LTC2054/LTC2055

1

20545fc

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Single/Dual Micropower

Zero-Drift Operational Amplifiers

dual, zero-drift operational amplifiers with an extended

temperature version (LTC2054MP) that has guaranteed

specifications from –55°C to 150°C. They are available

in TSOT-23 (ThinSOT™) and MS8 packages. For space

limited applications, 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, feature

uncompromising DC performance. The maximum input

offset voltage and offset drift are 3.0μV and 30nV/°C over

the –40°C to 85°C industrial temperature range. The almost

zero DC offset and drift are supported with a power supply

rejection ratio (PSRR) and common mode rejection ratio

(CMRR) of 130dB (typ).

The input common mode voltage ranges from the negative

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

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

gain-bandwidth product.

–48V Low Side Precision Current Sense

Guaranteed from –40°C to 85°C

(LTC2054MP)

2.7V to 6V (LTC2054/LTC2055)

2.7V to ±5.5V (LTC2054HV/LTC2055HV)

3mm × 3mm × 0.8mm DFN Packages

TEMPERATURE (°C)

20545 TA01b

10

8

6

4

2

0

–2

–4

–6

–8

–10

–55

155

15

50

85

120

–20

–

+

0.01μF

0.1μF

0.1μF

0.003Ω

1% 3W

39k

BZX84C5V1

–48V SUPPLY

–

+

100Ω

1%

LTC2054

20545 TA01

–

+

10k

1%

5V

LTC2054

–48V LOAD

Q1

ZETEX

ZVN3320F

100Ω

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

Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners.