A Product Line of Diodes Incorporated ZXRE125 SOT23 MICROPOWER 1.22V VOLTAGE REFERENCE Description Pin Assignments The ZXRE125 is a bandgap circuit designed to achieve a precision micropower voltage reference of 1.22 volts. The device is available in the small outline SOT23 surface mount package which is ideal for applications where space saving is important. SOT23 tolerance is available to 0.5% for precision applications. Excellent performance is maintained over the 8µA to 20mA operating current range with a typical temperature coefficient of only 20ppm/°C. The device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. (Top View) Pin 1 floating or connected to pin 2 This device offers a SOT23 pin for pin compatible replacement of the ZRA124 and ZRA125 series of voltage references. Features • High performance 1.220V reference • Small outline SOT23 • 4μA knee current • 20ppm/°C typical temperature coefficient • • • Unconditionally stable 0.5%, 1%, 2%, and 3% tolerance Green molding compound (No Br, Sb) Applications • Battery powered equipment • Precision power supplies • Portable instrumentation • • Portable communication devices Data acquisition systems OBSOLETE (Bottom View) Pin 3 floating or connected to pin 1 Schematic Diagram Application Circuit ZXRE125 Document number: DS32170 Rev. 8 - 2 1 of 5 www.diodes.com June 2010 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRE125 Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated) Parameter Reverse Current Forward Current Operating Temperature Storage Temperature Power Dissipation (TAMB = 25°C) Electrical Characteristics Symbol Symbol VZ TOMP TSTG PD Parameter Reverse breakdown voltage IMIN IR Minimum operating current Recommended operating current Average reverse breakdown voltage temperature coefficient (*) Reverse Breakdown Change with Current Voltage ΔVR ΔIR Unit mA mA °C °C mW (Test conditions: Tamb = 25°C, unless otherwise specified.) VR TC Rating 30 10 -40 to 85 -55 to 125 330 ZR Reverse dynamic impedance EN Wideband noise voltage Condition IR = 100µA Min. 1.214 1.208 1.196 1.183 Typ. 1.220 1.220 1.220 1.220 4 Max. 1.226 1.232 1.244 1.257 8 20 20 75 ppm/°C 1 10 mV 0.6 Ω 0.008 IR(min) to IR(max) IR = 30μA to 1mA IR = 1mA to 12mA IR = 1mA f = 100Hz IAC = 0.1IR IR = 8µA to 100µA f = 10Hz to 10kHz 0.2 60 Tol. (%) C/0.5(1) D/1 E/2 F/3 Unit V µA mA µV(rms) Notes: 1. (*) TC = (VR(MAX) – VR(MIN)) x 1000000 VR x (T(MAX) – T(MIN)) Note: VR(MAX) - VR(MIN) is the maximum deviation in reference voltage measured over the full operating temperature range. ZXRE125 Document number: DS32170 Rev. 8 - 2 2 of 5 www.diodes.com June 2010 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRE125 Typical Characteristics ZXRE125 Document number: DS32170 Rev. 8 - 2 3 of 5 www.diodes.com June 2010 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRE125 Ordering Information(*) Order Reference ZXRE125CFTA ZXRE125DFTA ZXRE125EFTA ZXRE125FFTA Notes: Tol (%) 0.5 1 2 3 Device Mark Grade Status (*) 12J 12H 12G 12F C D E F Released Released Released Released Reel Size (inches) 7 7 7 7 Quantity per reel 3000 3000 3000 3000 Tape Width (mm) 8 8 8 8 * All ZXRE125 E-line variants are obsolete and no longer available for sale. Package Outline Dimensions E e e1 b 3 leads L1 D E1 A A1 L Dim. Millimeters Inches A A1 b c D e Min. Max. 1.12 0.01 0.10 0.30 0.50 0.085 0.20 2.80 3.04 0.95 NOM Min. Max. 0.044 0.0004 0.004 0.012 0.020 0.003 0.008 0.110 0.120 0.037 NOM c Dim. Millimeters Inches e1 E E1 L L1 - Min. Max. 1.90 NOM 2.10 2.64 1.20 1.40 0.25 0.60 0.45 0.62 - Min. Max. 0.075 NOM 0.083 0.104 0.047 0.055 0.0098 0.0236 0.018 0.024 - Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches ZXRE125 Document number: DS32170 Rev. 8 - 2 4 of 5 www.diodes.com June 2010 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRE125 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. 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