Data Sheet

ManualsBrandsEvil Mad Scientist ManualsSoldering KitsThe XL741 Discrete Op-Amp Kit Soldering Kit

XL741 Kitv2.0 Datasheet (Rev A, July 2015) 1

The XL741 Discrete Operational Ampliﬁer is a

faithful and functional transistor-scale replica of the

classic

µa741 op-amp integrated circuit.

collaboration with Evil Mad Scientist Laboratories.

The latest version of this document and additional

resources about 741 op-amps are available at:

http://wiki.evilmadscientist.com/XL741

Main Speciﬁcations

• Kit type: Through-hole soldering kit

• Assembly instructions: Printed, included with kit

• Assembly time: 30-60 minutes (typical)

• Function: Equivalent circuit to

µa741 IC.

Some performance characteristics differ; Refer to Abs.

Maximum ratings and Electrical Characteristics

• RoHS compliance: All kit components are RoHS

compliant (lead free)

• Connection methods: Terminal posts (bare wire, lug,

or alligator clip) or solder

XL741

Discrete Operational Ampliﬁer

Evil Mad Scientist Laboratories / evilmadscientist.com

175 San Lazaro Ave., Ste. 150 Sunnyvale CA 94086

Questions? Please contact us: sales@evilmadscientist.com

DATASHEET

Connection Diagram / Pinout

Re-create one of the most classic, popular,

and all-around useful chips of all time.

Kit version 2.0

Summary of content (8 pages)

PAGE 1
Evil Mad Scientist Laboratories / evilmadscientist.com 175 San Lazaro Ave., Ste. 150 Sunnyvale CA 94086 Questions? Please contact us: sales@evilmadscientist.com DATASHEET Kit version 2.0 741 XL Discrete Operational Ampliﬁer Re-create one of the most classic, popular, and all-around useful chips of all time. The XL741 Discrete Operational Amplifier is a faithful and functional transistor-scale replica of the classic µa741 op-amp integrated circuit. Designed by Eric Schlaepfer (tubetime.
PAGE 2
Kit Contents Printed circuit board w/ threaded inserts. Aluminum Display Stand (2 pieces) Resistors Transistors Capacitor Screws and spacers for stand Diodes Thumbscrew terminal posts (color coded red, black, yellow, and gray) Contents of the XL741 kit: • The XL741 printed circuit board (extra thick 0.
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Schematic Diagram !"" % % % % % # % % % % $ % # # % % ! % %
PAGE 4
Parameter Supply Voltage, Positive2 Supply Voltage, Negative Differential Input Voltage3 Input Voltage (any input) 4 Notes: IN AR Y Absolute Maximum Ratings1 Symbol Value Unit VCC+ +18 V VCC- -18 V VID ±30 V VIN Lesser of VCC or ±15 V PR EL IM 1. Exceeding Absolute Maximum Ratings may cause permanent damage to the device. Please refer to Electrical Characteristics for recommended operating parameters. 2. Input voltages are measured with respect to the midpoint between VCC+ and VCC- . 3.
PAGE 5
Electrical Characteristics Parameter IN AR Y At VCC = ± 15 V, TA = 25 °C (unless otherwise specified) Symbol Input Offset Voltage Typ Unit 2.0 mV IIO 20 nA IIB 80 nA ri 2.
PAGE 6
Additional Photos Bare PCB Assembled kit with stand and terminal posts (top view) Assembled kit with stand and terminal posts (bottom view) XL741 Kit v2.
PAGE 7
Block Diagram ! "# $ $ Example Circuits Voltage Follower (analog buffer): Vout = Vin Vin should be in range ±13 V. Inverting Amplifier Rf Ri Vin should be in range ±13 V. XL741 Kit v2.0 Datasheet (Rev A, July 2015) Vout = - Vin Rf Ri • If Ri = Rf = 10 kΩ, then Gain = -1. • If Ri =10 kΩ, and Rf =20 kΩ then Gain = -2.
PAGE 8
Printed Circuit Board: Physical layout and mounting holes Terminal hole X8 • PCB in kit has 8-32 threaded insert (PEM #KF2-832-ET) pre-installed. • Bare PCB: .250” Thru Mounting hole X6 .145” Thru (#6 Clearance) Note: All dimensions are in INCHES. Additional physical specifications: • • • • • • • Printed Circuit Board size: 5.215 X 3.175 inches (13.25 X 8.06 cm) wide PCB thickness: 0.100" (2.54 mm) nominal, not including threaded inserts PCB thickness: 0.196" (4.