Datasheet

TLC1514, TLC1518
5-V, 10-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS252 – DECEMBER 1999
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Charge
Redistribution
DAC
Control
Logic
_
+
REFM
Ain
ADC Code
Figure 1. Simplified Model of the Successive-Approximation System
serial interface
INPUT DATA FORMAT
MSB LSB
D15–D12 D11–D0
Command Configuration data field
Input data is binary. All trailing blanks can be filled with zeros.
OUTPUT DATA FORMAT READ CFR
MSB LSB
D15–D12 D11–D0
Don’t care Register content
OUTPUT DATA FORMAT CONVERSION/READ FIFO
MSB LSB
D15–D6 D5–D0
Conversion result Don’t care
The output data format is either binary (unipolar straight binary) or 2s complement.
binary
Zero scale code = 000h, Vcode = VREFM
Full scale code = 3FFh, Vcode = VREFP – 1 LSB
2s complement
Minus full scale code = 200h, Vcode = VREFM
Full scale code = 1FFh, Vcode = VREFP – 1 LSB