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| PRECISION 4.096 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE ISSUE 3 - MARCH 1998 DEVICE DESCRIPTION The ZRC400 uses a bandgap circuit design to achieve a precision micropower voltage reference of 4.096 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 ZRC400 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC400 is recommended for operation between 23A 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. ZRC400 FEATURES * * * * * * * * * * * * * * Small outline SOT23 , SO8 and TO92 style packages No stabilising capacitor required Low knee current, 18A typical Typical TC 30ppm/C Typical slope resistance 0.4 3%, 2% and 1% tolerance Industrial temperature range Operating current 23A 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 4-257 ZRC400 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 LIMITS TYP MAX 4.137 4.178 4.219 23 5 30 IR(min) to IR(max) 0.4 0.3 90 2 0.8 TOL. % 1 2 3 UNITS 4.055 4.096 4.014 4.096 3.973 4.096 18 0.023 V 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 IR = 1mA f = 100Hz IAC= 0.1 IR IR = 150A f = 10Hz to 10kHz 40 EN Wideband Noise Voltage 90 V(rms) Reverse Current (uA) TC = (VR(max)-VR(min)) x 1000000 VR x (T(max)-T(min)) 30 Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range. 20 25 C RS = VR Change(IR (min) to IR (max)) IR (max) - IR (min) 10 85 C -40 C 0 0 1 2 3 4 5 Reverse Voltage (V) Reverse Characteristics 4-258 ZRC400 TYPICAL CHARACTERISTICS 1.6 1.4 4.10 1.2 Reference Voltage (V) Forward Voltage (V) Iref=100A 1.0 4.09 0.8 0.6 0.4 0.1 1 10 100 1000 4.08 -40 -20 0 20 40 60 80 100 Forward Current (mA) Temperature (C) Forward Characteristics 2 1000 Temperature Drift Slope Resistance (Ohms) Slope Resistance (Ohms) Iref=150A 1.5 100 Iref=1mA 1 Ta=-40C 10 Iref=5mA 0.5 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 4 5mA 4 5mA 150A Vout (V) Vout (V) 2 150A 2 0 VIN 1K2 5mA 39K 150A VIN 1K2 5mA 39K 150A 0 10 10 Vin (V) 0 Vin (V) 0 200 400 600 0 0 2 4 6 Time (s) Time (s) Transient Response (Single Pulse) 4-259 Transient Response (Repetitive Pulse) ZRC400 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 4-260 ZRC400 ORDERING INFORMATION Part No ZRC400A03 ZRC400A02 ZRC400A01 ZRC400F03 ZRC400F02 ZRC400F01 Tol% 3 2 1 3 2 1 Package E-Line * E-Line * E-Line * SOT23 SOT23 SOT23 SO8 SO8 SO8 Partmark ZRC40003 ZRC40002 ZRC40001 40D 40G 40H ZRC40003 ZRC40002 ZRC40001 Part No ZRC400R03 ZRC400R02 ZRC400R01 ZRC400Y03 ZRC400Y02 ZRC400Y01 Tol% 3 2 1 3 2 1 Package E-Line * E-Line * E-Line * E-Line E-Line E-Line Partmark ZRC400R3 ZRC400R2 ZRC400R1 ZRC40003 ZRC40002 ZRC40001 ZRC400N803 3 ZRC400N802 2 ZRC400N801 1 * E-Line 3 pin Reversed E-Line 2 pin * E-Line 3 pin 4-261 |
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