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| 型号： | TSA1203IF |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | ADC |
| 英文描述： | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, QFP48 |
| 封装： | 7 X 7 MM, TQFP-48 |
| 文件页数： | 17/30页 |
| 文件大小： | 440K |
| 代理商： | TSA1203IF |
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Practical application examples
TSA1203
24/30
9
Practical application examples
9.1
Digital interface applications
The wide external buffer power supply range of the TSA1203 makes it a perfect choice for
plugging into 2.5 V or 3.3 V low voltage DSPs or digital interfaces.
9.2
Medical imaging applications
Driven by the increasing demand for applications requiring either portability or a high degree
of parallelism (or both), this product satisfies the requirements of medical imaging and
telecom infrastructures.
The typical system diagram in Figure 32, shows how a narrow input beam of acoustic
energy is sent into a living body via the transducer, and how the energy reflected back is
analyzed.
Figure 32. Medical imaging application
The transducer is a piezoelectric ceramic such as zirconium titanate. The whole array can
reach up to 512 channels. The TX beam former, amplified by the HV TX amps, delivers up to
100 V amplitude excitation pulses with phase and amplitude shifts. The mux and T/R switch
is a two way input signal transmitter/ output receiver.
To compensate for skin and tissues attenuation effects, the time gain compensation (TGC)
amplifier is an exponential amplifier that amplifies low voltage signals to the ADC input
range. A differential output structure with low noise and very high linearity are essential
factors.
These applications need high speed, low power and high performance ADCs. 10-12 bit
resolution is necessary to lower the quantification noise. As multiple channels are used, a
dual converter is a must for room saving issues.
The input signal is in the range of 2 to 20 MHz (mainly 2 to 7 MHz) and the application uses
mostly a 4 over-sampling ratio for spurious free dynamic range (SFDR) optimization.
The next RX beam former and processing blocks enable the analysis of the output channels
versus the input beam.
Mux and
T/R
switches
TX beam
former
Processing
and display
RX beam
former
ADC
TGC amplifier
HV TX amps
相关PDF资料 |
PDF描述 |
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| TSA1203IFT-E | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, QFP48 |
| TSA1204IFT-E | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| TSA1204IFT | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| TSA1204IF | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| TSA1401IF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TSA1203IFT | 功能描述:模数转换器 - ADC Dual Channel 12-Bit RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| TSA1203IFT-E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Dual-channel 12-bit 40Msps 215mW A/D converter |
| TSA1204 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DUAL-CHANNEL, 12-BIT, 20MSPS, 120mW A/D CONVERTER |
| TSA1204_06 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Dual channel 12-bit 20Msps 120mW A/D converter |
| TSA1204IF | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DUAL-CHANNEL, 12-BIT, 20MSPS, 120mW A/D CONVERTER |
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