AD8612

Data Sheet FEATURES 4 ns propagation delay at 5 V Single-supply operation: 3 V to 5 V 100 MHz input Latch function APPLICATIONS High speed timing Clock recovery and clock distribution Line receivers Digital communications Phase detectors High speed sampling Read channel detection PCMCIA cards Zero-crossing detector High speed analog-to-digital converter (ADC) Upgrade for LT1394 and LT1016 designs GENERAL DESCRIPTION The AD8611/AD8612 are single and dual 4 ns comparators with latch function and complementary output. The latch is not functional if VCC is less than 4.3 V. Fast 4 ns propagation delay makes the AD8611/AD8612 good choices for timing circuits and line receivers. Propagation delays for rising and falling signals are closely matched and tracked over temperature. This matched delay makes the AD8611/AD8612 good choices for clock recovery because the duty cycle of the output matches the duty cycle of the input. Ultrafast, 4 ns Single-Supply Comparators AD8611/AD8612 PIN CONFIGURATIONS V+ 1 8 QA IN+ 2 AD8611 7 QA IN– 3 TOP VIEW 6 GND V– 4 (Not to Scale) 5 LATCH 06010-001 Figure 1. 8-Lead Narrow Body SOIC (R-8) 06010-002 V+ 1 IN+ 2 IN– 3 V– 4 AD8611 TOP VIEW (Not to Scale) 8 QA 7 QA 6 GND 5 LATCH Figure 2. 8-Lead MSOP (RM-8) QA 1 QA 2 GND 3 LEA 4 V– 5 INA– 6 INA+ 7 14 QB AD8612 TOP VIEW (Not to Scale) 13 QB 12 GND 11 LEB 10 V+ 9 INB– 8 INB+ Figure 3. 14-Lead TSSOP (RU-14) 06010-003 The AD8611 has the same pinout as the LT1016 and LT1394, with lower su...