THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS JUNE 1993 DS2427 - 1.0 REF50Z/REF50D 5V MICROPOWER PRECISION REFERENCE The REF50Z and REF50D are integrated circuits using the bandgap principle to provide a precise stable reference voltage of 5V. There are two package options available: REF50Z in a plastic 3-pin TO-92 and REF50D in a miniature surface mount package (MP8). These references feature a recommended operating current of 60µA to 5mA which make them ideal for all low power and battery applications. FEATURES ■ Low Knee Current - typically 40 microamps ■ Ideal for Battery Operation - 300 microwatts ■ Internally Shaped ■ REF50Z - 3 lead TO-92 Plastic Package ■ REF50D - Miniature Plastic Surface Mount Package (MP8) ■ Tight Initial VREF Tolerance ±1.5% ■ Low Temperature Coefficient ■ Low Slope Resistance ■ Operation over Industrial Temperature Range Fig.1 Pin connection ORDERING INFORMATION Device Type Operating Temperature Package REF50Z -40°C to +85°C TO-92 REF50D -40°C to +85°C MP8 ABSOLUTE MAXIMUM RATINGS Reference current 5mA Operating temperature range: REF50Z -40 to +85°C REF50D -40 to +85°C Storage temperature -55 to +125°C Storage temperature for a max. time of 10ns: within 1.59mm of seating plane 300°C within 0.80mm of seating plane 265°C Fig.2 Internal connections REF50Z/50D ELECTRICAL CHARACTERISTICS Test conditions (unless otherwise stated) Tamb = 25°C, IREF = 150µA Value Characteristics Symbol Output voltage VREF Slope resistance (Note 1) RREF Units Min. Typ. Max. 4.925 5.00 5.075 V 3.0 3.5 Ω 3.0 Turn-on (knee) current ION Recommended operating IREF 3.5 REF 50Z REF50D IREF = 150µA to 5mA µA 40 0.06 Ω Conditions 5.0 µA 110 ppm/°C current range Temperature coefficient TC VREF 35 REF25Z Note 2 (Note 2) 35 80 ppm/°C RMS noise voltage EN 13 µV Turn-on time TON 80 µs Turn-off time TOFF 7 µs Turn-on time TON 65 µs TOFF 2 µs Turn-off time REF25D 1kHz tp 10kHz IREF = 500µA NOTES 1. Slope resistance (RREF) Slope resistance is defined as RREF = Change in VREF over a specified current range The change in reference current 2. Reference voltage temperature coefficient (TC VREF) This is the normalised reference voltage change over temperature, divided by the change in temperature. It is expressed in ppm/°C TC VREF = ∆VREF X 106 ppm/°C VREF X ∆T ∆T = temperature change in °C ∆VREF = change in reference voltage over temperature change ∆T 2 REF50Z/50D Fig.3 Connections diagram 3 REF50Z/50D Fig.4 Typical reference characterics Fig.5 Typical temperature at IREF = 150µA 4 REF50Z/50D Fig.6 Typical dynamic impedance at IREF = 5mA 5 REF50Z/50D Fig.7 Typical response time (not to scale) Fig.7 Typical response time (not to scale) 6 REF50Z/50D 7 REF50Z/50D 8-LEAD MINIATURE PLASTIC DIL - MP8 3-LEAD PLASTIC-TO-92 HEADQUARTERS OPERATIONS GEC PLESSEY SEMICONDUCTORS Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (0793) 518000 Fax: (0793) 518411 GEC PLESSEY SEMICONDUCTORS Sequoia Research Park, 1500 Green Hills Road, Scotts Valley, California 95066, United States of America. Tel: (408) 438 2900 Fax: (408) 438 5576 CUSTOMER SERVICE CENTRES • FRANCE & BENELUX Les Ulis Cedex Tel: (1) 64 46 23 45 Tx: 602858F Fax : (1) 64 46 06 07 • GERMANY Munich Tel: (089) 3609 06-0 Tx: 523980 Fax : (089) 3609 06-55 • ITALY Milan Tel: (02) 66040867 Fax: (02) 66040993 • JAPAN Tokyo Tel: (03) 3296-0281 Fax: (03) 3296-0228 • NORTH AMERICA Integrated Circuits and Microwave Products Scotts Valley, USA Tel (408) 438 2900 Fax: (408) 438 7023. Hybrid Products, Farmingdale, USA Tel (516) 293 8686 Fax: (516) 293 0061. • SOUTH EAST ASIA Singapore Tel: (65) 3827708 Fax: (65) 3828872 • SWEDEN Stockholm, Tel: 46 8 702 97 70 Fax: 46 8 640 47 36 • UNITED KINGDOM & SCANDINAVIA Swindon Tel: (0793) 518510 Tx: 444410 Fax : (0793) 518582 These are supported by Agents and Distributors in major countries world-wide. GEC Plessey Semiconductors 1993 Publication No. DS2427 Issue No. 1.0 June 1993 This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company reserves the right to alter without prior knowledge the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request. 8