Preliminary
Features
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HT9011
FM IF Detector
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Operating voltage: 1.1V~3.5V
Constant power supply voltage can be gen-
erated by externally adding a transistor:
V
REG
=1.0V typ.
Alarm function sensitivity: V
ALM
=1.1V typ.
Low current consumption: I
CCQ
=1.1mA typ.
Built-in 2nd stage mixer for double conver-
sion method
Mixer operating frequency: 10MHz~50MHz
Built-in low-pass filter and waveform shap-
ing circuit enable the extraction of FSK sig-
nals from voice signals
Built-in battery-saving function for longer
battery life time
High transmission rate: 1200 bps
20-pin SSOP package (0.65mm Pitch)
General Description
The HT9011 is designed for FM communication
system devices. It combines a paging system,
mixer, IF limiter, Quadrature detector, opera-
tion amplifier, comparator and more. The
HT9011 could provide the customer¢s PAGER
system with total solution along with Holtek¢s
POCSAG Pager Controller series products.
Block Diagram
M IX I G N D
R E G O
R E G C
A L M
F S K O
C H G
B S
L P F O
L P F I
R E G .
M ix e r
A L A R M
F S K
C O M P .
Q u ic k
C h a rg e
A M P
IF A m p
O S C
Q u a d D e t
O S C I O S C O
M IX O
V C C
IF IN
D E C
F S K R
IF O
Q U A D
A F O
1
March 1, 2000
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
