ADCMP561 Datasheet, PDF (13/16 Pages) Analog Devices – Dual High Speed PECL Comparators

TYPICAL APPLICATION CIRCUITS
V_IN
V_REF
ADCMP561/
ADCMP562
OUTPUTS
LATCH
ENABLE
INPUTS
V_DD – 2V
ALL RESISTORS 50Ω
Figure 22. High Speed Sampling Circuits
+V_REF
V_IN
ADCMP561/
ADCMP562
OUTPUTS
–V_REF
ADCMP561/
ADCMP562
V_DD –2V
OUTPUTS
LATCH
ENABLE
INPUTS
V_DD –2V
ALL RESISTORS 50Ω UNLESS OTHERWISE NOTED
Figure 23. High Speed Window Comparator
ADCMP561/ADCMP562
V_IN
V_REF
ADCMP562
HYS
OUTPUTS
0Ω TO 80kΩ
V_DD – 2.0V
ALL RESISTORS 50Ω, UNLESS OTHERWISE NOTED
Figure 24. Adding Hysteresis Using the HYS Control Pin
V_IN
ADCMP561/
ADCMP562
50Ω
50Ω
50Ω
50Ω
100Ω
100Ω
(V_DD – 2V) × 2
Figure 25. How to Interface a PECL Output to an
Instrument with a 50 Ω to Ground Input
Rev. A | Page 13 of 16