20

LTC1401

© LINEAR TECHNOLOGY CORPORATION 1998

1401f LT/TP 0598 4K • PRINTED IN USA

Interface to the TMS320C50’s TDM Serial Port (Frame Sync is Generated from TFSX)

RELATED PARTS

12-Bit Parallel Output ADCs

PART NUMBER

DESCRIPTION

COMMENTS

LTC1273/LTC1275/LTC1276

Complete 5V Sampling 12-Bit ADCs with 70dB SINAD at Niquist

Lower Power and Cost Effective for

LTC1274/LTC1277

Low Power 12-Bit ADCs with Nap and Sleep Mode Shutdown

LTC1278/LTC1279

High Speed Sampling 12-Bit ADCs with Shutdown

Cost Effective 12-Bit ADCs with Convert Start Input

LTC1282

Complete 3V 12-Bit ADCs with 12mW Power Dissipation

Fully Specified for 3V Powered Applications,

LTC1409

Low Power 12-Bit, 800ksps Sampling ADC

Best Dynamic Performance

LTC1410

12-Bit, 1.25Msps Sampling ADC with Shutdown

Best Dynamic Performance, THD = – 84dB and

SINAD = 71dB at Nyquist

12-Bit Serial Output ADCs

PART NUMBER

SAMPLE RATE

POWER DISSIPATION

DESCRIPTION

LTC1285/LTC1288

3V

7.5/6.6ksps

0.48mW

3V, One or Two Input, Micropower, SO-8

LTC1286/LTC1298

5V

12.5/11.1ksps

1.25mV

One or Two Input, Micropower, SO-8

LTC1290

5/

±5V

50ksps

30mW

8 Input, Full-Duplex Serial I/O

LTC1296

5/

±5V

46.5ksps

30mW

8 Input, Half-Duplex Serial I/O, Power Shutdown Output

LTC1400

5/

±5V

400ksps

75mW

Complete 12-Bit, 400ksps, SO-8 ADC with Shutdown

LTC1404

5/

±5V

600ksps

75mW

Complete 12-Bit, 600ksps, SO-8 ADC with Shutdown

CLK

CONV

GND

TCLKX

TCLKR

TFSX

TFSR

TDR

LTC1401

TMS320C50

+

10

µF

0.1

µF

UNIPOLAR

INPUT

+

10

µF

0.1

µF

3V

LTC1401 • TA04a

1

8

2

3

4

6

7

5

SHDN

20MHz

5V

QC

CLK

A B C D

CLR LD

P T

74HC161

2.5MHz EXTERNAL CLOCK

LTC1401 Interface to the ADSP2181’s SPORT0 (Frame Sync is Generated from RFS)

CLK

CONV

GND

SCLKO

RFS

DR0

LTC1401

ADSP2181

UNIPOLAR

INPUT

+

10

µF

0.1

µF

+

10

µF

3V

0.1

µF

1

2

3

6

7

5

LTC1401 • TA05a

8

SHDN

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417