Serial Digital Controlled Variable Gain Line Driver

DESCRIPTION The AD8320 is a digitally controlled variable gain amplifier optimized for coaxial line driving applications. An 8-bit serial word determines the desired output gain over a 36 dB range (256 gain levels). The AD8320 provides linear gain response. The AD8320 is made up of a digital

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高性能、高輸出功率線路驅(qū)動(dòng)器，具有36dB數(shù)字控制可變?cè)鲆?/p>

AD8320是一款數(shù)字控制式可變?cè)鲆娣糯笃?，并針?duì)同軸線路驅(qū)動(dòng)應(yīng)用進(jìn)行了優(yōu)化。所需輸出增益由8比特串行字決定，輸出增益范圍為36 dB(256增益級(jí))。此外還提供線性增益響應(yīng)。AD8320內(nèi)置0 dB至–36 dB的數(shù)字控制式可變衰減器，衰減器前面接低噪聲、固定增益緩沖器，后面接低失真、高功率放大器。該器件具有220 Ω輸入阻抗，接受單端輸入信號(hào)，額定模擬輸入電平最高達(dá)0.310 V 峰峰值。輸出可驅(qū)動(dòng)75 Ω額定負(fù)載，如同軸電纜等，不過也可驅(qū)動(dòng)其它負(fù)載。在42 MHz、輸出電平最高為12 dBm (3.1 V峰峰值)時(shí)，失真性能可達(dá)–57 dBc，而在輸出電平最高為18 dBm (6.2 V ? 8比特串行增益控制\n V/V/LSB線性增益響應(yīng)\n\n? 增益范圍：36 dB\n增益精度：±0.20 dB\n\n? 上行帶寬：150 MHz\n\n? 單電源供電：5 V至12 V\n\n\n\n? 在上電和關(guān)斷情況下可保持75 Ω輸出阻抗\n\n? 1 dB壓縮點(diǎn)：22 dBm (75 Ω)\n\n? 驅(qū)動(dòng)低失真信號(hào)至75 Ω負(fù)載： \n SFDR： –57 dBc (42 MHz和12 dBm輸出)\n SFDR： –46 dBc (42 MHz和18 dBm輸出)\n\n? 支持SPI輸入控制標(biāo)準(zhǔn);

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Serial Digital Controlled Variable Gain Line Driver

DESCRIPTION The AD8320 is a digitally controlled variable gain amplifier optimized for coaxial line driving applications. An 8-bit serial word determines the desired output gain over a 36 dB range (256 gain levels). The AD8320 provides linear gain response. The AD8320 is made up of a digital

文件：583.09 Kbytes 頁數(shù)：20 Pages

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Serial Digital Controlled Variable Gain Line Driver

DESCRIPTION The AD8320 is a digitally controlled variable gain amplifier optimized for coaxial line driving applications. An 8-bit serial word determines the desired output gain over a 36 dB range (256 gain levels). The AD8320 provides linear gain response. The AD8320 is made up of a digital

文件：583.09 Kbytes 頁數(shù)：20 Pages

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Serial Digital Controlled Variable Gain Line Driver

文件：585.01 Kbytes 頁數(shù)：20 Pages

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Serial Digital Controlled Variable Gain Line Driver

DESCRIPTION\nThe AD8320 is a digitally controlled variable gain amplifier optimized for coaxial line driving applications. An 8-bit serial word determines the desired output gain over a 36 dB range (256 gain levels). The AD8320 provides linear gain response.\nThe AD8320 is made up of a digitally con ? 8-Bit Serial Gain Control\n???? V/V/LSB Linear Gain Response\n? 36 dB Gain Range\n???? ±0.20 dB Gain Accuracy\n? Upper Bandwidth: 150 MHz\n? 22 dBm 1 dB Compression Point (75 V)\n? Drives Low Distortion Signals into 75 V Load:\n???? –57 dBc SFDR at 42 MHz and 12 dBm Out\n???? –46 dBc SFDR at 42 MH;

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