LTC2053/LTC2053-SYNC



2053syncfc

Typical applicaTion

FeaTures

DescripTion

Precision, Rail-to-Rail,

Zero-Drift, Resistor-Programmable

Instrumentation Amplifier

fier. The CMRR is typically 116dB with a single or dual

5V supply and is independent of gain. The input offset

voltage is guaranteed below 10µV with a temperature

drift of less than 50nV/°C. The LTC2053 is easy to use;

the gain is adjustable with two external resistors, like a

traditional op amp.

The LTC2053 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 op-

erational amplifier.

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

single-ended output swings from rail-to-rail. The LTC2053

can be used in single-supply applications, as low as 2.7V.

It can also be used with dual ±5.5V supplies. The LTC2053

requires no external clock, while the LTC2053-SYNC has

a CLK pin to synchronize to an external clock.

The LTC2053 is available in an MS8 surface mount pack-

age. For space limited applications, the LTC2053 is avail-

able 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: 10µV

n

Maximum Offset Voltage Drift: 50nV/°C

n

Rail-to-Rail Input

n

Rail-to-Rail Output

n

2-Resistor Programmable Gain

n

Supply Operation: 2.7V to ±5.5V

n

n

Typical Supply Current: 750µA

n

LTC2053-SYNC Allows Synchronization to

External Clock

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.

Differential Bridge Amplifier

+

–

LTC2053

2

3

7

8

0.1µF

3V

R < 10k

1, 4

5

6

R2 10k

2053 TA01

OUT

0.1µF

R1

10

GAIN = 1+

R2

R1

INPUT COMMON MODE VOLTAGE (V)

0

15

10

5

0

–5

–10

–15

0.5

1.0

1.5

2.0

2053 TA01b

2.5

3.0

G = 1000

G = 100

G = 10

G = 1