參數(shù)資料
型號： ADS6243IRGZT
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 2-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC48
封裝： 7 X 7 MM, GREEN, PLASTIC, QFN-48
文件頁數(shù)： 38/76頁
文件大?。?/td> 3497K
代理商： ADS6243IRGZT
www.ti.com
M0087-01
S(1,1)
Frequency(100kHzto500MHz)
F2
F1
Freq=50MHz
S(1,1)=0.967/ –13.241
Impedance=62.211 – j421.739
F2
Freq=400MHz
S(1,1)=0.273/ –59.329
Impedance=58.132 – j29.510
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M
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Z
in
--
W
f -- Input Frequency -- MHz
I
F1
Frequency = 50 MHz
Mag(Zin1) = 426.302
F2
Frequency = 400 MHz
Mag(Zin1) = 65.193
Using RF-Transformer Based Drive Circuits
SLAS542A – MAY 2007 – REVISED JULY 2007
Figure 84. ADC Input Impedance, Zin
Figure 85 shows a configuration using a single 1:1 turns ratio transformer (for example, Coilcraft WBC1-1) that
can be used for low input frequencies (about 100MHz).
The single-ended signal is fed to the primary winding of the RF transformer. The transformer is terminated on the
secondary side. Putting the termination on the secondary side helps to shield the kickbacks caused by the
sampling circuit from the RF transformer’s leakage inductances. The termination is accomplished by two resistors
connected in series, with the center point connected to the 1.5 V common mode (VCM pin). The value of the
termination resistors (connected to common mode) has to be low (< 100
) to provide a low-impedance path for
the ADC common-mode switching current.
Copyright 2007, Texas Instruments Incorporated
43
Product Folder Link(s): ADS6245 ADS6244 ADS6243 ADS6242
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參數(shù)描述
ADS6243IRGZTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Dual 14B 80MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS6244 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL CHANNEL, 14-BIT, 125/105/80/65 MSPS ADC WITH SERIAL LVDS OUTPUTS
ADS6244EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS6244 Evaluation Module RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
ADS6244IRGZ25 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Dual 14B 105MSPS ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS6244IRGZR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Dual 14B 105MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
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