component

BD37524FS-E2

Public Made by Adom

by adom

ROHM Semicon Audio Interface ICs, SSOP-24-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcommunication interface chip-uart-485-232bd37524fs-e2factory-2.0.0extractor-text

Verified BD37524FS-E2

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 24 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BD37524FS-E2 · SSOP-24-208mil · 24 pins
  • ✓copper: 24 copper pads, none touching another net
  • ✓datasheet: all 24 pin names found in the 34-page datasheet
  • ✓distributor: lcsc C2662556, digikey BD37524FS-E2-ND, mouser 755-BD37524FS-E2
  • ✓family: SSOP-24_5.3x8.2mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-kmqeyzc8/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 24 pins = 24 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 24 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bd37524fs-e2.kicad_sym✓ bd37524fs-e2.kicad_mod✓ bd37524fs-e2.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 19h ago
viewers bd37524fs-e2: viewers · Ray 19h ago
bd37524fs-e2-etched.glb Publish 0.1.0 · Ray 19h ago
bd37524fs-e2-etched.step bd37524fs-e2: factory component page (tier=mfr) · Ray 19h ago
bd37524fs-e2-hero.glb bd37524fs-e2: hero GLB from the etched model (keeps the MPN mark) · Ray 19h ago
bd37524fs-e2-hero.overlay.json Publish 0.1.0 · Ray 19h ago
bd37524fs-e2.glb Publish 0.1.0 · Ray 19h ago
bd37524fs-e2.kicad_mod Publish 0.1.0 · Ray 19h ago
bd37524fs-e2.kicad_sym Publish 0.1.0 · Ray 19h ago
bd37524fs-e2.lbr Publish 0.1.0 · Ray 19h ago
bd37524fs-e2.step Publish 0.1.0 · Ray 19h ago
package.json Publish 0.1.0 · Ray 19h ago
page.json Set visibility: public · Ray 19h ago
README.md Publish 0.1.0 · Ray 19h ago
verification.json Verified: Published by the parts factory: tier mfr, 24 pins · Ray 19h ago

BD37524FS-E2

ROHM Semicon · Audio Interface ICs · SSOP-24-208mil

BD37524FS-E2 from ROHM Semicon, in a SSOP-24-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 FIL passive Reference bias voltage node for the analog signal system (about 4.25 V); a simple precharge and discharge circuit for an external capacitor is built in.
2 A1 input Signal input terminal for input A, channel 1, with 100 kΩ (typ) input impedance.
3 A2 input Signal input terminal for input A, channel 2, with 100 kΩ (typ) input impedance.
4 B1 input Signal input terminal for input B, channel 1, with 100 kΩ (typ) input impedance.
5 B2 input Signal input terminal for input B, channel 2, with 100 kΩ (typ) input impedance.
6 CP1 input C positive signal input terminal for channel 1, with 250 kΩ (typ) input impedance.
7 CN input C negative signal input terminal, with 250 kΩ (typ) input impedance.
8 CP2 input C positive signal input terminal for channel 2, with 250 kΩ (typ) input impedance.
9 D1 input Signal input terminal for input D, channel 1, with 250 kΩ (typ) input impedance.
10 D2 input Signal input terminal for input D, channel 2, with 250 kΩ (typ) input impedance.
11 E1 input Signal input terminal for input E, channel 1, with 250 kΩ (typ) input impedance.
12 E2 input Signal input terminal for input E, channel 2, with 250 kΩ (typ) input impedance.
13 MUTE input External compulsory mute terminal: High level sets mute OFF and Low level sets mute ON; no voltage should be applied while the supply is off unless a series resistor of about 2.2 kΩ is used.
14 LOUT output Output terminal for the level meter.
15 OUTS2 output Subwoofer output terminal for channel 2 (fader and subwoofer output, about 4.25 V bias).
16 OUTS1 output Subwoofer output terminal for channel 1 (fader and subwoofer output, about 4.25 V bias).
17 OUTR2 output Rear output terminal for channel 2 (fader output, about 4.25 V bias).
18 OUTR1 output Rear output terminal for channel 1 (fader output, about 4.25 V bias).
19 OUTF2 output Front output terminal for channel 2 (fader output, about 4.25 V bias).
20 OUTF1 output Front output terminal for channel 1 (fader output, about 4.25 V bias).
21 VCC power_in Power supply terminal (7.0 V to 9.5 V supply range per the key specifications).
22 SCL input Clock input terminal for I2C BUS communication.
23 SDA bidirectional Data terminal for I2C BUS communication.
24 GND power_in Ground terminal.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package SSOP-24-208mil
Category Communication Interface Chip/UART/485/232
Pins 24

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power Supply Voltage (absolute maximum) VCC 10 V 4
Power Dissipation Pd 1 W Note 1: standard board 70x70x1.6mm; derate 8mW/°C above Ta=25°C 4
Storage Temperature Tstg -55 150 °C 4
Power Supply Voltage (recommended) VCC 7 9.5 V 4
Operating Temperature Topr -40 85 °C 4
Circuit Current (No Signal) IQ 38 48 mA No signal 4
Voltage Gain GV -1.5 0 1.5 dB GV=20log(VOUT/VIN) 4
Channel Balance CB -1.5 0 1.5 dB CB = GV1-GV2 4
Total Harmonic Distortion 1 (FRONT,REAR) THD+N1 0.001 0.05 ％ VOUT=1Vrms, BW=400Hz-30KHz 4
Total Harmonic Distortion 2 (SUBWOOFER) THD+N2 0.002 0.05 ％ VOUT=1Vrms, BW=400Hz-30KHz 4
Output Noise Voltage 1 (FRONT,REAR) VNO1 3.8 15 μVrms Rg = 0Ω, BW = IHF-A 4
Output Noise Voltage 2 (SUBWOOFER) VNO2 4.8 15 μVrms Rg = 0Ω, BW = IHF-A 4
Residual Output Noise Voltage VNOR 1.8 10 μVrms Fader = -∞dB, Rg = 0Ω, BW = IHF-A 4
Crosstalk Between Channels CTC -100 -90 dB Rg = 0Ω, CTC=20log(VOUT/VIN), BW = IHF-A 4
Ripple Rejection RR -70 -40 dB f=1KHz, VRR=100mVrms, RR=20log(VCC IN/VOUT) 4
Input Impedance (A, B) RIN_S 70 100 130 kΩ 4
Input Impedance (C,D,E) RIN_D 175 250 325 kΩ 4
Maximum Input Voltage VIM 2.1 2.3 Vrms VIM at THD+N(VOUT)=1％, BW=400Hz-30KHz 4
Crosstalk Between Selectors CTS -100 -90 dB Rg = 0Ω, CTS=20log(VOUT/VIN), BW = IHF-A 4
Common Mode Rejection Ratio CMRR 50 65 dB CP1 and CN input; CP2 and CN input; CMRR=20log(VIN/VOUT), BW = IHF-A 4
Minimum Input Gain GIN_MIN -2 0 2 dB Input gain 0dB, VIN=100mVrms, GIN=20log(VOUT/VIN) 4
Maximum Input Gain GIN_MAX 18 20 22 dB Input gain 20dB, VIN=100mVrms, GIN=20log(VOUT/VIN) 4
Gain Set Error GIN_ERR -2 0 2 dB GAIN=+20dB to +1dB 4
Mute Attenuation GMUTE -105 -85 dB Mute ON, GMUTE=20log(VOUT/VIN), BW = IHF-A 5
Maximum Gain GV_MAX 13 15 17 dB Volume = 15dB, VIN=100mVrms, GV=20log(VOUT/VIN) 5
Maximum Attenuation GV_MIN -100 -85 dB Volume = -∞dB, GV=20log(VOUT/VIN), BW = IHF-A 5
Attenuation Set Error 1 GV_ERR1 -2 0 2 dB GAIN & ATT=+15dB to -15dB 5
Attenuation Set Error 2 GV_ERR2 -3 0 3 dB ATT=-16dB to -47dB 5
Attenuation Set Error 3 GV_ERR3 -4 0 4 dB ATT=-48dB to -79dB 5
Bass Maximum Boost Gain GB_BST 18 20 22 dB Gain=+20dB, f=100Hz, VIN=100mVrms, GB=20log (VOUT/VIN) 5
Bass Maximum Cut Gain GB_CUT -22 -20 -18 dB Gain=-20dB, f=100Hz, VIN=2Vrms, GB=20log (VOUT/VIN) 5
Bass Gain Set Error GB_ERR -2 0 2 dB Gain=+20dB to -20dB, f=100Hz 5
Middle Maximum Boost Gain GM_BST 18 20 22 dB gain=+20dB, f=1KHz, VIN=100mVrms, GM=20log (VOUT/VIN) 5
Middle Maximum Cut Gain GM_CUT -22 -20 -18 dB Gain=-20dB, f=1KHz, VIN=2Vrms, GM=20log (VOUT/VIN) 5
Middle Gain Set Error GM_ERR -2 0 2 dB Gain=+20dB to -20dB, f=1KHz 5
Treble Maximum Boost Gain GT_BST 18 20 22 dB Gain=+20dB, f=10kHz, VIN=100mVrms, GT=20log (VOUT/VIN) 5
Treble Maximum Cut Gain GT_CUT -22 -20 -18 dB Gain=-20dB, f=10kHz, VIN=2Vrms, GT=20log (VOUT/VIN) 5
Treble Gain Set Error GT_ERR -2 0 2 dB Gain=+20dB to -20dB, f=10kHz 5
Fader Maximum Boost Gain GF_BST 13 15 17 dB Fader=15dB, VIN=100mVrms, GF=20log(VOUT/VIN) 5
Fader Maximum Attenuation GF_MIN -100 -90 dB Fader = -∞dB, GF=20log(VOUT/VIN), BW = IHF-A 5
Fader Gain Set Error GF_ERR -2 0 2 dB Gain=+15dB to +1dB 5
Fader Attenuation Set Error 1 GF_ERR1 -2 0 2 dB ATT=-1dB to -15dB 5
Fader Attenuation Set Error 2 GF_ERR2 -3 0 3 dB ATT=-16dB to -47dB 5
Fader Attenuation Set Error 3 GF_ERR3 -4 0 4 dB ATT=-48dB to -79dB 5
Output Impedance ROUT 50 Ω VIN =100mVrms 5
Maximum Output Voltage VOM 2 2.2 Vrms THD+N=1%, BW=400Hz-30KHz 5
Loudness Maximum Gain GL_MAX 17 20 23 dB Gain 20dB, VIN=100mVrms, GL=20log(VOUT/VIN) 5
Loudness Gain Set Error GL_ERR -2 0 2 dB GAIN=+20dB to +1dB 5
Level Meter Maximum Output Voltage VL_MAX 2.8 3.1 3.5 V 5
Level Meter Output Offset Voltage VL_OFF 0 100 mV 5
Low-level Input Voltage (I2C SDA/SCL) VIL -0.3 1 V 12
High-level Input Voltage (I2C SDA/SCL) VIH 2.3 5 V 12
Spike Pulse Width Suppressed by Input Filter tSP 0 50 ns 12
LOW level output voltage (I2C SDA) VOL1 0 0.4 V at 3mA sink current 12
Input current each I/O pin (I2C) II -10 10 μA input voltage between 0.4V and 4.5V 12
SCL clock frequency fSCL 0 400 kHz Fast-mode I2C-bus 12
Bus free time between STOP and START tBUF 1.3 μS 12
Data hold time tHD;DAT 0.06 μS (Note) internal hold of at least 300 ns on SDA, referred to VIH min of SCL 12
Data set-up time tSU;DAT 120 ns 12
Thermal resistance, junction to ambient θja 125 °C/W ROHM standard board 70x70x1.6mm, FR4, copper foil 3% or less 4

CAD (KiCad official)

  • Symbol: BD37524FS-E2
  • Footprint: Package_SO:SSOP-24_5.3x8.2mm_P0.65mm
  • 3D model: SSOP-24-208mil (KiCad packages3D, STEP)
  • 3D model files: bd37524fs-e2-etched.step / bd37524fs-e2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bd37524fs-e2.step / bd37524fs-e2.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: ROHM Semicon datasheet (34 pp, sha256 30b539a4e0ee229f, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF