VCA824IDGSR datasheet(5/36 Pages) TI

Part #	VCA824IDGSR

Description	Ultra-Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER

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Manufacturer	TI [Texas Instruments]

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5 / 36 page

TYPICAL CHARACTERISTICS: VS = ±5V, DC Parameters

10

1

0.1

GainResistor(

)

W

10

100

1k

I

=2.6mA

RG MAX

V

(V

)=2 ´ R

I

(A )

´

INMAX

PP

G

RG MAX

P

40

35

30

25

20

15

10

5

0

FeedbackResistor(

)

W

100

1k

10k

I

=2.6mA

RG

A

(V/V)=2 ´ [R /V (V )]

2

I

(A

´

)

VMAX

F

IN

PP

P

RG

V

=1V

O

PP

V

=2V

O

PP

V

=4V

O

PP

V

=3V

O

PP

60

50

40

30

20

10

0

OutputVoltage(V

)

PP

0.1

1

10

I

=2.6mA

RG

A

(V/V)=2 ´ [R /V (V )]

2

I

(A

´

)

VMAX

F

IN

P

PP

RG

R

F

=3kW

R

F

=2kW

R

F

=1.5kW

R

F

=1kW

R

F

=500W

R

F

=4kW

R

F

=5kW

11

10

9

8

7

6

5

4

3

2

1

0

-1

ControlVoltage(V)

-1.2

-0.8

-0.4

0

0.4

0.8

1.2

RelativeErrorto

MaximumGain

AbsoluteError

21

20

19

18

17

16

15

14

13

ControlVoltage(V)

0

0.2

0.4

0.6

0.8

1.0

RelativeErrortoLinearRegression

LinearRegression

DataEquation:

y=20log(4.9619x+5.0169)

Data

24

22

20

18

16

14

12

10

8

6

4

2

0

-2

-4

-6

ControlVoltage(V)

-0.8

-0.6 -0.4 -0.2

0

0.2

0.4

0.6

0.8

1.0

RelativeErrortoLinearRegression

LinearRegression

DataEquation:

y=20log(4.9619x+5.0169)

Data

VCA824

www.ti.com....................................................................................................................................... SBOS394C – NOVEMBER 2007 – REVISED DECEMBER 2008

At TA = +25°C, RL = 100Ω, VG = +1V, and VIN = single-ended input on +VIN with –VIN at ground, unless otherwise noted.

MAXIMUM DIFFERENTIAL INPUT VOLTAGE vs RG

MAXIMUM GAIN ADJUST RANGE vs RF

Figure 1.

Figure 2.

MAXIMUM GAIN ADJUST RANGE vs

GAIN ERROR BAND vs

PEAK-TO-PEAK OUTPUT VOLTAGE

GAIN CONTROL VOLTAGE

Figure 3.

Figure 4.

GAIN ERROR BAND vs

GAIN CONTROL VOLTAGE

Figure 5.

Figure 6.

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VCA824IDGSR Datasheet(PDF) 5 Page - Texas Instruments

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