ES8389-Hat
About the ES8389-Hat
ES8389-Hat is an open source PCB design by scrambletools, published on GitHub. It is a 4-layer board measuring 51.4 × 21.1 mm, with 79 components from 48 distinct parts.
Other key parts include the ES8389, TPS7A2033PDBVR, TLV9061IDBVR and 74HC4053PW. By type, the board carries 29 capacitors, 26 resistors, 7 connectors, 6 diodes, 4 ICs and 2 relays.
It belongs with the dev boards & breakouts and audio designs in this gallery.
From the project
Hat for Waveshare ESP32-P4-ETH and Raspberry Pi Pico
A compact 4-layer audio I/O HAT that stacks on a Waveshare ESP32-P4 carrier and gives it a studio-style balanced input and a headset/line output, bridged to the host over I²S (audio) and I²C (control). Its headline trick: it taps the carrier's 802.3 PoE rail to generate switchable ~48 V-class phantom power for condenser microphones — no separate supply.
- Balanced analog input — Neutrik XLR / ¼″ (6.35 mm) combo jack (J1) into the ES8389 ADC, with input coupling and ESD protection. - PoE-tapped phantom power — ~48 V phantom (tracks the 46–57 V PoE rail) through the standard 6.81 kΩ feed pair…
Main components on the ES8389-Hat
ES8389-Hat bill of materials (BOM)
79 components, 48 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ES8389 Everest Semi | ES8389_QFN24_P0.35mm | U1 |
| 1 | TPS7A2033PDBVR TPS7A2033 Texas Instruments | SOT-23-5 | U2 |
| 1 | TLV9061IDBVR TLV9061 Texas Instruments | SOT-23-5 | U3 |
| 1 | 74HC4053PW 74HC4053 Nexperia | TSSOP-16_4.4x5mm_P0.65mm | U4 |
| 1 | SI2325DS-T1-GE3 DMP3098 (P-FET 60V) Vishay | SOT-23 | Q1 |
| 1 | NCJ6FA-H Neutrik | Jack_XLR-6.35mm_Neutrik_NCJ6FA-H_Horizontal | J1 |
| 1 | SJ-3524-SMT TRRS PJ-3X4S (CTIA, bottom-side) CUI | Jack_3.5mm_CUI_SJ-3524-SMT_Horizontal | J2 |
| 1 | PM254V-11-07-H85 Carrier LEFT 1-7 XFCN | PinSocket_1x07_P2.54mm_Vertical | J3 |
| 1 | PM254V-11-07-H85 Carrier RIGHT 1-7 XFCN | PinSocket_1x07_P2.54mm_Vertical | J4 |
| 1 | PRPC002SAAN-RC VDD_PoE / PGND Sullins | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | B-2100S04P-A110 I2C 3V3/AGND/SDA/SCL Ckmtw | PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | PM254V-11-04-H85 TO EURORACK MODULE (alt. to J1) XFCN | PinSocket_1x04_P2.54mm_Vertical | J7 |
| 1 | 1812L010/60DR Polyfuse 50mA Littelfuse | Fuse_1812_4532Metric | F1 |
| 2 | KAQY214S Cosmo | SOP-4_3.8x4.1mm_P2.54mm | K1, K2 |
| 1 | C17549577 TLP291 Everlight | SOP-4_4.4x2.6mm_P1.27mm | OK1 |
| 1 | SS-12D00-G3 SOFNG | SW_Slide_SS-12D00-G3 | SW1 |
| 2 | PESD3V3L1BA-N PESD3V3L1BA (ESD) BORN | D_SOD-323 | D1, D2 |
| 1 | SMBJ58CA SMBJ58CA (TVS 58V) Littelfuse | D_SMA | D6 |
| 1 | MMSZ5242BT1G MMSZ4699 (Zener 12V) onsemi | D_SOD-123 | D7 |
| 1 | KT-0805W LED white 0805 Hubei KENTO | LED_0805_2012Metric | D8 |
Show 28 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPD1E10B06DPYR TPD1E10B06 (ESD) Texas Instruments | Texas_DPY0002A_0.6x1mm_P0.65mm | D9 |
| 1 | BLM18AG601SN1D 600R@100MHz Murata | L_0603_1608Metric | FB1 |
| 6 | CC0402KRX7R9BB104 100nF Yageo | C_0402_1005Metric | C1, C3, C4, C27, C28, C29 |
| 12 | CL05A105KA5NQNC 1uF Samsung | C_0402_1005Metric | C2, C5, C7, C8, C9, C12, C20, C21 +4 |
| 1 | GRM21BR61C106KE15L 10uF Murata | C_0805_2012Metric | C6 |
| 2 | CC0805KKX7R0BB105 1uF Yageo | C_0805_2012Metric | C10, C11 |
| 1 | CL05A105KA5NQNC 1uF (bias filter) Samsung | C_0402_1005Metric | C13 |
| 2 | CL21A226MPQNNNE 22uF Samsung | C_0805_2012Metric | C14, C15 |
| 1 | 0805B104K101NT 100nF/100V Fenghua | C_0805_2012Metric | C17 |
| 1 | CL31B105KCHNNNE 1uF/100V Samsung | C_1206_3216Metric | C18 |
| 1 | DE2E3SA222MA3BT02F 2.2nF Y2 (PGND-AGND) Murata | C_Y2_DE2B_TH | C19 |
| 1 | CL05A225KP5NSNC 2.2uF Samsung | C_0402_1005Metric | C22 |
| 1 | 0805B104K101NT 100nF 100V Fenghua | C_0805_2012Metric | C30 |
| 3 | RC0402FR-0710KL 10k Yageo | R_0402_1005Metric | R1, R2, R25 |
| 1 | RC0402FR-0710KL 10k (AD0 strap) Yageo | R_0402_1005Metric | R3 |
| 1 | RC0402FR-0710KL 10k (AD1 strap) Yageo | R_0402_1005Metric | R4 |
| 2 | ERJ6ENF6811V 6.81k 1% Panasonic | R_0805_2012Metric | R5, R6 |
| 1 | AC0402FR-072K2L 2.2k (mic bias) Yageo | R_0402_1005Metric | R7 |
| 3 | RC0402FR-0733RL 33R Yageo | R_0402_1005Metric | R9, R10, R24 |
| 5 | RC0402FR-07100KL 100k Yageo | R_0402_1005Metric | R11, R13, R19, R22, R23 |
| 1 | RC0402FR-071KL 1k Yageo | R_0402_1005Metric | R12 |
| 1 | RC0402JR-070RL 0R DNP (PGND lift) Yageo | R_0402_1005Metric | R14 |
| 1 | AC0805FR-7W15KL 15k Yageo | R_0805_2012Metric | R16 |
| 2 | RC0402FR-07470RL 470 Yageo | R_0402_1005Metric | R17, R18 |
| 1 | AC0402FR-072K2L 2.2k Yageo | R_0402_1005Metric | R20 |
| 2 | RC0402FR-071ML 1M Yageo | R_0402_1005Metric | R21, R26 |
| 1 | 0805W8F0000T5E R0 (force instrument mode) UNI-ROYAL | R_0805_2012Metric | R27 |
| 1 | 0805W8F0000T5E 0R (MCLK link) UNI-ROYAL | R_0805_2012Metric | R28 |
ES8389-Hat design files
The KiCad project lives in the scrambletools/ES8389-Hat repository on GitHub; these links point at the commit this page was built from.
- Layoutscramble_hat.kicad_pcb
- Schematicscramble_hat.kicad_sch
- BOMBOM.csv
ES8389-Hat: common questions
How big is the ES8389-Hat?
The ES8389-Hat measures 51.4 × 21.1 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the ES8389-Hat?
79 components, from 48 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the ES8389-Hat design files?
From the scrambletools/ES8389-Hat repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the ES8389-Hat design in my own project?
The repository has no license, so all rights stay with scrambletools. Use it as a reference, and ask the author before reusing the design.
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