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參數(shù)資料
| 型號： | TDA8741H-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO DEMODULATOR, PQFP44 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 317K |
| 代理商： | TDA8741H-T |
October 1994
10
Philips Semiconductors
Product specication
Satellite sound circuit with noise reduction
TDA8741; TDA8741H
AC CHARACTERISTICS
All voltages referenced to ground at pins 9 and 34 (4 and 30). Measured in test circuit Fig.4; VP = 12 V; Tamb =25 °C;
fMOD = 1 kHz; fOM = 6.5 MHz; fM = 46 kHz; fS1 = fS2 = 27 kHz (reference levels); fOS1 = 10.7 MHz;
fOS2 = 10.52 MHz; HF level at pin 18 (14): 40 mV (RMS); HF level at pins 8 and 16 (3 and 11): 20 mV (RMS);
MCS = logic 0 [V7 (V2) = 0 V]; SCD = logic 0 [V11 (V6) = 0 V]; unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Main channel - HF input pin 18 (14) and limiter
VIN3(rms)
input sensitivity (RMS value)
S/N(A) = 40 dB
1.0
2.0
mV
VIN3(rms)
input signal level (RMS value)
200
mV
RIN3
input resistance
15
k
Main channel - PLL FM demodulator and DC decoupling amplier
fCCO
free-running frequency
6.5
MHz
MCS = logic 1
10.7
MHz
fOM
lock range of PLL
note 1
5.5
7.5
MHz
MCS = logic 1; note 1
10.0
11.5
MHz
RCDM
output resistance for 50
s
de-emphasis pin 20 (16)
1.24
1.5
1.7
k
VCDM
output voltage pin 20 (16)
18.5 16.0 14.5 dBV
VCDM
spread of PLL output voltage
over lock range pin 20 (16)
±1dB
RCCM
input resistance of output
amplier pin 21 (17)
95
150
200
k
Main channel - overall performance (output selector in position 4)
VOM,OR,OL
output voltage pins 23, 24 and
25 (19, 20 and 21)
all PLLs locked
9
6
4
dBV
THD
total harmonic distortion
all PLLs locked
0.1
0.5
%
S/N(A)
signal-to-noise ratio
A-weighted;
all PLLs locked
62
70
dB
15 kHz frequency response
with respect to 1 kHz pin 23 (19)
no de-emphasis
connected
0.5
0
+0.5
dB
ROM,OR,OL
output resistance pins 23, 24
and 25 (19, 20 and 21)
92
125
150
α
S/M
crosstalk attenuation from
secondary channels to main
note 2
74
dB
MUTEatt
mute attenuation
output selector in
position 7
74
dB
SVRR
supply voltage ripple rejection
VRR = 100 mV; fi =70Hz
35
dB
Secondary channels 1 and 2 - HF inputs pins 8 and 16 (3 and 11) and limiters
VIN1,IN2(rms)
input sensitivity (RMS value)
S/N(A) = 40 dB
0.8
1.5
mV
Vi(rms)
input signal level (RMS value)
200
mV
RIN1,IN2
input resistance
280
330
380
V
OM 15 kHz
()
V
OM 1 kHz
()
-------------------------------
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| TDA8741NB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Sound Circuit |
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