TLC2551 Datasheet, PDF (6/23 Pages) Texas Instruments – 5 V, LOW POWER, 12-BIT, 400 KSPS, SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN

TLC2551, TLC2552, TLC2555
5 V, LOW POWER, 12-BIT, 400 KSPS,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN
SLAS276 –MARCH 2000
timing diagrams/conversion cycles
DSP Interface
123456
12 13 14 15 16
1
SCLK
CS
FS
SDO
t(sample)
tc
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _OD11
OD10 OD9 OD8 OD7 OD6
OD0
t(powerdown)
Figure 2. TLC2551 DSP Mode/FS Active
µP Interface
SCLK
CS
FS
SDO
1234567
12 13 14 15 16
1
t(sample)
tc
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{OD11 OD10 OD9 OD8 OD7 OD6 OD5}
OD0
t(powerdown)
Figure 3. TLC2551 Microcontroller Mode/(SPI, CPOL = 0, CPHA = 1)
SCLK
CS/FS
SDO
12345
1 4 12
16
<8 SCLKs, MUX
Resets to AIN0
t(sample)
ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tc
Figure 4. TLC2552 Timing
1 4 12
16
>8 SCLKs, MUX Toggles to AIN1
t(powerdown)
AIN0 Result
OD11
t(sample)
ÎÎÎÎÎÎ ^tc
OD0
6
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