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| TLC1542_13 Datasheet, PDF (18/33 Pages) Texas Instruments – 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 ANALOG INPUTS | |||
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TLC1542I, TLC1542M, TLC1542Q
TLC1542C, TLC1543C, TLC1543I, TLC1543Q
SLAS052G â MARCH 1992 â REVISED JANUARY 2006
APPLICATION INFORMATION
1111111111
1111111110
See Notes A and B
1111111101
www.ti.com
1023
1022
1021
VFS
1000000001
1000000000
0111111111
VZT =VZS + 1/2 LSB
VFT = VFS â 1/2 LSB
513
512
511
VZS
0000000010
2
0000000001
1
0000000000
0
0.0048 0.0096
2.4528 2.4576 2.4624
0
4.9056 4.9104 4.9152
VI â Analog Input Voltage â V
A. This curve is based on the assumption that Vref+ and Vref- have been adjusted so that the voltage at the transition
from digital 0 to 1 (VZT) is 0.0024 V and the transition to full scale (VFT) is 4.908 V. 1 LSB = 4.8 mV.
B. The full-scale value (VFS) is the step whose nominal midstep value has the highest absolute value. The zero-scale
value (VZS) is the step whose nominal midstep value equals zero.
Figure 15. Ideal Conversion Characteristics
Analog
Inputs
To Source
Ground
TLC1542/43
1
15
A0
2
CS 18
A1
I/O CLOCK
3
A2
17
ADDRESS
4
A3
5
16
A4
DATA OUT
6
A5
7
19
EOC
A6
8
A7
9
A8
11
A9
12
14
REF+
13
REFâ
A10
GND
10
Processor
5-V DC Regulator
Figure 16. Serial Interface
Control
Circuit
18
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