ADCMP551BRQ

单电源，高速PECL / LVPECL比较 Single-Supply, High Speed PECL/LVPECL Comparators

Product Details

The ADCMP551/ADCMP552/ADCMP553 are single supply, high speed comparators fabricated on Analog Devices’ proprietary XFCB process. The devices feature a 750 ps propagation delay with less than 150 ps overdrive dispersion. Dispersion, a measure of the difference in propagation delay under differing overdrive conditions, is a particularly important characteristic of high speed comparators. A separate programmable hysteresis pin is available on the ADCMP552.

A differential input stage permits consistent propagation delay with a common-mode range from –0.2 V to VCCI – 2.0 V. Outputs are complementary digital signals are fully compatible with PECL 10 K and 10 KH logic families. The outputs provide sufficient drive current to directly drive transmission lines terminated in 50 Ω to VCCO - 2 V. A latch input is included and permits tracking, track-and-hold, or sample-and-hold modes of operation. The latch input pins contain internal pullups that set the latch in tracking mode when left open.

The ADCMP551/ADCMP552/ADCMP553 are specified over the –40°C to +85°C industrial temperature range. The ADCMP551 is available in a 16-lead QSOP package; the ADCMP552 is available in a 20-lead QSOP package; and the ADCMP553 is available in an 8-lead MSOP package.

### Features and Benefits

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Single Power Supply 

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750 ps Propagation Delay Input to Output 

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100 ps Propagation Delay Dispersion 

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Differential PECL Compatible Outputs 

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Differential Latch Control 

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Internal Latch Pull-up Resistors

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750 ps Minimum Pulse Width 

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Power Supply Rejection Greater than 70 dB 

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Equivalent Input Rise Time Bandwidth > 750 MHz 

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Typical Output Rise/Fall of 500 ps 

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Programmable Hysteresis