- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄39415 > LTC2260IUJ-12#TRPBF (LINEAR TECHNOLOGY CORP) 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC2260IUJ-12#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| 封裝： | 6 X 6 MM, LEAD FREE, PLASTIC, QFN-40 |
| 文件頁數(shù)： | 9/32頁 |
| 文件大?。?/td> | 790K |
| 代理商： | LTC2260IUJ-12#TRPBF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
LTC2261-12
LTC2260-12/LTC2259-12
17
226112fa
CONVERTER OPERATION
The LTC2261-12/LTC2260-12/LTC2259-12 are low power
12-bit 125Msps/105Msps/80Msps A/D converters that are
powered by a single 1.8V supply. The analog inputs should
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. There
should be 180° phase difference between the inputs.
INPUT DRIVE CIRCUITS
Input Filtering
If possible, there should be an RC lowpass lter right at
the analog inputs. This lowpass lter isolates the drive
circuitry from the A/D sample-and-hold switching, and
also limits wideband noise from the drive circuitry. Figure 3
shows an example of an input RC lter. The RC component
values should be chosen based on the application’s input
frequency.
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
CSAMPLE
3.5pF
RON
25Ω
RON
25Ω
VDD
LTC2261-12
AIN
+
226112 F02
CSAMPLE
3.5pF
VDD
AIN
–
ENC–
ENC+
1.2V
10k
1.2V
10k
CPARASITIC
1.8pF
CPARASITIC
1.8pF
10Ω
25Ω
50Ω
0.1μF
AIN
+
AIN
–
12pF
0.1μF
VCM
LTC2261-12
ANALOG
INPUT
0.1μF
T1
1:1
T1: MA/COM MABAES0060
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
226112 F03
Figure 2. Equivalent Input Circuit
Figure 3. Analog Input Circuit Using a Transformer.
Recommended for Input Frequencies from 5MHz to 70MHz
APPLICATIONS INFORMATION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2260IUJ-12#PBF | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2260CUJ-12#TRPBF | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2260CUJ-12#PBF | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2259IUJ-14#PBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2260CUJ-14#PBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2260IUJ-14#PBF | 功能描述:IC ADC 14-BIT 105MSPS 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:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 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-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| LTC2260IUJ-14#TRPBF | 功能描述:IC ADC 14BIT 105MSPS 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 |
| LTC2260IUJ-14-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 125/105/80Msps Ultralow Power 1.8V ADCs |
| LTC2260IUJ-14-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 125/105/80Msps Ultralow Power 1.8V ADCs |
| LTC2260UJ-12 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:12-Bit, 125/105/80Msps Ultralow Power 1.8V ADCs |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。