LTC6911IMS-1 datasheet(10/20 Pages) LINER

Part #	LTC6911IMS-1

Description	Dual Matched Amplifiers with Digitally Programmable Gain in MSOP

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC6911-1/LTC6911-2

10

sn691112 691112fs

TYPICAL PERFOR A CE CHARACTERISTICS (LTC6911-1)

LTC6911-1 Gain Shift

vs Temperature

TEMPERATURE (

°C)

–50

0

0.025

–0.025

25

75

6911 G01

–25

0

50

0.050

–0.050

0.075

–0.075

0.100

–0.100

100

GAIN = 100

GAIN = 10

GAIN = 1

VS = 5V

OUTPUT UNLOADED

FREQUENCY (Hz)

10

30

50

0

20

40

100

10k

100k

1M

10M

6911 G02

–10

1k

GAIN OF 100 (DIGITAL INPUT 111)

GAIN OF 1 (DIGITAL INPUT 001)

GAIN OF 2 (DIGITAL INPUT 010)

GAIN OF 5 (DIGITAL INPUT 011)

GAIN OF 10 (DIGITAL INPUT 100)

GAIN OF 20 (DIGITAL INPUT 101)

GAIN OF 50 (DIGITAL INPUT 110)

VS = 10V, VIN = 5mVRMS

GAIN

1

0

2.0

4.0

8.0

•

7.5

7.0

6.5

5.5

5.0

4.5

3.5

3.0

2.5

1.5

1.0

0.5

10

100

6911 G03

6.0

VIN = 5mVRMS

VS = 2.7V

VS = ±5V

•

••

•

LTC6911-1 Frequency Response

LTC6911-1 –3dB Bandwidth

vs Gain Setting

LTC6911-1 Channel Isolation

vs Frequency

LTC6911-1 Power Supply

Rejection vs Frequency

LTC6911-1 Noise Density

vs Frequency

FREQUENCY (Hz)

85

100

95

90

120

115

110

105

6911 G04

100k

1M

GAIN = 100

GAIN = 1

GAIN = 10

VS = 5V

VOUT = 1VRMS

FREQUENCY (Hz)

20

40

50

70

90

10k

100k

1M

10M

6911 G05

0

1k

60

30

10

80

+SUPPLY

–SUPPLY

VS = ±2.5V

GAIN = 1

FREQUENCY (Hz)

1k

1

10

100

10k

100k

6911 G06

GAIN = 1

GAIN = 10

GAIN = 100

VS = ±2.5V

TA = 25°C

INPUT REFERRED

LTC6911-1 Distortion vs Frequency

with Light Loading (RL = 10k)

LTC6911-1 THD + Noise

vs Input Voltage

FREQUENCY (Hz)

0

–60

–50

–30

150k

6911 G07

–70

–80

50k

100k

200k

–90

–100

–40

VS = ±2.5V

VOUT = 1VRMS (2.83VP-P)

GAIN = 1

GAIN = 10

GAIN = 100

LTC6911-1 Distortion vs Frequency

with Heavy Loading (RL = 500Ω)

INPUT VOLTAGE (VP-P)

–90

–70

–60

–40

–20

1m

0.1

1

10

6911 G09

–110

10n

–50

–80

–100

–30

fIN = 1kHz

VS = ±5V

BW = 100Hz TO 22kHz

GAIN = 1

GAIN = 10

GAIN = 100

FREQUENCY (Hz)

0

–60

–50

–30

150k

6911 G08

–70

–80

50k

100k

200k

–90

–100

–40

VS = ±2.5V

VOUT = 1VRMS (2.83VP-P)

GAIN = 1

GAIN = 10

GAIN = 100

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LTC6911IMS-1 Datasheet(PDF) 10 Page - Linear Technology

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