参数资料
型号: LTC2264CUJ-12#TRPBF
厂商: Linear Technology
文件页数: 14/34页
文件大小: 0K
描述: IC ADC 12BIT SER/PAR 40M 40-QFN
标准包装: 2,000
位数: 12
采样率(每秒): 40M
数据接口: Serial LVDS
转换器数目: 2
功率耗散(最大): 169mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-QFN(6x6)
包装: 带卷 (TR)
输入数目和类型: 2 Differential; 2 Single-Ended
配用: DC1371A-ND - BOARD USB DATA ACQUISITION HS
LTC2265-12/
LTC2264-12/LTC2263-12
21
22654312fb
Amplifier Circuits
Figure7showstheanaloginputbeingdrivenbyahighspeed
differential amplifier. The output of the amplifier is AC-
coupledtotheA/Dsotheamplifier’soutputcommonmode
voltage can be optimally set to minimize distortion.
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
226512 F04
LTC2265-12
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
226512 F05
LTC2265-12
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
226512 F06
LTC2265-12
25
200
0.1F
AIN+
AIN–
12pF
0.1F
VCM
LTC2265-12
226512 F07
+
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
0.1F
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
Figure 7. Front-End Circuit Using a High Speed
Differential Amplifier
APPLICATIONS INFORMATION
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.
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