Hitachi Servo/RF-Amp HA12158NT ("HA 12158 NT", HA12158, "HA 12158NT") from Linn Karik - diyAudio
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Old 4th October 2009, 05:58 PM   #1
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Default Hitachi Servo/RF-Amp HA12158NT ("HA 12158 NT", HA12158, "HA 12158NT") from Linn Karik

I don't find a datasheet from this integrated circuit. By the service manual of the compact disc player from Denon's system "UCD-110" (UCD110) I find only a block diagram. Hitachi (now Renesas) also don't have this datasheet.
Who knows a download source?
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Old 1st December 2009, 09:15 PM   #2
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I still need this data sheet about this Hitachi Servo/RF-Amp IC
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Old 30th January 2010, 01:33 PM   #3
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I have check different original data books from Hitachi, but this IC isn't inside. There are two reasons, why nobody find this data sheet:
1) There are only single sheets, but no data book, which is included with this IC (and therefore "Datasheetarchive" and "Alldatasheet" haven't store it).
2) This data sheet / data book exist only in japan language
If I have the exactly title of the data book, where this IC is inside (even if only the japan language available), then I can use the interlibrary loan service of the university library im my aera.

Therefore the question: Who knows the exactly title of a Hitachi data book, where HA12158NT (HA12158) is inside ?

From this IC DIL outline and QFP outline was available earlier



In the attachement various Hitachi data books, that I already know:
Attached Files
File Type: pdf Hitachi Data Book var Cover.pdf (144.9 KB, 31 views)

Last edited by tiefbassuebertr; 30th January 2010 at 01:38 PM.
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Old 25th March 2010, 12:38 AM   #4
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still no informations available?
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Old 29th April 2010, 06:34 PM   #5
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the diyaudio member "artegagt" from Estonia have send me a short form data sheet from a scan - I have make two exemplares - first the internal circuit so as outline:
Attached Images
File Type: jpg HA12158NT-circuit.jpg (465.5 KB, 69 views)
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Old 29th April 2010, 06:43 PM   #6
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... and second attachement for the pin describtion. He had it found by a russian forum - unfortunately he don't mention the URL. Perhaps one of you know this URL respective can post there the question, from which data book or folder this scan comes
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File Type: jpg HA12158NT-pin-describtion.jpg (726.2 KB, 57 views)

Last edited by tiefbassuebertr; 29th April 2010 at 06:45 PM.
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Old 27th June 2011, 01:14 PM   #7
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By chance I have found top views of opened devices. There are two different outlines of the HA12158: DIL and QFP (see attachement).
The version with QFP outline uses the square stone outline by the smps (unknown for me), while the DIL outline uses the Brilliant HDI SMPS (round silver box) or the black toroidal transformer (I know this version very good).
Which of both is older and newer?
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