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參數資料
型號: TSH512CYFT
廠商: STMICROELECTRONICS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: 10 X 10 MM, ROHS COMPLIANT, TQFP-44
文件頁數: 17/31頁
文件大小: 1350K
代理商: TSH512CYFT
General description
TSH512
24/31
Doc ID 8120 Rev 7
5.6
PEA section: pre-emphasis
The amplitude-regulated audio coming from the ALC feeds the positive input of the
operational amplifier called PEA (pre-emphasis). The pre-emphasis consists in a high-pass
filter in order to compensate the behavior of the FM transmission.
Figure 32.
Pre-emphasis schematics
RPEA1 and CPEA1 set the time constant of the pre-emphasis as:
τ = RPEA1. CPEA1
50 s or 75 s time constants are generally used.
Choosing the gain of the PEA stage also allows one to set the right modulation level to the
varicap diode. The gain in the passband is:
GPEA = 1+ (RPEA2/RPEA1)
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相關代理商/技術參數
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TSH60C 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide-Band, Low-Power Operational Amplifiers with Standby
TSH60CD 功能描述:運算放大器 - 運放 Lo Pwr Oper Amp Wide Band RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比(最小值):63 dB 輸入補償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
TSH60CDT 功能描述:運算放大器 - 運放 Wide band low power operational RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比(最小值):63 dB 輸入補償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
TSH61C 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide-Band, Low-Power Operational Amplifiers with Standby
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