LT1567I Просмотр технического описания (PDF) - Linear Technology

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LT1567I

1.4nV/√Hz 180MHz Filter Building Block

Linear Technology 

APPLICATIO S I FOR ATIO

R1

VIN

R2

LT1567

2

–

16

600Ω

600Ω

VREF

0.1µF

3

5

+

–

7pF

150Ω

V+

8 0.1µF

+

V–

4

VOUT1

R

C VDIFF

7 VOUT2 R

1567 F03a

V+

( ) VOUT1

=

– R2

R1

•

VIN

+

R2 + 1

R1

• VREF

VOUT2 = –VOUT1 + 2 VREF

VDIFF

=

VOUT2 –

VOUT1

=

2

•

R2

R1

• (VIN

–

VREF)

f–3dB

=

4π

1

•R

•

C

fηBW IS THE NOISE BANDWIDTH

fηBW =

1.57

4π • R • C

LT1567

Differential Output Signal-to-Noise Ratio

(for a Sinewave Signal)

110

VDIFF GAIN = 2

R1 = R2 = 200Ω

100

90

80

70

0.5

VDIFF GAIN = 10

R1 = 200Ω

R2 = 1k

V+ = 5V

f–3dB = 2.55MHz

fNBW = 4MHz

1 1.5 2 2.5 3

VDIFF (VRMS)

1567 F03b

Figure 3. A Single Ended to Differential Amplifier

1567fa

11

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