LTC1404(RevA) View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC1404
(Rev.:RevA)

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

Linear Technology 

LTC1404

TYPICAL APPLICATIONS

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

7.8MHz

5V

EXTERNAL CLOCK

1 VCC

CLK 6

+

10µF

0.1µF

UNIPOLAR

INPUT

2 AIN

CONV

3

LTC1404

VREF

DOUT

7

5

+

10µF

0.1µF VSS

GND

8

4

TMS320C50-40MHZ

TCLKX

TCLKR

TFSX

TFSR

TDR

1404 TA04a

Logic Analyzer Waveforms Show 2.05µs Throughput Rate (Input Voltage = 1.606V, Output Code = 0110 0100 0110 = 160610)

NOTE: THE TMS320C50-40MHz HAS A LIMITED SERIAL PORT CLOCK SPEED OF 7.8MHz. TO ALLOW THE LTC1404 TO RUN AT

ITS MAXIMUM SPEED OF 9.6MHz, THE TMS320C50-57 OR TMS320C50-80MHz IS NEEDED

1404T A04B

Data from the LTC1404 Loaded into the TMS320C50’s TRCV Register

X RDY D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X

1404 TA04c

Data Stored in the TMS320C50’s Memory (in Right Justified Format)

0 0 0 RDY D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

1404 TA04d

18

1404fa

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