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參數(shù)資料
| 型號： | TDA7405 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44 |
| 文件頁數(shù)： | 31/57頁 |
| 文件大小： | 750K |
| 代理商： | TDA7405 |
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TDA7405
11.6 Dual-MPX Mode
The TDA7405 is able to support a twin tuner concept via the Dual-MPX-Mode. In this configuration the MPX-pin
and the MD2G-pin are acting as MPX1 and MPX2 inputs. The DC-Voltage at the MD2-pin controls whether one
or both MPX-signals are used to decode the stereo FM-signal. It is designed as a window-comparator with the
characteristic shown in Figure 36 (Please note that the thresholds have a hysteresis of 500mV). In this mode
the stereodecoder highohmic-mute mutes both inputs in parallel.
Figure 37. Blockdiagram Dual MPX
Table 10. Pin-Configuration DMPX-/WSM-Mode
11.7 Weak-Signal Mute
For use with front-ends which do not support a weak-signal-mute function the TDA7405 offers this feature as
well. If this mode is enabled the pins 29 and 30 are used as an AC-coupling behind the Mute-Stage (see block-
diagram). In parallel pin 12 (AMIF) is switched internally to realize a mute time-constant with fast attack- and
slow decay-time.
Dual MPX
Weak-Signal
Mute
AMIF(12)
DMPXC(25)
MPX2(26)
MD2(43)
MD2G(44)
off
AMIF-In
not used
MD2-In
MD2-Gnd
off
on
WSM-TC
WSM-In
WSM-Out
MD2-In
MD2-Gnd
on
off
AMIF-In
DMPC-Cntrl
MPX2
MD2-In
MD2-Gnd
on
WSM-TC
WSM-In
WSM-Out
DMPC-Cntrl
MPX2
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相關代理商/技術參數(shù) |
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|---|---|
| TDA7405_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:EQUALIZER CARRADIO SIGNAL PROCESSOR |
| TDA7405TR | 功能描述:處理器 - 專門應用 EQUALIZER CAR RADIO SIGNAL PROCESSOR RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風格:SMD/SMT 封裝 / 箱體:MAPBGA-432 |
| TDA7406 | 功能描述:音頻 DSP Car Radio Signal RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7406T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR |
| TDA7406TR | 功能描述:音頻 DSP INFOTAINMENT SIGNAL RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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