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參數(shù)資料
| 型號(hào)： | TDA8417 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | TV and VTR stereo/dual sound processor with integrated filters and IIC-bus control(帶IIC總線控制和集成濾波器的的 TV和VTR立體聲/雙聲道處理器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, EIAJ, SC-603, SOT-146-1, DIP-20 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大小： | 130K |
| 代理商： | TDA8417 |
September 1989
5
Philips Semiconductors
Preliminary specification
TV and VTR stereo/dual sound processor
with integrated filters and I
2
C-bus control
TDA8417
PINNING
FUNCTIONAL DESCRIPTION
Anti-aliasing filters
Frequency band limitation is performed by a second order Sallen and Key low-pass filter inserted in the AF signal path
and the identification circuit. This limitation is necessary because of the time-discrete signal processing needed to meet
the Nyquist criterium.
Identification
To enable the identification of the transmitted AF signal (mono, stereo or dual sound), the carrier frequency of the second
channel (E2) is also modulated by an identification signal. The identification signal is a 54.6875 kHz pilot carrier signal
which is 50% amplitude modulated by either a 117.4 Hz signal for stereo transmission or by a 274.1 Hz signal for dual
sound transmission.
The identification section of the circuit consists of a 54 kHz high-pass filter followed by a gain controlled amplifier with an
AM demodulator. The total gain of the high-pass filter and the amplifier is approximately 56 dB. The demodulated
identification signal is filtered by the identification band-pass filters, (117.4 Hz for stereo transmission, 274.1 Hz for dual
sound transmission). The output from either filter is converted to a DC signal by a peak detector and the necessary
hysteresis is performed by a Schmitt-trigger. The resultant DC output signals indicate the status of the transmitter (mono,
stereo or dual sound).
1
2
3
4
5
6
7
8
9
10
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12
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18
19
20
Control port C1
SDA, serial data line (I
2
C-bus)
SCL, serial clock line (I
2
C-bus)
Oscillator input (or quartz)
Digital ground (0 V)
Not connected, but reserved
Sound channel input AF2 (E2)
Sound channel input AF1 (E1)
External AF input (E4)
Not connected, but reserved
Output A4 AF 2 output
Output A3 AF 2 output
Output A2 AF 1 output
Output A1 AF 1 output
Supply voltage V
P
Analogue ground (0 V)
Ripple rejection improvement
Mute input
Control port C2
Not connected, but reserved
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8421 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hi-fi stereo audio processor; I2C bus |
| TDA8424 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hi-Fi stereo audio processor; I2C-bus |
| TDA8424/V7,112 | 功能描述:IC AUDIO PROC I2C 20-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| TDA8425 | 制造商:NXP Semiconductors 功能描述: |
| TDA8425/V7,112 | 功能描述:IC STEREO AUDIO PROC HI-FI 20DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
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