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參數(shù)資料
| 型號(hào)： | TSH512CYFT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, ROHS COMPLIANT, TQFP-44 |
| 文件頁數(shù)： | 11/31頁 |
| 文件大?。?/td> | 1350K |
| 代理商： | TSH512CYFT |
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TSH512
General description
Doc ID 8120 Rev 7
19/31
Figure 26.
LNA schematics
The LNA gain is given by:
GLNA (dB) = 20.Log(1+RLNA2/RLNA1)
The high-pass cut-off frequency is:
fHPF = 1/(2.π.RLNA1.CLNA1)
The lowpass filter cut-off frequency is:
fLPF = 1/(2.π.RLNA2.CLNA2)
If you connect an external circuit to the LNA output, the impedance of this external circuit
should be higher than 10 m
Ωand the capacitance lower than 50 pF in order to keep a good
stability.
Note:
The capacitor C must be connected directly to input pin 12.
5.2
Electret condenser microphone source
When an electret condenser microphone (ECM) is used, a high gain LNA is recommended,
but low frequencies have to be attenuated. The ECM must be biased with a stable and clean
reference voltage. The TSH512 provides the LNA and the MIC-BIAS sections to perform this
function (see Section 5.3. MIC-BIAS section: microphone bias voltage).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSH60 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide-Band, Low-Power Operational Amplifiers with Standby |
| 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(yùn)算放大器 - 運(yùn)放 Lo Pwr Oper Amp Wide Band RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)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(yùn)算放大器 - 運(yùn)放 Wide band low power operational RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)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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