AD8115-EB datasheet(7/26 Pages) AD

Nome de Peças	AD8115-EB

Descrição Electrónicos	Low Cost 225 MHz 16 X 16 Crosspoint Switches

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Fabricante Electrônico	AD [Analog Devices]

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AD8114/AD8115

–7–

REV. 0

PIN FUNCTION DESCRIPTIONS

Pin Name

Pin Numbers

Pin Description

INxx

58, 60, 62, 64, 66, 68, 70, 72,

Analog Inputs; xx = Channel Numbers 00 Through 15.

4, 6, 8, 10, 12, 14, 16, 18

DATA IN

96

Serial Data Input, TTL Compatible.

CLK

97

Clock, TTL Compatible. Falling Edge Triggered.

DATA OUT

98

Serial Data Out, TTL Compatible.

UPDATE

95

Enable (Transparent) “Low.” Allows serial register to connect directly to switch matrix.

Data latched when “High.”

RESET

100

Disable Outputs, Active “Low.”

CE

99

Chip Enable, Enable “Low.” Must be “low” to clock in and latch data.

SER/PAR

94

Selects Serial Data Mode, “Low” or Parallel Data Mode, “High.” Must be connected.

OUTyy

53, 51, 49, 47, 45, 43, 41, 39,

Analog Outputs yy = Channel Numbers 00 Through 15.

37, 35, 33, 31, 29, 27, 25, 23

AGND

3, 5, 7, 9, 11, 13, 15, 17, 19, 57,

Analog Ground for Inputs and Switch Matrix. Must be connected.

59, 61, 63, 65, 67, 69, 71, 73

DVCC

1, 75

+5 V for Digital Circuitry.

DGND

2, 74

Ground for Digital Circuitry.

AVEE

20, 56

–5 V for Inputs and Switch Matrix.

AVCC

21, 55

+5 V for Inputs and Switch Matrix.

AVCCxx/yy

54, 50, 46, 42, 38, 34, 30, 26, 22

+5 V for Output Amplifier that is shared by Channel Numbers xx and yy. Must be connected.

AVEExx/yy

52, 48, 44, 40, 36, 32, 28, 24

–5 V for Output Amplifier that is shared by Channel Numbers xx and yy. Must be connected.

A0

84

Parallel Data Input, TTL Compatible (Output Select LSB).

A1

83

Parallel Data Input, TTL Compatible (Output Select).

A2

82

Parallel Data Input, TTL Compatible (Output Select).

A3

81

Parallel Data Input, TTL Compatible (Output Select MSB).

D0

80

Parallel Data Input, TTL Compatible (Input Select LSB).

D1

79

Parallel Data Input, TTL Compatible (Input Select).

D2

78

Parallel Data Input, TTL Compatible (Input Select).

D3

77

Parallel Data Input, TTL Compatible (Input Select MSB).

D4

76

Parallel Data Input, TTL Compatible (Output Enable).

NC

85–93

No Connect.

Figure 5. I/O Schematics

ESD

INPUT

VCC

AVEE

ESD

OUTPUT

VCC

AVEE

ESD

RESET

VCC

20k

DGND

ESD

INPUT

VCC

DGND

ESD

OUTPUT

VCC

2k

DGND

a. Analog Input

c. Reset Input

b. Analog Output

d. Logic Input

e. Logic Output

Nº de peça semelhante - AD8115-EB

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