TDA8349 データシートの表示（PDF） - Philips Electronics
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TDA8349 Datasheet PDF : 17 Pages
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Philips Semiconductors
Multistandard IF amplifier and
demodulator
Product specification
TDA8349A
GENERAL DESCRIPTION
The TDA8349A is a multistandard IF amplifier and demodulator with AGC and AFC functions for television receivers.
The device has a video recognition circuit and a video switch for internal or external video for full SCART applications.
FEATURES
• Full-range gain-controlled wideband IF amplifier up to 60 MHz
• Wide-band video amplifier with good linearity and a class AB output stage to ensure a very low output impedance
• Supply independent video output level
• Small second harmonic IF output
• AGC circuit which operates on top sync level (negative modulation) or on white level (positive modulation) or on top
level (MAC) with reduced sensitivity for high sound carriers
• AFC circuit with an internal 90° phase shift circuit, a sample-and-hold circuit for negatively modulated signals to reduce
video dependent AFC information and an analog or digital output
• Video recognition possibility based on horizontal pulse duty cycles
• Video switch for selection of internal or external video signals
• Wide supply voltage range and ripple rejection
• Requires few external components
• Tuner AGC output for npn and pnp tuners
QUICK REFERENCE DATA
SYMBOL
V14-17
I14
V1-2(RMS)
Gv
V11-17(p-p)
S/N
V8-17(p-p)
PARAMETER
supply voltage (pin 14)
supply current (pin 14)
IF input sensitivity (RMS value)
IF gain control range
video output voltage (peak-
to-peak value)
signal-to-noise ratio
AFC output voltage swing
(peak-to-peak value)
CONDITIONS
Vi = 10 mV
MIN.
10.2
40
−
66
1.7
TYP.
12
55
50
72
1.9
MAX.
13.2
65
80
−
2.1
UNIT
V
mA
µV
dB
V
Vi = 10 mV
54
61
−
dB
10
−
11
V
ORDERING AND PACKAGE INFORMATION
EXTENDED
TYPE NUMBER
TDA8349A
PINS
20
Note
1. SOT146-1; 1996 November 29.
PIN POSITION
DIL
PACKAGE
MATERIAL
plastic
CODE
SOT146(1)
February 1991
2
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