Page History

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On which board does the power connector (TFM) go and which type (TFM-112, TFM-115, etc)? (update Connectors section)
Does the digital board need the analog ground (AGND)? (see 100kfps DAQ support system)
Route +6V or +24V between analog and digital board?
- If +6V: All first-stage converters (LT8648S) must be on one the board with the input TFM connector
For the 0.6V sink:
- Is it really +0.6V and sinking current that is needed?
- Has this been done before?
- Special LDO config needed? (see design note from Analog)
- Precision Current Sources and Sinks Using Voltage References
Can the DC/DC architecture be simplified? Some ICs not in stock, see DC/DC converters
- Replace LMZ31530 (30A) with TPSM5D1806 in parallel mode (12A) since Vcc_int is estimated at 7A?
- Replace LT1764 with LT3083 for simpler paralleling circuitry (see power graph)
Are the ASIC digital supply (G_DS_X) and I/O supply (G_IO_X) shared among all four ASICs?
Do we have the CML current consumption numbers?
Request components for Altium library (see Altium Missing Components section)

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Component	Product number	Quantity	Input Voltage	Output Voltage	Max Current	Comment
DC/DC Step Down converter	LT8648S	4	3V to 42V	0.6V to 42V	15A
DC/DC PMIC	TPSM5D1806	7	4.5V to 15V	0.5V to 5.5V	Dual 6A / Single 12A
DC/DC Buck converter	LMZ31530	1	3V to 14.5V	0.6V to 3.6V	30A	Not in stock, replace with TPSM846C24? Other option is TPS53355 that is the IC used inside of LMZ31530.
Low Noise LDO	LT1764	8	2.7V to 20V	1.21V to 20V	3A	Low Output Noise: 40µVRMS (10Hz to 100kHz)
LDO alternative to LT1764	LT3083	8	1.2V to 23V	Adjustable to 0V	3A	Low Output Noise: 40μVRMS (10Hz to 100kHz)
Low Noise LDO	LT3086	12	1.4V to 40V	0.4V to 32V	2.1A	Low Output Noise: 40µVRMS (10Hz to 100kHz)
Negative Linear Regulator	LT3091	8	–1.5V to –36V	0V to –32V	-1.5A	Low Output Noise: 18µVRMS (10Hz to 100kHz)

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power-graph
Power Graph

Gliffy Diagram

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