5

LT 2078/LT 2079

LT2078AC/LT2079AC

LT2078C/LT2079C

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Input Offset Voltage

LT2078

q

70

330

90

460

µV

LT2079

q

80

410

100

540

µV

Input Offset Voltage Drift

LT2078

q

0.5

1.8

0.6

2.5

µV/°C

∆T

(Note 5)

LT2079

q

0.6

3.0

0.7

3.8

µV/°C

Input Offset Current

q

0.06

0.35

0.06

0.50

nA

Input Bias Current

q

69

6

11

nA

Large-Signal Voltage Gain

q

300

1200

250

1200

V/mV

CMRR

Common Mode Rejection Ratio

q

95

112

92

112

dB

PSRR

Power Supply Rejection Ratio

q

98

112

95

112

dB

Maximum Output Voltage Swing

q

±11.0

±13.6

±11.0

±13.6

V

Supply Current per Amplifier

q

49

73

50

85

µA

temperature range.

Note 1: Typical parameters are defined as the 60% yield of parameter

distributions of individual amplifiers, i.e., out of 100 LT2079s (or 100

LT2078s) typically 240 op amps (or 120) will be better than the indicated

specification.

Note 2: This parameter is tested on a sample basis only. All noise

Note 3: This parameter is guaranteed by design and is not tested.

Note 4: Power supply rejection ratio is measured at the minimum supply

voltage. The op amps actually work at 1.8V supply but with a typical offset

skew of –300

µV.

Note 5: This parameter is not 100% tested.

Note 6: The LT2078C/LT2079C are designed, characterized and expected

to meet the industrial temperature limits, but are not tested at – 40

°C and

85

°C. I-grade parts are guaranteed.

Input Bias Current vs

Common Mode Voltage

COMMON MODE VOLTAGE (V)

–1

0

–2

–4

–6

–8

–10

–12

012

3

LT2078/79 • TPC03

4

Input Bias and Offset Currents vs

Temperature

TEMPERATURE (

°C)

–50

100

50

0

–5

–6

–7

0

50

75

LT2078/79 • TPC02

–25

25

100

125

Distribution of Offset Voltage

Drift with Temperature

OFFSET VOLTAGE DRIFT WITH TEMPERATURE (

µV/°C)

25

20

15

10

5

0

LT2078/79 • TPC01

–2

–1

0

1

2

80 LT2078'S

25 LT2079'S

= 260 OP AMPS