Tk 14521M Tl (Xa0515) - Alinco DJ-493 Service Manual

4) TK 14521M TL (XA0515)

IF System
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Ta = 25°C, Vcc = 3V, fin = 10.7MHz, fm = 1kHz, Mod = ±3kHz
Parameter
Supply Current
Mixer + IF part
Limiting Sensitivity
Output Voltage
Distortion
S/N
AM Rejection Ratio
Mixer Coversion Gain
Mixer 3rd Intercept point
Mixer Input Impedance
Mixer Output Impedance
Limiter Input Impedance
RSSI part
RSSI Output Current 1
RSSI Output Current 2
RSSI Output Current 3
Squelch BPF part
Center Frequency 1
Center Frequency 2
Center Frequency 3
Squelch Output Current
Squelch ON Voltage
Squelch OFF Voltage
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Ratings
Symbol
Min Typical
Icc 4.3
Limit -94 -100
Vo 200 300
THD
S/N 40
AMRR 30
G 20
m
ICP -10
R 2.8 3.6
im
R 1.2
om
R 1.2
ifin
I 1 41
rssi
I RSSI 2 22
I 3 10
rssi
fCT 1 10.5 15.0
fCT 2 21.0 30.0
fCT 3 38.5 55.0
Iso 6
0.47
VSQ(ON) 0.40
VSQ(OFF) 0.50 0.57
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DC
Unit
Max
No signal
7.0 9.8 mA
-3.0dB point
-106 dBm
400 mVrms
0.8 2.8 %
46 52 dB
40 dB AM 30% mod
dB
26 32
dBm
-3
K n
DC Test
4.4
1.5 1.9 K n DC Test
K n
DC Test
1.5 1.9
-30dBm is input.
60 88
ma
(JA -60dBm is input.
40 59
-100dBm is input.
17 25
ma
kHz Center frequency setting R -«
21.0
Center frequency setting R*36kO
39.0 kHz
Center frequency setting R=6.8kn
71.5 kHz
Center frequency setting R«36kn
10 18
ma
25mVrms is input (Pin11)
0.54 V DC voiiage is input to pinl 3.
DC voltage is input to pinl 3.
0.64 V
Condition