參數(shù)資料
型號(hào)： LTC2172IUKG-12#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： ADC
英文描述： 4-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
封裝： 7 X 8 MM, LEAD FREE, PLASTIC, QFN-52
文件頁(yè)數(shù)： 14/34頁(yè)
文件大?。?/td> 1304K
代理商： LTC2172IUKG-12#TRPBF
LTC2172-12/
LTC2171-12/LTC2170-12
21
21721012fb
Transformer Coupled Circuits
Figure 3 shows the analog input being driven by an RF
transformer with a center-tapped secondary. The center
tap is biased with VCM, setting the A/D input at its opti-
mal DC level. At higher input frequencies a transmission
line balun transformer (Figures 4 to 6) has better balance,
resulting in lower A/D distortion.
applicaTions inForMaTion
Amplifier Circuits
Figure 7 shows the analog input being driven by a high
speed differential amplifier. The output of the amplifier is
AC-coupled to the A/D so the amplifier’s output common
mode voltage can be optimally set to minimize distortion.
At very high frequencies an RF gain block will often have
lower distortion than a differential amplifier. If the gain
block is single-ended, then a transformer circuit (Figures
4 to 6) should convert the signal to differential before
driving the A/D.
Figure 5. Recommended Front-End Circuit for Input
Frequencies from 170MHz to 300MHz
Figure 6. Recommended Front-End Circuit for Input
Frequencies Above 300MHz
Figure 4. Recommended Front-End Circuit for Input
Frequencies from 70MHz to 170MHz
25
50
0.1F
AIN+
AIN–
4.7pF
0.1F
VCM
ANALOG
INPUT
0.1F
T1
T2
T1: MA/COM MABA-007159-000000
T2: MA/COM MABAES0060
RESISTORS, CAPACITORS ARE 0402 PACKAGE SIZE
217212 F04
LTC2172-12
25
50
0.1F
AIN+
AIN–
1.8pF
0.1F
VCM
ANALOG
INPUT
0.1F
T1
T2
T1: MA/COM MABA-007159-000000
T2: COILCRAFT WBC1-1LB
RESISTORS, CAPACITORS ARE 0402 PACKAGE SIZE
217212 F05
LTC2172-12
25
50
0.1F
2.7nH
AIN+
AIN–
0.1F
VCM
ANALOG
INPUT
0.1F
T1
T1: MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
217212 F06
LTC2172-12
25
200
0.1F
AIN+
AIN–
12pF
0.1F
VCM
LTC2172-12
217212 F07
–
+
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
0.1F
Figure 7. Front-End Circuit Using a High Speed
Differential Amplifier
相關(guān)PDF資料
PDF描述
LTC2171IUKG-12#PBF 4-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2172CUKG-12#TRPBF 4-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2172CUKG-14#PBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2172IUKG-14#TRPBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2170CUKG-14#PBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2172IUKG-14#PBF 功能描述:IC ADC 14BIT SER/PAR 65M 52-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱(chēng):296-25851-6
LTC2172IUKG-14#PBF 制造商:Linear Technology 功能描述:IC ADC 14BIT 65MSPS QFN-52
LTC2172IUKG-14#TRPBF 功能描述:IC ADC 14BIT SER/PAR 65M 52-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類(lèi)型:2 個(gè)單端，單極
LTC2172IUKG-14PBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:14-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
LTC2172IUKG-14TRPBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:14-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
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