For more information www.linear.com/LTC2262-12 APPLICATIONS INFORMATION 25 200 0" />
參數(shù)資料
型號： LTC2262IUJ-12#PBF
廠商： Linear Technology
文件頁數(shù)： 7/28頁
文件大?。?/td> 0K
描述： IC ADC 12BIT 150MSPS 40-QFN
產(chǎn)品培訓(xùn)模塊： LTC2262 - Ultra Low Power High Speed ADCs
標(biāo)準(zhǔn)包裝： 61
位數(shù)： 12
采樣率（每秒）： 150M
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 146mW
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： 管件
輸入數(shù)目和類型： 1 個差分
配用： DC890B-ND - BOARD USB DATA COLLECTION
LTC2262-12
15
226212fc
For more information www.linear.com/LTC2262-12
APPLICATIONS INFORMATION
25
200
0.1F
AIN+
AIN–
12pF
0.1F
VCM
LTC2262-12
226212 F07
–
+
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
0.1F
Figure 7. Front-End Circuit Using a High Speed
Differential Amplifier
Amplifier Circuits
Figure 7 shows the analog input being driven by a high
speeddifferentialamplifier.TheoutputoftheamplifierisAC
coupledtotheA/Dsotheamplifier’soutputcommonmode
voltage can be optimally set to minimize distortion.
At very high frequencies an RF gain block will often have
lower distortion than a differential amplifier. If the gain
blockissingle-ended,thenatransformercircuit(Figures 4
to 6) should convert the signal to differential before driv-
ing the A/D.
Reference
The LTC2262-12 has an internal 1.25V voltage reference.
For a 2V input range using the internal reference, connect
SENSE to VDD. For a 1V input range using the internal
reference, connect SENSE to ground. For a 2V input range
withanexternalreference,applya1.25Vreferencevoltage
to SENSE (Figure 9.)
The input range can be adjusted by applying a voltage to
SENSE that is between 0.625V and 1.30V. The input range
will then be 1.6 VSENSE.
VREF
REFH
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO GND FOR 1V RANGE;
RANGE = 1.6 VSENSE FOR
0.65V < VSENSE < 1.300V
1.25V
REFL
0.1F
2.2F
INTERNAL ADC
HIGH REFERENCE
BUFFER
5
0.8x
DIFF AMP
INTERNAL ADC
LOW REFERENCE
1.25V BANDGAP
REFERENCE
0.625V
RANGE
DETECT
AND
CONTROL
1F
0.1F
LTC2262-12
226212 F08
Figure 8. Reference Circuit
SENSE
1.25V
EXTERNAL
REFERENCE
1F
VREF
226212 F09
LTC2262-12
Figure 9. Using an External 1.25V Reference
The VREF, REFH and REFL pins should be bypassed as
shown in Figure 8. The 0.1F capacitor between REFH and
REFL should be as close to the pins as possible (not on
the back side of the circuit board).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2262IUJ-14#PBF 制造商:Linear Technology 功能描述:ADC Single Pipelined 150Msps 14-bit Parallel/LVDS 40-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 14BIT 1.8V 150MSPS 40-QFN
LTC2262IUJ-14#TRPBF 制造商:Linear Technology 功能描述:ADC Single Pipelined 150Msps 14-bit Parallel/LVDS 40-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 14BIT 150MSPS 40-QFN
LTC2263-12 制造商:LINER 制造商全稱:Linear Technology 功能描述:12-Bit, 65Msps/40Msps/25Msps Low Power Dual ADCs
LTC2263-14 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad 14-Bit, 125Msps ADC with Integrated Drivers
LTC2263CUJ-12#PBF 功能描述:IC ADC 12BIT SER/PAR 25M 40-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
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