LTC1404
TYPICAL APPLICATIONS
LTC1404 Interface to the ADSP2181’s SPORT0 (Frame Sync is Generated from RFS0)
9.6MHz
5V
EXTERNAL CLOCK
1
VCC
CLK 6
+
10µF
0.1µF
UNIPOLAR
INPUT
2
3
AIN
CONV
LTC1404
VREF
DOUT
7
5
+
10µF
0.1µF VSS
GND
8
4
ADSP2181
SCLKO
RFSO
DR0
1404 TA05a
Logic Analyzer Waveforms Show 1.67µs Throughput Rate (Input Voltage = 1.604V, Output Code = 0110 0100 0100 = 160410)
NOTE: WITHOUT THE EXTERNAL CLOCKING SIGNAL, THE ADSP2181 SCLK0 CAN BE PROGRAMMED TO RUN AT 8.3MHz
1404 TA05b
Data from the LTC1404 (Normal Mode)
X RDY D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
XX
1404 TA05c
Data Stored in the ADSP2181’s Memory (Normal Mode, SLEN = D)
0 0 0 RDY D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
1404 TA05d
20
1404fa