For more information www.linear.com/LTC2258-14 CONVERTER O" />
參數(shù)資料
型號(hào): LTC2257IUJ-14#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 10/34頁(yè)
文件大?。?/td> 0K
描述: IC ADC 14BIT 40MSPS 1.8V 40-QFN
產(chǎn)品培訓(xùn)模塊: LTC2262 - Ultra Low Power High Speed ADCs
標(biāo)準(zhǔn)包裝: 2,000
位數(shù): 14
采樣率(每秒): 40M
數(shù)據(jù)接口: 并聯(lián),串行,SPI
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 54mW
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: 1 個(gè)差分
配用: DC718C-ND - DEMO QUIKEVAL-II DATA
LTC2258-14
LTC2257-14/LTC2256-14
18
225814fc
For more information www.linear.com/LTC2258-14
CONVERTER OPERATION
TheLTC2258-14/LTC2257-14/LTC2256-14arelowpower
14-bit 65Msps/40Msps/25Msps A/D converters that are
poweredbyasingle1.8Vsupply.Theanaloginputsshould
be driven differentially. The encode input can be driven
differentially, or single ended for lower power consump-
tion. The digital outputs can be CMOS, double data rate
CMOS (to halve the number of output lines), or double
data rate LVDS (to reduce digital noise in the system.)
Many additional features can be chosen by programming
the mode control registers through a serial SPI port. See
the Serial Programming Mode section.
ANALOG INPUT
The analog input is a differential CMOS sample-and-hold
circuit (Figure 2). The inputs should be driven differentially
around a common mode voltage set by the VCM output
pin, which is nominally VDD/2. For the 2V input range,
the inputs should swing from VCM – 0.5V to VCM + 0.5V.
Thereshouldbe180°phasedifferencebetweentheinputs.
CSAMPLE
3.5pF
RON
25
RON
25
VDD
LTC2258-14
AIN+
225814 F02
CSAMPLE
3.5pF
VDD
AIN–
ENC
ENC+
1.2V
10k
1.2V
10k
CPARASITIC
1.8pF
CPARASITIC
1.8pF
10
Figure 2. Equivalent Input Circuit
applicaTions inForMaTion
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LTC2258CUJ-12#PBF 功能描述:IC ADC 12BIT 65MSPS 1.8V 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:- 位數(shù):14 采樣率(每秒):83k 數(shù)據(jù)接口:串行,并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP(0.600",15.24mm) 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端,雙極