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| PRECISION 3.3 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE ISSUE 2 - FEBRUARY 1997 DEVICE DESCRIPTION The ZRC330 uses a bandgap circuit design to achieve a precision micropower voltage reference of 3.3 volts. The device is available in small outline surface mount packages, ideal for applications where space saving is important. The ZRC330 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC330 is recommended for operation between 20A and 5mA 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 ZRC330 * * * * * * * * * * * * * No stabilising capacitor required Low knee current, 15A typical Typical slope resistance 0.6 3%, 2% and 1% tolerance Industrial temperature range Operating current 20A to 5mA Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Test equipment. Data acquisition systems. Precision power supplies. Crystal oscillators APPLICATIONS * Small outline SOT23, SO8 and TO92 style packages SCHEMATIC DIAGRAM V R G nd 1 - 42 ZRC330 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 3.27 3.234 3.2 LIMITS TYP MAX 3.3 3.3 3.3 15 0.02 IR(min) to IR(max) IR = 1mA f = 100Hz IAC= 0.1 IR IR = 150A f = 10Hz to 10kHZ 40 TOL.% UNITS 3.33 3.366 3.4 20 5 1 2 3 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 15 0.6 0.5 50 2 1.2 EN Wideband Noise Voltage 43 V(rms) Reverse Current (A) TC = VR Change x 1000000 VR x Temperature Change VR Change (IR (min) to IR (max)) IR (max) - IR (min) 30 20 T)=85C 10 T)=-40C T)=25C RS = 0 0 2.0 4.0 Reverse Voltage (V) Reverse Characteristics 1 - 43 ZRC330 TYPICAL CHARACTERISTICS 1.6 3.31 IR=150A to 5mA 1.4 1.2 Reference voltage (V) 0.1 1 10 100 1000 Forward Voltage (V) 3.30 1.0 0.8 0.6 3.29 0.4 -40 -20 0 20 40 60 80 Forward Current (mA) Temperature (C) Forward Characteristics 3.0 Temperature Drift 1000 I4=150A Slope resistance () Slope resistance () 100 I4=1mA 2.0 TA=25C TA=-40C 10 I4=5mA 1 1.0 TA=85C 0 0.1 1 10 0.1 0.01 0.1 1 10 100 Reference Current (mA) Frequency (KHz) Slope Resistance v Current Slope Resistance v Frequency 3.0 3.0 VR - (V) 5 mA 150 A INPUT 1K3 43K 5mA 150A OUTPUT 5 mA 2.0 150 A INPUT 43K 150A OUTPUT VR - (V) 2.0 1.0 1.0 1K3 5mA 0 0 - (V) - (V) 0 100 200 300 10 10 VI N VI 0 N 0 Time (s) 0 1 Transient Response (Single Pulse) Transient Response (Repetitive Pulse) Time (s) 2 3 4 1 - 44 ZRC330 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 ZRC330 ORDERING INFORMATION Part No ZRC330A03 ZRC330A02 ZRC330A01 ZRC330F03 ZRC330F02 ZRC330F01 ZRC330N803 ZRC330N802 ZRC330N801 Tol% Package 3 2 1 3 2 1 3 2 1 E-Line * E-Line * E-Line * SOT23 SOT23 SOT23 SO8 SO8 SO8 Partmark ZRC33003 ZRC33002 ZRC33001 33A 33B 33C ZRC33003 ZRC33002 ZRC33001 Part No ZRC330R03 ZRC330R02 ZRC330R01 ZRC330Y03 ZRC330Y02 ZRC330Y01 Tol% Package 3 2 1 3 2 1 E-Line * E-Line * E-Line * E-Line E-Line E-Line Partmark ZRC330R3 ZRC330R2 ZRC330R1 ZRC33003 ZRC33002 ZRC33001 * E-Line 3 pin Reversed E-Line 2 pin * E-Line 3 pin |
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