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TSA1401

14-BIT, 20MSPS, 85mW A/D CONVERTER

FEATURES

s

OPTIMWATT features

l

Ultra low power consumption: 85mW at

20Msps (using external references).

l

Adjustable consumption versus speed.

TM

1

APPLICATIONS

s

s

s

s

s

s

High-end infra-red imaging

X-Ray medical imaging

High-end CCD cameras

Scanners and digital copiers

Test instrumentation

Wireless communication

s

s

s

s

s

s

Single supply voltage: 2.5V

Digital I/O supply voltage: 2.5V/3.3V com-

patible

-90.5dBc SFDR and 73.1dBc SNR at

Fin=10MHz when using external refer-

ences (VINpp=2.5V)

Differential analog input-driving

Built-in reference voltage with external

bias capabilities

Digital output high impedance mode

ORDER CODES

Part Number

TSA1401IF

TSA1401IFT

EVAL1401/AB

Temperature

Range

-40擄C to +85擄C

-40擄C to +85擄C

Package

TQFP48

TQFP48

Evaluation board

Conditioning

Tray

Tape & Reel

Marking

SA1401

SA1401

1) OPTIMWATT(TM) is a ST deposited trademark for products features allowing

optimization of power efficiency at chip/application level.

PIN CONNECTIONS

(top view)

D0 (LSB)

DESCRIPTION

GNDBE

The TSA1401 is a 14-bit, 20MHz sampling

frequency Analog to Digital Converter using deep

submicron CMOS technology combining high

performances

with

very

low

power

consumption.The TSA1401 is based on a pipeline

structure with digital error correction to provide

excellent

static

linearity

and

dynamic

performances.

Typically designed for multi-channel applications

and high-end imaging equipment, where low

consumption is a must, the TSA1401 only

dissipates 85mW at 20Msps when using external

references, 110mW using internal references. Its

power consumption adapts relative to sampling

frequency. Differential signals are applied on the

inputs for optimum performance. The TSA1401

reaches an SFDR of -90.5dBc and an SNR of

73.1dBc at Fin=10MHz when increasing the input

dynamic range to 2.5V by using the voltage

reference, TS431 (1.24V).

A tri-state capability is available on the output

buffers, enabling a Chip Select.The TSA1401 is

available in the industrial temperature range of -

40擄C to +85擄C and in a small 48-lead TQFP

package.

December 2003

VCCBE

VCCBI

AGND

AVCC

AVCC

DFSB

OEB

SRC

NC

index

corner

48 47 46 45 44 43 42 41 40 39 38 37

36 D1

35 D2

34 D3

33 D4

IPOL 1

VREFP 2

VREFM 3

AGND 4

VIN 5

AGND 6

VINB 7

AGND 8

INCM 9

AGND 10

AVCC 11

AVCC 12

13 14 15 16 17 18 19 20 21 22 23 24

DVCC

DGND

NC

DGND

DVCC

DGND

CLK

GNDBE

VCCBE

GNDBI

OR

D13(MSB)

DR

TSA1401

32 D5

31 D6

30 D7

29 D8

28 D9

27 D10

26

D11

25 D12

PACKAGE

7 x 7 mm TQFP48

1/19

1/19

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