ADCMP561

双路高速PECL比较器 Dual High Speed PECL Comparators

Product Details

The /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**

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Automatic test equipment

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High speed instrumentation

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Scope and logic analyzer front ends

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Window comparators

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High speed line receivers

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Threshold detection

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Peak detection

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High speed triggers

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Patient diagnostics

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Disk drive read channel detection

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Hand-held test instruments

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Zero-crossing detectors

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Line receivers and signal restoration

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Clock drivers

### Features and Benefits

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Differential PECL-compatible outputs 

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700 ps propagation delay input to output 

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75 ps propagation delay dispersion

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

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Robust input protection 

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Differential latch control 

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Internal latch pull-up resistors 

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Power supply rejection greater than 85 dB 

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700 ps minimum pulse width

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1.5 GHz equivalent input rise time bandwidth 

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Typical output rise/fall time of 500 ps 

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ESD protection > 4 kV HBM, >200 V MM 

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Programmable hysteresis