BD37067FV-ME2 - 6-Ch Audio Processor | ROHM Semiconductor
MPN: BD37067FV-ME2 ✓ ActiveBD37067FV-ME2 Overview
A sound processor is an audio-specific signal-control IC that sits between source-selection circuitry and downstream audio conversion or amplification. It is part of the broader hierarchy of semiconductor devices for audio signal management, where input routing, level control, filtering, and digital conversion must operate together. The BD37067FV-ME2 is intended primarily for automotive audio systems, although its functional block set also suits compact audio equipment.
The defining feature is the integrated six-channel architecture. Instead of implementing every stereo-source input and volume path as discrete circuitry, the device provides a six-stereo-source selector and a six-channel volume circuit in one IC. The second-order post-filter reduces out-of-band noise after level adjustment, while the TDMA noise-reduction functions simplify implementation of noise control in suitable digital-audio systems.
Control is handled through an I2C bus, supporting integration with a host controller in vehicle audio, mini-component, and micro-component equipment. The manufacturer datasheet also identifies support for controlling a 5 V I2C-bus controller. This interface-oriented control method helps reduce external control lines and allows source, volume, and filter-related settings to be managed digitally by the surrounding system.
Typical deployments include factory-installed car-audio head units, navigation and communication audio systems, compact stereo equipment, and other multi-source audio products. Six-channel routing is particularly useful when several stereo sources must share a common set of downstream outputs while maintaining independent source selection and level control. The integrated post-filter also reduces the need for additional external filtering when out-of-band noise control is required.
PCB design should preserve short analog signal paths and maintain suitable ground distribution around the 40-pin SSOP-B device. Because the part coordinates input selection, filtering, ADC output, and volume control, verify the complete signal chain against the manufacturer application circuit before finalizing component values and layout. Confirm I2C addresses, control levels, external-component requirements, and decoupling directly from the manufacturer datasheet.
This product page consolidates the device function, verified operating details, application guidance, package constraints, and replacement limitations into an engineering-focused selection resource. It also distinguishes true pin-compatible substitution requirements from merely similar audio ICs, helping designers avoid adopting a component with a different package, pinout, or control architecture.
Drop-in alternatives for BD37067FV-ME2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
BD37067FV-M
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
BD37067FV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
BD37067FV-ME2 Maximum Ratings & Electrical Characteristics
| Device Type | Car-audio sound processor |
| Channel Count | 6 channels |
| Supply Voltage Range | 7 V to 9.5 V |
| Control Interface | I2C bus |
| Input Source Count | 6 stereo sources |
| Output Stage | ADC output after signal-level adjustment |
| Post-Filter | 2nd-order post-filter |
| Volume Circuit | 6-channel volume circuit |
| Noise Reduction | Built-in TDMA noise-reduction systems |
| I2C Controller Control | 5 V I2C-bus controller control |
| Operating Temperature Range | -40 °C to 85 °C |
| Package | 40-SSOP-B |
| Package Width | 5.40 mm |
| Pin Count | 40 pins |
| Mounting Type | Surface mount |
| Shipping Package | Reel (TR) |
| Automotive Qualification | AEC-Q100 series |
BD37067FV-ME2 reel (tr) Pin Configuration Guide
Pin configuration for BD37067FV-ME2 (reel (tr) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for BD37067FV-ME2.
Refer to the datasheet for full pin configuration.
Typical Applications
BD37067FV-ME2 is suitable for 6 applications: Automotive Audio Head Unit, Multi-Source Vehicle Navigation Audio, Compact Stereo Audio Equipment, Six-Channel Audio Mixing, Communication Audio Interface, Low-Noise Audio Preprocessing.
Automotive Audio Head Unit
The BD37067FV-ME2 fits a car-audio head unit that must select among six stereo sources while retaining coordinated volume control across six channels. Its input selector, signal-level adjustment, and ADC output form a practical front end for a digitally controlled vehicle audio system. The second-order post-filter helps reduce out-of-band noise, while I2C control allows a host controller to configure the processor. The 40-SSOP-B package and -40 °C to 85 °C stated operating range suit compact automotive electronics, subject to final AEC-Q100 qualification review.
Recommended
Multi-Source Vehicle Navigation Audio
A navigation head unit can use the BD37067FV-ME2 to combine radio, navigation prompts, external media, and other stereo sources before digital conversion. The six-stereo-source selector reduces the need for a bank of separate analog routing circuits, while the integrated six-channel volume block supports balanced left-right and front-rear level control. Its ADC output follows signal-level adjustment, and the second-order post-filter provides an additional noise-control stage in the signal path.
Recommended
Compact Stereo Audio Equipment
The BD37067FV-ME2 can support compact stereo products that accept several source inputs and require centralized digital level control. Integrating the selector, volume circuit, post-filter, and ADC output reduces external analog switching and filtering complexity in space-constrained equipment. The 40-SSOP-B package provides a high pin count without requiring a large-body package, while I2C permits a simple host-control architecture. The 7 V to 9.5 V supply requirement should be checked against the available internal rail.
Recommended
Six-Channel Audio Mixing
For a mixer or mini-component system, the BD37067FV-ME2 provides a six-channel volume circuit alongside selection of six stereo sources. This arrangement is useful when several inputs must feed a common output structure with coordinated attenuation and level adjustment. Signal conditioning can be followed by the built-in second-order post-filter and ADC output, simplifying the transition into a digital audio section. Designers should verify the exact channel mapping and supported control registers in the manufacturer datasheet before finalizing the signal architecture.
Recommended
Communication Audio Interface
The BD37067FV-ME2 can serve as the analog source-management element in a communication audio product that combines multiple stereo feeds. The six-source selector and adjustable signal path provide a consistent interface before ADC conversion, while digital control allows source changes to be coordinated with system operation. The integrated post-filter can reduce out-of-band content before downstream processing. Because the I2C register behavior and ADC characteristics determine implementation details, use the manufacturer application and pin descriptions for the final signal-path design.
Recommended
Low-Noise Audio Preprocessing
The BD37067FV-ME2 is appropriate when an audio subsystem needs source selection and level adjustment before conversion, followed by deliberate out-of-band noise reduction. Its second-order post-filter and TDMA noise-reduction support distinguish it from a basic switch or attenuator. Six-channel operation allows multiple analog paths to be handled coherently, and the ADC output provides a defined handoff to digital processing. Evaluate filter response, signal levels, and noise-reduction modes using the manufacturer reference design rather than relying on generic audio assumptions.
Recommended
Recommended Products Summary
Engineering reference data for BD37067FV-ME2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 40-SSOP-B |
| Brand | ROHM Semiconductor |
| Device Type | Car-audio sound processor |
| Channel Count | 6 channels |
| Supply Voltage Range | 7 V to 9.5 V |
| Control Interface | I2C bus |
| Input Sources | 6 stereo sources |
| Post-Filter | 2nd-order post-filter |
| Output Stage | ADC output after signal-level adjustment |
| Operating Temperature Range | -40 °C to 85 °C |
Key Differentiators
- Six-channel processing integration (vs BD37033FV-ME2)
- Integrated second-order post-filter (vs BD37033FV-ME2)
- Multi-source digital architecture (vs BD37033FV-ME2)
Design Notes
Place the supply-decoupling network and the manufacturer's recommended external components close to their associated pins, following the official application circuit. The SSOP-B footprint has fine-pitch leads, so verify land patterns, solder-mask clearance, and assembly capability before fabrication. Keep the 40-pin footprint and every terminal assignment fixed; related BD370xx devices may use different packages and cannot be substituted without a PCB change.
Route each stereo source with a short, symmetric path and maintain continuous ground return beneath the IC and analog signal section. Because the device combines source selection, level adjustment, filtering, and ADC output, long or uneven analog traces can introduce channel-to-channel timing and amplitude differences. Follow the manufacturer reference layout for sensitive nodes and place filtering components at the locations specified in the application diagram.
Operate the BD37067FV-ME2 only within the stated 7 V to 9.5 V supply range. Use the manufacturer-recommended bypass and filtering components to manage supply transients and noise entering the signal-processing blocks. For a 9.5 V rail, verify regulator tolerance, startup behavior, and transient margin rather than assuming that the nominal rail is always safe at its upper limit.
Do not treat a similar BD370xx part as a drop-in replacement merely because it is also described as an automotive audio processor. The BD37033FV-ME2, for example, is identified as a 28-pin SSOP-B device rather than the target's 40-pin SSOP-B package. Confirm pinout, supply range, channel count, source selector, filter response, ADC interface, I2C registers, and control voltage levels before approving any substitution.
Calculate actual device dissipation from the operating supply, current drawn by the application, and the internal circuit activity because a maximum output-current specification is not listed on this page. Use the manufacturer thermal information and PCB layout when estimating junction temperature. In a sealed automotive head unit, airflow may be minimal, making copper area, enclosure heat transfer, and placement away from heat-producing regulators important parts of the thermal strategy.
Compliance Information
The series is identified as automotive and AEC-Q100. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation from current manufacturer documentation.
