PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE ZRA250 ISSUE 2 - NOVEMBER 1996 DEVICE DESCRIPTION • • • • • • • • The ZRA250 uses a bandgap circuit design to achieve a precision micropower voltage reference of 2.5 volts. The device is available in small outline surface mount packages, ideal for applications where space saving is important. The ZRA250 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRA250 is recommended for operation between 50µA 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. • • • • • • Small outline SOT23, SO8 and TO92 style packages. SCHEMATIC DIAGRAM VR G nd 1-80 2003 Powered by ICminer.com Electronic-Library Service CopyRight Typical TC 30ppm/°C Typical slope resistance 0.4Ω ± 3%, 2%,1% and 0.5% tolerance Industrial temperature range Operating current 50µA to 5mA Transient response, stable in less than 10µs Optional extended current range APPLICATIONS FEATURES • No stabilising capacitor required 1-77 Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Test equipment. Data acquisition systems. Precision power supplies. ZRA250 ZRA250 Power Dissipation (Tamb=25°C) SOT23 330mW E-Line, 3 pin (TO92) 500mW E-Line, 2 pin (TO92) 500mW SO8 625mW TYPICAL CHARACTERISTICS ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C CONDITIONS LIMITS MIN VR Reverse Breakdown Voltage 50 µA 5 mA 30 90 ppm/°C 0.4 2 Ω IR = 1mA f = 100Hz IAC= 0.1 IR 0.3 0.8 Ω IR = 150µA f = 10Hz to 10KHZ 43 IR Recommended Operating Current TC RS § Average Reverse Breakdown Voltage Temp. Co. IR(min) to IR(max) Slope Resistance ZR Reverse Dynamic Impedance 0.05 0.5 1 2 3 2.52 1.0 0.8 0.6 0.4 0.2 25 Minimum Operating Current Wideband Noise Voltage MAX 2.5125 2.525 2.55 2.575 IMIN EN UNITS 2.5 2.5 2.5 2.5 IR=150µA 2.4875 2.475 2.45 2.425 TYP TOL. % 2.53 1.2 V IR =150µA to 5mA 2.51 2.50 2.49 2.48 2.47 0.1 10 1 100 -40 1000 -20 0 Forward Current (mA) 20 40 60 80 Temperature (°C) Forward Characteristics Temperature Drift 1000 IR=150µA Slope resistance (Ω) SYMBOL PARAMETER 1.4 Reference voltage (V) 25mA 25mA -40 to 85°C -55 to 125°C Slope resistance (Ω) Reverse Current Forward Current Operating Temperature Storage Temperature Forward Voltage (V) ABSOLUTE MAXIMUM RATING 1.0 0.5 TA=-40°C TA=25°C 100 IR=1mA 10 IR=5mA 1 TA=85°C 0.1 0 0.1 µV(rms) 1 10 0.01 0.1 Slope Resistance v Current 1 Frequency (kHz) Reference Current (mA) 10 100 Slope Resistance v Frequency 60 V - (V) V - (V) 3.0 INPUT 2.0 50K OUTPUT R 1.0 1K5 1.0 OUTPUT 30 TA TA 10 0.2 5°C =8 0.6 1.0 1.4 5°C =2 0°C =-4 A T 1.8 2.2 Reverse Voltage (V) IN 2.6 0 0 10 10 - (V) 20 0 NI 0 0 1 2 Time (µs) 3 4 0 0 µA) Transient Response (IR=150µ 0.1 0.2 Time (µs) 0.3 Transient Response (IR=5mA) Reverse Characteristics 1-78 INPUT 2.0 R V VR Change (IR (min) to IR (max)) § RS = IR (max) − IR (min) 40 - (V) VR x Temperature Change 50 V TC = Reverse Current (µA) 3.0 VR Change x 1000000 1-79 0.4 ZRA250 ZRA250 Power Dissipation (Tamb=25°C) SOT23 330mW E-Line, 3 pin (TO92) 500mW E-Line, 2 pin (TO92) 500mW SO8 625mW TYPICAL CHARACTERISTICS ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C CONDITIONS LIMITS MIN VR Reverse Breakdown Voltage 50 µA 5 mA 30 90 ppm/°C 0.4 2 Ω IR = 1mA f = 100Hz IAC= 0.1 IR 0.3 0.8 Ω IR = 150µA f = 10Hz to 10KHZ 43 IR Recommended Operating Current TC RS § Average Reverse Breakdown Voltage Temp. Co. IR(min) to IR(max) Slope Resistance ZR Reverse Dynamic Impedance 0.05 0.5 1 2 3 2.52 1.0 0.8 0.6 0.4 0.2 25 Minimum Operating Current Wideband Noise Voltage MAX 2.5125 2.525 2.55 2.575 IMIN EN UNITS 2.5 2.5 2.5 2.5 IR=150µA 2.4875 2.475 2.45 2.425 TYP TOL. % 2.53 1.2 V IR =150µA to 5mA 2.51 2.50 2.49 2.48 2.47 0.1 10 1 100 -40 1000 -20 0 Forward Current (mA) 20 40 60 80 Temperature (°C) Forward Characteristics Temperature Drift 1000 IR=150µA Slope resistance (Ω) SYMBOL PARAMETER 1.4 Reference voltage (V) 25mA 25mA -40 to 85°C -55 to 125°C Slope resistance (Ω) Reverse Current Forward Current Operating Temperature Storage Temperature Forward Voltage (V) ABSOLUTE MAXIMUM RATING 1.0 0.5 TA=-40°C TA=25°C 100 IR=1mA 10 IR=5mA 1 TA=85°C 0.1 0 0.1 µV(rms) 1 10 0.01 0.1 Slope Resistance v Current 1 Frequency (kHz) Reference Current (mA) 10 100 Slope Resistance v Frequency 60 V - (V) V - (V) 3.0 INPUT 2.0 50K OUTPUT R 1.0 1K5 1.0 OUTPUT 30 TA TA 10 0.2 5°C =8 0.6 1.0 1.4 5°C =2 0°C =-4 A T 1.8 2.2 Reverse Voltage (V) IN 2.6 0 0 10 10 - (V) 20 0 NI 0 0 1 2 Time (µs) 3 4 0 0 µA) Transient Response (IR=150µ 0.1 0.2 Time (µs) 0.3 Transient Response (IR=5mA) Reverse Characteristics 1-78 2003 Powered by ICminer.com Electronic-Library Service CopyRight INPUT 2.0 R V VR Change (IR (min) to IR (max)) § RS = IR (max) − IR (min) 40 - (V) VR x Temperature Change 50 V TC = Reverse Current (µA) 3.0 VR Change x 1000000 1-79 0.4 ZRA250 ZRA250 CONNECTION DIAGRAMS E-Line, 2 pin Package Suffix Y Bottom View E-Line, 3 pin Package Suffix A Bottom View Pin 1 floating or connected to pin 3 SOT23 Package Suffix F Top View Pin 1 floating or connected to pin 2 ORDERING INFORMATION E-Line, 3 pin,Rev Package Suffix R Bottom View Pin 3 floating or connected to pin 1 SO8 Package Suffix N8 Top View Part No Tol% Package Partmark Part No Tol% Package Partmark ZRA250A03 3 E-Line • ZRA25003 ZRA250R03 3 E-Line * ZRA250R3 ZRA250A02 2 E-Line • ZRA25002 ZRA250R02 2 E-Line * ZRA250R2 ZRA250A01 1 E-Line • ZRA25001 ZRA250R01 1 E-Line * ZRA250R1 ZRA250A005 0.5 E-Line • ZRA250005 ZRA250R005 0.5 E-Line * ZRA250R05 ZRA250F03 3 SOT23 25A ZRA250Y03 3 E-Line ZRA25003 ZRA250F02 2 SOT23 25B ZRA250Y02 2 E-Line ZRA25002 ZRA250F01 1 SOT23 25C ZRA250Y01 1 E-Line ZRA25001 ZRA250F005 0.5 SOT23 25Y ZRA250Y005 0.5 E-Line ZRA250005 ZRA250N803 3 SO8 ZRA25003 ZRA250N802 2 SO8 ZRA25002 ZRA250N801 1 SO8 ZRA25001 SO8 ZRA250005 ZRA250N8005 0.5 * E-Line 3 pin Reversed E-Line 2 pin • E-Line 3 pin ZRA250 ZRA250 CONNECTION DIAGRAMS E-Line, 2 pin Package Suffix Y Bottom View E-Line, 3 pin Package Suffix A Bottom View Pin 1 floating or connected to pin 3 ORDERING INFORMATION E-Line, 3 pin,Rev Package Suffix R Bottom View Pin 3 floating or connected to pin 1 SO8 Package Suffix N8 Top View SOT23 Package Suffix F Top View Pin 1 floating or connected to pin 2 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Part No Tol% Package Partmark Part No Tol% Package Partmark ZRA250A03 3 E-Line • ZRA25003 ZRA250R03 3 E-Line * ZRA250R3 ZRA250A02 2 E-Line • ZRA25002 ZRA250R02 2 E-Line * ZRA250R2 ZRA250A01 1 E-Line • ZRA25001 ZRA250R01 1 E-Line * ZRA250R1 ZRA250A005 0.5 E-Line • ZRA250005 ZRA250R005 0.5 E-Line * ZRA250R05 ZRA250F03 3 SOT23 25A ZRA250Y03 3 E-Line ZRA25003 ZRA250F02 2 SOT23 25B ZRA250Y02 2 E-Line ZRA25002 ZRA250F01 1 SOT23 25C ZRA250Y01 1 E-Line ZRA25001 ZRA250F005 0.5 SOT23 25Y ZRA250Y005 0.5 E-Line ZRA250005 ZRA250N803 3 SO8 ZRA25003 ZRA250N802 2 SO8 ZRA25002 ZRA250N801 1 SO8 ZRA25001 SO8 ZRA250005 ZRA250N8005 0.5 * E-Line 3 pin Reversed E-Line 2 pin • E-Line 3 pin