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参数资料
| 型号： | LTC2282IUP#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC DUAL 12BIT 105MSPS 64-QFN |
| 标准包装： | 40 |
| 位数： | 12 |
| 采样率（每秒）： | 105M |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 630mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-WFQFN 裸露焊盘 |
| 供应商设备封装： | 64-QFN（9x9） |
| 包装： | 管件 |
| 输入数目和类型： | 2 个单端，双极; 2 个差分, 双极 |
| 产品目录页面： | 1349 (CN2011-ZH PDF) |
LTC2282
14
2282fb
APPLICATIONS INFORMATION
Figure 5 shows a single-ended input circuit. The impedance
seen by the analog inputs should be matched. This circuit
is not recommended if low distortion is required.
The 25Ω resistors and 12pF capacitor on the analog
inputs serve two purposes: isolating the drive circuitry
from the sample-and-hold charging glitches and limiting
the wideband noise at the converter input.
For input frequencies above 70MHz, the input circuits of
Figure 6, 7 and 8 are recommended. The balun transformer
gives better high frequency response than a ux coupled
center tapped transformer. The coupling capacitors allow
the analog inputs to be DC biased at 1.5V. In Figure 8, the
series inductors are impedance matching elements that
maximize the ADC bandwidth.
25Ω
0.1μF
AIN
+
AIN
–
2.2μF
VCM
ANALOG
INPUT
0.1μF
T1
T1 = MA/COM, ETC 1-1-13
RESISTORS, CAPACITORS, INDUCTORS
ARE 0402 PACKAGE SIZE
2282 F08
6.8nH
LTC2282
25Ω
0.1μF
AIN
+
AIN
–
2.2μF
VCM
ANALOG
INPUT
0.1μF
T1
T1 = MA/COM, ETC 1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
2282 F07
LTC2282
25Ω
12Ω
0.1μF
AIN
+
AIN
–
8pF
2.2μF
VCM
ANALOG
INPUT
0.1μF
T1
T1 = MA/COM, ETC 1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
2282 F06
LTC2282
25Ω
0.1μF
ANALOG
INPUT
VCM
AIN
+
AIN
–
1k
12pF
2282 F05
2.2μF
1k
25Ω
0.1μF
LTC2282
25Ω
12pF
2.2μF
VCM
2282 F04
–
+
CM
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
AIN
+
AIN
–
LTC2282
Figure 6. Recommended Front End Circuit for
Input Frequencies Between 70MHz and 170MHz
Figure 8. Recommended Front End Circuit for
Input Frequencies Above 300MHz
Figure 7. Recommended Front End Circuit for
Input Frequencies Between 170MHz and 300MHz
Figure 5. Single-Ended Drive
Figure 4. Differential Drive with an Amplier
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2282IUP-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 12-Bit, 105Msps Low Power 3V ADC |
| LTC2282IUP-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 12-Bit, 105Msps Low Power 3V ADC |
| LTC2282UP | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 12-Bit, 105Msps Low Power 3V ADC |
| LTC2283 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 12-Bit, 125Msps Low Power 3V ADC |
| LTC2283CUP | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 12-Bit, 125Msps Low Power 3V ADC |
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