging to ground?no external, power consuming pull down resistors are needed.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT1101ACN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1101AIN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1101CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1101IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1101ISW#PBF SW-16 SW I 05-08-1620 (SW16) Yes
LT1101ISW#TRPBF SW-16 SW I 05-08-1620 (SW16) Yes
LT1101SW#PBF SW-16 SW C 05-08-1620 (SW16) Yes
LT1101SW#TRPBF SW-16 SW C 05-08-1620 (SW16) Yes


LT1101 Package Drawing
LT1101 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT1101ACN8#PBF N-8 C $8.17 $6.60 Yes
LT1101AIN8#PBF N-8 I $10.17 $8.35 Yes
LT1101CN8#PBF N-8 C $5.83 $4.75 Yes
LT1101IN8#PBF N-8 I $7.25 $5.95 Yes
LT1101ISW#PBF SW-16 I $8.65 $6.90 Yes
LT1101ISW#TRPBF SW-16 I $6.96 Yes
LT1101SW#PBF SW-16 C $7.00 $5.70 Yes
LT1101SW#TRPBF SW-16 C $5.76 Yes
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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.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Differential Signal Amplification in Presence of Common-Mode Voltage
  • Micropower Bridge Transducer Amplifier-Thermocouples-Strain Gauges-Thermistors
  • Differential Voltage to Current Converter
  • Transformer Coupled Amplifier
  • 4mA-20mA Bridge Transmitter

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LT1101
LT1101A

Technical Support