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| 型號(hào)： | TDA9809M-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 接收器 |
| 英文描述： | FM, AUDIO DEMODULATOR, PDSO20 |
| 封裝： | PLASTIC, SOT-339, SSOP-20 |
| 文件頁(yè)數(shù)： | 36/40頁(yè) |
| 文件大小： | 186K |
| 代理商： | TDA9809M-T |
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1998 Jan 08
5
Philips Semiconductors
Preliminary specication
Single standard multimedia IF-PLL and FM
radio demodulator
TDA9809M
PINNING
SYMBOL
PIN
DESCRIPTION
ViVIF1
1
VIF differential input signal voltage 1
ViVIF2
2
VIF differential input signal voltage 2
LP0
3
logic port 0
ViRIF
4
RIF input
CVAGC
5
VIF AGC capacitor
TPLL
6
PLL loop lter
VoAF
7
audio output
LP2
8
logic port 2 and soft mute threshold
adjustment
CDEC
9
decoupling capacitor
Vo(int)
10
intercarrier output voltage
ViFM
11
sound intercarrier input voltage
TAGC
12
TV/radio tuner AGC output
Vo(vid)
13
composite video output voltage
AFC
14
AFC/RIF level output
VCO1
15
VCO1 resonance circuit
VCO2
16
VCO2 resonance circuit
GND
17
ground
CERRES
18
ceramic resonator 10.7 MHz
VP
19
supply voltage
TADJ
20
tuner AGC takeover point adjustment
Fig.2 Pin configuration.
handbook, halfpage
ViVIF1
ViVIF2
LP0
ViRIF
CVAGC
TPLL
VoAF
LP2
CDEC
Vo(int)
TADJ
VP
CERRES
GND
VCO1
AFC
VCO2
Vo(vid)
TAGC
ViFM
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
TDA9809M
MHA958
FUNCTIONAL DESCRIPTION
The TDA9809M is comprised of the functional blocks
shown in Fig.1:
Vision IF amplifier and AGC detector
Tuner (TV/radio) and VIF AGC
Frequency Phase-Locked Loop (FPLL) detector
VCO, Travelling Wave Divider (TWD) and TV AFC
Video demodulator and amplifier
Intercarrier mixer
RIF amplifier and AGC detector
FM-PLL demodulator, level detector and radio AFC
Audio Frequency (AF) signal processing
Internal voltage stabilizer
Logic.
Vision IF amplier and AGC detector
The vision IF amplifier contains three AC-coupled
differential amplifier stages. Each differential stage
includes a feedback network controlled by emitter
degeneration.
The AGC detector generates the required VIF gain control
voltage for constant video output by charging/discharging
the AGC capacitor. The sync level of the video signal is
therefore detected for negative video modulation.
Tuner (TV/radio) and VIF AGC
For TV operation, the AGC capacitor voltage is converted
to an internal IF control signal and then fed to the tuner
AGC to generate the tuner AGC output current at
pin TAGC (open-collector output). The tuner AGC
takeover point can be adjusted at pin TADJ. This allows
the tuner to be matched to the SAW filter in order to
achieve the optimum IF input level.
For FM radio operation, an AGC detector is provided to
obtain some adjacent channel protection.
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| TDA9810 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL with QSS-IF and AM demodulator |
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| TDA9811 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL with QSS-IF and AM demodulator |
| TDA9812 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL and FM-PLL/AM demodulator |
| TDA9812T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard VIF-PLL and FM-PLL/AM demodulator |
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