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| PRECISION 5.0 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE ISSUE 3 - MARCH 1998 DEVICE DESCRIPTION The ZRC500 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 ZRC500 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC500 is recommended for operation between 25A and 5mA and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to an 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. ZRC500 FEATURES * * * * * * * * * * * * * * Small outline SOT23, SO8 and TO92 style packages No stabilising capacitor required Low knee current, 19A typical Typical TC 30ppm/C Typical slope resistance 0.4 3%, 2% and 1% tolerance Industrial temperature range Operating current 25A to 5mA Transient response, stable in less than 10s Optional extended current range APPLICATIONS Battery powered and portable equipment. Instrumentation. Test equipment. Metering and measurement systems. SCHEMATIC DIAGRAM V R G nd 4-262 ZRC500 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 4.9 4.85 LIMITS TYP MAX 5.0 5.0 5.0 19 0.025 30 IR(min) to IR(max) IR = 1mA f = 100Hz IAC= 0.1 IR IR = 150A f = 10Hz to 10kHz 60 TOL. % 1 2 3 V UNITS 5.05 5.1 5.15 25 5 90 2 0.8 IMIN IR TC RS ZR Minimum Operating Current Recommended Operating Current Average Reverse Breakdown Voltage Temp. Co. Slope Resistance Reverse Dynamic Impedance A mA ppm/C 0.4 0.3 EN Wideband Noise Voltage 105 V(rms) TC = (VR(max)-VR(min)) x 1000000 VR x (T(max)-T(min)) RS = VR Change(IR (min) to IR (max)) IR (max) - IR (min) Reverse Current (uA) Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range. 40 20 25 C 85 C -40 C 0 0 2 4 6 Reverse Voltage (V) Reverse Characteristics 4-263 ZRC500 TYPICAL CHARACTERISTICS 1.6 1.4 5.08 5.06 Reference Voltage (V) Forward Voltage (V) 5.04 5.02 5.00 4.98 4.96 4.94 -40 1.2 1.0 0.8 0.6 0.4 0.1 1 10 100 1000 -20 0 20 40 60 80 100 Forward Current (mA) Temperature (C) Forward Characteristics 3 1000 Temperature Drift Slope Resistance (Ohms) Slope Resistance (Ohms) Iref=150A 100 Iref=1mA 2 T =-40C A 10 Iref=5mA 1 TA=25C 1 TA=85C 0 0.1 1 10 0.1 10 100 1K 10K 100K Reference Current (mA) Frequency (Hz) Slope Resistance vs. Current Slope Resistance vs. Frequency 6 5mA 6 5mA VR (V) 4 VIN VR (V) 4 2 0 10 150A VIN 1K 5mA 33K 150A 2 150A 1K 5mA 33K 150A 0 10 Vin (V) Vin (V) 0 0 0 1 2 3 0 2 4 6 Time (ms) Time (s) Transient Response (Single Pulse) 4-264 Transient Response (Repetitive Pulse) ZRC500 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 Top View Bottom View - Pin 1 floating or connected to pin 3 SOT23 Package Suffix - F Top View - Pin 1 floating or connected to pin 2 4-265 ZRC500 ORDERING INFORMATION Part No ZRC500A03 ZRC500A02 ZRC500A01 ZRC500F03 ZRC500F02 ZRC500F01 Tol% Package 3 2 1 3 2 1 E-Line * E-Line * E-Line * SOT23 SOT23 SOT23 SO8 SO8 SO8 Partmark ZRC50003 ZRC50002 ZRC50001 50P 50T 50X ZRC50003 ZRC50002 ZRC50001 Part No ZRC500R03 ZRC500R02 ZRC500R01 ZRC500Y03 ZRC500Y02 ZRC500Y01 Tol% Package 3 2 1 3 2 1 E-Line * E-Line * E-Line * E-Line E-Line E-Line Partmark ZRC500R3 ZRC500R2 ZRC500R1 ZRC50003 ZRC50002 ZRC50001 ZRC500N803 3 ZRC500N802 2 ZRC500N801 1 * E-Line 3 pin Reversed E-Line 2 pin * E-Line 3 pin 4-266 |
Price & Availability of ZRC500
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