903 MAXWELL | Alldatasheet

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All data sheets are subject to change without notice (858)503-3000 Fax:(858)503-3301 www.maxwell.com ©2002 Maxwell Technologies All rights reserved.

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FEATURES :

  • High-speed, low-power voltage comparator  R AD -PAK ® radiation-hardened against natural space radiation  Total dose hardness: 100 krad (Si) typical; dependent upon orbit  8ns typ propagation delay  18mW power consumption (typ at +5V)  Separate analog and digital supplies  Flexible analog supply: +5V to +10V or ±5V  Input range includes negative supply rail  TTL compatible outputs  TTL compatible latch inputs D ESCRIPTION : Maxwell Technologies’ 903 high-speed, low- power voltage comparator features differential analog inputs and TTL logic outputs with active internal pull-ups. The 903 can be pow- ered from separate analog and digital power supplies or from a single combined supple voltage. The analog input common-mode range includes the negative rail, allowing ground sensing when powered from a single supply. When powered from +5V, the 903 con- sumes 18mW. The 903 is equipped with a TTL compatible latch input. The comparator output is latched when the latch input is driven low. Capable of surviving space environments, the 903 is ideal for satellite, spacecraft, and space probe missions. Maxwell Technologies’ pat- ented R AD -PAK ® packaging technology incor- porates radiation shielding in the microcircuit package. It eliminates box shielding while pro- viding lifetime in orbit or space mission. In GEO orbit, RAD-PAK® provides greater than 100 krad(Si) radiation dose rate. This product is available with screening up to Class S. VCC VEE IN+ IN- VDD LA TCH OU T GND

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TABLE 1. PINOUT DESCRIPTION

2 IN+ Positive input

3 IN- Negative input

5 LATCH Latch input

6 GND Ground terminal

7 OUT Output

TABLE 2. ABSOLUTE M AXIMUM RATINGS TABLE 3. AC ELECTRICAL CHARACTERISTICS

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  1. Owing to the difficult and critical nature of switching measurements involving the latch, these parameters cannot

TABLE 4. DC ELECTRICAL CHARACTERISTICS TABLE 3. AC ELECTRICAL CHARACTERISTICS

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  1. The input common-mode voltage or either input signal voltage should not be allowed to go negative by

either or both inputs can go to a maximum of VCC +0.2V without damage. power-supply range is +4.75V<VCC <+10.5V for single-supply operation with VEE grounded. TABLE 4. DC ELECTRICAL CHARACTERISTICS

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FIGURE 1. INPUT OFFSET VOLTAGE VS . TEMPERATURE FIGURE 2. INPUT BIAS CURRENT VS . TEMPERATURE

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FIGURE 3. OUTPUT LOW VOLTAGE (VOL ) VS . LOAD CURRENT FIGURE 4. ICC SUPPLY CURRENT (PER COMPARATOR ) VS . VCC SUPPLY VOLTAGE (VDD = +5V)

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FIGURE 5. INPUT OVERDRIVE VS . tpd+ RESPONSE TIME FIGURE 6. INPUT OVERDRIVE VS . tpd- RESPONSE TIME

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FIGURE 7. RESPONSE TIME VS . TEMPERATURE (5M V O VERDRIVE ) FIGURE 8. RESPONSE TIME VS . LOAD CAPACITANCE

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FIGURE 9. TIMING DIAGRAM

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FIGURE 10. tpd+ RESPONSE TIME TO 5mV OVERDRIVE

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FIGURE 11. tpd- RESPONSE TIME TO 5m V O

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FIGURE 12. RESPONSE -TIME SETUP

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TABLE 13. 8 LEAD RAD-PAK F LAT PACKAGE

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©2002 Maxwell TechnologiesAll rights reserved. High-Speed Comparator903 Important Notice: These data sheets are created using the chip manufacturer’s published specifications. Maxwell Technologies verifies functionality by testing key parameters either by 100% testing, sample testing or characterization. The specifications presented within these data sheets represent the latest and most accurate information available to date. However, these specifications are subject to change without notice and Maxwell Technologies assumes no responsibility for the use of this information. Maxwell Technologies’ products are not authorized for use as critical components in life support devices or systems without express written approval from Maxwell Technologies. Any claim against Maxwell Technologies must be made within 90 days from the date of shipment from Maxwell Tech- nologies. Maxwell Technologies’ liability shall be limited to replacement of defective parts. Product Ordering Information

903 RP F X FEATURE O PTION DETAILS

SCREENING FLOW M ONOLYTHIC S = MAXWELL CLASS S B = MAXWELL CLASS B I = INDUSTRIAL (-55C TO +125C) E = ENGINEERING (+25C) PACKAGE F = FLAT PACKAGE R ADIATION FEATURE RP = RAD -PAK PACKAGE BASE PRODUCT N OMENCLATURE H IGH SPEED COMPARATOR