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參數資料
| 型號： | 935028240112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO DEMODULATOR, PDIP32 |
| 封裝： | 0.400 INCH, PLASTIC, SDIP-32 |
| 文件頁數： | 12/19頁 |
| 文件大小： | 187K |
| 代理商： | 935028240112 |
June 1994
2
Philips Semiconductors
Product specication
Quasi-split sound processor for all standards
TDA3858
FEATURES
Quasi-split sound processor for all standards e. g. B/G
(FM sound) and L (AM sound)
Reducing of spurious video signals by tracking function
and AFC for the vision carrier reference circuit;
(recommended for NICAM)
Automatic muting of the AF2 signal (at B/G) by the input
level
AM signal processing for L standard and switching over
the audio signal
Stereo matrix correction
Layout-compatible with TDA3856 (24 pins) and
TDA3857 (20 pins).
GENERAL DESCRIPTION
Separate symmetrical IF inputs for FM or AM sound.
Gain controlled wideband IF amplifier, input select switch.
AGC generation due to peak sync for FM or mean signal
level for AM. Reference amplifier for the regeneration of
the vision carrier. Optimized limiting amplifier for AM
suppression in the regenerated vision carrier signal and
90
° phase shifter.
Intercarrier mixer for FM sound, output with low-pass filter.
Separate signal processing for 5.5 and 5.74 MHz
intercarriers. Wide supply voltage range, only 300 mW
power dissipation at 5 V.
QUICK REFERENCE DATA
ORDERING INFORMATION
Note
1. SOT 232-1; 1996 November 21.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
VP1
supply voltage (pin 27)
4.5
5
8.8
V
VP2
alternative supply voltage (pin 28)
10.8
12
13.2
V
Data at VP1 =5 V
IP
supply current (pin 27)
60
72
mA
Vi IF
IF input sensitivity (
3 dB)
70
100
V
VO (RMS)
audio output signal for FM (B/G)
1
V
VO (RMS)
audio output signal for AM (L)
0.6
V
THD
total harmonic distortion
for FM
0.5
%
for AM
1
%
S/N (W)
weighted signal-to-noise ratio
for FM
68
dB
for AM
56
dB
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN
POSITION
MATERIAL
CODE
TDA3858
32
shrink DIL
plastic
SOT232(1)
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