TLC3574, TLC3578, TLC2574, TLC2578

5V ANALOG, 3/5V DIGITAL, 14/12BIT, 200KSPS, 4/8CHANNEL

SERIAL ANALOGTODIGITAL CONVERTERS WITH ±10V INPUTS

SLAS262C − OCTOBER 2000 − REVISED MAY 2003

25

POST OFFICE BOX 655303

operation cycle timing

4 SCLKs

4-bit Command

12-bit CFR Data (Optional)

12 SCLKs for Short

44 SCLKs for Long

4 SCLKs

12 SCLKs for Short

44 SCLKs for Long

Delay From

SDI

2-bit Don’t Care

14-bit Data (Previous Conversion)

SDO

SDI

SDO

15 ns

15 nS

Active FS

CSTAR (For Extended Sampling) occurs at

or after the rising edge of eleventh SCLK

CSTAR (For Extended Sampling) occurs at

or after the rising edge of eleventh SCLK

CS Initiates

Operation

FS Initiates

Operation

18 OSC for Internal OSC‡

72 SCLK for External Clock

18 OSC for Internal OSC‡

72 SCLK for External Clock

4-bit Command

12-bit CFR Data (Optional)

2-bit Don’t Care

Active CS (FS Is Tied to High)

Active CS (CS Can Be Tied to Low)

14-bit Data (Previous Conversion)

§

§

CS

Low to FS High

† Non JEDEC terms used.

‡ 18 internal OSC or 72 SCLK for TLC3574 and TLC3578,

13 internal OSC or 52 SCLK for TLC2574 and TLC2578.

§ For TLC3574 and TLC3578, 14-bits are result of previous conversion, last two bits are don’t care. For TLC2574 and TLC2578, 12-bits are result

of previous conversion, last four bits are don’t care.