VCA8500IRGCR datasheet(6/15 Pages) TI

Part #	VCA8500IRGCR

Description	8-Channel, Ultra-Low Power Variable Gain Amplifier with Low-Noise Pre-Amp

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Manufacturer	TI [Texas Instruments]

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DEVICE INFORMATION

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

VBL5

IN5

AVDD1

VBL6

IN6

VBL7

IN7

VBL8

IN8

AVDD2

VB2

VB6

VB4

VREFH

VREFL

AVDD1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

VBL1

IN1

AVDD1

IN2

VBL2

VBL3

IN3

VBL4

IN4

V

CNTL

AVDD2

VB3

VB1

VB5

VCM

64

63

62

61

60

59

58

57

56

55

54

17

18

19

20

21

22

23

24

25

26

27

53

52

51

50

49

28

29

30

31

32

PowerPAD

TM

VCA8500

AVDD1

VCA8500

SBOS390 – JANUARY 2008

RGC PACKAGE

QFN-64

(TOP VIEW)

Table 1. TERMINAL FUNCTIONS

TERMINAL

PIN NO.

NAME

I/O

DESCRIPTION

1

VBL1

Internal bias voltage; bypass with 0.1

µF (min)

2

IN1

I

LNA input channel 1

3

AVDD1

+3.3V analog supply

4

IN2

I

LNA input channel 2

5

VBL2

Internal bias voltage; bypass with 0.1

µF (min)

6

VBL3

Internal bias voltage; bypass with 0.1

µF (min)

7

IN3

I

LNA input channel 3

8

VBL4

Internal bias voltage; bypass with 0.1

µF (min)

9

IN4

LNA input channel 4

10

VCNTL

I

Attenuator control voltage input (all channels)

11

AVDD2

+5V Analog supply (VCA, CW)

12

VB3

Internal bias voltage; bypass with 0.1

µF (min)

13

VB1

Internal bias voltage; bypass with 2.2

µF (1.0µF min)

14

VB5

Internal bias voltage; bypass with 0.1

µF (min)

15

VCM

Internal common-mode voltage; bypass with 0.1

µF (min)

16

AVDD1

+3.3V analog supply

17

OUT4

O

PGA output channel 4 (inverted)

18

OUT4

O

PGA output channel 4

19

OUT3

O

PGA output channel 3 (inverted)

20

OUT3

O

PGA output channel 3

6

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