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Old 27th August 2002, 02:00 PM   #1
palesha is offline palesha  India
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Location: Pune India
Default Bucket brigade IC

I am designing one active surround sound system. Delay circuit is required to be added. For that i require BBD IC. I need the IC which is presently available.
Mahendra Palesha
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Old 27th August 2002, 02:24 PM   #2
audioPT is offline audioPT  Portugal
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Hi!

Try this ones:

NTE1641
Integrated Circuit
1024 Stage BBD for Audio Signal Delays
Description:
The NTE1641 is a 1024每stage long delay low noise BBD that provides a signal delay of up to
51.2msec. This device is suitable for use as the reverberation effect of an electronic musical instrument,
or in stereo equipment, due to its long delay times.
Features:
- Variable delay time of audio signal: 5.12ms to 51.2ms.
- Clock component cancellation capability.
- No insertion loss: Li = 0dB typ.
- Wide dynamic range: S/N ≅ 80dB typ.
- Wide frequency response: fi ≒ 12kHZ.
- Low distortion: THD = 0.5% typ. (Vi = 0.78Vrms)
- Clock frequency range: 10 to 100kHZ.
- P channel silicon gate process.
- 8每Lead DIP plastic package.

and


NTE1639
Integrated Circuit
CMOS Clock Generator/Driver for BBDs
Description:
The NTE1639 is a CMOS LSI Clock Generator ina 8每Lead DIP type package capable of generating
two phase clock signals of low output impedance for use as a BBD driver. The built每in VGG power
supply circuit provides the proper voltages needed for driving BBDs such as the NTE1641.
Features:
- BBD Direct Driving Capability of up to two BBD*s
- Self and Separate Oscillations.
- Two Phase Clock Output (Duty: 1/2)
- Built每in VGG Voltage Generator for Driving the NTE1641 BBD.
- Single Power Supply: 每8V to 每16V.
Aplications:
- BBD Clock Generator/Driver.

They work together.

You will find them at www.nteinc.com

I can put here the datasheets.

Best regards

Pedro Nuno Martins, aka sapito
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Old 27th August 2002, 02:26 PM   #3
audioPT is offline audioPT  Portugal
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Please, download the NTE1639 and NTE1641 datasheets (they are in PDF format).

Ok, in ZIP format

Pedro Nuno Martins, aka sapito
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Old 27th August 2002, 02:28 PM   #4
audioPT is offline audioPT  Portugal
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Ops!!
I forget the file
Attached Files
File Type: zip nte.zip (50.3 KB, 41 views)
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Old 3rd February 2004, 01:57 PM   #5
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Location: Southampton
Default reverb unit

WHERE CAN I GET A CIRCUIT DESIGN FOR A REVERBERATION UNIT USING THESE CHIPS?
IT IS FOR USE WITH PHONO INPUT AND OUTPUT.

THANKS
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Old 3rd February 2004, 01:58 PM   #6
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Default Continued

Please send me information direct to matwhite@yahoo.com
thanks
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