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參數(shù)資料
| 型號： | LTC2205CUK-14#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 9/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14-BIT 65MSPS 48-QFN |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 65M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 776mW |
| 電壓電源： | 單電源 |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-QFN-EP（7x7） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個差分 |
| 配用： | DC890B-ND - BOARD USB DATA COLLECTION |
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LTC2205-14
17
220514fb
Figure 3. Single-Ended to Differential Conversion Using a Transformer.
Recommended for Input Frequencies from 5MHz to 150MHz
Figure 4a. Using a Transmission Line Balun Transformer.
Recommended for Input Frequencies from 150MHz to 250MHz
Figure 4b. Using a Transmission Line Balun Transformer.
Recommended for Input Frequencies from 250MHz to 500MHz
Direct Coupled Circuits
Figure 5 demonstrates the use of a differential amplier to
convert a single ended input signal into a differential input
signal. The advantage of this method is that it provides
low frequency input response; however, the limited
gain bandwidth of any op amp or closed-loop amplier
will degrade the ADC SFDR at high input frequencies.
Additionally, wideband op amps or differential ampliers
tend to have high noise. As a result, the SNR will be
degraded unless the noise bandwidth is limited prior to
the ADC input.
Center-tapped transformers provide a convenient means
of DC biasing the secondary; however, they often show
poor balance at high input frequencies, resulting in large
2nd order harmonics.
Figure 4a shows transformer coupling using a transmission
line balun transformer. This type of transformer has much
better high frequency response and balance than ux
coupled center tap transformers. Coupling capacitors are
added at the ground and input primary terminals to allow
the secondary terminals to be biased at 1.25V. Figure
4b shows the same circuit with components suitable for
higher input frequencies.
APPLICATIONS INFORMATION
35Ω
5Ω
35Ω
10Ω
5Ω
0.1μF
AIN
+
AIN
–
8.2pF
2.2μF
8.2pF
VCM
T1
T1 = MA/COM ETC1-1T
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
EXCEPT 2.2μF
220514 F03
LTC2205-14
0.1μF
AIN
+
AIN
–
4.7pF
2.2μF
4.7pF
VCM
LTC2205-14
ANALOG
INPUT
0.1mF
T1
1:1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
EXCEPT 2.2mF
220514 F04a
5Ω
10Ω
25Ω
10Ω
5Ω
0.1μF
AIN
+
AIN
–
2.2μF
2.2pF
VCM
LTC2205-14
ANALOG
INPUT
0.1μF
T1
1:1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
EXCEPT 2.2μF
22054 F04b
5Ω
25Ω
5Ω
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2205CUK-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205CUK-TR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205CUK-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205IUK | 制造商:Linear Technology 功能描述:Single ADC Pipelined 65Msps 16-bit Parallel 48-Pin QFN EP |
| LTC2205IUK#PBF | 制造商:Linear Technology 功能描述:Single ADC Pipelined 65Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16-BIT 65MSPS 48-QFN 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 16-bit, 65Msps ADC 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 65MSPS, QFN-48, Resolution (Bits):16bit, Sampling Rate:65MSPS, Supply Voltage Type:Single, Supply Voltage Min:3.135V, Supply Voltage Max:3.465V, Supply Current:185mA, Digital IC Case Style:QFN, No. of Pins:48 , RoHS Compliant: Yes |
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