Datasheet


SLAS105D − JANUARY 1995 − REVISED APRIL 2004
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14
PRINCIPLES OF OPERATION
R1
320 Ω NOM
R
ref
270 Ω NOM
R2
80 Ω NOM
V
DDA
5 V (Analog)
REFTS
REFT
REFB
REFBS
AGND
TLC5540
16
17
22
21
23
18
0.1 µF
2.28 V dc
0 V dc
Figure 15. External Connections Using the Internal Bias Two Option
functional operation
Table 2 shows the TLC5540 functions.
Table 2. Functional Operation
INPUT SIGNAL
VOLTAGE
STEP
DIGITAL OUTPUT CODE
INPUT SIGNAL
VOLTAGE
STEP
MSB LSB
V
ref(T)
255 1 1 1 1 1 1 1 1
•
• • •••••••
• • • •••••••
• 128 1 0000000
• 127 0 1111111
• • • •••••••
• • • •••••••
V
ref(B)
0 0 0 0 0 0 0 0 0