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TDA3856 データシート(PDF) 2 Page - NXP Semiconductors

部品番号 TDA3856
部品情報  Quasi-split sound processor for all standards
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メーカー  PHILIPS [NXP Semiconductors]
ホームページ  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA3856 データシート(HTML) 2 Page - NXP Semiconductors

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June 1994
2
Philips Semiconductors
Product specification
Quasi-split sound processor for all standards
TDA3856
FEATURES
• Quasi-split sound processor for all standards e. g. B/G (FM sound) and L (AM sound)
• 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
• Layout-compatible with TDA3858 (32 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.
SOT234-1; 1996 November 28.
2.
SOT137-1; 1996 November 28.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
VP
supply voltage (pin 21)
4.5
5
8.8
V
IP
supply current
60
72
mA
Vi IF
IF input sensitivity (
−3 dB)
70
100
µV
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
TDA3856
24
shrink DIL
plastic
SOT234(1)
TDA3856T
24
SO
plastic
SOT137(2)


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