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| ZXRE125 SOT23 MICROPOWER 1.22V VOLTAGE REFERENCE DESCRIPTION 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 30A to 5mA operating current range with a FEATURES * * * * * * * * High performance replacement for ZRA124 and ZRA125 references Small outline SOT23 SO8 and E-Line alternatives available 30A knee current 20ppm/C typical temperature coefficient Unconditionally stable 0.5%, 1%, 2% and 3% tolerance Contact Zetex marketing for availability of tighter tolerance devices typical temperature coefficient of only 20ppm/C. The device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. This device offers a SOT23 pin for pin compatible replacement of the ZRA124 and ZRA125 series of voltage references. SO8 and E-Line (TO92 style) packages can also be made available. * * * * * * * * Battery powered equipment Precision power supplies Portable instrumentation Portable communications devices Notebook and palmtop computers Data acquisition systems A/D and D/A converters Test equipment SCHEMATIC DIAGRAM VR APPLICATIONS CIRCUIT 1.5V 4k7 1.22V Gnd Low quiescent reference from a 1.5V battery source. APPLICATIONS ISSUE 4 - JANUARY 2002 1 ZXRE125 ABSOLUTE MAXIMUM RATINGS Reverse Current Forward Current Operating temperature. Storage temperature. 30mA 10mA -40 to 85C -55 to 125C Power Dissipation (Tamb=25C) SOT23 330mW SO8 625mW E-Line 500mW ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25C SYMBOL PARAMETER CONDITIONS LIMITS MIN VR Reverse Breakdown Voltage I R =100A 1.214 1.208 1.196 1.183 TYP 1.22 1.22 1.22 1.22 MAX 1.226 1.232 1.244 1.257 30 0.03 I R(min) to I R(max) IR=30A to 1mA IR=1mA to 5mA I R =1mA f =100Hz I AC =0.1 I R IR=8A to 100A f=10Hz to 10kHz 5 TOL. % UNITS 0.5 1 2 3 V I MIN IR TC Minimum Knee Current Recommended Operating Current Range Average Reverse Breakdown Voltage Temperature Coefficient Reverse Breakdown Voltage change with Current Reverse Dynamic Impedance A mA ppm/C 5 20 90 VR IR ZR 1 10 0.2 0.6 mV mV EN Wideband Noise Voltage 60 V(rms) TC = (VR (max )-VR ( min )) x 1000000 Note: V R(max) - V R(min) is the maximum deviation in reference voltage measured over the full operating temperature range. Note: 0.5% SOT23 only. Reverse Current (mA) VR x (T(max )-T(min )) 4 3 TA=-40c TO +85C 2 1 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Reverse Voltage (V) Reverse Characteristics ISSUE 4 - JANUARY 2002 2 ZXRE125 TYPICAL CHARACTERISTICS 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.1 1 10 100 1000 1.25 1.24 Reference Voltage (V) Forward Voltage (V) 1.23 1.22 1.21 1.20 1.19 -40 -20 0 20 40 60 80 Forward Current (mA) Temperature (C) Forward Characteristics Temperature Drift 14 12 100 Slope Resistance () 10 8 6 4 2 0 0.001 -40C 25C 85C Slope Resistance () 10 1 20mA 1mA 100A 0.01 0.1 1 10 100 0.1 0.01 0.1 1 10 100 Reference Current (mA) Frequency (kHz) Slope Resistance v Current 1.5 1.0 0.5 10A 20mA Slope Resistance v Frequency 80 70 Wideband Noise (V) 80 120 140 VR (V) 60 50 40 30 20 10 0 0 Iin (A) 10 0 0 40 0 10 20 30 40 50 60 70 80 90 100 Time (s) Reference Current (A) Transient Response Noise Voltage ISSUE 4 - JANUARY 2002 3 ZXRE125 Ordering Information Device ZXRE125CF ZXRE125DF ZXRE125EF ZXRE125FF ZXRE125DN8 ZXRE125EN8 ZXRE125FN8 ZXRE125DR ZXRE125ER ZXRE125FR TOL% 0.5 1 2 3 1 2 3 1 2 3 Package SOT23 SOT23 SOT23 SOT23 SO8 SO8 SO8 E-Line E-Line E-Line Partmarking 12J 12H 12G 12F ZXRE125D ZXRE125E ZXRE125F ZXRE125D ZXRE125E ZXRE125F NOTE: For tape and reel options add suffix TA to the part number eg ZXRE125DFTA Connection Diagrams SOT23 Package Suffix - F SO8 Package Suffix - N8 E-Line, 3 pin,Rev Package Suffix - R Top View - Pin 1 floating or connected to pin 2 Top View Zetex plc. Fields New Road, Chadderton, Oldham, OL9-8NP, United Kingdom. Telephone: (44)161 622 4422 (Sales), (44)161 622 4444 (General Enquiries) Fax: (44)161 622 4420 Bottom View - Pin 3 floating or connected to pin 1 Zetex GmbH Streitfeldstrae 19 D-81673 Munchen Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 Zetex Inc. 47 Mall Drive, Unit 4 Commack NY 11725 USA Telephone: (631) 543-7100 Fax: (631) 864-7630 Zetex (Asia) Ltd. 3701-04 Metroplaza, Tower 1 Hing Fong Road, Kwai Fong, Hong Kong Telephone:(852) 26100 611 Fax: (852) 24250 494 These are supported by agents and distributors in major countries world-wide Zetex plc 2001 http://www.zetex.com This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. ISSUE 4 - JANUARY 2002 4 |
Price & Availability of ZXRE125
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