IC datasheet pdf-REF200,pdf(Dual Current Source_Current Sink).pdfVIP

? 1988 Burr-Brown Corporation PDS-851D Printed in U.S.A. October, 1993 FEATURES● COMPLETELY FLOATING: No Power Supply or Ground Connections● HIGH ACCURACY: 100μA ±0.5%● LOW TEMPERATURE COEFFICIENT: ±25ppm/°C● WIDE VOLTAGE COMPLIANCE: 2.5V to 40V● ALSO INCLUDES CURRENT MIRROR APPLICATIONS● SENSOR EXCITATION● BIASING CIRCUITRY● OFFSETTING CURRENT LOOPS● LOW VOLTAGE REFERENCES● CHARGE-PUMP CIRCUITRY● HYBRID MICROCIRCUITS REF200 DUAL CURRENT SOURCE/CURRENT SINK DESCRIPTION The REF200 combines three circuit building-blocks on a single monolithic chip—two 100μA current sources and a current mirror. The sections are dielectrically isolated, making them completely independent. Also, since the current sources are two- terminal devices, they can be used equally well as current sinks. The performance of each section is individually measured and laser-trimmed to achieve high accuracy at low cost. The sections can be pin-strapped for currents of 50μA, 100μA, 200μA, 300μA or 400μA. External circuitry can be used to obtain virtually any current. These and many other circuit techniques are shown in the Applications section of this Data Sheet. The REF200 is available in plastic 8-pin mini-DIP and SOIC packages. I High I High Substrate Mirror In I Low I Low Mirror Out Mirror Common 1 2 1 2 8 7 6 5 1 2 3 4 100μA 100μA ? International Airport Industrial Park ? Mailing Address: PO Box 11400, Tucson, AZ 85734 ? Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 ? Tel: (520) 746-1111 ? Twx: 910-952-1111 Internet: / ? FAXLine: (800) 548-6133 (US/Canada Only) ? Cable: BBRCORP ? Telex: 066-6491 ? FAX: (520) 889-1510 ? Immediate Product Info: (800) 548-6132 REF200 REF200 SBVS020 ?REF200 2 SPECIFICATIONS At T A = +25°C, V S = 15V, unless otherwise noted. REF200AP, AU PARAMETER CONDITION MIN TYP MAX UNITS CURRENT SOURCES Current Accuracy ±0.25 ±1 % Current Match ±0.25 ±1 % Temperature Drift Specified Temp Range 25 ppm/°C Output Impedance 2.5V to 40V 20 100 M? 3.5V