HT9032 Ver la hoja de datos (PDF) - Holtek Semiconductor
Número de pieza
componentes Descripción
Fabricante
HT9032 Datasheet PDF : 8 Pages
| |||
HT9032
Normally, the PDWN pin and the RTIME pin control the
operation mode of the HT9032. When both pins are
HIGH, the HT9032 is set at the power down mode, con-
suming less than 1mA of supply current. When a valid
power ring arrives, the RTIME pin will be driven below
VT- and the portions of the part involved in the ring signal
analysis are enabled. This is partial power up mode,
consuming approximately 1.9mA typically. Once the
PDWN pin is below VT-, the part will be fully powered up,
and ready to receive FSK. During this mode, the device
current will increase to approximately 3.2mA (typ). The
state of the RTIME pin is now a ²don¢t care² as far as the
part is concerned. After the FSK message has been re-
ceived, the PDWN pin can be allowed to return to VDD
and the part will return to the power down mode.
Application Circuits
Application circuit 1
T IP
0 .2 m .
~
~
0 .2 m .
R IN G
0 .0 1 m . 2 0 0 k W
470kW
0 .0 1 m . 2 0 0 k W
18kW
15kW
H T1050
9V
T IP
VDD
R IN G
DOUT
PDW N
X1
VSS
X2
H T9032D
V DD
0 .1 m .
mC
3 .5 8 M H z
10M W
30p.
30p.
Application circuit 2
T IP
0 .2 m .
~
~
0 .2 m .
R IN G
0 .0 1 m . 2 0 0 k W
470kW
0 .0 1 m . 2 0 0 k W
18kW
V DD
15kW
270kW
0 .2 m .
V DD
H T1050
9V
0 .1 m .
T IP
R IN G
R D ET1
R D ET2
R T IM E
PDW N
VSS
VDD
D O U TC
DOUT
CDET
RDET
X1
X2
H T9032C
20kW 20kW
mC
30p.
3 .5 8 M H z
10M W
30p.
Rev. 1.30
6
November 19, 2001
Share Link: 