Harman Kardon HK 3370, Service Manual

Page: 101 / 123

Operating Characteristics
at Ta=25°C, V
CC
=8.5V, See Test Circuit.
Parameter Symbol Conditions
Ratings
min typ max
Unit
[AM : fc=1MHz, fm=1kHz]
Quiescent current Icco No input 22 30 mA
Detection output V
O
1 V
IN
=20dBµ, 30% mod. 30 60 110 mV
V
O
2 V
IN
=80dBµ, 30% mod. 90 150 210 mV
Signal to noise ratio S/N1 V
IN
=20dBµ 15 19 dB
S/N2 V
IN
=80dBµ 49 54 dB
Total harmonic distortion THD1 V
IN
=80dBµ, 30% mod. 0.3 1.0 %
THD2 V
IN
=107dBµ, 30% mod. 0.3 1.0 %
Signal meter output V
SM
1 No input 0 0 0.2 V
V
SM
2 V
IN
=80dBµ 1.8 2.8 3.5 V
LED drive sensitivity LED-ON I
LED
=1mA 13 23 33 dBm
Local OSC buffer output V
OSC
fosc=1.45MHz 220 280 340 mV
IF buffer output V
IF
V
IN
=20dBµ 120 180 250 mV
[FM : fc=10.7MHz, fm=1kHz]
Quiescent current Icco No input 29 40 mA
Input limiting sensitivity
–
3dBL.S. 3dB down, 100% mod. 31 37 dBµ
Demodulation output V
O
V
IN
=100dBµ, 100% mod. 270 390 540 mV
S/N ratio S/N V
IN
=100dBµ 78 84 dB
Total harmonic distortion THD V
IN
=100dBµ, 100% mod. 0.03 0.3 %
Signal meter output V
SM
1 No input 0 0 0.2 V
V
SM
2 V
IN
=100dBµ 1.7 2.3 3.1 V
LED drive sensitivity LED-ON I
LED
=1mA 46 61 76 dBµ
LED drive bandwidth LED-BW V
IN
=100dBµ, I
LED
=1mA 70 105 140 kHz
AM rejection ratio AMR V
IN
=100dBµ, 100% mod. 45 58 dB
AM-1kHz, 30% mod.
IF buffer output V
IF
V
IN
=50dBµ 110 160 230 mV
Equivalent Circuit Block Diagram
LA1266
hk3370/hk3470 harman/kardon
101