TK14551V Datasheet, PDF (1/32 Pages) TOKO, Inc – FM IF DETECTOR/AMPLIFIER

TK14551V
FM IF DETECTOR/AMPLIFIER
FEATURES
s IF Input Frequency ~90 MHz (TYP)
s Balanced Input (IF)
s Includes Dual High Speed RSSI Outputs. One is for
ASK demodulation, another one is for carrier
sensing.
s RSSI outputs are accurate with stable temperature
characteristic and include buffer amplifiers.
s High Speed RSSI Comparator for Carrier Sensing
s HIgh Speed Data Comparator (~2 Mbps)
s Wide Band Demodulator (~1 MHz)
s Battery Save Function
s Low Voltage Operation: 3.0 ~ 5.5 V
s Very Small Package (TSSOP-24)
DESCRIPTION
The TK14551V is a wide band IF IC capable of operating
up to 90 MHz. It includes an FM demodulator, RSSI, RSSI
comparator and data comparator. These functions can
perform high-speed operations. The TK14551V has a
unique function that allows establishing the demodulation
characteristics by changing the external RC time constant,
and not changing the phase shifter constant. The RSSI
output is individually trimmed, resulting in excellent
accuracy, good linearity, and stable temperature
characteristics. Because the TK14551V includes a dual
high-speed RSSI output, it is possible to demodulate AM
simply and to sense the carrier level at the same time.
APPLICATIONS
s Wide Band FSK Demodulation
s Wide Band FM Demodulation
s Video Signal Demodulation
s Wide Band ASK Demodulation
TK14551
IF DECOUPLE
IF DECOUPLE
IF OUTPUT
FM DEMODULATOR INPUT
IF VCC
GND
VCC
FM DEMODULATOR AMP INPUT
FM DEMODULATOR AMP OUTPUT
RSSI BUFFERED OUTPUT-2
DATA COMP INPUT (-)
DATA COMP INPUT (+)
BLOCK DIAGRAM
IF INPUT (-)
23 IF INPUT (+)
22 IF GND
21 BATTERY SAVE
20 RSSI COMP BIAS
19 RSSI OUTPUT-1
18 RSSI OUTPUT-2
17 RSSI BUFFERED OUTPUT-1
16 RSSI COMP OUTPUT
15 RSSI COMP GND
14 DATA COMP GND
13 DATA COMP OUTPUT
Therefore, the TK14551V is suitable for high-speed data
communication and can be used for various applications.
The TK14551V is available in the very small TSSOP-24
surface mount package.
IF
AMP
BIAS
RSSI
RSSI
Comparator
ORDERING INFORMATION
TK14551V
Tape/Reel Code
Demodulator
VCC
VCC
BUFF2
TAPE/REEL CODE
TL: Tape Left
January 2000 TOKO, Inc.
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