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#1
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IC Identification
Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working.
It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. |
#2
Posted to rec.audio.pro
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IC Identification
On 08/02/2015 19:05, mcp6453 wrote:
Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working. It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. Probably a generic dual op-amp. Maybe one of these, possibly selected by test? http://www.applegate.co.uk/b2b-produ...S-1237369.html Or, if it was DOA, contact the vendor and return it. -- Tciao for Now! John. |
#3
Posted to rec.audio.pro
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IC Identification
On Sun, 08 Feb 2015 14:05:02 -0500, mcp6453 wrote:
Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working. It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. Most likely an AN6884, which is a 5 dot LED driver suited for VU meters http://www.classiccmp.org/rtellason/chipdata/an6884.pdf d |
#4
Posted to rec.audio.pro
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IC Identification
On 2/8/2015 2:50 PM, Don Pearce wrote:
On Sun, 08 Feb 2015 14:05:02 -0500, mcp6453 wrote: Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working. It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. Most likely an AN6884, which is a 5 dot LED driver suited for VU meters http://www.classiccmp.org/rtellason/chipdata/an6884.pdf It can't be that one because the one shown in the link has two channels. |
#5
Posted to rec.audio.pro
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IC Identification
On 2/8/2015 5:47 PM, mcp6453 wrote:
On 2/8/2015 2:50 PM, Don Pearce wrote: On Sun, 08 Feb 2015 14:05:02 -0500, mcp6453 wrote: Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working. It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. Most likely an AN6884, which is a 5 dot LED driver suited for VU meters http://www.classiccmp.org/rtellason/chipdata/an6884.pdf It can't be that one because the one shown in the link has two channels. Um, it's also analog. == Later... Ron Capik -- |
#6
Posted to rec.audio.pro
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IC Identification
On 2/8/2015 2:31 PM, John Williamson wrote:
On 08/02/2015 19:05, mcp6453 wrote: Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working. It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. Probably a generic dual op-amp. Maybe one of these, possibly selected by test? http://www.applegate.co.uk/b2b-produ...S-1237369.html Or, if it was DOA, contact the vendor and return it. The closest I've been able to find is a TA7318P. The pins match. |
#7
Posted to rec.audio.pro
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IC Identification
mcp6453 wrote:
Can anyone tell me the likely part number of the IC in this module? I bought one of the modules, and it's not working. It's in a 9-pin SIP package. http://goo.gl/WVNOk6 The part number is sanded off the IC. From the description I can't even tell what the module is supposed to do. Is this a speaker-level-to-line-level interface? If you send me one, I can tell you what's inside it.. but this being Chinese production, there might not be any chip in the package at all. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#8
Posted to rec.audio.pro
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IC Identification
On 2/9/2015 2:43 PM, Scott Dorsey wrote:
From the description I can't even tell what the module is supposed to do. Is this a speaker-level-to-line-level interface? You made me look. From the connection diagram, I'd guess it was (some sort of) line level in, with an output to drive (some sort of) a meter with a VU scale. It's powered by 12 V DC. Since there are hardly any other components on the board but capacitors and a couple of diodes, I'd guess that the IC is a dual op amp. If one channel works and the other doesn't, that might help troubleshoot it. If neither channel works, buy another one for sixteen bucks. -- For a good time, visit http://mikeriversaudio.wordpress.com |
#9
Posted to rec.audio.pro
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IC Identification
On 2/9/2015 10:00 AM, Mike Rivers wrote:
On 2/9/2015 2:43 PM, Scott Dorsey wrote: From the description I can't even tell what the module is supposed to do. Is this a speaker-level-to-line-level interface? You made me look. From the connection diagram, I'd guess it was (some sort of) line level in, with an output to drive (some sort of) a meter with a VU scale. It's powered by 12 V DC. Since there are hardly any other components on the board but capacitors and a couple of diodes, I'd guess that the IC is a dual op amp. If one channel works and the other doesn't, that might help troubleshoot it. If neither channel works, buy another one for sixteen bucks. It's a TA7318P, from what I can tell. It appears to be an obsolete part. There must be a boat load of them still available. Newer versions of this circuit are probably using an op amp, as suggested. I got mine working, so all is well on that front. |
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