Pin No. Symbol
Typical pin
voltage (V)
DC AC
12 VEEA –3.3 V
13 VCCA 0 V
14 VEED –3.3 V
15 VCCD 0 V
16
NC
17
18 Q
–0.9 V
to
–1.7 V
19 Q
–0.9 V
to
–1.7 V
20 VCCDA 0 V
21 SD
–0.9 V
to
–1.7 V
22 SD
–0.9 V
to
–1.7 V
23 VCCDA 0 V
24 VCCD 0 V
25
26 NC
27
CXB1572Q
Equivalent circuit
Description
Negative power supply for
analog block.
Positive power supply for analog
block.
Negative power supply for digital
block.
Positive power supply for digital
block.
No connected.
VCCDA
19
18
VEED
VCCDA
Data signal output.
Terminate this pin in 50 Ω at
VTT = –2 V.
Positive power supply for output
buffer.
21
22
VEED
Alarm signal output.
Terminate this pin in 50 Ω at
VTT = –2 V.
Positive power supply for digital
block.
Positive power supply for digital
block.
No connected.
—4—