LTC6912CGN-1 datasheet(10/24 Pages) LINER

Part #	LTC6912CGN-1

Description	Dual Programmable Gain Amplifiers with Serial Digital Interface

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Manufacturer	LINER [Linear Technology]

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LTC6912

10

6912fa

ELECTRICAL CHARACTERISTICS The ● denotes the specifications that apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VS = 5V, AGND = 2.5V, Gain = 1, RL = 10k to midsupply point, unless

otherwise noted.

C, I GRADES

H GRADE

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Specifications for the LTC6912-2 ONLY

Offset Voltage Magnitude

Gain = 1

●

0.25

3.5

0.25

6.5

mV

Referred to INA or INB Pins

Gain = 8

●

0.14

2

0.14

4

mV

(Note 8)

Input Offset Voltage Drift,

6

10

µV/°C

Internal Op Amp

DC Input Resistance at

DC VINA or VINB = 0V

INA or INB Pins (Note 9)

Gain = 0

●

>10

M

Ω

State = 8, Software Shutdown

●

>10

M

Ω

Gain = 1

●

10

k

Ω

Gain = 2

●

55

k

Ω

Gain = 4

●

2.5

k

Ω

Gain > 4

●

1.25

k

Ω

DC Input Resistance Drift at

Gain = 1

85

95

ppm/

°C

INA or INB Pins (Note 9)

Gain = 2

90

100

ppm/

°C

Gain = 4

95

105

ppm/

°C

Gain = 8

120

130

ppm/

°C

Gain = 16

130

140

ppm/

°C

Gain = 32

140

150

ppm/

°C

Gain = 64

170

180

ppm/

°C

DC Input Resistance Match

Gain = 1

●

10

Ω

RINA-RINB

Gain = 2

●

55

Ω

Gain = 4

●

55

Ω

Gain > 4

●

55

Ω

DC Small Signal Output Resistance

DC VINA or VINB = 0V

at OUT A or OUT B Pins

Gain = 0

0.4

Ω

Gain = 1

0.7

Ω

Gain = 2

1.0

Ω

Gain = 4

1.9

Ω

Gain = 8

3.4

Ω

Gain = 16

6.4

Ω

Gain = 32

15

Ω

Gain = 64

30

Ω

State = 8, Software Shutdown

●

>1

M

Ω

Gain Bandwidth Product

Gain = 64

●

17

30

50

15

30

50

MHz

Wideband Noise

f = 1kHz to 200kHz

(Referred to Input)

Gain = 0 (Output Noise Only)

8.1

µVRMS

Gain = 1

13.8

µVRMS

Gain = 2

9.6

µVRMS

Gain = 4

7.5

µVRMS

Gain = 8

6.4

µVRMS

Gain = 16

6.0

µVRMS

Gain = 32

5.8

µVRMS

Gain = 64

5.6

µVRMS

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LTC6912CGN-1 Datasheet(PDF) 10 Page - Linear Technology

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