LTC2054HVC(RevA) 查看數據表（PDF） - Linear Technology

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LTC2054HVC
(Rev.:RevA)

Single/Dual Micropower Zero-Drift Operational Amplifiers

Linear Technology 

FEATURES

■ Supply Current 150µA (Max per Amplifier)

Guaranteed Over Temperature

■ Offset Voltage 3µV (Max)

■ Offset Voltage Drift 30nV/°C (Max)

■ Common Mode Input Range from V– to V+ –0.5V

■ Output Swings Rail-to-Rail

■ Voltage Gain: 140dB (Typ)

■ PSRR and CMRR: 130dB (Typ)

■ Input Bias Current: 1pA (Typ, 25°C)

■ Noise: 1.6µVP-P (0.01Hz to 10Hz Typ)

■ Supply Operation:

2.7V to 6V (LTC2054/LTC2055)

2.7V to ±5.5V (LTC2054HV/LTC2055HV)

■ Low Profile (1mm) SOT-23, MS8 and

3mm

×

3mm

×

0.8mm

U

DFN

Packages

APPLICATIO S

■ Thermocouple Amplifiers

■ Electronic Scales

■ Medical Instrumentation

■ Strain Gauge Amplifiers

■ High Resolution Data Acquisition

■ DC Accurate RC Active Filters

■ Low Side Current Sense

■ Battery-Powered Systems

LTC2054/LTC2055

Single/Dual

Micropower Zero-Drift

Operational Amplifiers

DESCRIPTIO

The LTC®2054/LTC2055 are low power, low noise single/

dual zero-drift operational amplifiers available in the SOT-23

(ThinSOTTM) and MS8 packages. For space limited appli-

cations, the LTC2055 is also available in a 3mm × 3mm ×

0.8mm dual fine pitch leadless package (DFN). They

operate from a single 2.7V minimum supply and support

±5V applications. The current consumption is typically

150µA for the LTC2054 and 130µA/amp for the LTC2055.

The LTC2054/LTC2055, despite their miniature size, fea-

ture uncompromising DC performance. The typical input

offset voltage and offset drift are 0.5µV and 25nV/°C. The

almost zero DC offset and drift are supported with a power

supply rejection ratio (PSRR) and common mode rejec-

tion ratio (CMRR) of more than 130dB.

The input common mode voltage ranges from the negative

supply up to typically 0.5V from the positive supply. The

open-loop gain is typically 140dB. The LTC2054/LTC2055

also feature a 1.6µVP-P DC to 10Hz noise and a 500kHz

gain-bandwidth product.

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

ThinSOT is a trademark of Linear Technology Corporation

TYPICAL APPLICATIO

–48V Low Side Precision Current Sense

BZX84C5V1

VZ = 5.1

–48V SUPPLY

100Ω

1%

39k

100Ω

–

LTC2054

+

0.003Ω

1% 3W

–

+

ISENSE, VSENSE

Q1

ZETEX

ZVN3320F

0.01µF

0.1µF

10k

0.1µF

1%

5V

–

LTC2054

+

–48V LOAD

20545 TA01

VOUT = 100VSENSE

Supply Current (per Amplifier)

250

225

200

175

LTC2054

150

125

LTC2055

100

75

50

25

0

–40 –15

5 25 45 70

TEMPERATURE (°C)

85 125

20545 TA01b

sn20545 20545fas

1

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