ZXRE4041 SOT23 MICROPOWER 1.225V VOLTAGE REFERENCE DESCRIPTION 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. The ZXRE4041 is a bandgap circuit designed to achieve a precision micropower voltage reference of 1.225 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% C grade for precision applications. Excellent performance is maintained over the 30A to 12mA operating current This device offers a SOT23 pin for pin compatible alternative to LM4041 voltage references. SO8 and E-Line (TO92 style) packages can also be made available. FEATURES APPLICATIONS High performance alternative to LM4041 Battery powered equipment Small outline SOT23 Precision power supplies SO8 and E-Line alternatives available Portable instrumentation 30A knee current Portable communications devices 20ppm/°C typical temperature coefficient Notebook and palmtop computers Unconditionally stable Data acquisition systems 0.5%, 1%, 2% and 3% tolerance A/D and D/A converters Contact Zetex marketing for availability of tighter tolerance devices Test equipment SCHEMATIC DIAGRAM APPLICATIONS CIRCUIT VR Gnd Low quiescent reference from a 1.5V battery source. ISSUE 2 - JULY 1999 1 ZXRE4041 ABSOLUTE MAXIMUM RATINGS Reverse Current Forward Current Operating temperature. Storage temperature. Power Dissipation (Tamb=25°C) SOT23 330mW SO8 625mW E-Line 500mW 30mA 10mA -40 to 85°C -55 to 125°C ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER CONDITIONS LIMITS I R =100 A MIN TYP MAX 1.214 1.208 1.196 1.183 1.225 1.225 1.225 1.225 1.226 1.232 1.244 1.257 VR Reverse Breakdown Voltage I MIN Minimum Knee Current IR Recommended Operating Current Range TC † Average Reverse Breakdown Voltage Temperature Coefficient I R(min) to I R(max) VR IR Reverse Breakdown Voltage change with Current IR=30A to 1mA IR=1mA to 12mA ZR Reverse Dynamic Impedance I R =1mA f =100Hz I AC =0.1 I R 0.2 EN Wideband Noise Voltage IR=8A to 100A f=10Hz to 10kHz 60 TC VR min x 1000000 VR x T max T min max Note: V R(max) - V R(min) is the maximum deviation in reference voltage measured over the full operating temperature range. ‡ Note: C grade SOT23 only. 20 UNITS C‡ D E F V 30 A 12 mA 75 ppm/°C 1 10 mV mV 0.6 V(rms) 5 4 Reverse Current (mA) † VR 0.03 GRADE 3 TA=-40c TO +85C 2 1 0 0 0.2 0.4 0.6 0.8 1.0 Reverse Voltage (V) Reverse Characteristics ISSUE 2 - JULY 1999 2 1.2 1.4 ZXRE4041 1.6 1.25 1.4 1.24 Reference Voltage (V) Forward Voltage (V) TYPICAL CHARACTERISTICS 1.2 1.0 0.8 0.6 0.4 0.2 0.1 1 10 100 1000 1.23 1.22 1.21 1.20 1.19 -40 -20 0 Forward Current (mA) Forward Characteristics 60 80 100 12 Slope Resistance ( ) Slope Resistance ( ) 40 Temperature Drift 14 20 Temperature (°C) 10 8 6 4 -40°C 25°C 85°C 2 0 0.001 0.01 0.1 1 10 10 1 20mA 1mA 100A 0.1 0.01 100 0.1 Reference Current (mA) 1 10 100 Frequency (kHz) Slope Resistance v Frequency Slope Resistance v Current 80 1.5 Wideband Noise ( V) VR (V) 70 1.0 10A 0.5 20mA Iin ( A) 0 ⬇ ⬇ 10 0 60 50 40 30 20 10 0 0 40 80 120 140 0 Time (s) 10 20 30 40 50 60 70 Reference Current (A) Transient Response Noise Voltage ISSUE 2 - JULY 1999 3 80 90 100 ZXRE4041 Ordering Information Device TOL% Grade Package Partmarking ZXRE4041CF 0.5 C SOT23 10J ZXRE4041DF 1 D SOT23 10H ZXRE4041EF 2 E SOT23 10G ZXRE4041FF 3 F SOT23 10F ZXRE4041DN8 † 1 D SO8 ZXRE4041D ZXRE4041EN8 † 2 E SO8 ZXRE4041E ZXRE4041FN8 † 3 F SO8 ZXRE4041F ZXRE4041DR † 1 D E-Line ZXRE4041D ZXRE4041ER † 2 E E-Line ZXRE4041E ZXRE4041FR † 3 F E-Line ZXRE4041F †Contact Zetex marketing for availability of these package options NOTE: for tape and reel options add suffix TA to the part number eg ZXRE4041DFTA Connection Diagrams SOT23 Package Suffix – F Top View – Pin 1 floating or connected to pin 2 SO8 Package Suffix – N8 E-Line, 3 pin,Rev Package Suffix – R Top View Bottom View – Pin 3 floating or connected to pin 1 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 Zetex GmbH Streitfeldstraße 19 D-81673 München 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: (516) 543-7100 Fax: (516) 864-7630 Zetex (Asia) Ltd. 3510 Metroplaza, Tower 2 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 1999 Internet: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 2 - JULY 1999 4