AD8468

Data Sheet Rail-to-Rail, Fast, Low Power 2.5 V to 5.5 V, Single-Supply TTL/CMOS Comparator AD8468 FEATURES Fully specified rail to rail at VCC = 2.5 V to 5.5 V Input common-mode voltage from −0.2 V to VCC + 0.2 V Low glitch CMOS-/TTL-compatible output stage 40 ns propagation delay Low power: 2 mW at 2.5 V Shutdown pin Power supply rejection > 60 dB −40°C to +125°C operation Qualified for automotive applications APPLICATIONS Automotive applications High speed instrumentation Clock and data signal restoration Logic level shifting or translation High speed line receivers Threshold detection Peak and zero-crossing detectors High speed trigger circuitry Pulse-width modulators Current-/voltage-controlled oscillators GENERAL DESCRIPTION The AD8468 is a fast comparator fabricated on XFCB2.0, an Analog Devices, Inc., proprietary process. This comparator is exceptionally versatile and easy to use. Features include an input range from −0.2 V to VCC + 0.2 V, low noise, TTL-/CMOScompatible output drivers, and shutdown inputs. The device offers 40 ns propagation delays driving a 15 pF load with 10 mV overdrive on 500 µA typical supply current. A flexible power supply scheme allows the device to operate with a single 2.5 V positive supply with a −0.2 V to + 2.7 V input signal range and up to a 5.5 V positive supply with a −0.2 V to +5.7 V input signal range. FUNCTIONAL BLOCK DIAGRAM NONINVERTING INPUT INVERTING INPUT + AD8468 – SDN Figure 1. Q OUTPUT 08853-001 The TTL-/CMOS-compati...