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TSA1005

DUAL-CHANNEL, 10-BIT, 20/40MSPS A/D CONVERTER

s

10-bit, dual-channel A/D converter in deep

s

Single supply voltage: 2.5V

s

s

s

s

s

submicron CMOS technology, 20/40Msps

GNDBE

VCCBE

REFPI

VCCBI

REFMI

VCCBI

INCMI

AVCC

AVCC

OEB

NC

NC

PIN CONNECTIONS

(top view)

Independent supply for CMOS output stage

with 2.5V/3.3V capability

ENOB=9.5 @ 20Msps, ENOB=9.2 @

40Msps, Fin=10MHz

SFDR typically up to 62.5dB @ 40Msps,

Fin=10MHz.

1GHz analog bandwidth Track-and-Hold

Common clocking between channels

Multiplexed outputs

index

corner

48 47 46 45

AGND 1

INI

2

44 43 42

41 40 39 38 37

36 D0(LSB)

35 D1

34 D2

33 D3

32 D4

31 D5

AGND 3

INIB 4

AGND 5

IPOL 6

AVCCB 7

AGND 8

INQ 9

AGND 10

INBQ 11

AGND 12

13

14 15 16

17 18 19 20 21 22

23 24

TSA1005

30 D6

29 D7

28 D8

27 D9(MSB)

26 VCCBE

25 GNDBE

DESCRIPTION

The TSA1005 belongs to a new generation of high

speed, dual-channel Analog to Digital converters,

processed in a mainstream 0.25 碌m CMOS tech-

nology and yielding high performances.

The TSA1005 is specifically designed for applica-

tions requiring a very low noise floor, high SFDR

and good isolation between channels. It is based

on a pipeline structure and digital error correction,

providing high static linearity at 20/40 Msp, and

Fin = 10 MHz.

For each channel, a voltage reference is integrat-

ed to simplify the design and minimize external

components. It is nevertheless possible to use the

circuit with external references.

Each ADC output is multiplexed on a common bus

with small number of pins. A tri-state capability is

available for the output signals, allowing for chip

selection. The input signals of the ADC must be

differentially driven.

The TSA1005 is supports an extended (0 to

+85擄C) temperature range, and is available in the

small 48-pin TQFP package.

APPLICATIONS

BLOCK DIAGRAM

+2.5V/3.3V

CLK

SELECT

OEB

REFPQ

REFMQ

INCMQ

AGND

AVCC

DVCC

Timing

VINI

VINBI

VINCMI

VREFPI

VREFMI

IPOL

VREFPQ

VREFMQ

VINCMQ

VINQ

VINBQ

REF Q

REF I

AD 10

I channel

common mode

10

DGND

CLK

SELECT

Polar.

M

U

X

DGND

DVCC

GNDBI

VCCBE

10

10

Buffers

D0

TO

D9

common mode

AD 10

Q channel

10

s

s

s

s

s

Medical imaging and ultrasound

I/Q signal processing applications

High speed data acquisition system

Portable instrumentation

High resolution fax and scanners

GND

GNDBE

ORDER CODE

Part Number

TSA1005-20IF

TSA1005-20IFT

TSA1005I-40IF

TSA1005-40IFT

EVAL1005-20/BA

EVAL1005-40/BA

Temperature

Range

-40擄C to +85擄C

-40擄C to +85擄C

0擄C to +85擄C

0擄C to +85擄C

Status

Sample

Sample

Production

Production

Evaluation board

Conditioning

Tray

Tape & Reel

Tray

Tape & Reel

PACKAGE

7

脳

7 mm TQFP48

June 2003

1/22

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