PRECISION 4.096 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE ZRC400 ISSUE 3 - MARCH 1998 DEVICE DESCRIPTION FEATURES • 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 23µA 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. Small outline SOT23 , SO8 and TO92 style packages No stabilising capacitor required Low knee current, 18µA typical Typical TC 30ppm/°C Typical slope resistance 0.4Ω ± 3%, 2% and 1% tolerance Industrial temperature range Operating current 23µA to 5mA Transient response, stable in less than 10µs Optional extended current range APPLICATIONS • • • • SCHEMATIC DIAGRAM V R G nd 4-257 Battery powered and portable equipment. Instrumentation. Test equipment. Metering and measurement systems. ZRC400 ABSOLUTE MAXIMUM RATING Reverse Current Forward Current Operating Temperature Storage Temperature Power Dissipation (Tamb=25°C) SOT23 330mW E-Line, 3 pin (TO92) 500mW E-Line, 2 pin (TO92) 500mW SO8 625mW 25mA 25mA -40 to 85°C -55 to 125°C ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER CONDITIONS LIMITS MIN VR Reverse Breakdown Voltage IMIN Minimum Operating Current IR Recommended Operating Current TC † Average Reverse Breakdown Voltage Temp. Co. TYP 4.055 4.096 4.014 4.096 3.973 4.096 IR=150µA MAX 4.137 4.178 4.219 1 2 3 UNITS V 23 µA 5 mA 30 90 ppm/°C 0.4 2 Ω 0.8 Ω 18 0.023 IR(min) to IR(max) TOL. % RS § Slope Resistance ZR Reverse Dynamic Impedance IR = 1mA f = 100Hz IAC= 0.1 IR 0.3 EN Wideband Noise Voltage IR = 150µA f = 10Hz to 10kHz 90 µV(rms) 40 TC = (VR(max)−VR(min)) x 1000000 VR x (T(max)−T(min)) Reverse Current (uA) † Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range. § RS = VR Change(IR (min) to IR (max)) 30 20 25 °C 85 °C 10 IR (max) − IR (min) -40 °C 0 0 1 2 3 4 Reverse Voltage (V) Reverse Characteristics 4-258 5 ZRC400 TYPICAL CHARACTERISTICS 4.10 1.6 Reference Voltage (V) Forward Voltage (V) 1.4 1.2 1.0 0.8 Iref=100µA 4.09 0.6 4.08 -40 0.4 0.1 1 10 100 1000 -20 Forward Current (mA) Forward Characteristics 20 60 40 80 100 Temperature Drift 1000 Slope Resistance (Ohms) 2 Slope Resistance (Ohms) 0 Temperature (°C) 1.5 Ta=-40°C 1 0.5 Ta=25°C Iref=150µA 100 Iref=1mA 10 Iref=5mA 1 Ta=85°C 0 0.1 1 0.1 10 10 100 Reference Current (mA) Slope Resistance vs. Current Vout (V) Vout (V) 2 0 VIN 1K2 5mA 39K 150µA 10 150µA 2 VIN 1K2 5mA 0 39K 150µA 10 Vin (V) Vin (V) 100K 5mA 4 150µA 10K Slope Resistance vs. Frequency 5mA 4 1K Frequency (Hz) 0 0 200 400 600 0 0 Time (µs) 2 4 6 Time (µs) Transient Response (Single Pulse) Transient Response (Repetitive Pulse) 4-259 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 Tol% Package Partmark Part No Tol% Package Partmark ZRC400A03 3 E-Line • ZRC40003 ZRC400R03 3 E-Line * ZRC400R3 ZRC400A02 2 E-Line • ZRC40002 ZRC400R02 2 E-Line * ZRC400R2 ZRC400A01 1 E-Line • ZRC40001 ZRC400R01 1 E-Line * ZRC400R1 ZRC400F03 3 SOT23 40D ZRC400Y03 3 E-Line † ZRC40003 ZRC400F02 2 SOT23 40G ZRC400Y02 2 E-Line † ZRC40002 ZRC400F01 1 SOT23 40H ZRC400Y01 1 E-Line † ZRC40001 ZRC400N803 3 SO8 ZRC40003 ZRC400N802 2 SO8 ZRC40002 ZRC400N801 1 SO8 ZRC40001 * E-Line 3 pin Reversed † E-Line 2 pin • E-Line 3 pin 4-261