LINEAR TECHNOLOGY LTC6800 User's Manual

LTC6800 Rail-to-Rail

Input and Output, Instrumentation Amplifier

FEATURES DESCRIPTIO 116d B CMRR Independent of Gain The LTC®6800 is a precision instrumentation amplifier. Maximum Offset Voltage: 100µV The CMRR is typically 116d B with a single 5V supply and Maximum Offset Voltage Drift: 250n V/°C is independent of gain. The input offset voltage is guaran- –40°C to 125°C Operation teed below 100µV with a temperature drift of less than

Rail-to-Rail Input Range 250n V/°C. The LTC6800 is easy to use; the gain is adjust- Rail-to-Rail Output Swing able with two external resistors, like a traditional op amp.

Supply Operation: 2.7V to 5.5V

The LTC6800 uses charge balanced sampled data tech-

Available in an MS8 and 3mm × 3mm × 0.8mm

niques to convert a differential input voltage into a single

DFN Packages

ended signal that is in turn amplified by a zero-drift operational amplifier.

APPLICATIO S

The differential inputs operate from rail-to-rail and the

single ended output swings from rail-to-rail. The LTC6800

Thermocouple Amplifiers

is available in an MS8 surface mount package. For space

Electronic Scales

limited applications, the LTC6800 is available in a

Medical Instrumentation

3mm × 3mm × 0.8mm dual fine pitch leadless package

Strain Gauge Amplifiers

(DFN).

High Resolution Data Acquisition

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

High Side Power Supply Current Sense Typical Input Referred Offset vs

Input Common Mode Voltage (VS = 3V)

VREGULATOR

VS = 3V VREF = 0V TA = 25°C

OUT 100m V/A

LTC6800

OF LOAD CURRENT10k

ILOAD LOAD

6800 TA01 G = 1

INPUT COMMON MODE VOLTAGE (V)

6800 TA02

sn6800 6800fas