LTC6605-7 查看數據表（PDF） - Linear Technology

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LTC6605-7

Dual Matched 7MHz Filter with Low Noise, Low Distortion Differential Amplifier

Linear Technology 

ELECTRICAL CHARACTERISTICS

Note 8: See the Applications Information section for a detailed

discussion of input and output common mode range. Input common

mode range is tested by measuring the differential DC gain with VINCM

= mid-supply, and again with VINCM at the input common mode range

limits listed in the Electrical Characteristics table, with ΔVIN = ±0.25V,

verifying that the differential gain has not deviated from the mid-supply

common mode input case by more than 0.5%, and that the common

mode offset (VOSCM) has not deviated from the mid-supply common

mode offset by more than ±10mV.

Output common mode range is tested by measuring the differential

DC gain with VOCM = mid-supply, and again with voltage set on the

VOCM pin at the output common range limits listed in the Electrical

LTC6605-7

Characteristics table, verifying that the differential gain has not

deviated from the mid-supply common mode input case by more than

0.5%, and that the common mode offset (VOSCM) has not deviated by

more than ±10mV from the mid-supply case.

Note 9: CMRR is defined as the ratio of the change in the input common

mode voltage at the internal amplifier inputs to the change in differential

input referred voltage offset (VOS).

Note 10: Power supply rejection ratio (PSRR) is defined as the ratio of

the change in supply voltage to the change in differential input referred

voltage offset (VOS).

TYPICAL PERFORMANCE CHARACTERISTICS

Supply Current vs Temperature

37.5

VINCM = VOCM = MID-SUPPLY

35.0

32.5

30.0

VS = 2.7V, BIAS = FLOAT

27.5

VS = 3V, BIAS = FLOAT

25.0

22.5

VS

VS

VS

VS

=

=

=

=

5V, BIAS =

2.7V, BIAS

3V, BIAS =

5V, BIAS =

FLOAT

= V+

V+

V+

20.0

17.5

15.0

12.5

–60 –40 –20 0 20 40 60 80 100

TEMPERATURE (°C)

66057 G01

–3dB Frequency vs Temperature

1.0

VS = 3V

VINCM = VOCM = 1.5V

0.5

0

–0.5

–1.0

BIAS = FLOAT

BIAS = V+

–1.5

–60 –40 –20 0 20 40 60

TEMPERATURE (°C)

80 100

66057 G03

Filter Gain vs Temperature

1.010

1.005

1.000

0.995

0.990

VS = 3V, BIAS = V+

VINCM = VOCM = MID-SUPPLY

5 REPRESENTATIVE UNITS

–60 –40 –20 0 20 40 60

TEMPERATURE (°C)

80 100

66057 G02

Filter Frequency Response

10

0

–10

–20

–30

–40

–50

–60

0.1

BIAS = V+

BIAS PIN FLOATING

1

10

100

FREQUENCY (MHz)

1000

66057 G04

66057f

5

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