LTC6800



6800fb

Typical applicaTion

FeaTures

DescripTion

Rail-to-Rail,

Input and Output,

Instrumentation Amplifier

The CMRR is typically 116dB with a single 5V supply and is

independentofgain.Theinputoffsetvoltageisguaranteed

below100µVwithatemperaturedriftoflessthan250nV/°C.

The LTC6800 is easy to use; the gain is adjustable with

two external resistors, like a traditional op amp.

The LTC6800 uses charge balanced sampled data tech-

niques to convert a differential input voltage into a single

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

operational amplifier.

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

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

is available in an MS8 surface mount package. For space

limited applications, the LTC6800 is available in a 3mm ×

3mm × 0.8mm dual fine pitch leadless package (DFN).

Typical Input Referred Offset vs Input

applicaTions

n

116dB CMRR Independent of Gain

n

Maximum Offset Voltage: 100µV

n

Maximum Offset Voltage Drift: 250nV/°C

n

–40°C to 125°C Operation

n

Rail-to-Rail Input Range

n

Rail-to-Rail Output Swing

n

Supply Operation: 2.7V to 5.5V

n

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

DFN Packages

n

Thermocouple Amplifiers

n

Electronic Scales

n

Medical Instrumentation

n

Strain Gauge Amplifiers

n

High Resolution Data Acquisition

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

High Side Power Supply Current Sense

LTC6800

4

5

6

7

OUT

100mV/A

OF LOAD

CURRENT

10k

1.5m

0.1µF

150

6800 TA01

8

2

3

LOAD

INPUT COMMON MODE VOLTAGE (V)

0

–15

–10

–5

0

5

15

0.5

1

1.5

2

6800 TA02

2.5

3

10

G = 1000

G = 100

G = 10

G = 1