參數(shù)資料
型號: TDA8741
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: satellite sound circuit with noise reduction
中文描述: FM, AUDIO DEMODULATOR, PDIP42
封裝: 0.600 INCH, PLASTIC, SDIP-42
文件頁數(shù): 11/24頁
文件大?。?/td> 436K
代理商: TDA8741
October 1994
11
Philips Semiconductors
Product specification
Satellite sound circuit with noise reduction
TDA8741; TDA8741H
Secondary channels 1 and 2 - PLL FM demodulators
f
CCO1
f
CCO2
f
OS1/2
R
S1,S2
free running frequency PLL1
free running frequency PLL2
lock range of PLLs
series resistance for optimum
frequency response adjustment
PLL output voltage pins 40 and
42 (36 and 38) (RMS value)
spread of PLL output voltage
over lock range
10
0
10.7
10.52
0.68
MHz
MHz
MHz
k
note 3
11.5
2.2
V
CDCL,CDCR(rms)
pins to be left open-circuit
9
mV
V
CDCL,CDCR
±
1
dB
Secondary channels - overall performance of LPF and NR (output selectors in position 1)
output resistance for 75
μ
s
de-emphasis pins 36 and 32 (32
and 28)
R
i
input resistance of output
amplifiers pins 35 and 33
(31 and 29)
V
OL,OR
output voltage level pins 25 and
24 (21 and 20)
UBS
unbalance voltage outputs
pins 25 and 24 (21 and 20)
THD
total harmonic distortion
S/N(A)
signal-to-noise ratio
R
o
output resistance pins 25 and 24
(21 and 20)
MUTE
att
mute attenuation
R
O
1.9
2.3
2.6
k
95
150
200
k
note 4
8
6
4
dBV
note 4
1
+1
dB
note 4
A-weighted; note 4
note 4
72
92
0.1
80
125
0.5
150
%
dB
output selector in
position 6; note 4
note 5
74
dB
α
S/S
crosstalk attenuation between
secondary channels
crosstalk attenuation from main
channel to secondary
DC offset voltage on
attack/recovery capacitors
pins 29, 39 (25, 35)
supply voltage ripple rejection
74
dB
α
M/S
note 6
74
dB
V
offset(DC)
all PLLs locked;
f = 0
14
16
20
mV
SVRR
V
RR
= 100 mV; f
i
= 70 Hz
25
dB
Secondary channels - low-pass filter pins 38 and 30 (34 and 26)
50 kHz frequency response
with respect to 1 kHz
note 7
25
16
9
dB
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
V
RECTL RECTR 1 kHz
)
)
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