AllSpiceMirrors/jellyfish-powersupply
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jellyfish-powersupply/hw/ads92x4.kicad_sch

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1 2 3 4 5 6 1 2 3 4 5 6 D C B A D C B A Date: 2024-04-10 Size: A4 Id: / File: blob_839b9e315b9a5f1b5d69d34e0b58780b628602da_2911646698.kicad_sch Sheet: / KiCad E.D.A. eeschema 8.0 SPDX-FileCopyrightText: 2024 Igor Brkic <igor@hyperglitch.com> SPDX-License-Identifier: CERN-OHL-S-2.0 Title: JellyfishOPP Rev: 1 HYPERGLITCH Ltd R155 4.32R R150 10.0R/0.05% C156 1uF C153 100nF R153 10.0R/0.05% C167 10nF C145 100pF R152 10.0R/0.05% C163 10uF R140 1.00k/0.05% C164 1uF C154 10nF C160 10uF R147 1.00k/0.05% C157 10nF C159 100nF C151 3300pF C161 1uF C166 100nF 3 2 1 D54 BAV199 C170 1uF C143 100pF R145 100R C147 330pF C171 1uF 3 2 1 D37 BAV199 C155 100nF C158 1uF R142 1.00k/0.05% C144 100pF R151 10.0R/0.05% R141 1.00k/0.05% R143 1.00k/0.05% R156 4.32R C141 100nF C149 330pF R154 4.32R C162 10nF C169 1uF R144 100R R146 1.00k/0.05% C142 100nF IN1- 1 VOCM1 17 OUT1+ 18 OUT1- 19 FB1+ 2 ~{PD1} 20 VS1- 21 FB1- 23 IN1+ 24 EP 25 VS1+ 3 U36A THS4552IRTWx C150 330pF VOCM2 11 OUT2+ 12 OUT2- 13 ~{PD2} 14 VS2- 15 FB2- 5 IN2+ 6 IN2- 7 FB2+ 8 VS2+ 9 U36B THS4552IRTWx R148 1.00k/0.05% AINP_A 1 REFP_B 10 AVDD 12 CONVST 13 ~{CS} 14 SDI 15 SCLK 16 SDO-7/3B 17 SDO-6/2B 18 SDO-5/1B 19 AINM_A 2 SDO-4/0B 20 SDO-3/3A 21 SDO-2/2A 22 SDO-1/1A 23 SDO-0/0A 24 READY/STROBE 25 ~{PD}/~{RST} 26 DVDD 28 REFby2 3 REFP_A 31 REFM_A 32 EP 33 GND 4 REFOUT 5 AINM_B 7 AINP_B 8 REFM_B 9 U37 ADS92x4R R149 1.00k/0.05% R157 4.32R C168 100nF C148 3300pF C146 100pF C165 10uF C152 330pF +5VA +5VA +5VA +3.3V +5VA +5VA +5VA +5VA +5VA REFP{slash}2 REFP{slash}2 REFP{slash}2 SDO-6 SCLK SDO-5 ADC_V- ADC_V- IN2- ADC_V- IN2+ REFP{slash}2 CONVST ADC_V- RDY{slash}STRB ~{PD}{slash}~{RST} IN1+ SDO-4 SDO-0 ADC_V- IN1- SDO-1 SDO-7 SDI SDO-3 SDO-2 ~{CS} ADC_V- ADC_V- filter resistors need to be <1% tolerance to keep the inputs balanced filter capacitors needs to be >320pF, C0G or NP0 (ADS92X4R datasheet 8.1.1.1) cap between pins 3 and 4 REFP decoupling caps: X7R, 10+V, 0603/0805 caps between pins 11 and 12 and between 29 and 30 caps between pins 27 and 28 2.048V (2.043-2.053) Connect near pins 21/22 and 15/16 of THS4552 IN- is connected to GND in all cases so there's no need for clamping diodes Connect near pins 3/4 and 9/10 of THS4552 Connect near the THS4552 cap between pins 5 and 4 FIXME: Filter cutoff is at 100kHz - adjust it properly after testing
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