AD8469 AD [Analog Devices], AD8469 Datasheet
AD8469
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AD8469 Summary of contents
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... N INPUT HYS INPUT S INPUT DN Figure 1. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 AD8469 is a fast comparator fabricated on XFCB2, an − 0 0.2 V, low noise, TTL- and available in an 8-lead MSOP package and features Q OUTPUT Q OUTPUT www.analog.com ©2012 Analog Devices, Inc. All rights reserved. ...
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... AD8469 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ............................. 5 Typical Performance Characteristics ............................................. 6 REVISION HISTORY 1/12—Revision 0: Initial Version Applications Information .................................................................8 Power/Ground Layout and Bypassing ........................................8 TTL-/CMOS-Compatible Output Stage ...
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... V = 2.5 V VCC PSRR 2.5 V, unless otherwise noted Rev Page AD8469 Min Typ Max Unit −0 0 −0 0 −5.0 ±3 +5.0 mV −0.4 +0.4 µA −1.0 +1.0 µA 1 ...
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... AD8469 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Rating Supply Voltages, V and Ground −0 +6 Differential Supply Voltage −6 +6.0 V Analog Inputs, V and Input Voltage −0 Differential Input Voltage ±(V Maximum Input/Output Current ±50 mA Shutdown Pin Applied Voltage (S to Ground) − ...
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... Inverting Output. In compare mode logic low if the analog voltage at the noninverting input (V greater than the analog voltage at the inverting input ( AD8469 TOP VIEW (Not to Scale HYS Figure 2. Pin Configuration ). Rev Page AD8469 ) ...
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... AD8469 TYPICAL PERFORMANCE CHARACTERISTICS 25°C, unless otherwise noted 400 300 200 V = 2.5V CC 100 0 –100 –200 –300 –400 – HYS PIN VOLTAGE (V) Figure 3. HYS Pin Current vs. Voltage 2. –1 –2 +125°C –3 +25°C – ...
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... Data Sheet Q Q 0.5V/DIV Figure 9. 1 MHz Output Voltage Waveform, V 10ns/DIV 1V/DIV = 2.5 V Figure 10. 1 MHz Output Voltage Waveform Rev Page AD8469 Q Q 10ns/DIV = 5 ...
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... Note that for repeatable dispersion measurements the actual device offset is added to the overdrive. Rev Page Data Sheet V LOGIC A1 Q1 OUTPUT A2 Q2 OUTPUT STAGE TTL-/CMOS-Compatible Output Stage AD8469 is typically <12 ns − ...
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... HYS RESISTOR (kΩ) Figure 15. Hysteresis vs. HYS Resistor rail. At some predetermined point EE /2), the direction of the bias current is reversed CC elaborates slightly on this scheme. The crossover AD8469 1100 1200 1300 rail, and CC ...
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... MINIMUM INPUT SLEW RATE REQUIREMENT With the rated load capacitance and normal good PCB design (see the Power/Ground Layout and Bypassing section), the AD8469 comparator should be stable at any input slew rate with no hysteresis. Broadband noise from the input stage is observed in place of the excessive chatter that is seen with most other high speed comparators ...
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... HYS Figure 17. Duty Cycle to Differential Voltage Converter 2.5V AD8469 INPUT 1.25V ± 50mV V INPUT REF 1.25V 10kΩ ADCMP601 10kΩ 82pF Figure 18. Oscillator and Pulse-Width Modulator Rev Page OUTPUT + OUTPUT – CMOS PWM OUTPUT 10kΩ HYS 100kΩ AD8469 ...
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... AUTOMOTIVE PRODUCTS The AD8469W models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive applications ...