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參數(shù)資料
| 型號： | LTC2284IUP#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 6/24頁 |
| 文件大小： | 0K |
| 描述： | IC ADC DUAL 14BIT 105MSPS 64-QFN |
| 標準包裝： | 40 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 105M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 630mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-WFQFN 裸露焊盤 |
| 供應商設(shè)備封裝： | 64-QFN（9x9） |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 2 個單端，雙極; 2 個差分, 雙極 |
LTC2284
2284fa
14
25
25
0.1
F
AIN
+
AIN
–
2.2
F
VCM
ANALOG
INPUT
0.1
F
0.1
F
T1
T1 = MA/COM, ETC 1-1-13
RESISTORS, CAPACITORS, INDUCTORS
ARE 0402 PACKAGE SIZE
2284 F08
6.8nH
LTC2284
25
25
0.1
F
AIN
+
AIN
–
2.2
F
VCM
ANALOG
INPUT
0.1
F
0.1
F
T1
T1 = MA/COM, ETC 1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
2284 F07
LTC2284
25
25
12
12
0.1
F
AIN
+
AIN
–
8pF
2.2
F
VCM
ANALOG
INPUT
0.1
F
0.1
F
T1
T1 = MA/COM, ETC 1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
2284 F06
LTC2284
25
0.1
F
ANALOG
INPUT
VCM
AIN
+
AIN
–
1k
12pF
2284 F05
2.2
F
1k
25
0.1
F
LTC2284
25
25
12pF
2.2
F
VCM
2284 F04
–
+
CM
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
AIN
+
AIN
–
LTC2284
Figure 5 shows a single-ended input circuit. The imped-
ance seen by the analog inputs should be matched. This
circuit is not recommended if low distortion is required.
APPLICATIO S I FOR ATIO
WU
UU
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 Amplifier
The 25
resistorsand12pFcapacitorontheanaloginputs
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 trans-
former gives better high frequency response than a flux
coupled center tapped transformer. The coupling capaci-
tors 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.
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| LTC2285CUP#TRPBF | 功能描述:IC ADC DUAL 14BIT 125MSPS 64QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類型:2 個單端，單極 |
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