ZRA125 ETC1
Document overview
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Technical content
PRECISION 1.25 VOLT MICROPOWER VOLTAGE REFERENCE ISSUE 2 - FEBRUARY 1997 ZRA125 V R G nd DEVICE DESCRIPTION The ZRA125 uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.25 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 ZRA125 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRA125 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
- Small outline SOT23, SO8 and TO92 style packages
- No stabilising capacitor required
- Typical TC 30ppm/°C
- Typical slope resistance 0.65Ω
- ± 3%,2% and 1% tolerance
- Industrial temperature range
- Operating current 50µA to 5mA
- Transient response, stable in less than 10µs
- Optional extended current range
APPLICATIONS
- Battery powered and portable equipment.
- Metering and measurement systems.
- Instrumentation.
- Data acquisition systems.
- Precision power supplies.
- Test equipment. 1 - 24
Operating Temperature -40 to 85°C Storage Temperature -55 to 125°C Power Dissipation (T amb=25°C) SOT23 330mW E-Line, 3 pin (TO92) 500mW E-Line, 2 pin (TO92) 500mW SO8 625mW /G31/G2e/G32 /G34 /G31/G2e/G32 /G33 /G31/G2e/G32 /G32 /G31/G2e/G32 /G31 /G31/G2e/G32 /G37 /G31/G2e/G32 /G36 /G31/G2e/G32 /G35 TYPICAL CHARACTERISTICS Forward Characteristics Forward Current (mA) Temperature (°C) Reference Current (mA) Frequency (kHz) Temperature Drift Slope Resistance v Current V /G49 /G4e - (V)V /G52 - (V)Forward Voltage (V) Slope resistance (Ω) Time (µs) Transient Response (I/G52 =150µµA) /G31/G31 /G30/G30/G2e/G31 /G54 /G41 /G3d/G32 /G35 /Gb0/G43 Slope Resistance v Frequency /G2d/G34/G30 /G2d/G32/G30 /G30 /G32 /G30 /G34 /G30 /G36 /G30 /G38 /G30 /G30/G2e/G32 /G30/G2e/G34 /G30/G2e/G36 /G30/G2e/G38 /G31/G2e/G30 /G31/G2e/G32 /G31/G2e/G34 /G30 /G2e /G31 /G31 /G31/G30 /G31/G30 /G30 /G31/G30 /G30/G30 /G49 /G52 /G3d/G31 /G35/G30 µ/G41 /G74 /G6f /G35/G6d/G41 /G30 /G30/G2e /G35 /G31/G2e /G30 /G54 /G41 /G3d /G2d/G34/G30 /Gb0 /G43 /G54 /G41 /G3d/G38 /G35/Gb0 /G43 /G31 /G30/G2e /G31 /G31/G30 /G31/G30/G30 /G31/G30 /G30/G30 /G31/G30 /G31/G30 /G30/G31/G30/G2e/G31/G30/G2e/G30/G31 /G30/G31 /G32 /G33 /G34 /G30 /G31/G30 /G30 /G30/G2e/G35 /G31/G2e/G30 /G31/G2e/G35 /G30 /G31/G30 /G30 /G30/G2e/G35 /G31/G2e/G30 /G31/G2e/G35 /G30/G32 /G34 /G36 /G38 Time (µs) Transient Response (I/G52 =5mA) /G49 /G52 /G3d/G31 /G35 /G30 µ/G41 /G49 /G52 /G3d/G31 /G6d /G41 /G49 /G52 /G3d/G35 /G6d /G41 /G49 /G4e/G50/G55/G54 /G4f/G55 /G54 /G50 /G55 /G54 /G35/G38/G4b /G49/G4e /G50 /G55 /G54 /G4f /G55 /G54/G50/G55/G54 /G31/G4b /G38 Reference voltage (V) Slope resistance (Ω) V /G49 /G4e - (V)V /G52 - (V) Reverse Characteristics Reverse Voltage (V) Reverse Current (µA) /G30 /G30/G2e /G32 /G30 /G2e/G34 /G30 /G2e/G38 /G31/G2e /G34 /G30/G2e /G36 /G31/G2e /G30 /G30 /G31/G30 /G32/G30 /G33/G30 /G34/G30 /G35/G30 /G36/G30 /G54 /G41 /G3d /G32 /G35 /Gb0 /G43 /G54 /G41 /G3d /G2d /G34 /G30 /Gb0 /G43 /G54 /G41 /G3d /G38 /G35 /Gb0 /G43 /G31/G2e /G32 ZRA125
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER CONDITIONS LIMITS TOL. UNITS MIN TYP MAX VR Reverse Breakdown Voltage IR=150µA 1.228 1.225 1.21 1.24 1.25 1.25 1.252 1.275 1.29 V IMIN Minimum Operating Current 30 50 µA IR Recommended Operating Current 0.05 5 mA TC Average Reverse Breakdown Voltage Temp. Co. IR(min) to IR(max) 30 90 ppm/°C RS § Slope Resistance 0.65 2 Ω ZR Reverse Dynamic Impedance IR =1 m A f = 100Hz I AC= 0.1 IR 0.5 1 Ω EN Wideband Noise Voltage IR =1 5 0µA f=1 0 0 H z t o 1 0 k H Z µV(rms) TC = VR Change x 1000000 VR x Temperature Change § RS = VR Change (IR (min) to IR (max)) IR (max) − IR (min) ZRA125 1 - 261 - 45
Operating Temperature -40 to 85°C Storage Temperature -55 to 125°C Power Dissipation (T amb=25°C) SOT23 330mW E-Line, 3 pin (TO92) 500mW E-Line, 2 pin (TO92) 500mW SO8 625mW /G31/G2e/G32 /G34 /G31/G2e/G32 /G33 /G31/G2e/G32 /G32 /G31/G2e/G32 /G31 /G31/G2e/G32 /G37 /G31/G2e/G32 /G36 /G31/G2e/G32 /G35 TYPICAL CHARACTERISTICS Forward Characteristics Forward Current (mA) Temperature (°C) Reference Current (mA) Frequency (kHz) Temperature Drift Slope Resistance v Current V /G49 /G4e - (V)V /G52 - (V)Forward Voltage (V) Slope resistance (Ω) Time (µs) Transient Response (I/G52 =150µµA) /G31/G31 /G30/G30/G2e/G31 /G54 /G41 /G3d/G32 /G35 /Gb0/G43 Slope Resistance v Frequency /G2d/G34/G30 /G2d/G32/G30 /G30 /G32 /G30 /G34 /G30 /G36 /G30 /G38 /G30 /G30/G2e/G32 /G30/G2e/G34 /G30/G2e/G36 /G30/G2e/G38 /G31/G2e/G30 /G31/G2e/G32 /G31/G2e/G34 /G30 /G2e /G31 /G31 /G31/G30 /G31/G30 /G30 /G31/G30 /G30/G30 /G49 /G52 /G3d/G31 /G35/G30 µ/G41 /G74 /G6f /G35/G6d/G41 /G30 /G30/G2e /G35 /G31/G2e /G30 /G54 /G41 /G3d /G2d/G34/G30 /Gb0 /G43 /G54 /G41 /G3d/G38 /G35/Gb0 /G43 /G31 /G30/G2e /G31 /G31/G30 /G31/G30/G30 /G31/G30 /G30/G30 /G31/G30 /G31/G30 /G30/G31/G30/G2e/G31/G30/G2e/G30/G31 /G30/G31 /G32 /G33 /G34 /G30 /G31/G30 /G30 /G30/G2e/G35 /G31/G2e/G30 /G31/G2e/G35 /G30 /G31/G30 /G30 /G30/G2e/G35 /G31/G2e/G30 /G31/G2e/G35 /G30/G32 /G34 /G36 /G38 Time (µs) Transient Response (I/G52 =5mA) /G49 /G52 /G3d/G31 /G35 /G30 µ/G41 /G49 /G52 /G3d/G31 /G6d /G41 /G49 /G52 /G3d/G35 /G6d /G41 /G49 /G4e/G50/G55/G54 /G4f/G55 /G54 /G50 /G55 /G54 /G35/G38/G4b /G49/G4e /G50 /G55 /G54 /G4f /G55 /G54/G50/G55/G54 /G31/G4b /G38 Reference voltage (V) Slope resistance (Ω) V /G49 /G4e - (V)V /G52 - (V) Reverse Characteristics Reverse Voltage (V) Reverse Current (µA) /G30 /G30/G2e /G32 /G30 /G2e/G34 /G30 /G2e/G38 /G31/G2e /G34 /G30/G2e /G36 /G31/G2e /G30 /G30 /G31/G30 /G32/G30 /G33/G30 /G34/G30 /G35/G30 /G36/G30 /G54 /G41 /G3d /G32 /G35 /Gb0 /G43 /G54 /G41 /G3d /G2d /G34 /G30 /Gb0 /G43 /G54 /G41 /G3d /G38 /G35 /Gb0 /G43 /G31/G2e /G32 ZRA125 TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER CONDITIONS LIMITS TOL. UNITS MIN TYP MAX VR Reverse Breakdown Voltage IR=150µA 1.228 1.225 1.21 1.24 1.25 1.25 1.252 1.275 1.29 V IMIN Minimum Operating Current 30 50 µA IR Recommended Operating Current 0.05 5 mA TC Average Reverse Breakdown Voltage Temp. Co. IR(min) to IR(max) 30 90 ppm/°C RS § Slope Resistance 0.65 2 Ω ZR Reverse Dynamic Impedance IR =1 m A f = 100Hz I AC= 0.1 IR 0.5 1 Ω EN Wideband Noise Voltage IR =1 5 0µA f=1 0 0 H z t o 1 0 k H Z µV(rms) TC = VR Change x 1000000 VR x Temperature Change § RS = VR Change (IR (min) to IR (max)) IR (max) − IR (min) ZRA125 1 - 261 - 45
Top View Pin 1 floating or connected to pin 2 E-Line, 3 pin,Rev Package Suffix R Bottom View Pin 3 floating or connected to pin 1 E-Line, 2 pin Package Suffix Y Bottom View CONNECTION DIAGRAMS Part No Tol% Package Partmark ZRA125A03 3 E-Line • ZRA12503 ZRA125A02 2 E-Line • ZRA12502 ZRA125A01 1 E-Line • ZRA12501 ZRA125F03 3 SOT23 12A ZRA125F02 2 SOT23 12B ZRA125F01 1 SOT23 12D ZRA125N803 3 SO8 ZRA12503 ZRA125N802 2 SO8 ZRA12502 ZRA125N801 1 SO8 ZRA12501 Part No Tol% Package Partmark ZRA125R03 3 E-Line * ZRA125R3 ZRA125R02 2 E-Line * ZRA125R2 ZRA125R01 1 E-Line * ZRA125R1 ZRA125Y03 3 E-Line ZRA12503 ZRA125Y02 2 E-Line ZRA12502 ZRA125Y01 1 E-Line ZRA12501 * E-Line 3 pin Reversed E-Line 2 pin
- E-Line 3 pin
ORDERING INFORMATION
E-Line, 3 pin Package Suffix A Bottom View Pin 1 floating or connected to pin 3 ZRA125
Top View Pin 1 floating or connected to pin 2 E-Line, 3 pin,Rev Package Suffix R Bottom View Pin 3 floating or connected to pin 1 E-Line, 2 pin Package Suffix Y Bottom View CONNECTION DIAGRAMS Part No Tol% Package Partmark ZRA125A03 3 E-Line • ZRA12503 ZRA125A02 2 E-Line • ZRA12502 ZRA125A01 1 E-Line • ZRA12501 ZRA125F03 3 SOT23 12A ZRA125F02 2 SOT23 12B ZRA125F01 1 SOT23 12D ZRA125N803 3 SO8 ZRA12503 ZRA125N802 2 SO8 ZRA12502 ZRA125N801 1 SO8 ZRA12501 Part No Tol% Package Partmark ZRA125R03 3 E-Line * ZRA125R3 ZRA125R02 2 E-Line * ZRA125R2 ZRA125R01 1 E-Line * ZRA125R1 ZRA125Y03 3 E-Line ZRA12503 ZRA125Y02 2 E-Line ZRA12502 ZRA125Y01 1 E-Line ZRA12501 * E-Line 3 pin Reversed E-Line 2 pin
- E-Line 3 pin
E-Line, 3 pin Package Suffix A Bottom View Pin 1 floating or connected to pin 3 ZRA125