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BD3702FV-E2
Public Made by Adomby adom
ROHM Semicon Audio Interface ICs, SSOP-28-208mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBD3702FV-E2
ROHM Semicon · Audio Interface ICs · SSOP-28-208mil
BD3702FV-E2 from ROHM Semicon, in a SSOP-28-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A1 | input | Selector 'A' single-ended audio input, channel 1 (left). Typical input impedance 100 kOhm; DC-blocking cap required. Selectable through the input selector matrix (see Table 1 modes). |
| 2 | A2 | input | Selector 'A' single-ended audio input, channel 2 (right). Rin(A,B,C) typ 100 kOhm. |
| 3 | B1 | input | Selector 'B' single-ended audio input, channel 1. Rin(A,B,C) typ 100 kOhm. |
| 4 | B2 | input | Selector 'B' single-ended audio input, channel 2. Rin(A,B,C) typ 100 kOhm. |
| 5 | C1 | input | Selector 'C' single-ended audio input, channel 1. Rin(A,B,C) typ 100 kOhm. |
| 6 | C2 | input | Selector 'C' single-ended audio input, channel 2. Rin(A,B,C) typ 100 kOhm. |
| 7 | DP1 | input | Selector 'D' differential positive input, channel 1. Ground-isolation amplifier front-end for external stereo input (Rin(D,E) typ 250 kOhm). |
| 8 | DN | input | Selector 'D' differential negative input (shared between D1 and D2 channels). Ground-reference / return for the D-selector isolation-amp inputs. |
| 9 | DP2 | input | Selector 'D' differential positive input, channel 2. Rin(D,E) typ 250 kOhm. |
| 10 | EP1 | input | Selector 'E' fully-differential positive input, channel 1. Rin(D,E) typ 250 kOhm. |
| 11 | EN1 | input | Selector 'E' fully-differential negative input, channel 1. Rin(D,E) typ 250 kOhm. |
| 12 | EN2 | input | Selector 'E' fully-differential negative input, channel 2. Rin(D,E) typ 250 kOhm. |
| 13 | EP2 | input | Selector 'E' fully-differential positive input, channel 2. Rin(D,E) typ 250 kOhm. |
| 14 | MIN | input | Monaural mixing input. Sums into the signal path with +7 dB to -79 dB (1 dB step) attenuation, or -infinity via I2C control. Input impedance typ 27 kOhm; max input 2.2 Vrms at THD+N=1%. |
| 15 | MUTE | input | External compulsory hardware mute input. Forces all outputs muted independent of I2C state (approx. -105 dB typ mute attenuation). |
| 16 | LRST | input | Level-meter reset input. Clears the peak-hold state of the internal I2C-readable level meter. |
| 17 | LOUT | output | Level-meter DC output. DC voltage proportional to input level (Vmax typ 3.1 V, offset typ 0 mV) for driving an external analog meter. |
| 18 | OUTS2 | output | Subwoofer output, channel 2. Rout typ 50 Ohm; Vom typ 2.2 Vrms at THD+N=1%. Fed from the LPF (fc 55/85/120 Hz) with 0/180 deg phase select. |
| 19 | OUTS1 | output | Subwoofer output, channel 1. Rout typ 50 Ohm; Vom typ 2.2 Vrms at THD+N=1%. |
| 20 | OUTR2 | output | Rear stereo output, channel 2. Post fader/EQ/loudness path; Rout typ 50 Ohm. |
| 21 | OUTR1 | output | Rear stereo output, channel 1. Post fader/EQ/loudness path; Rout typ 50 Ohm. |
| 22 | OUTF2 | output | Front stereo output, channel 2. Post fader/EQ/loudness path; Rout typ 50 Ohm. |
| 23 | OUTF1 | output | Front stereo output, channel 1. Post fader/EQ/loudness path; Rout typ 50 Ohm. |
| 24 | VCC | power_in | Analog power supply. Operating range 7.0-9.5 V (abs max 10.0 V). Iq typ 48 mA (no signal). Bypass to GND with a short-return decoupling capacitor. |
| 25 | SCL | input | I2C bus serial clock input. Compatible with 3.3 V or 5 V I2C logic levels. Requires external pull-up. |
| 26 | SDA | bidirectional | I2C bus serial data line. Compatible with 3.3 V or 5 V I2C logic. Open-drain; requires external pull-up. |
| 27 | GND | power_in | Analog / signal ground. Single-point connect all grounds here; keep decoupling loop short. |
| 28 | FIL | passive | VCC/2 mid-supply reference / filter pin. Connect an external bypass capacitor to GND to filter the internal VCC/2 bias used by the audio signal path. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SSOP-28-208mil |
| Category | Interface |
| Pins | 28 |
Ordering variants
Same part, different packaging or reel option.
BD3702FV-E2
CAD (KiCad official)
- Symbol:
BD3702FV-E2 - Footprint:
Package_SO:SSOP-28_5.3x10.2mm_P0.65mm - 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
- 3D model files:
bd3702fv-e2-etched.step/bd3702fv-e2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bd3702fv-e2.step/bd3702fv-e2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ROHM Semicon datasheet (36 pp, sha256
0e02483cd0911e8c, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).