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模数转换器 ADS58C48 datasheet

更新时间：2019-10-09 23:15:42 大小：3M 上传用户：coofu查看TA发布的资源 标签：ADS58C48模数转换器 下载积分：0分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

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ADS58C48主要特性，方框图，模拟输入电路和多种驱动电路，以及ADS58C48EVM评估板主要特性，电路图和材料清单（BOM）。ADS58C48是TI公司的四路取样频率高达200MSPS 的11位（ADC），单电源1.8V工作，总功耗为0.9W。ADS58C48采用第三代SNRBoost3G技术，140MHz时的SFDR为82dBc，支持带宽高达60MHz，标准摆幅为350mV，主要用在各种通信设备包括遥控无线电，软件定义无线电（SDR），无线中继器以及MIMO和各种接收器。

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ads58c48.pdf 3M

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www.ti.com  
SLAS689 –MAY 2010  
Quad Channel IF 3G  
Check for Samples:
1
FEATURES  
DESCRIPTION  
•
Maximum Sample Rate: 200 MSPS  
The ADS58C48 is a quad channel 11-bit A/D  
converter with sampling rate up to 200 MSPS. It uses  
innovative design techniques to achieve high dynamic  
performance, while consuming extremely low power  
at 1.8V supply. This makes it well-suited for  
multi-carrier, wide band-width communications  
applications.  
•
High Dynamic Performance  
–
–
SFDR 82 dBc at 140 MHz  
72.3 dBFS SNR in 60 MHz BW Using  
SNRBoost 3G technology  
•
•
SNRBoost 3G Highlights  
3G  
–
–
Supports Wide Bandwidth up to 60 MHz  
The ADS58C48 uses third-generation SNRBoost  
technology to overcome SNR limitation due to  
Programmable Bandwidths – 60 MHz, 40  
MHz, 30 MHz, 20 MHz  
quantization noise (for bandwidths < Nyquist, Fs/2).  
3G  
Enhancements in the SNRBoost  
technology allow  
–
–
Flat Noise Floor within the Band  
Independent SNRBoost 3G Coefficients for  
support for SNR improvements over wide bandwidths  
3G  
(up to 60 MHz). In addition, separate SNRBoost  
Every Channel  
coefficients can be programmed for each channel.  
Output Interface  
The device has digital gain function that can be used  
to improve SFDR performance at lower full-scale  
input ranges. It includes a dc offset correction loop  
that can be used to cancel the ADC offset.  
–
Double Data Rate (DDR) LVDS with  
Programmable Swing and Strength  
–
–
–
–
Standard Swing: 350 mV  
The digital outputs of all channels are output as DDR  
LVDS (Double Data Rate) together with an LVDS  
clock output. The low data rate of this interface (400  
Mbps at 200 MSPS sample rate) makes it possible to  
use low-cost FPGA-based receivers. The strength of  
the LVDS output buffers can be increased to support  
50-Ω differential termination. This allows the output  
clock signal to be connected to two separate receiver  
chips with an effective 50-Ω termination (such as the  
two clock ports of the GC5330).  
Low Swing: 200 mV  
Default Strength: 100-Ω Termination  
2x Strength: 50-Ω Termination  
–
1.8V Parallel CMOS Interface Also  
Supported  
•
•
Ultra-Low Power with Single 1.8-V Supply  
–
–
0.9-W Total Power  
1.32-W Total Power (200 MSPS) with  
SNRBoost 3G on all 4 Channels  
The same digital output pins can also be configured  
as a parallel 1.8-V CMOS interface.  
–
1.12-W Total Power (200 MSPS) with  
SNRBoost 3G on 2 Channels  
It includes internal references while the traditional  
reference pins and associated decoupling capacitors  
have been eliminated. The device is specified over  
the industrial temperature range (–40°C to 85°C).  
Programmable Gain up to 6dB for SNR/SFDR  
Trade-Off  
•
•
•
DC Offset Correction  
Supports Low Input Clock Amplitude  
80-TQFP Package  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010, Texas Instruments Incorporated  

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