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SC2245、LTC2245、LTC2246 、LTC2247 、LTC2248 、LTC2249管腳配置及功能說(shuō)明




SC2245替代LTC2245、LTC2246 、LTC2247 、LTC2248 、LTC2249
產(chǎn)品概況
SC2245 是一款 14 位 80/40/25/10MSps 低功耗 3V 電源供電的模數(shù)轉(zhuǎn)換器，專為數(shù)字化高頻寬動(dòng)態(tài)范圍信號(hào)而設(shè)計(jì)。SC2245 非常適合要求苛刻的成像和通信應(yīng)用，其交流性能，包括 80MHz采樣下 72.83dB 信噪比和 85dB 無(wú)雜散動(dòng)態(tài)范圍，用于遠(yuǎn)遠(yuǎn)超過(guò)奈奎斯特頻率的信號(hào)。直流規(guī)格包括±1LSB INL（典型值），±0.25LSB DNL（典型值）和無(wú)漏失碼。輸入端參考噪聲很低，僅為0.96LSBRMS。一個(gè)單獨(dú)的輸出電源使輸出能驅(qū)動(dòng) 0.5V 至 3.6V 邏輯電路.
一個(gè)單端 CLK 輸入負(fù)責(zé)控制轉(zhuǎn)換器運(yùn)作。一個(gè)任選的時(shí)鐘占空比穩(wěn)定器在全速和多種時(shí)鐘占空比條件下實(shí)現(xiàn)了高性能。




主要性能
? 3V 電源供電
? 靈活輸入范圍：1VP-P to 2VP-P
? 0.5V 至 3.3V 輸出電源
? 低功耗： 60mW (10MSPS)
218mW(80MSPS)
? 80MHz 采樣，30.5MHz 輸入：
信噪比(SNR):72.83dBFS
無(wú)雜散動(dòng)態(tài)范圍(SFDR):85.62dBFS
? 微分非線性(DNL)：±0.25LSB(典型值)
? 輸入端參考噪聲：0.96LSBRMS
? 片內(nèi)基準(zhǔn)電壓源和采樣保持電路
? 兼容 ADI 的 LTC2249/2247/2246/2245
? QFN-32 封裝 5mm×5mm
應(yīng)用場(chǎng)合
? 無(wú)線和有線寬帶通信
? 成像系統(tǒng)
? 光譜分析
? 便攜式儀器智能天線系統(tǒng)
? 手持式示波器
? 功能模塊示意圖：
SC2245管腳配置及功能說(shuō)明：




PART NUMBER DESCRIPTION COMMENTS
LTC1748 14-Bit, 80Msps, 5V ADC 76.3dB SNR, 90dB SFDR, 48-Pin TSSOP Package
LTC1750 14-Bit, 80Msps, 5V Wideband ADC Up to 500MHz IF Undersampling, 90dB SFDR
LT1993-2 High Speed Differential Op Amp 800MHz BW, 70dBc Distortion at 70MHz, 6dB Gain
LT1994 Low Noise, Low Distortion Fully Differential Low Distortion: –94dBc at 1MHz
Input/Output Amplifier/Driver
LTC2202 16-Bit, 10Msps, 3.3V ADC, Lowest Noise 150mW, 81.6dB SNR, 100dB SFDR, 48-Pin QFN
LTC2208 16-Bit, 130Msps, 3.3V ADC, LVDS Outputs 1250mW, 78dB SNR, 100dB SFDR, 64-Pin QFN
LTC2220-1 12-Bit, 185Msps, 3.3V ADC, LVDS Outputs 910mW, 67.7dB SNR, 80dB SFDR, 64-Pin QFN
LTC2224 12-Bit, 135Msps, 3.3V ADC, High IF Sampling 630mW, 67.6dB SNR, 84dB SFDR, 48-Pin QFN
LTC2225 12-Bit, 10Msps, 3V ADC, Lowest Power 60mW, 71.3dB SNR, 90dB SFDR, 32-Pin QFN
LTC2226 12-Bit, 25Msps, 3V ADC, Lowest Power 75mW, 71.4dB SNR, 90dB SFDR, 32-Pin QFN
LTC2227 12-Bit, 40Msps, 3V ADC, Lowest Power 120mW, 71.4dB SNR, 90dB SFDR, 32-Pin QFN
LTC2228 12-Bit, 65Msps, 3V ADC, Lowest Power 205mW, 71.3dB SNR, 90dB SFDR, 32-Pin QFN
LTC2229 12-Bit, 80Msps, 3V ADC, Lowest Power 211mW, 70.6dB SNR, 90dB SFDR, 32-Pin QFN
LTC2236 10-Bit, 25Msps, 3V ADC, Lowest Power 75mW, 61.8dB SNR, 85dB SFDR, 32-Pin QFN
LTC2237 10-Bit, 40Msps, 3V ADC, Lowest Power 120mW, 61.8dB SNR, 85dB SFDR, 32-Pin QFN
LTC2238 10-Bit, 65Msps, 3V ADC, Lowest Power 205mW, 61.8dB SNR, 85dB SFDR, 32-Pin QFN
LTC2239 10-Bit, 80Msps, 3V ADC, Lowest Power 211mW, 61.6dB SNR, 85dB SFDR, 32-Pin QFN
LTC2245 14-Bit, 10Msps, 3V ADC, Lowest Power 60mW, 74.4dB SNR, 90dB SFDR, 32-Pin QFN
LTC2246 14-Bit, 25Msps, 3V ADC, Lowest Power 75mW, 74.5dB SNR, 90dB SFDR, 32-Pin QFN
LTC2247 14-Bit, 40Msps, 3V ADC, Lowest Power 120mW, 74.4dB SNR, 90dB SFDR, 32-Pin QFN
LTC2248 14-Bit, 65Msps, 3V ADC, Lowest Power 205mW, 74.3dB SNR, 90dB SFDR, 32-Pin QFN
LTC2249 14-Bit, 80Msps, 3V ADC, Lowest Power 222mW, 73dB SNR, 90dB SFDR, 32-Pin QFN
LTC2250 10-Bit, 105Msps, 3V ADC, Lowest Power 320mW, 61.6dB SNR, 85dB SFDR, 32-Pin QFN
LTC2251 10-Bit, 125Msps, 3V ADC, Lowest Power 395mW, 61.6dB SNR, 85dB SFDR, 32-Pin QFN
LTC2252 12-Bit, 105Msps, 3V ADC, Lowest Power 320mW, 70.2dB SNR, 88dB SFDR, 32-Pin QFN
LTC2253 12-Bit, 125Msps, 3V ADC, Lowest Power 395mW, 70.2dB SNR, 88dB SFDR, 32-Pin QFN
LTC2254 14-Bit, 105Msps, 3V ADC, Lowest Power 320mW, 72.4dB SNR, 88dB SFDR, 32-Pin QFN
LTC2255 14-Bit, 125Msps, 3V ADC, Lowest Power 395mW, 72.5dB SNR, 88dB SFDR, 32-Pin QFN
LTC2284 14-Bit, Dual, 105Msps, 3V ADC, Low Crosstalk 540mW, 72.4dB SNR, 88dB SFDR, 64-Pin QFN
LT5512 DC-3GHz High Signal Level Downconverting Mixer DC to 3GHz, 21dBm IIP3, Integrated LO Buffer
LT5514 Ultralow Distortion IF Amplifier/ADC Driver 450MHz to 1dB BW, 47dB OIP3, Digital Gain Control
with Digitally Controlled Gain 10.5dB to 33dB in 1.5dB/Step
LT5515 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator High IIP3: 20dBm at 1.9GHz,
Integrated LO Quadrature Generator
LT5516 800MHz to 1.5GHz Direct Conversion Quadrature Demodulator High IIP3: 21.5dBm at 900MHz,
Integrated LO Quadrature Generator
LT5517 40MHz to 900MHz Direct Conversion Quadrature Demodulator High IIP3: 21dBm at 800MHz,
Integrated LO Quadrature Generator
LT5522 600MHz to 2.7GHz High Linearity Downconverting Mixer 4.5V to 5.25V Supply, 25dBm IIP3 at 900MHz,
NF = 12.5dB, 50? Single-Ended RF and LO Ports