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參數(shù)資料
| 型號： | TDA9818 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Single/Multistandard VIF/SIF-PLL and FM-PLL/AM demodulator(單一/多標(biāo)準(zhǔn)的VIF/SIF-PLL and FM-PLL/AM解調(diào)器) |
| 中文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封裝： | 0.400 INCH, PLASTIC, SOT-234-1, SDIP-24 |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 163K |
| 代理商： | TDA9818 |
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1997 May 12
17
Philips Semiconductors
Preliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
TDA9817; TDA9818
Notes to the characteristics
1.
Values of video and sound parameters are decreased at V
P
= 4.5 V.
2.
This parameter is not tested during production and is only given as an application information for designing the
television receiver.
3.
Loop bandwidth BL = 70 kHz (natural frequency f
n
= 12 kHz; damping factor d
≈
3; calculated with sync level within
gain control range). Resonance circuit of VCO: Q
0
> 50; C
ext
= 8.2 pF
±
0.25 pF; C
int
≈
8.5 pF (loop voltage
approximately 2.7 V).
4.
Temperature coefficient of external LC-circuit is equal to zero.
5.
V
i(IF)(rms)
= 10 mV;
f = 1 MHz (VCO frequency offset related to picture carrier frequency); white picture
video modulation.
6.
V
i IF
signal for nominal video signal.
7.
The leakage current of the AGC capacitor should not exceed 1
μ
A at B/G standard respectively 10 nA current at
L standard. Larger currents will increase the tilt.
8.
S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 16). B = 5 MHz weighted
in accordance with “CCIR 567”
9.
The intermodulation figures are defined:
V
at 4.4 MHz
V
0
at 1.1 MHz
V
at 4.4 MHz
0
at 3.3 MHz
;
α
1.1
value at 1.1 MHz referenced to black/white signal;
;
α
3.3
value at 3.3 MHz referenced to colour carrier.
10. Measurements taken with SAW filter K3953 (sound carrier suppression: 40 dB); loop bandwidth BL = 70 kHz:
a) Modulation VSB; sound carrier
off
; f
video
> 0.5 MHz.
b) Sound carrier
on
; SIF SAW filter K9453; f
video
= 10 kHz to 10 MHz.
11. Response speed valid for a VIF input level range of 200
μ
V up to 70 mV.
12. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is
given in Fig.7. The AFC-steepness can be changed by the resistors at pin 17.
13. Depending on the ratio
C/C
0
of the LC resonant circuit of VCO (Q
0
> 50; see note 3; C
0
= C
int
+ C
ext
).
14. Source impedance: 2.3 k
in parallel to 12 pF (SAW filter); f
IF
= 38.9 MHz.
15. Without using an SIF SAW filter the mixer can be switched to intercarrier mode by connecting pin 23 and/or pin 24
to ground. In this mode the SIF passes the VIF SAW filter and IF intercarrier levels are depending on the sound shelf
of the VIF SAW filter. The intercarrier output signal at pin 12 can be calculated by the following formula taking into
account the video output signal at pin 16 (V
o(video)(p-p)
= 1.1 V typical) as a reference:
V
×
=
with
= correction term for RMS value,
= sound-to-picture carrier ratio at VIF input (pins 1 and 2) in dB,
6 dB = correction term of internal circuitry
and
±
3 dB = tolerance of video output and intercarrier output amplitude V
o(rms)
.
Example: SAW filter G1962 (sound shelf: 20 dB)
V
o(rms)
= 32 mV typical.
α
1.1
20
-------------------------------------
3.6 dB
+
log
=
α
3.3
20
V
log
=
V
o(rms)
1.1 V p
p
–
)
2 2
----1
×
10
V
----------------------------20
(
)
6 dB
3 dB
±
+
2 2
----1
V
i(PC)
V
(
)
V
V
i(PC)
-------------
27 dB
–
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA9818T | Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9817TS | Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9817T | Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9818TS | Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9819T | Multistandard vision and sound-IF PLL with DVB-IF processing |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9818T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9818T/V1,118 | 功能描述:IC FM-PLL/AM DEMOD 24-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| TDA9818TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single/multistandard VIF/SIF-PLL and FM-PLL/AM demodulators |
| TDA9819 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard vision and sound-IF PLL with DVB-IF processing |
| TDA9819T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard vision and sound-IF PLL with DVB-IF processing |
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