ZRC250A01STOA

PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE ZRC250 ISSUE 3 - MARCH 1998 DEVICE DESCRIPTION FEATURES The ZRC250 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, as well as packages for through hole requirements. • • • • • • • • • • The ZRC250 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC250 is recommended for operation between 20µA 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 and SO8 packages TO92 style packages No stabilising capacitor required Low knee current, 15µA typical Typical TC 30ppm/°C Typical slope resistance 0.4Ω ± 3, 2 and 1% tolerance Industrial temperature range Operating current 20µA to 5mA Transient response, stable in less than 10µs Optional extended current range APPLICATIONS • • • Battery powered and portable equipment. Instrumentation. Test equipment. SCHEMATIC DIAGRAM V R G nd 4-247 ZRC250 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 CONDITIONS SYMBOL PARAMETER LIMITS MIN VR Reverse Breakdown Voltage IMIN Minimum Operating Current IR Recommended Operating Current TC † Average Reverse Breakdown Voltage Temp. Co. mA 30 90 ppm/°C 0.4 1 Ω 0.8 Ω IR(min) to IR(max) Reverse Dynamic Impedance IR = 1mA f = 100Hz IAC= 0.1 IR 0.3 EN Wideband Noise Voltage IR = 150µA f = 10Hz to 10kHz 60 µV(rms) 40 (VR(max)−VR(min)) x 1000000 VR x (T(max)−T(min)) Reverse Current (µA) 30 Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range. RS = V µA ZR § 1 2 3 5 Slope Resistance TC = 2.525 2.55 2.575 20 13 0.02 RS § † UNITS TYP MAX 2.475 2.5 2.45 2.5 2.425 2.5 IR=150µA TOL% VR Change(IR (min) to IR (max)) IR (max) − IR (min) 20 TA=25°C 10 0 0 1.0 2.0 Reverse Voltage (V) Reverse Characteristics 4-248 3.0 ZRC250 TYPICAL CHARACTERISTICS 1.4 2.51 IR=150µA to 5mA Reference voltage (V) Forward Voltage (V) 1.2 1.0 0.8 0.6 0.4 2.50 2.49 2.48 0.2 2.47 0.001 0.01 1 0.1 100 10 -40 -20 0 20 60 40 Forward Current (mA) Temperature (°C) Forward Characteristics Temperature Drift 80 1000 1.4 IR=150µA 85°C 25°C -40°C 1.0 Slope resistance (Ω) Slope resistance (Ω) 1.2 0.8 0.6 0.4 100 10 IR=5mA 1 0.2 IR=1mA 1 0.1 10 10 100 100K 10K Slope Resistance v Current Slope Resistance v Frequency VIN (V) VIN (V) 1K Frequency (kHz) 10 0 10 0 ≈ ≈ IR=5mA 2 IR=5mA 3 IR=150µA 2 1 IR=150µA 1 VR (V) VR (V) 100 Reference Current (mA) 0 0 4 8 12 0 0 16 Time (µs) 4 8 12 16 Time (µs) Transient Response - Single pulse Transient Response - Repetitive Test 4-249 ZRC250 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 4-250 ZRC250 ORDERING INFORMATION Part No Tol% Package Partmark Part No Tol% Package Partmark ZRC250A03 3 E-Line • ZRC25003 ZRC250R03 3 E-Line * ZRC250R3 ZRC250A02 2 E-Line • ZRC25002 ZRC250R02 2 E-Line * ZRC250R2 ZRC250A01 1 E-Line • ZRC25001 ZRC250R01 1 E-Line * ZRC250R1 ZRC250F03 3 SOT23 25G ZRC250Y03 3 E-Line † ZRC25003 ZRC250F02 2 SOT23 25H ZRC250Y02 2 E-Line † ZRC25002 ZRC250F01 1 SOT23 25J ZRC250Y01 1 E-Line † ZRC25001 ZRC250N803 3 SO8 ZRC25003 ZRC250N802 2 SO8 ZRC25002 ZRC250N801 1 SO8 ZRC25001 * E-Line 3 pin Reversed † E-Line 2 pin • E-Line 3 pin 4-251