參數(shù)資料
型號： LTC2268IUJ-14#TRPBF
廠商： Linear Technology
文件頁數(shù)： 13/32頁
文件大?。?/td> 0K
描述： IC ADC 14BIT 125MSPS DUAL 40QFN
標(biāo)準(zhǔn)包裝： 2,000
位數(shù)： 14
采樣率（每秒）： 125M
數(shù)據(jù)接口： Serial LVDS
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 364mW
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： 40-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 40-QFN（6x6）
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 2 Differential; 2 Single-Ended
配用： DC1371A-ND - BOARD USB DATA ACQUISITION HS
LTC2268-14/
LTC2267-14/LTC2266-14
20
22687614fa
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 optimal
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 distor-
tion.
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
Figure 7. Front End Circuit Using a High Speed
Differential Amplifier
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
226814 F04
LTC2268-14
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
226814 F05
LTC2268-14
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
226814 F06
LTC2268-14
25
200
0.1F
AIN+
AIN–
12pF
0.1F
VCM
LTC2268-14
226814 F07
–
+
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
0.1F
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LTC2269CUK#PBF 制造商:Linear Technology 功能描述:ADC Single 20Msps 16-bit Parallel/Serial (SPI)/LVDS 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16BIT 20MSPS 48-QFN 制造商:Linear Technology 功能描述:ADC 16BIT 1.8V 20MSPS 48QF 制造商:Linear Technology 功能描述:ADC, 16BIT, 1.8V, 20MSPS, 48QFN 制造商:Linear Technology 功能描述:ADC, 16BIT, 20MSPS, PARALLEL, SERIAL, QFN-48; Resolution (Bits):16bit; Sampling Rate:20MSPS; Supply Voltage Type:Single; Supply Voltage Min:1.7V; Supply Voltage Max:1.9V; Supply Current:48.9mA; Digital IC Case Style:QFN; DNL:0.2LSB ;RoHS Compliant: Yes
LTC2269CUK#TRPBF 制造商:Linear Technology 功能描述:ADC Single 20Msps 16-bit Parallel/Serial (SPI)/LVDS 48-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 16BIT 20MSPS 48-QFN
LTC2269IUK#PBF 制造商:Linear Technology 功能描述:ADC Single 20Msps 16-bit Parallel/Serial (SPI)/LVDS 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16BIT 20MSPS 48-QFN 制造商:Linear Technology 功能描述:ADC 16BIT 1.8V 20MSPS 48QF 制造商:Linear Technology 功能描述:ADC, 16BIT, 1.8V, 20MSPS, 48QFN 制造商:Linear Technology 功能描述:ADC, 16BIT, 20MSPS, PARALLEL, SERIAL, QFN-48; Resolution (Bits):16bit; Sampling Rate:20MSPS; Supply Voltage Type:Single; Supply Voltage Min:1.7V; Supply Voltage Max:1.9V; Supply Current:48.9mA; Digital IC Case Style:QFN; DNL:0.2LSB ;RoHS Compliant: Yes
LTC2269IUK#TRPBF 制造商:Linear Technology 功能描述:ADC Single 20Msps 16-bit Parallel/Serial (SPI)/LVDS 48-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 16BIT 20MSPS 48-QFN
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