TDA8741 Просмотр технического описания (PDF) - Philips Electronics
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TDA8741 Datasheet PDF : 24 Pages
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Philips Semiconductors
Satellite sound circuit with noise reduction
Product specification
TDA8741; TDA8741H
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Secondary channels 1 and 2 - PLL FM demodulators
fCCO1
fCCO2
∆fOS1/2
RS1,S2
free running frequency PLL1
free running frequency PLL2
lock range of PLLs
series resistance for optimum
frequency response adjustment
VCDCL,CDCR(rms)
PLL output voltage pins 40 and
42 (36 and 38) (RMS value)
∆VCDCL,CDCR
spread of PLL output voltage
over lock range
−
−
note 3
10
0
pins to be left open-circuit −
−
10.7 −
10.52 −
−
11.5
0.68 2.2
MHz
MHz
MHz
kΩ
9
−
mV
−
±1 dB
Secondary channels - overall performance of LPF and NR (output selectors in position 1)
RO
output resistance for 75 µs
de-emphasis pins 36 and 32 (32
and 28)
1.9 2.3 2.6 kΩ
Ri
input resistance of output
amplifiers pins 35 and 33
(31 and 29)
95 150 200 kΩ
VOL,OR
output voltage level pins 25 and note 4
24 (21 and 20)
−8 −6 −4 dBV
UBS
unbalance voltage outputs
pins 25 and 24 (21 and 20)
note 4
−1 −
+1 dB
THD
total harmonic distortion
note 4
−
0.1 0.5 %
S/N(A)
signal-to-noise ratio
A-weighted; note 4
72 80 −
dB
Ro
output resistance pins 25 and 24 note 4
92 125 150 Ω
(21 and 20)
MUTEatt
mute attenuation
output selector in
position 6; note 4
74 −
−
dB
αS/S
crosstalk attenuation between note 5
−
74 −
dB
secondary channels
αM/S
crosstalk attenuation from main note 6
channel to secondary
−
74 −
dB
Voffset(DC)
DC offset voltage on
attack/recovery capacitors
pins 29, 39 (25, 35)
all PLLs locked; ∆f = 0 14 16 20 mV
SVRR
supply voltage ripple rejection VRR = 100 mV; fi = 70 Hz −
25 −
dB
Secondary channels - low-pass filter pins 38 and 30 (34 and 26)
V--V---R-R--E-E---C-C--T-T--L-L--,-,-R-R--E--E--C-C--T--T-R--R---(-(-5-1-0---k-k-H-H--z--z-)-)-
50 kHz frequency response
with respect to 1 kHz
note 7
−25 −16 −9 dB
October 1994
11
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