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| PRECISION 5.0 VOLT MICROPOWER VOLTAGE REFERENCE ISSUE 1 - OCTOBER 1995 DEVICE DESCRIPTION The ZRB500 uses a bandgap circuit design to achieve a precision micropower voltage reference of 5.0 volts. The device is available in small outline surface mount packages, ideal for applications where space saving is important, as well as packages for through hole requirements. The ZRB500 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRB500 is recommended for operation between 50A and 15mA and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to a suggested absolute maximum of 25mA, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds. FEATURES ZRB500 * * * * * * * * * * * * * * * Small outline SOT23,SO8 and TO92 style packages No stabilising capacitor required Typical TC 15ppm/ C Typical slope resistance 0.33 3%, 2% and 1% tolerance Industrial temperature range Operating current 50A to 15mA Transient response, stable in less than 10s APPLICATIONS Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Test equipment. Data acquisition systems. Precision power supplies. SCHEMATIC DIAGRAM V R G nd 1 - 36 ZRB500 ABSOLUTE MAXIMUM RATING Reverse Current Forward Current Operating Temperature Storage Temperature 25mA 25mA -40 to 85C -55 to 125C Power Dissipation (Tamb=25C) SOT23 330mW E-Line, 3 pin (TO92) 500mW E-Line, 2 pin (TO92) 500mW SO8 625mW ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25C SYMBOL PARAMETER CONDITIONS MIN VR Reverse Breakdown Voltage IR=150A 4.95 4.90 4.85 0.05 15 LIMITS TYP MAX 5.0 5.0 5.0 30 5.05 5.10 5.15 50 15 50 1 2 3 V TOL. % UNITS IMIN IR TC RS ZR Minimum Operating Current Recommended Operating Current Average Reverse Breakdown Voltage Temp. Co. Slope Resistance Reverse Dynamic Impedance IR(min) to IR(max) IR = 1mA f = 100Hz IAC= 0.1 IR IR = 150A f = 10Hz to 10kHZ A mA ppm/C 0.33 1.5 0.4 1 EN Wideband Noise Voltage 100 V(rms) 60 VR x Temperature Change Reverse Current (A) TC = VR Change x 1000000 50 40 30 20 10 0 0 2.0 4.0 6.0 T)=85C RS = VR Change (IR (min) to IR (max)) IR (max) - IR (min) T)=-40C Reverse Voltage (V) Reverse Characteristics 1 - 37 ZRB500 TYPICAL CHARACTERISTICS 1.6 5.02 IR=150A to 15mA 1.4 Reference voltage (V) 0.1 1 10 100 1000 Forward Voltage (V) 1.2 5.00 1.0 0.8 4.98 0.6 0.4 4.96 -40 -20 0 20 40 60 80 Forward Current (mA) Temperature (C) Forward Characteristics Temperature Drift 3.0 1000 I4=150A Slope resistance () 2.0 Slope resistance () 100 I4=5mA 10 TA=-40C 1.0 TA=25C 1 TA=85C 0 0.1 1 10 100 0.1 0.01 0.1 Reference Current (mA) Frequency (kHz) 1 10 100 Slope Resistance v Current 6.0 6.0 Slope Resistance v Frequency 4.0 5 mA 4.0 VR - (V) VR - (V) VIN VIN 2.0 150 A 1K 5mA 33K 150A VR 2.0 1K 5mA 33K 150A VR 0 10 0 10 - (V) VI 0 Transient Response (Single Pulse) Time (s) 500 1000 VI N 0 - (V) N 0 0 1 Transient Response (Repetitive Pulse) Time (s) 2 3 4 1 - 38 ZRB500 CONNECTION DIAGRAMS E-Line, 2 pin Package Suffix Y E-Line, 3 pin,Rev Package Suffix R Bottom View Bottom View Pin 3 floating or connected to pin 1 E-Line, 3 pin Package Suffix A SO8 Package Suffix N8 Bottom View Pin 1 floating or connected to pin 3 Top View SOT23 Package Suffix F Top View Pin 1 floating or connected to pin 2 ZRB500 ORDERING INFORMATION Part No ZRB500A03 ZRB500A02 ZRB500A01 ZRB500F03 ZRB500F02 ZRB500F01 ZRB500N803 ZRB500N802 ZRB500N801 Tol% Package 3 2 1 3 2 1 3 2 1 E-Line * E-Line * E-Line * SOT23 SOT23 SOT23 SO8 SO8 SO8 Partmark ZRB50003 ZRB50002 ZRB50001 50G 50H 50I ZRB50003 ZRB50002 ZRB50001 Part No ZRB500R03 ZRB500R02 ZRB500R01 ZRB500Y03 ZRB500Y02 ZRB500Y01 Tol% Package 3 2 1 3 2 1 E-Line * E-Line * E-Line * E-Line E-Line E-Line Partmark ZRB500R3 ZRB500R2 ZRB500R1 ZRB50003 ZRB50002 ZRB50001 * E-Line 3 pin Reversed E-Line 2 pin * E-Line 3 pin |
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