ZXRE125DR Diodes Incorporated

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 8A 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 (Top View) maintaining excellent stability. 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 4A knee current 20ppm/C typical temperature coefficient OBSOLE TE Unconditionally stable (Bottom View) 0.5%, 1%, 2%, and 3% tolerance Pin 3 floating or connected to pin 1 Green molding compound (No Br, Sb) Schematic Diagram Applications Battery powered equipment Precision power supplies Portable instrumentation Portable communication devices Data acquisition systems Application Circuit 1 of 5 June 2010 ZXRE125 Diodes Incorporated www.diodes.com Document number: DS32170 Rev. 8 - 2 A Product Line of Diodes Incorporated ZXRE125 Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated) Parameter Symbol Rating Unit Reverse Current V 30 mA Z Forward Current 10 mA Operating Temperature T -40 to 85 C OMP Storage Temperature T -55 to 125 C STG Power Dissipation (T = 25C) P 330 mW D AMB Electrical Characteristics (Test conditions: T = 25C, unless otherwise specified.) amb Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit (1) 1.214 1.220 1.226 C/0.5 1.208 1.220 1.232 D/1 Reverse breakdown voltage V V I = 100A R R 1.196 1.220 1.244 E/2 1.183 1.220 1.257 F/3 Minimum operating current 4 8 A I MIN Recommended operating current 0.008 20 mA I R Average reverse breakdown (*) I to I 20 75 ppm/C T R(min) R(max) C voltage temperature coefficient V Reverse Breakdown Change I = 30A to 1mA 1 R R mV I R with Current Voltage I = 1mA to 12mA 10 R I = 1mA R Reverse dynamic impedance f = 100Hz 0.2 0.6 Z R I = 0.1I AC R I = 8A to 100A R E Wideband noise voltage 60 V(rms) N f = 10Hz to 10kHz Notes: 1. (*) (V V ) x 1000000 R(MAX) R(MIN) T = C V x (T T ) R (MAX) (MIN) Note: V - V is the maximum deviation in reference R(MAX) R(MIN) voltage measured over the full operating temperature range. 2 of 5 June 2010 ZXRE125 Diodes Incorporated www.diodes.com Document number: DS32170 Rev. 8 - 2