TDA3866 Datasheet, PDF (2/16 Pages) NXP Semiconductors – Quasi-split sound processor for all standards

Philips Semiconductors
Quasi-split sound processor for all standards
Preliminary specification
TDA3866
FEATURES
• Quasi-split sound processor for all standards e. g. B/G
(FM sound) and L (AM sound)
• AF2 signal automatically muted (at B/G) by the input
signal level
• AM signal processing for L standard and switching over
the audio signal
• Stereo-matrix correction
• Layout-compatible with TDA3858 (32 pins) and
TDA3857 (20 pins)
• AM output level typically 500 mV at m = 0.54 (+2.5 dB in
comparison to TDA3856)
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
SYMBOL
V_P
I_P
V_{i IF}
V_o
THD
S/N (W)
PARAMETER
supply voltage (pin 21)
supply current
IF input sensitivity (−3 dB)
audio output signal for FM standard B/G (RMS value)
audio output signal for AM standard L (RMS value)
total harmonic distortion
for FM
for AM
weighted signal-to-noise ratio
for FM
for AM
MIN.
4.5
−
−
−
−
TYP.
5
60
70
1
0.5
MAX.
8.8
72
100
−
−
UNIT
V
mA
µV
V
V
−
0.5
−
%
−
1
−
%
−
68
−
dB
−
56
−
dB
ORDERING AND PACKAGE INFORMATION
EXTENDED TYPE
NUMBER
TDA3866
PINS
24
Note
1. SOT234-1; 1997 January 8.
PIN POSITION
shrink DIL
PACKAGE
MATERIAL
plastic
CODE
SOT234⁽¹⁾
January 1992
2