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[FAQ] LMxxxx

Blast from the Past! 1980 NSC Audio/Radio Handbook!

Howdy,

We've gotten several requests for this, so here it is!

Sorry the scan isn't 100% clear, but the print quality of the book from 1980 wasn't the best.

Lots of really cool info in this book!

/cfs-file/__key/communityserver-discussions-components-files/6/6138.1980-NSC-Audio-_2600_-Radio-Handbook-_2D00_-Part-1.pdf

/cfs-file/__key/communityserver-discussions-components-files/6/2335.1980-NSC-Audio-_2600_-Radio-Handbook-_2D00_-Part-2.pdf

LM1876 Non-isolated package connection

The LM1876 is available in two package options, an isolated 15-lead TO-220 style package and a non-isolated 15-lead TO-220 style package. Both versions have the same pinout (shown in the data sheet).

For the non-isolated version, the metal tab is internally connected to VEE. So, if a grounded heat sink is used, external isolation will be required.

LM4755 thermal tab connection

Q: Should they connect the heat sink to ground or Vdd? I did not see the connection suggestion in the datasheet.

A: The tab is physically tied to pin 5, so the pad on the PCB should be the same potential as that connected to pin 5.

LM48100 GUI

/cfs-file/__key/communityserver-discussions-components-files/6/LM48100PW_5F00_FA-Bench-Test.pdf

LM48100 GUI - Audio Amplifiers Forum - Audio Amplifiers - TI E2E Community

LM4935 GUI

This zip file contains the GUI for the LM4935. Unfortunately, due to it's age, it may only operate in Windows XP.

If you can't get this GUI to run on your set-up, please use a stand-alone I2C tool and the register map in the data sheet.

LM4935 Setup v1.2a.zip

LMxxxx EOL Information

Unfortunately some of the LM devices got caught up in an unavoidable technology process-node end of life. fortunately we can support orders for the device through the LTB date of 28 Sept 16, and can ship product through 28 March 2017.

TI's OpAmp business has a huge portfolio of newer parts that you can select from. Please refer to below table to find an alternative part for the LM part.

Our apologizes for any inconvenience this causes.

EOL Part Alternative Part # Comment
LM4562MA/NOPB OPA1602AID
LM4562NA/NOPB OPA2227P PDIP
LM833M/NOPB OPA1652AID
LM833MMX/NOPB OPA1652AID
LM833MX OPA1652AID
LM833N/NOPB LM833P PDIP
LME49600TS/NOPB BUF634F
LME49610TS/NOPB BUF634F
LME49710MA/NOPB OPA1611AID
LME49710MAX/NOPB OPA1611AID
LME49710NA/NOPB OPA227P PDIP
LME49720MA/NOPB OPA1602AID
LME49720NA/NOPB OPA2227P PDIP
LME49722MA/NOPB OPA1612AID
LME49722MAX/NOPB OPA1612AID
LME49723MA/NOPB OPA1652AID/OPA1662
LME49724MAX/NOPB OPA1632D
LME49724MR/NOPB OPA1632D
LME49725MA/NOPB OPA1662AID
LME49725MAX/NOPB OPA1662AID
LME49740MA/NOPB OPA1604AID
LME49740MAX/NOPB OPA1604AID
LME49740NA/NOPB OPA4227P PDIP
LME49743MT/NOPB OPA1664/OPA1654AID
LME49860MA/NOPB OPA1612AID
LME49860NA/NOPB OPA2227P PDIP
LME49870MA/NOPB OPA1611AID
LME49880MR/NOPB OPA1642AID
LME49880MRX/NOPB OPA1642AID
LME49990MA/NOPB OPA1611AID
LME49990MAX/NOPB OPA1611AID

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