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Número de pieza
componentes Descripción
UBA1702T/C1 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
UBA1702T/C1
Line interrupter driver and ringer.
Philips Electronics
UBA1702T/C1 Datasheet PDF : 24 Pages
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Philips Semiconductors
Line interrupter driver and ringer
BLOCK DIAGRAM
Product specification
UBA1702; UBA1702A
handbook, full pagewidth
SDO
SDI
1
2
14 V
4
DPI
28
EHI
VSS
SWITCH
DRIVER
CDO
CLA
25 24
SPI
CDA
SPO
26 5
6
VSS VDD
SENSE
Sref
Sref
LINE CURRENT MANAGEMENT
SPEECH
ZENER PROTECTION
S
ref
R
ref
VDD
MUTE SWITCH
VSS
9
ZPA
10
MSA
8
MSI
19
V
BB
VDD
18
12
RFO
23
RPI
SUPPLY
Vref
V
SS
RINGER FREQUENCY
DETECTION
VDD
V
SS
VDD
Sref
SPO
REFERENCES
V
SS
Rref
RINGER
UBA1702; UBA1702A
UBA1702T; UBA1702AT
VRR
V
SS
VRR
V
SS
VDD
1/2 VDD
VDD
RINGER MELODY INPUT AND PIEZO DRIVER
17
V
SS
7
V
EE
22
ROA
20
ROB
R
ref
RINGER
PROTECTION
R
ref
VSS
RINGER
THRESHOLD
V
RR
VDD
VDD
VOLUME
CONTROL
DIGITAL
-TO-
ANALOG
CONVERTER
V
SS
VDD
V
SS
VDD
V
SS
13
RV0
14
RV1
15
RV2
21 11
RTA
VRR
16
RMI
MBE184
1997 Sep 29
Fig.1 Block diagram.
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