- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98205 > TDA9884HN (NXP SEMICONDUCTORS) AM/FM, AUDIO/VIDEO DEMODULATOR, PQCC32 PDF資料下載
參數(shù)資料
| 型號(hào)： | TDA9884HN |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PQCC32 |
| 封裝： | 5 X 5 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, HVQFN-32 |
| 文件頁數(shù)： | 2/58頁 |
| 文件大?。?/td> | 290K |
| 代理商： | TDA9884HN |
第1頁當(dāng)前第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁
TDA9884_2
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 02 — 12 May 2006
10 of 58
Philips Semiconductors
TDA9884
I2C-bus controlled multistandard alignment-free IF-PLL
The gate time as well as the control logic of the acquisition help circuit is dependent on the
precision of the reference signal at pin REF. Operation as a crystal oscillator is possible as
well as connecting this input via a serial capacitor to an external reference frequency, e.g.
the tuning system oscillator.
The AFC signal is derived from the corresponding down counter stop value after a
counting cycle. The last four bits are latched and can be read out via the I2C-bus
(see Table 10). Also the digital-to-analog converted value is given as current at pin AFC.
7.7 Video demodulator and amplier
The video demodulator is realized by a multiplier which is designed for low distortion and
large bandwidth. The VIF signal is multiplied with the ‘in phase’ signal of the VIF-PLL
VCO.
The demodulator output signal is fed into the video preamplier via a level shift stage with
integrated low-pass lter to achieve carrier harmonics attenuation.
The output signal of the preamplier is fed to the VIF-AGC detector (see Section 7.3) and
in the sound trap mode also fed internally to the integrated sound carrier trap
(see Section 7.8). The differential trap output signal is converted and amplied by the
following post-amplier. The video output level at pin CVBS is 2 V (p-p).
In the bypass mode the output signal of the preamplier is fed directly through the
post-amplier to pin CVBS. The output video level is 1.1 V (p-p) for using an external
sound trap with 10 % overall loss.
Noise clipping is provided in both cases.
7.8 Sound carrier trap
The sound carrier trap consists of a reference lter, a phase detector and the sound trap
itself.
A sound carrier reference signal is fed into the reference low-pass lter and is shifted by
nominal 90 degrees. The phase detector compares the original reference signal with the
signal shifted by the reference lter and produces a DC voltage by charging or discharging
an integrated capacitor with a current proportional to the phase difference between both
signals, respectively to the frequency error of the integrated lters. The DC voltage
controls the frequency position of the reference lter and the sound trap. So the accurate
frequency position for the different standards is set by the sound carrier reference signal.
The sound trap itself is constructed of three separate traps to realize sufcient
suppression of the rst and second sound carriers.
7.9 SIF amplier
The SIF amplier consists of three AC-coupled differential stages. Gain control is
performed by emitter degeneration. The total gain control range is typically 66 dB. The
differential input impedance is typically 2 k
in parallel with 3 pF.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA9885HN/V5 | AM/FM, AUDIO/VIDEO DEMODULATOR, PQCC32 |
| TDA9885T/V5 | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| TDA9885TS/V5 | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| TDA9886HN/V5 | AM/FM, AUDIO/VIDEO DEMODULATOR, PQCC32 |
| TDA9886T/V5 | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9884TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus controlled multistandard alignment-free IF-PLL for mobile reception |
| TDA9884TS/V1 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF DEMODULATOR RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1,112 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1,118 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1/S1,11 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。