CXA1166 Просмотр технического описания (PDF) - Sony Semiconductor

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CXA1166

8-bit 250 MSPS Flash A/D Converter

Sony Semiconductor 

CXA1166K

Pin Description

Pin

No.

Symbol

I/O

Standard

voltage level

1 LINV

I

ECL

33 MINV

I

ECL

Equivalent circuit

DGND1

18

r

LINV

r

or 1

r

33

MINV

–1.3V

DVEE

r

8

28

Description

Polarity selection other than

MSB and overrange.

(Refer to the table of input

voltage vs. Digital output)

Low level is maintained with

left open.

Polarity selection for MSB

(Refer to the table of input

voltage vs. Digital output)

Low level is maintained with

left open.

64 VRT

65 VRTS

52 VRM

39 VRBS

40 VRB

I

0V

VRT 64

r2

r1

VRTS 65

r⁄2

O

0V

r

r3

I

VRB/2

VRM 25

r

r

O

–2V

r4

r ⁄2

VRBS 39

r5

I

–2V

VRB 40

Reference voltage

(Top) (0V typ.)

To

Comparator

Reference voltage sense

(Top)

Reference voltage mid-point.

Can be used for linearity

compensation.

Reference voltage sense

(Bottom)

Reference voltage (Bottom)

54

55

VIN1

49

50

VIN2

VIN1

54

55

VRTS

I

to

49

VRBS

50

VIN2

43, 48, 51, 53, 56, 61

AGND

To Comp

0 to 127

128 to 255

Analog input.

Pins 49, 50 and Pins 54, 55

should be connected

externally.

35 CLK

34 CLK

DGND1

I

ECL

18

CLK

35

CLK

34

I

ECL

rr

r

r

DVEE

8

28

rr

–4–

CLK input

Complementary CLK input.

ECL threshold potential

(–1.3V) is maintained with

left open.

The complementary input is

recommended for stable

operation at high speed

though the operation only

with the CLK input is

possible when the CLK

input is left open.

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