Acko, a few more Qs...
# Is it possible/desirable to hotrod 2 of the 3,3V to 3,6V also on the A/D chip?
# Could you please say something about each of the power feeding wrt. to its load characteristics in terms of frequency distribution... I'll start below put please correct and make it complete...
- AVDD (1,2V): LF (< 192 khz)
- DVDD (1,2V):
- AVCC (3,3V):
- DVCC (3,3V):
- VOSC (3,V): HF (> 48Mhz, < 100Mhz)
Would these be the same as for AKD12?
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# Is it possible/desirable to hotrod 2 of the 3,3V to 3,6V also on the A/D chip?
# Could you please say something about each of the power feeding wrt. to its load characteristics in terms of frequency distribution... I'll start below put please correct and make it complete...
- AVDD (1,2V): LF (< 192 khz)
- DVDD (1,2V):
- AVCC (3,3V):
- DVCC (3,3V):
- VOSC (3,V): HF (> 48Mhz, < 100Mhz)
Would these be the same as for AKD12?
//
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AKR12 1.2V Reg
1.2V type with matching form factor and pinouts. -AKR12. Suits AVDD_L, AVDD_R and DVDD supplies (x3) of this ADC
Spreadsheet has been updated. Now with options for bare boards also. Offer limited to this GB only:
AKRxx GB
1.2V type with matching form factor and pinouts. -AKR12. Suits AVDD_L, AVDD_R and DVDD supplies (x3) of this ADC
Spreadsheet has been updated. Now with options for bare boards also. Offer limited to this GB only:
AKRxx GB
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Cbyp seem to have great impact on noise. Will the board have the possibility to accommodate say 470uF?
Which LDO are you using for the 1,2V version?
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Which LDO are you using for the 1,2V version?
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Caps are ceramic as per Analog Devices ref but there are provisions to mount Organic Polymer or Tantalum caps, smd 2917 size. Also, 1uf film caps in parallel for added benefit - makes it a little bulky though.
1.2V uses ADP151 but with options for other types for example LT1763,1963, LP5970 or similar.
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Nothing wrong electrically but you may want to use separate supplies for performance reasons.
Boards are ready for fab. GB is closed.
I will be requesting prepayments soon.
It will take about 4 wks to complete depending on your build options
Thank you for your support.
I've added myself to the AKR75 GB, but have not been following closely enough and unsure of what I need exactly.
Power Supplies
Recommended, all separate power supplies: 3.3V x 4 and 1.2V x 3 supplies as shown and these can be powered by a single Master PSU. AKR series regulators shown have very high PSSR and a simple unregulated master PSU will do. Other 3-term regulators (78xx pinouts) will also be suitable .e.g Hynes, Belleson etc,
Recommended, all separate power supplies: 3.3V x 4 and 1.2V x 3 supplies as shown and these can be powered by a single Master PSU. AKR series regulators shown have very high PSSR and a simple unregulated master PSU will do. Other 3-term regulators (78xx pinouts) will also be suitable .e.g Hynes, Belleson etc,
Attachments
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Output impedance
The effective output impedance will also depend on the load interaction and is usually not published by most manufacturers.
However, in consultation with Analog Devices (whose chips are used in the AKR series) and the load characteristics of the ADC module, the effective output impedance is <10mOhm from dc to 50MHz. Rest assured the ultra-low noise and dynamic performance makes them an excellent choice for this ADC project and even other similar applications
The effective output impedance will also depend on the load interaction and is usually not published by most manufacturers.
However, in consultation with Analog Devices (whose chips are used in the AKR series) and the load characteristics of the ADC module, the effective output impedance is <10mOhm from dc to 50MHz. Rest assured the ultra-low noise and dynamic performance makes them an excellent choice for this ADC project and even other similar applications
Not sure of a second GB but I have got some spares from the current batch. Please PM me.
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