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ADCMP561

Analog Devices

ADCMP561 RSS Sample
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ADCMP561
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ANALOG DEVICES
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Dual High Speed PECL Comparator 16 - Lead QSOP

* Differential PECL-compatible outputs

* 700 ps propagation delay input to output

* 75 ps propagation delay dispersion

* Input common-mode range: –2.0 V to +3.0 V

* Robust input protection

* Differential latch control

* Internal latch pull-up resistors

* Power supply rejection greater than 85 dB

* 700 ps minimum pulse width

* 1.5 GHz equivalent input rise time bandwidth

* Typical output rise/fall time of 500 ps

* ESD protection > 4 kV HBM, >200 V MM

* Programmable hysteresis

The ADCMP561/ADCMP562 are high speed comparators fabricated on Analog Devices, Inc., proprietary XFCB process. The devices feature a 700 ps propagation delay with less than 75 ps overdrive dispersion. Dispersion, a measure of the difference in propagation delay under differing overdrive conditions, is a particularly important characteristic of comparators. A separate programmable hysteresis pin is available on the ADCMP562. A differential input stage permits consistent propagation delay with a wide variety of signals in the common-mode range from −2.0 V to +3.0 V. Outputs are complementary digital signals that 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 VDD − 2 V. A latch input, which is included, permits tracking, track-and-hold, or sample-and-hold modes of operation. The latch input pins contain internal pull-ups that set the latch in tracking mode when left open. The ADCMP561/ADCMP562 are specified over the industrial temperature range (−40°C to +85°C). Applications

* Automatic test equipment

* High speed instrumentation

* Scope and logic analyzer front ends

* Window comparators

* High speed line receivers

* Threshold detection

* Peak detection

* High speed triggers

* Patient diagnostics

* Disk drive read channel detection

* Hand-held test instruments

* Zero-crossing detectors

* Line receivers and signal restoration

* Clock drivers

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