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Old 21st September 2003, 09:14 PM   #1
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Default STK4873 good or not ?

Got 2 of them from a friend. Brand new in boxes and I wonder if somebody can comment on their quality ( if they have that ).

I searched the web but I couldn't find a datasheet. I only found they have an idling current of 120 mA which seems OK. Just one schematic showed up in Google and it was a kind of standard application for various types of STK chips. Maybe one of you has a datasheet/schematic ( PCB design ) ?
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Old 22nd September 2003, 01:45 AM   #2
mcp is offline mcp  United States
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Haven't tried it but managed to unearth a datasheet (STK4873.pdf)
Hope it helps. Cheers.
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Old 22nd September 2003, 05:59 PM   #3
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Thanks MCP, unfortunately I can't read the pin numbers ! I am sure someone can read them so I guess that won't be a real problem. I see that the total drawn current is 120 mA max and 70 mA typical. Too bad ! Just hoped it would just be the idling current. I have more info anyway and a different schematic than I already had.

Is there someone that can comment on the subjective soundquality of these modules ?
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Old 22nd September 2003, 07:02 PM   #4
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Jean-paul I have a pair of the STK 4042 and basically what you have is in the same family/specs.
They dont exibit the same performance as the LM/OPA family of chip amps but I figure they will come in handy for building an amp for my outdoor speakers or maybe for one of my computers.
as far as sound goes I had an AKAI amplifier years ago that incorperated them and it sounded pretty good for a 50W per channel amp


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Old 22nd September 2003, 09:18 PM   #5
Netlist is offline Netlist  Belgium
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Hi Jean-paul
I can't tell you anything about the sonic performance of this chip but only provide you with some more data.
Here you go:
STK4773: 2x NF-E, 26V, >2x10W(19V/8ohm)
STK4793: =STK 4773: 31V, 2x>15W(22V/8ohm)
STK4803: =STK 4773: 35V, 2x>20W(24V/8ohm)
STK4813: =STK 4773: 35V, 2x>20W(24V/8ohm)
STK4833: =STK 4773: 39V, 2x>25W(25,5V/8ohm)
STK4843: =STK 4773: 43V, 2x>30W(27,5V/8ohm)
STK4853: =STK 4773: 43V, 2x>30W(27,5V/8ohm)
STK4863: =STK 4773: 47V, 2x>35W(30V/8ohm)
STK4873: =STK 4773: 43V, 2x>35W(30V/8ohm)
STK4893: =STK 4773: 46V, 2x>40W(32V/8ohm)
STK4913: =STK 4773: 50V, 2x>50W(35V/8ohm)


So, all are the same family of the 4773.
Here is a better drawing: http://www.datadart.com/home/Html/Images/Stk48xx.pdf

/Hugo

P.S. You should bookmark that site. A lot of datasheets over there.
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