SPX4041_04 Datasheet, PDF (1/9 Pages) Sipex Corporation – Precision 1.24V Shunt Voltage Reference

®
SPX4041
Precision 1.24V Shunt Voltage Reference
FEATURES
■ Voltage Tolerance........................1% and 2%
■ Wide Operating Curren..........100µA to 15mA
■ Low Temperature Coefficient.........50ppm/°C
■ Fixed Reverse Breakdown Voltage.......1.24V
■ No Output Capacitance Required
N/C 1
N/C 2
N/C 3
ANODE 4
SPX4041
8 Pin nSOIC
8 CATHODE
7 N/C
6 N/C
5 N/C
■ Two Terminal "Zener" Operation
■ Improved Replacement for TL431
Now Available in Lead Free Packaging
APPLICATIONS
■ Constant Current Source
■ Digital Voltmeter
■ Power Management
■ Precision Regulators
■ Battery Powered Equipment
■ Instrumentation
■ Automotive Electronics
■ Data Acquisition Systems
DESCRIPTION
The SPX4041 is a 2-terminal, temperature compensated, band-gap voltage reference which
provides a fixed 1.24V output for input currents between 160µA and 15mA. The bandgap voltage
(1.24V) is independently laser trimmed from the output voltage to achieve a very low temperature
coefficient, then the output voltage is trimmed to 1.24V. This trimming technique and the low
temperature coefficient (A grade: 50 ppm/°C) thin film resistor process gives a very stable device
over the full temperature range. The SPX4041 is available in the sub miniature 3 pin SOT-23,
3 pin TO-92 or 8 pin NSOIC packages. The operating temperature is -40°C to 85°C. The
SPX4041 advanced design eliminates the need for an external stabilized capacitor while insuring
stability with any capacitive load, making it easy to use.
TYPICAL APPLICATIONS CIRCUIT
Cathode (K)
+
-
1.24V
Figure 1: Block Diagram
Date: 11/29/04
Anode (A)
SPX4041 Precision 1.24V Shunt Voltage Reference
1
© Copyright 2004 Sipex Corporation