Matched Monolithic Quad Transistor MAT14 FEATURES PIN CONFIGURATION Low offset voltage: 400 V maximum C 1 14 C 1 4 B 2 13 B High current gain: 300 minimum 1 4 E 3 12 E 1 MAT14 4 Excellent current gain match: 4% maximum SUB 4 TOP VIEW 11 SUB Low voltage noise density at 100 Hz, 1 mA (Not to Scale) E 5 10 E 2 3 3 nV/Hz maximum B 6 9 B 2 3 Excellent log conformance C 7 8 C 2 3 Bulk resistance (r ) = 0.6 maximum BE Figure 1. Guaranteed matching for all transistors APPLICATIONS Low noise op amp front end Current mirror and current sink/source Low noise instrumentation amplifiers Voltage controlled attenuators Log amplifiers GENERAL DESCRIPTION The MAT14 is a quad monolithic NPN transistor that offers verified to meet stated limits. Device performance is guaranteed excellent parametric matching for precision amplifier and at an ambient temperature of 25C and over the industrial tem- nonlinear circuit applications. Performance characteristics perature range. of the MAT14 include high gain (300 minimum) over a wide The long-term stability of matching parameters is guaranteed range of collector current, low noise (3 nV/Hz maximum at by the protection diodes across the base emitter junction of 100 Hz, I = 1 mA), and excellent logarithmic conformance. C each transistor. These diodes prevent degradation of beta and The MAT14 also features a low offset voltage of 100 V typical matching characteristics due to reverse bias, base emitter current. and tight current gain matching to within 4%. Each transistor of The superior logarithmic conformance and accurate matching the MAT14 is individually tested to data sheet specifications. characteristics of the MAT14 make it an excellent choice for use For matching parameters (offset voltage, input offset current, in log and antilog circuits. The MAT14 is an ideal choice in and gain match), each of the dual transistor combinations are applications where low noise and high gain are required. Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 2010 Analog Devices, Inc. All rights reserved. 09045-001MAT14 TABLE OF CONTENTS Features .............................................................................................. 1 Thermal Resistance .......................................................................4 Applications ....................................................................................... 1 ESD Caution...................................................................................4 Pin Configuration ............................................................................. 1 Typical Performance Characteristics ..............................................5 General Description ......................................................................... 1 Theory of Operation .........................................................................8 Revision History ............................................................................... 2 Applications Information .............................................................8 Specifications ..................................................................................... 3 Outline Dimensions ..........................................................................9 Electrical Characteristics ............................................................. 3 Ordering Guide .............................................................................9 Absolute Maximum Ratings ............................................................ 4 REVISION HISTORY 12/10Rev. 0 to Rev. A Changes to General Description .................................................... 1 Changes to Operating Temperature Range in Table 2 ................. 4 Updated Outline Dimensions ......................................................... 9 Changes to Ordering Guide ............................................................ 9 10/10Revision 0: Initial Version Rev. A Page 2 of 12