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參數(shù)資料
| 型號(hào)： | TDA4504 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Small signal combination for multistandard colour TV |
| 中文描述： | 為多標(biāo)準(zhǔn)彩色電視小信號(hào)組合 |
| 文件頁數(shù)： | 2/26頁 |
| 文件大?。?/td> | 190K |
| 代理商： | TDA4504 |
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February 1992
2
Philips Semiconductors
Product specification
Small signal combination for multistandard colour TV
TDA4504B
FEATURES
Gain controlled vision IF amplifier
Synchronous demodulator for negative and positive
demodulation
AGC detector operating on peak sync amplitude for
negative demodulation and on peak white level for
positive demodulation
Tuner AGC
AFC circuit with two control polarities and on/off-switch
Video preamplifier
Video switch to select either the internal video signal or
an external video signal
Horizontal oscillator and synchronization circuit with two
control loops
Vertical synchronization (divider system), ramp
generator and driver with automatic amplitude
adjustment for 50 and 60 Hz
Transmitter identification (mute)
Sandcastle pulse generation
VCR/auto VCR switch
Start-up circuit
Vertical guard
GENERAL DESCRIPTION
Having the capability to demodulate IF signals with either
positive or negative-going video information, the
TDA4504B (Fig.1) is contained within a 32 pin
encapsulation. It includes a three-stage vision IF amplifier,
mute circuit, AFC and AGC circuitry, fully synchronised
horizontal and vertical timebases with drive circuits and
integral three-level sandcastle pulse generator.
A functional colour tv receiver can thus be realized with the
addition of a tuner, audio demodulator and amplifier,
chroma decoder and respective line and field deflection
circuitry.
ORDERING INFORMATION
Note
1.
SOT201-1; 1996 November 29
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
SOT201
(1)
TDA4504B
32
DIL
plastic
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