PRECISION 1.25 VOLT MICROPOWER VOLTAGE REFERENCE ZRA124 ZRA124 ISSUE 2 - FEBRUARY 1997 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 E-Line, 3 pin,Rev Package Suffix R Bottom View Pin 3 floating or connected to pin 1 SO8 Package Suffix N8 DEVICE DESCRIPTION The ZRA124 uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.24 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 ZRA124 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRA124 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. FEATURES • Top View • Small outline SOT23, SO8 and TO92 style packages No stabilising capacitor required SCHEMATIC DIAGRAM SOT23 Package Suffix F Top View Pin 1 floating or connected to pin 2 ORDERING INFORMATION Part No Tol% Package ZRA124A01 1 E-Line • ZRA12401 ZRA124F01 1 SOT23 12C ZRA124N801 1 SO8 ZRA12401 ZRA124R01 1 E-Line * ZRA124R1 ZRA124Y01 1 E-Line ZRA12401 V R Partmark * E-Line 3 pin Reversed E-Line 2 pin • E-Line 3 pin G nd 1 - 21 • • • • • • Typical TC 30ppm/°C Typical slope resistance 0.65Ω ± 1% tolerance Industrial temperature range Operating current 50µA to 5mA Transient response, stable in less than 10µs APPLICATIONS • • • • • • Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Precision power supplies. Test equipment. Data acquisition systems ZRA124 ZRA124 CONDITIONS Reverse Breakdown Voltage IR=150µA IMIN Minimum Operating Current IR Recommended Operating Current TC Average Reverse Breakdown Voltage Temp. Co. TOL. % MIN TYP MAX 1.228 1.24 1.252 30 0.05 30 IR(min) to IR(max) UNITS 1.2 1.26 1.0 0.8 0.6 0.4 V µA 5 mA 90 ppm/°C 1 10 100 Ω ZR Reverse Dynamic Impedance IR = 1mA f = 100Hz IAC= 0.1 IR 0.5 Ω Wideband Noise Voltage 40 IR = 150µA f = 100Hz to 10kHZ 1 1.24 1.23 1.22 -40 1000 -20 0 20 40 60 80 Temperature (°C) Forward Characteristics Temperature Drift 1000 1.0 0.65 2 1.25 Forward Current (mA) 50 Slope Resistance IR=150µA to 5mA 1.21 0.1 RS § EN 1.27 0.2 1 Slope resistance (Ω) VR LIMITS 1.4 Reference voltage (V) ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER TYPICAL CHARACTERISTICS 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 Forward Voltage (V) Reverse Current Forward Current Operating Temperature Storage Temperature 100 Slope resistance (Ω) ABSOLUTE MAXIMUM RATING TA=-40°C TA=25°C 0.5 TA =85°C IR=150µA 10 IR=1mA IR=5mA 1 0.1 µV(rms) 0.01 0 0.1 1 0.1 10 1 10 100 Frequency (kHz) Reference Current (mA) Slope Resistance v Current Slope Resistance v Frequency 1.5 1.5 30 20 TA =8 A= 2 5 °C T 10 1.0 INPUT R C 5° A= 58K 0.5 0 -4 V - (V) 40 V - (V) 1.0 INPUT R 1 K8 O UTPUT 0.5 O UTPUT °C T 0 0 10 10 0 0.2 0.4 0.6 0.8 1.0 1.2 Reverse Voltage (V) Reverse Characteristics 1.4 NI - (V) 0 NI 0 V VR Change (IR (min) to IR (max)) RS = IR (max) − IR (min) 50 - (V) § VR Change x 1000000 VR x Temperature Change V TC = Reverse Current (µA) 60 0 1 2 3 4 0 Time (µs) 2 4 6 Time (µs) Transient Response (IR=5mA) µA) Transient Response (IR=150µ 1 - 22 0 1 - 23 8 ZRA124 ZRA124 CONDITIONS Reverse Breakdown Voltage IR=150µA IMIN Minimum Operating Current IR Recommended Operating Current TC Average Reverse Breakdown Voltage Temp. Co. TOL. % MIN TYP MAX 1.228 1.24 1.252 30 0.05 30 IR(min) to IR(max) UNITS 1.2 1.26 1.0 0.8 0.6 0.4 V µA 5 mA 90 ppm/°C 1 10 100 Ω ZR Reverse Dynamic Impedance IR = 1mA f = 100Hz IAC= 0.1 IR 0.5 Ω Wideband Noise Voltage 40 IR = 150µA f = 100Hz to 10kHZ 1 1.24 1.23 1.22 -40 1000 -20 0 20 40 60 80 Temperature (°C) Forward Characteristics Temperature Drift 1000 1.0 0.65 2 1.25 Forward Current (mA) 50 Slope Resistance IR=150µA to 5mA 1.21 0.1 RS § EN 1.27 0.2 1 Slope resistance (Ω) VR LIMITS 1.4 Reference voltage (V) ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER TYPICAL CHARACTERISTICS 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 Forward Voltage (V) Reverse Current Forward Current Operating Temperature Storage Temperature 100 Slope resistance (Ω) ABSOLUTE MAXIMUM RATING TA=-40°C TA=25°C 0.5 TA =85°C IR=150µA 10 IR=1mA IR=5mA 1 0.1 µV(rms) 0.01 0 0.1 1 0.1 10 1 10 100 Frequency (kHz) Reference Current (mA) Slope Resistance v Current Slope Resistance v Frequency 1.5 1.5 30 20 TA =8 A= 2 5 °C T 10 1.0 INPUT R C 5° A= 58K 0.5 0 -4 V - (V) 40 V - (V) 1.0 INPUT R 1 K8 O UTPUT 0.5 O UTPUT °C T 0 0 10 10 0 0.2 0.4 0.6 0.8 1.0 1.2 Reverse Voltage (V) Reverse Characteristics 1.4 NI - (V) 0 NI 0 V VR Change (IR (min) to IR (max)) RS = IR (max) − IR (min) 50 - (V) § VR Change x 1000000 VR x Temperature Change V TC = Reverse Current (µA) 60 0 1 2 3 4 0 Time (µs) 2 4 6 Time (µs) Transient Response (IR=5mA) µA) Transient Response (IR=150µ 1 - 22 0 1 - 23 8 PRECISION 1.25 VOLT MICROPOWER VOLTAGE REFERENCE ZRA124 ZRA124 ISSUE 2 - FEBRUARY 1997 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 E-Line, 3 pin,Rev Package Suffix R Bottom View Pin 3 floating or connected to pin 1 SO8 Package Suffix N8 DEVICE DESCRIPTION The ZRA124 uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.24 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 ZRA124 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRA124 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. FEATURES • Top View • Small outline SOT23, SO8 and TO92 style packages No stabilising capacitor required SCHEMATIC DIAGRAM SOT23 Package Suffix F Top View Pin 1 floating or connected to pin 2 ORDERING INFORMATION Part No Tol% Package ZRA124A01 1 E-Line • ZRA12401 ZRA124F01 1 SOT23 12C ZRA124N801 1 SO8 ZRA12401 ZRA124R01 1 E-Line * ZRA124R1 ZRA124Y01 1 E-Line ZRA12401 V R Partmark * E-Line 3 pin Reversed E-Line 2 pin • E-Line 3 pin G nd 1 - 21 • • • • • • Typical TC 30ppm/°C Typical slope resistance 0.65Ω ± 1% tolerance Industrial temperature range Operating current 50µA to 5mA Transient response, stable in less than 10µs APPLICATIONS • • • • • • Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Precision power supplies. Test equipment. Data acquisition systems