ADCMP562BRQZ

GENERAL DESCRIPTION

The ADCMP561/ADCMP562 are high speed comparators fabricated on Analog Devices’ 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).

FEATURES

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 > 4kV HBM, >200V MM
Programmable hysteresis

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