LM4132 Datasheet | National Semiconductor

Description The LM4132 family of precision voltage references performs parable to the best laser-trimmed bipolar references, but in cost effective CMOS technology. The key to this break through is the use of EEPROM registers for correction of curvature, tempco, and accuracy on a CMOS bandgap architecture that allows package level programming to overe assembly shift. The shifts in voltage accuracy and tempco during assembly of die into plastic packages limit the accuracy of references trimmed with laser techniques. Unlike other LDO references, the LM4132 is capable of delivering up to 20m A and does not require an output capacitor or buffer amplifier. These advantages and the SOT23 packaging are important for space-critical applications. Series references provide lower power consumption than shunt references, since they do not have to idle the maximum possible load current under no load conditions. This advantage, the low quiescent current (60µA), and the low dropout voltage (400m V) make the LM4132 ideal for batterypowered solutions. The LM4132 is available in five grades (A, B, C, D and E) for greater flexibility. The best grade devices (A) have an initial accuracy of 0.05% with guaranteed temperature coefficient of 10ppm/˚C or less, while the lowest grade parts (E) have an initial accuracy of 0.5% and a tempco of 30ppm/˚C. Features n n n n n n n n n n Output initial voltage accuracy 0.05% Low temperature coefficient 10ppm/˚C Low Supply Current, 60µA Enable pin allowing a 3µA shutdown mode 20m A output current Voltage options 2.048V, 2.5V, 4.096V Custom voltage options available (1.8V to 4.096V) VIN range of VREF + 400m V to 5.5V @ 10m A Stable with low ESR ceramic capacitors SOT23-5 Package Applications n n n n n n n n n n n Typical Application Circuit - Note: The capacitor CIN is required and the capacitor COUT is optional. w w .D w t a S a e h Instrumentation & Process Control Test Equipment Data Acquisition Systems Base Stations Servo Systems Portable,...