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参数资料
| 型号： | TLC320A545C |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | SMA (F) TO BNC (M) ADAPTERS |
| 中文描述： | 单信道数据/传真编解码器 |
| 文件页数： | 13/35页 |
| 文件大小： | 174K |
| 代理商： | TLC320A545C |
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2–1
2 Functional Description
2.1
Device Requirements and System Overview
The TLC320AD545 device consists of single codec channel, a hybrid circuit with external resistors and capacitors
for setting gain and filter poles, serial port, and miscellaneous other logic functions.
2.2
Codec Functions
The codec portion of the device performs the functions for:
One channel of analog-to-digital conversion
Digital-to-analog conversion
Lowpass filtering
Control of analog input and output gains
Internal oversampling coupled with internal decimation and interpolation
A 16-bit serial port interface to the host processor.
The maximum sample rate is 11.025 kHz.
2.3
Hybrid Functions
The hybrid circuitry has integrated amplifiers whose gains and filter pole frequencies are set by external resistors and
capacitors. This allows maximum flexibility to make adjustments for board variations and international standards
while providing integration of the function. The filter amplifier stages are followed by a programmable gain amplifier,
which feeds an 8
differential speaker driver for the AT41 call progress monitor speaker. The monitor speaker driver
can be programmed for 0 dB gain or muted through control register 2. The source for the monitor speaker input can
be chosen to be either the amplified DAC output (Data_Out PGA) or the ADC input signal through control register
1 (see Appendix A).
A 2.5 V/1.5 V reference voltage (DT_REF) is provided as a reference for the transformer. It is necessary to reference
to 2.5 V/1.5 V (rather than ground), since the amplifiers are powered off by single-rail supplies. DT_REF is 2.5 V when
DAV
DD
is 5 V and 1.5 V when DAV
DD
is 3.3 V.
2.4
Miscellaneous Logic and Other Circuitry
The logic functions include the circuitry required to implement serial port and control register programming through
secondary communication on those serial ports. Two control registers can be programmed during secondary
communications from the serial port. These control registers set amplifier gains, select loopback functions, and read
ADC overflow flags. In addition, a flash write enable (FWE) circuit takes an external logic input and provides current
to power the write enable circuit of an external memory device. The flash write enable circuit is powered from the
digital power supply.
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| TLC320A545I | SMA (F) TO MCX (M) ADAPTERS |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLC320A545C-I | 制造商:TI 制造商全称:Texas Instruments 功能描述:Single Channel Data/Fax Codec |
| TLC320A545I | 制造商:TI 制造商全称:Texas Instruments 功能描述:Single Channel Data/Fax Codec |
| TLC320AC01 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Single-Supply Analog Interface Circuit |
| TLC320AC01C | 制造商:TI 制造商全称:Texas Instruments 功能描述:Single-Supply Analog Interface Circuit |
| TLC320AC01CFN | 功能描述:接口—CODEC SNGL CH Codec Bandwidth Indpendent RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
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