LTC6912CGN-1 datasheet(3/24 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

3

6912fa

GAI SETTI GS A D PROPERTIES

Table 1. LTC6912-1 GAIN SETTINGS AND PROPERTIES

UPPER/LOWER

NOMINAL

NIBBLE

VOLTAGE GAIN

MAXIMUM LINEAR INPUT RANGE (VP-P)

Q7

Q6

Q5

Q4

Dual 5V

Single 5V

Single 3V

NOMINAL INPUT NOMINAL OUTPUT

Q3

Q2

Q1

Q0

Volts/Volt

dB

Supply

IMPEDANCE (k

Ω) IMPEDANCE (Ω)

0000

0

–120

10

5

3

(Open)

0.4

0001

–1

0

10

5

3

10

0.7

0010

–2

6

5

2.5

1.5

5

3.4

0011

–5

14

2

1

0.6

2

3.4

0100

–10

20

1

0.5

0.3

1

3.4

0101

–20

26

0.5

0.25

0.15

1

6.4

0110

–50

34

0.2

0.1

0.06

1

15

0111

–100

40

0.1

0.05

0.03

1

30

1

0

X

0

–120

10

5

3

(Open)

1

X

Not Used (Note 11)

Not Used

Table 2. LTC6912-2 GAIN SETTINGS AND PROPERTIES

UPPER/LOWER

NOMINAL

NIBBLE

VOLTAGE GAIN

MAXIMUM LINEAR INPUT RANGE (VP-P)

Q7

Q6

Q5

Q4

Dual 5V

Single 5V

Single 3V

NOMINAL INPUT NOMINAL OUTPUT

Q3

Q2

Q1

Q0

Volts/Volt

dB

Supply

IMPEDANCE (k

Ω) IMPEDANCE (Ω)

0000

0

–120

10

5

3

(Open)

0.4

0001

–1

0

10

5

3

10

0.7

0010

–2

6

5

2.5

1.5

5

3.4

0011

– 4

12

2.5

1.25

0.75

2.5

3.4

0100

–8

18.1

1.25

0.625

0.375

1.25

3.4

0101

–16

24.1

0.625

0.3125

0.188

1.25

6.4

0110

–32

30.1

0.3125

0.156

0.094

1.25

15

0111

–64

36.1

0.156

0.078

0.047

1.25

30

1

0

X

0

–120

10

5

3

(Open)

1

X

Not Used (Note 11)

Not Used

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