TSA1203IFT-E 데이터 시트보기 (PDF) - STMicroelectronics

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TSA1203IFT-E

Dual-channel 12-bit 40Msps 215mW A/D converter

STMicroelectronics 

Schematic diagram

1

Schematic diagram

TSA1203

Figure 1. TSA1203 block diagram

+2.5V/3.3V

CLK SELECT OEB

VCCBE

VINI

VINBI

VINCMI

VREFPI

VREFMI

IPOL

VREFPQ

VREFMQ

VINCMQ

VINQ

VINBQ

AD 12

I channel

common mode

REF I

Polar.

REF Q

common mode

AD 12

Q channel

Timing

12

M 12

12 D0

U

Buffers

TO

X

D11

12

GND

GNDBE

Figure 2. Timing diagram

Simultaneous sampling on

I/Q channels

N+4

N+3

I

N+2

N-1

N+1

N

Q

N+5

N+6

N+12

N+7

N+11

N+8

N+10

N+9

N+13

CLK

SELECT

Tpd I + Tod

Tod

CLOCK AND SELECT CONNECTED TOGETHER

OEB

DATA

OUTPUT

sample N-9

I channel

sample N-8

I channel

sample N-6

Q channel

sample N-7

Q channel

sample N sample N+1 sample N+2

Q channel Q channel Q channel

sample N+1 sample N+2 sample N+3

I channel I channel I channel

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