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Joachim Gerhard Filter Buffer for ES9022

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#103
People sent me PMs asking for BoM.

Since the two most critical passives are know, we'll publish the rest so that you can also organise GBs if you wish :

BoM for one PCB

4x 10R 0.5% SMD 0805 Digikey RR12Q10DCT-ND
6x 100R 0.5% SMD 0603 Digikey RR08P100DCT-ND
2x 0R SMD 0603 Digikey P0.0GCT-ND
2x 10k 0.5% SMD 0603 Digikey RR08P10.0KDCT-ND
2x 470R 0.5% SMD 0805 Digikey RR12P470DCT-ND

4x 220µF 25V Digikey P10271-ND
2x 150pF 16V PPS SMD 0603 Digikey PCF1461CT-ND

2x 18mH 5%, matched to 1% Mouser 434-02-183J


Patrick
 
#104
I wonder if it would be possible to get those parts from mouser? I could probably do a parts kit when I'm doing the inductors anyway?


I'll have to buy my own anyway...


Whenever you close this GB, I'll leave the inductor GB open a week longer to catch any stragglers.


Fran
 
#107
Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA
hochopeper 1x Australia
palmito 1x USA
cyteen 1x UK
vitalica 2 x EU
ryanj 1 x Australia
Cloud85 2x singapore
APK 4 x UK
CeeVee 2 X Portugal
woodturner-fran 2x EU
diy_calderon 1x USA
ginum 2x EU
JBdV 2X EU
aud1out 1x canada
tome 1x Europe (Macedonia)
schuhbu 2x EU
vanofmonks 1x USA
audionootje 1x EU
Reima 2x USA
CFT 1x HK
Lutto 4x EU
korben69 1x EU
whmok 2x Singapore
jacek_k_wawa 2x EU
grufti 2x USA
dw1narso 2x Indonesia

I'm in.... Patrick...

I've been quite long do not check DIYAudio forum..., is there still the group buy run for your ES9022 DAC? Also, would it be good if I bypass the SPDI/F receiver and feed in I2S directly from async USB-I2S converter, or do you still recommend to use the 8804 receiver first?
 
#109
Just amended my order

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA
hochopeper 1x Australia
palmito 1x USA
cyteen 1x UK
vitalica 2 x EU
ryanj 1 x Australia
Cloud85 2x singapore
APK 8 x UK
CeeVee 2 X Portugal
woodturner-fran 2x EU
diy_calderon 1x USA
ginum 2x EU
JBdV 2X EU
aud1out 1x canada
tome 1x Europe (Macedonia)
schuhbu 2x EU
vanofmonks 1x USA
audionootje 1x EU
Reima 2x USA
CFT 1x HK
Lutto 4x EU
korben69 1x EU
whmok 2x Singapore
jacek_k_wawa 2x EU
grufti 2x USA
dw1narso 2x Indonesia
 
#111
Approximate parts cost for the BOM above for 1 board (incl inductors) works out ~€6 or so. So I still need to check to see if that is incl or excl VAT (sales tax) and customs etc etc. But suffice to say the parts for 1 stereo board ain't gonna cost that much. I also need to estimate postage costs from me back out to the various countries with/without tracking. Based on past experience I'd image we are looking at ~€12-13 for the full kit for one stereo board minus tracking which usually adds €3-4.
 
#114
Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 1x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA
hochopeper 1x Australia
palmito 1x USA
cyteen 1x UK
vitalica 2 x EU
ryanj 1 x Australia
Cloud85 2x singapore
APK 8 x UK
CeeVee 2 X Portugal
woodturner-fran 2x EU
diy_calderon 1x USA
ginum 2x EU
JBdV 2X EU
aud1out 1x canada
tome 1x Europe (Macedonia)
schuhbu 2x EU
vanofmonks 1x USA
audionootje 1x EU
Reima 2x USA
CFT 1x HK
Lutto 4x EU
korben69 1x EU
whmok 2x Singapore
jacek_k_wawa 2x EU
grufti 2x USA
dw1narso 2x Indonesia
linuxfan 2x Australia

Running total 80

Thanks
 
#115
Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
touchdown 1 x EU (Italia)
guglielmope 1 x EU (Italia)
SYKLAB 1x HK
pchw 2x USA
Acko 2x Australia
Dane 2x USA
GaryB 1x USA
shoom 1x EU-UK
Jolojl 1x EU-SWE
jonners 1X EU
ccliu 2x TW
jj506 4x TW
necplusultra 2x canada
leejh 3x KOR
steve jones 1x USA
Greg Stewart 1x USA
hochopeper 1x Australia
palmito 1x USA
cyteen 1x UK
vitalica 2 x EU
ryanj 1 x Australia
Cloud85 2x singapore
APK 8 x UK
CeeVee 2 X Portugal
woodturner-fran 2x EU
diy_calderon 1x USA
ginum 2x EU
JBdV 2X EU
aud1out 1x canada
tome 1x Europe (Macedonia)
schuhbu 2x EU
vanofmonks 1x USA
audionootje 1x EU
Reima 2x USA
CFT 1x HK
Lutto 4x EU
korben69 1x EU
whmok 2x Singapore
jacek_k_wawa 2x EU
grufti 2x USA
dw1narso 2x Indonesia
linuxfan 2x Australia

Running total 81

Thanks
 
#118
> Question, is this buffer compatible and useful for the JP/Subbu ES9023+WM8804 DAC

Jean Paul was the third on top of the subscribers list ??
You should ask him.

> what is the current demand for the filter and what would you suggest for a PSU for it?

About +/-9V, 24~32mA, depending on the Idss of the JFETs, for stereo.

> Batteries or shunt, or is the PS not so critical?

If you ask me, of course batteries. 🙂


Patrick
 
#119
EUVL said:
> Question, is this buffer compatible and useful for the JP/Subbu ES9023+WM8804 DAC

Jean Paul was the third on top of the subscribers list ??
You should ask him.

> what is the current demand for the filter and what would you suggest for a PSU for it?

About +/-9V, 24~32mA, depending on the Idss of the JFETs, for stereo.

> Batteries or shunt, or is the PS not so critical?

If you ask me, of course batteries. 🙂


Patrick
Click to expand...

Hi Patrick,

I thought Joachim's schematic had +/- 15V?

Regards
 
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