參數(shù)資料
型號： TLC32046C
廠商： Texas Instruments, Inc.
英文描述： Wide-Band Analog Interface Circuit
中文描述： 寬帶模擬接口電路
文件頁數(shù)： 7/57頁
文件大?。?/td> 297K
代理商： TLC32046C
1–1
1 Introduction
The TLC32046C, TLC32046I, and TLC32046M wide-band analog interface circuits (AIC) are a complete
analog-to-digital and digital-to-analog interface system for advanced digital signal processors (DSPs)
similar to the TMS32020, TMS320C25, and TMS320C30. The TLC32046C and TLC32046I offer a powerful
combination of options under DSP control: three operating modes (dual-word [telephone interface], word,
and byte) combined with two word formats (8 bits and 16 bits) and synchronous or asynchronous operation.
It provides a high level of flexibility in that conversion and sampling rates, filter bandwidths, input circuitry,
receive and transmit gains, and multiplexed analog inputs are under processor control.
This AIC features a
band-pass switched-capacitor antialiasing input filter
14-bit-resolution A/D converter
14-bit-resolution D/A converter
low-pass switched-capacitor output-reconstruction filter.
The antialiasing input filter comprises eighth-order and fourth-order CC-type (Chebyshev/elliptic
transitional) low-pass and high-pass filters, respectively. The input filter is implemented in switched-
capacitor technology and is preceded by a continuous time filter to eliminate any possibility of aliasing
caused by sampled data filtering. When low-pass filtering is desired, the high-pass filter can be switched
out of the signal path. A selectable auxiliary differential analog input is provided for applications where more
than one analog input is required.
The output-reconstruction filter is an eighth-order CC-type (Chebyshev/elliptic transitional low-pass filter)
followed by a second-order (sin x)/x correction filter and is implemented in switched-capacitor technology.
This filter is followed by a continuous-time filter to eliminate images of the sample data signal. The on-board
(sin x)/x correction filter can be switched out of the signal path using digital signal processor control.
The A/D and D/A architectures ensure no missing codes and monotonic operation. An internal voltage
reference is provided to ease the design task and to provide complete control over the performance of the
IC. The internal voltage reference is brought out to REF. Separate analog and digital voltage supplies and
ground are provided to minimize noise and ensure a wide dynamic range. The analog circuit path contains
only differential circuitry to keep noise to a minimum. The exception is the DAC sample-and-hold, which
utilizes pseudo-differential circuitry.
The TLC32046C is characterized for operation from 0
°
C to 70
°
C, the TLC32046I is characterized for
operation from –40
°
C to 85
°
C, and the TLC32046M is characterized for operation from –55
°
C to 125
°
C.
相關(guān)PDF資料
PDF描述
TLC32046I Wide-Band Analog Interface Circuit
TLC32046M Wide-Band Analog Interface Circuit
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC32046CN 制造商:Rochester Electronics LLC 功能描述:- Bulk
TLC32046I 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wide-Band Analog Interface Circuit
TLC32046IN 制造商:Rochester Electronics LLC 功能描述:- Bulk
TLC32046M 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wide-Band Analog Interface Circuit
TLC32047 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wide-Band Analog Interface Circuit
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