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| 型号： | TSH512CF |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封装： | 10 X 10 MM, ROHS COMPLIANT, TQFP-44 |
| 文件页数： | 10/31页 |
| 文件大小： | 1350K |
| 代理商： | TSH512CF |
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General description
TSH512
18/31
Doc ID 8120 Rev 7
5
General description
The TSH512 is a 0.4- to 11-MHz dual FM analog transmitter. This circuit offers the functions
needed for an advanced infrared STEREO transmitter. The access pins for each section
allow high versatility and therefore a lot of applications: mono infrared transmitter, stereo
transmitter, mono/stereo sub-carrier generator for video transmissions (for example the
popular 2.4 GHz video links). The block diagram for the TSH512 is shown in Figure 1 on
Each audio input is amplified with a low noise amplifier (LNA section) allowing connection
to line level sources or directly to a microphone. Built-in MIC BIAS voltage references
provide bias for electret condenser microphones (ECM) with a high power supply rejection
ratio.
Each audio path also includes an automatic level control (ALC) to limit the over-
modulation and the distortion on very high signal amplitudes. The following operational
amplifier (PEA) allows a pre-emphasis transfer function before modulating the varicap
diode.
Built-in voltage references (VCO-BIAS) offer a regulated voltage to bias the varicap diodes.
The voltage controlled oscillator (VCO) is an integrated oscillator giving typically 600 mV
peak-to-peak at 2.8 MHz.
The output buffer section linearly amplifies the FM carrier to provide a sinusoidal output.
This sinusoidal signal reduces the inter-modulation products between the carriers,
especially in two-way or in multi-carrier systems (see Section 4: Application information on
page 14).
The voice operated transmit function (VOX) automatically detects when an audio signal
appears over the background noise.
The standby of the second transmitter reduces consumption in mono operation.
5.1
LNA section: low noise amplifier
For each transmitter, the audio source is connected to the LNA. The LNA stage is a low
noise operational amplifier typically usable with a gain from 0 to 40 dB.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TSH512CFT | 功能描述:音频发送器、接收器、收发器 Hi Fi stereo mono infrared transmitter RoHS:否 制造商:Cirrus Logic 工作电源电压:3.3 V, 5 V 电源电流:11.8 mA 通道数量:1 最大工作温度:+ 70 C 接口类型:I2C, SPI 安装风格:SMD/SMT 封装 / 箱体:TSSOP-28 封装: |
| TSH512CYFT | 功能描述:IC IR TRANSMITTER HIFI 44LQFP RoHS:是 类别:RF/IF 和 RFID >> RF 发射器 系列:- 标准包装:4,000 系列:- 频率:310MHz ~ 440MHz 应用:- 调制或协议:UHF，ASK 数据传输率 - 最大:20 kBaud 功率 - 输出:1dBm ~ 5dBm 电流 - 传输:10mA 数据接口:PCB，表面贴装 天线连接器:PCB，表面贴装 存储容量:- 特点:- 电源电压:2.2 V ~ 4 V 工作温度:-40°C ~ 85°C 封装/外壳:16-LSSOP（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| TSH60 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Wide-Band, Low-Power Operational Amplifiers with Standby |
| TSH60C | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Wide-Band, Low-Power Operational Amplifiers with Standby |
| TSH60CD | 功能描述:运算放大器 - 运放 Lo Pwr Oper Amp Wide Band RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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