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Discontinued Modules
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Reference TDA1541A DAC Modules

Posted 14th June 2013 at 10:51 AM by dvb projekt
Updated 27th September 2013 at 01:27 PM by dvb projekt

TDA1541A DAC Module

Click the image to open in full size.
Click the image to open in full size.

- separate TL431 Shunt regulators for each voltage line
- independent voltage rail for the DEM reclock circuit
- I2S attenuator circuit
- shortest possible position for decoupling caps
- separate ground line for decoupling caps
- Ground plane
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- 35µm copper weight
- Board size 125mm x 125mm

in Stock

The price is:

TDA1541A DAC Module: $9

Worldwide shipping: $ 9
Europe shipping: $ 5
paypal fee: 3,9%

Shipping insurance on buyers request!


----------

The Ultra High Speed Buffer Module will be shipped "ready to use",
with three NC7SZ125 chips
...
Attached Files
File Type: pdf Reference TDA1541A DAC V2.3.pdf (559.7 KB, 395 views)
File Type: zip TDA1541A Project-BOM-Final.xls.zip (8.0 KB, 147 views)
File Type: pdf Takamisawa NA-Type.pdf (153.3 KB, 469 views)
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Tube-I-zator V3.0 - Out of production

Posted 5th April 2013 at 03:28 PM by dvb projekt
Updated 16th September 2013 at 05:16 PM by dvb projekt

Tube-I-zator V3.0

Click the image to open in full size.

The evolution brings the following changes:

- Anode PSU with Salas SSHV Shunt Reg. onboard
- External B+ Input for usage with other Anode PSU
- Heater PSU with C-R-C filtering
- Heater PSU with Softstart circuit
- Heater PSU Power LED

Thanks to John (-ecdesigns-) for the following suggestions!

- Grid stoppers to prevent unwanted oscillations
- Bias current injection for TDA1541A usage
- Pull-down resistors to keep the coupling cap output at GND-potential

Still on the Module:

- Heater switch for 6N2P or 12AX7 usage



An example for a balanced use (e.g. Bufalo II), you could see HERE.



The PCB has the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 193x157 mm
Surface
...
Attached Files
File Type: pdf Tube-I-zator V3.0.pdf (30.2 KB, 441 views)
File Type: zip Tube-I-zator V3.0 - BOM.xls.zip (7.6 KB, 181 views)
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Old

The Red Baron DAC Module V4.0 - Out of production

Posted 8th February 2013 at 08:34 AM by dvb projekt
Updated 19th June 2013 at 10:26 AM by dvb projekt

The Red Baron
V4.0



Click the image to open in full size.


The evolution brings the following changes

- Separate I2S-GND route to Digital-GND
- Separate Analog Output GND route
- Separate GND route for active divider decoupling caps to Analog-GND
- Modified active divider decoupling pads for better SMD 1210 caps soldering
- Onboard SOT353 footprint for fastest DEM-Synchronizer IC´s
- Un-interrupted ground plane
- MOSFET Source/Drain failure corrected


Still on the module

- Direct shunt voltage inputs with shortest onboard traces
- I2S In-/Outputs with shortest onboard traces
- I2S Attenuator and DEM Synchronizer
(by -ecdesigns-)
- Onboard Grounded-Gate MOSFET Current Buffer I/V Stage
(-ecdesigns- MK7 version)
- Separate GND-Trace for DEM-Synchroinizer
- Master/Slave
...
Attached Files
File Type: pdf Red Baron V4.0.pdf (593.7 KB, 409 views)
File Type: zip TDA1541A Project - BOM - for The Red Baron V4.zip (9.3 KB, 162 views)
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Rating: 2 votes, 4.00 average.

TDA1541A DAC Module V3.0 - Out of production

Posted 20th August 2011 at 08:32 AM by dvb projekt
Updated 19th June 2013 at 10:27 AM by dvb projekt

The Red Baron

aka TDA1541A DAC V3.0


Click the image to open in full size.


The evolution brings the following changes

- Direct shunt voltage inputs with shortest onboard traces
- I2S In-/Outputs with shortest onboard traces
- Upgrades DEM Synchronizer
- Onboard Grounded-Gate MOSFET Current Buffer I/V Stage
(-ecdesigns- MK7 version)
- Compacter design


Still on the module

- Separate GND-Trace for DEM-Synchroinizer
- Master/Slave connectors for parallel DAC module usage
and external I/V Buffer stages e.g.
Tube-I-zator & DDNF Stage
- Groundplane
- no SMD Design


Click the image to open in full size.


The PCB has the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 125x73 mm
...
Attached Files
File Type: zip TDA1541A Project - BOM - for The Red Baron.zip (9.0 KB, 759 views)
File Type: pdf The Red Baron DAC.pdf (28.9 KB, 1660 views)
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Old

Transformer for Pedja Rogic´s DDNF I/V Stage

Posted 23rd May 2011 at 10:44 AM by dvb projekt
Updated 14th June 2013 at 09:47 AM by dvb projekt

If you would build the DDNF I/V stage with my PSU & Salas Shunt modules,
you could order a custom made transformer at
AE-Europe.

It has the following data:

Primary:

115-0 / 115-0
(for 115V & 230V usage)

Secondary:

24V-0-24V / 2A
24V-0 / 2A
Magnetic Shield

You could order two versions:

- Standard: EI-core € 64,-

- High End: C-core (same size as 30317) € 112,-

Prices are excl. shipping and VAT
Delivery time around 6 weeks after order.


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Pedja Rogic´s Discrete Diamond Non-Feedback I/V Stage - Out of production

Posted 17th May 2011 at 04:15 PM by dvb projekt
Updated 14th June 2013 at 09:46 AM by dvb projekt

For all of you who want an alternative non-tube I/V stage,
Pedja Rogic was so kind and permit me to make a pcb with his circuit.

To get a smaller pcb, i made two connectors for the needed big 10µF caps.


Click the image to open in full size.


The PCB will have the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 110x95 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - green
Silkscreen: Legend on top

Out of production

Attached Files
File Type: pdf Pedja Rogic DDNF IV Stage.pdf (71.0 KB, 2805 views)
File Type: zip Pedja Rogic´s DDNF IV Stage BOM.zip (4.9 KB, 465 views)
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Tube-I-zator V2.0 Output Stage - Out of production

Posted 7th April 2011 at 01:14 PM by dvb projekt
Updated 14th June 2013 at 09:47 AM by dvb projekt

The Tube-I-zator V2.0

Click the image to open in full size.

The evolution brings the following changes:

- Heater Switch without any relays
- Low ESR Heater PSU (e.g. Panasonic FM)
- Star Grounding
- Mounting holes for the HV-Salas Shunt Module
- Compacter design





The PCB has the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 193x157 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - green
Silkscreen: Legend on top

Out of production
Attached Files
File Type: pdf Tube-I-zator V2.0.pdf (19.4 KB, 1125 views)
File Type: zip Tube-I-zator SSHV-Shunt BOM Final.zip (6.8 KB, 514 views)
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