SI8241CB-D-IS1 - Dual-Class-D Audio Gate Driver | Silicon Labs
部品番号: SI8241CB-D-IS1 ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.2818 | $3.28 |
| 10 | $11.18 | $111.80 |
| 100 | $1.6078 | $160.78 |
| 500 | $1.6078 | $803.90 |
| 1,000 | $1.6078 | $1,607.80 |
SI8241CB-D-IS1 概要
A Class-D gate driver is a type of power MOSFET driver that translates a low-voltage audio-control signal into complementary high-voltage gate-drive signals for an audio output half-bridge. It sits between the Class-D modulator or controller and the power transistors. In the system hierarchy, this component is a gate driver within a Class-D audio amplifier, rather than the audio DAC, power-conversion stage, or loudspeaker itself. Its purpose is to provide the required switching and timing control for the power MOSFETs that deliver audio energy to the load.
The verified data specifically establishes a two-channel configuration, 16-SOIC package, and -40 °C to +125 °C temperature range. Other information such as supply voltage, source and sink current, propagation delay, input thresholds, dead-time controls, and pin-level truth tables is not present in the supplied records and must be confirmed from the manufacturer datasheet before schematic design. Distributor metadata from DigiKey lists the device as “Audio Line Driver 2 Channel 16-SOIC,” which is consistent with a dual-channel gate-driver role.
The SI8241CB family is associated with precise dead-time adjustment and low total harmonic distortion in Class-D amplification. Those characteristics matter because incorrect MOSFET transition timing can create cross-conduction, excessive shoot-through current, or distorted output. The exact adjustment method, permitted dead-time range, and THD conditions are not supplied here, so they should not be inferred from the distributor snippets.
Potential uses include stereo Class-D audio amplifiers, powered speakers, sound bars, automotive audio systems, portable audio equipment, and other audio power stages where two half-bridges are driven from one controller. The wide verified temperature range makes the device relevant to industrial and automotive environments, but qualification status for a particular vehicle platform still requires separate documentation.
For PCB design, preserve the manufacturer-recommended input, output, supply, and ground connections exactly, and verify all 16 pin functions in the official datasheet before layout. Treat gate traces as high-current, high-dv/dt paths, minimize loop area around each MOSFET and driver, and validate dead time and thermal behavior in the final Class-D power stage.
This product record combines verified distributor availability, package and temperature information, source links, and engineering cautions where source data is missing. It is intended to help engineers identify the correct catalogued MPN while avoiding unsupported assumptions about electrical limits or compatibility.
ドロップイン代替品: SI8241CB-D-IS1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
SI8241CB-D-IS1R
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SI8241CB-D-IS1 最大定格＆電気的特性
| Device Type | Audio gate driver |
| Channel Count | 2 channels |
| Distributor Classification | Audio Line Driver |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | 125 °C |
| パッケージ | 16-SOIC |
| Package Width | 3.90 mm |
| Package Body Length | 0.154 inch |
| 実装タイプ | Surface mount |
| Power Stage Topology Supported | Class-D half-bridge |
| Dead-Time Adjustment | Precise dead-time adjustment supported by SI8241CB family |
| Audio Performance Feature | Designed for high-fidelity Class-D amplification |
SI8241CB-D-IS1 0.154 inch ピン配置ガイド
SI8241CB-D-IS1 (0.154 inch パッケージ) のピン配置。 このパワーデバイスは、ゲート、ドレイン、ソース端子を備えています。非極性パッケージの場合、正確なピン1の向きとフットプリントの詳細については、メーカーのデータシートを参照してください。主な用途には、電源設計、モータ駆動、負荷スイッチングがあります。
詳細なピン配置データはありません: SI8241CB-D-IS1.
詳細は データシート をご参照ください。
主な用途
SI8241CB-D-IS1 の用途: 6 件s: Stereo Class-D Audio Amplifier, Powered Speaker and Sound Bar, Automotive Audio Power Stage, Portable Audio Equipment, Industrial Audio Control Panel, High-Fidelity Headphone and Line-Driver Interface.
Stereo Class-D Audio Amplifier
The SI8241CB-D-IS1 fits a stereo Class-D output stage because the verified part is a two-channel 16-SOIC device. Each channel can drive the MOSFETs in one audio half-bridge, reducing the number of separate driver packages required when the controller supplies compatible control signals. The device is associated with precise dead-time adjustment, which is important for controlling shoot-through and distortion during MOSFET transitions. Before layout, verify the actual pin assignments, supply limits, drive-current capability, timing limits, and dead-time configuration in the manufacturer datasheet.
おすすめ
Powered Speaker and Sound Bar
A powered speaker or sound bar can use SI8241CB-D-IS1 to translate controller signals into MOSFET gate drives for two audio output channels. The verified -40 °C to +125 °C operating range is useful for equipment exposed to variable enclosure temperatures, although the complete electrical limits remain to be confirmed. Place the driver near the power MOSFETs, keep gate loops compact, and isolate switching current from the audio input and analog sections to reduce noise and EMI pickup.
おすすめ
Automotive Audio Power Stage
SI8241CB-D-IS1 can be evaluated for automotive audio power stages because its verified maximum operating temperature is +125 °C and its family is intended for Class-D gate driving. The device should not be treated as automatically automotive-qualified: the supplied records do not state AEC-Q100 status, qualification grade, or production qualification. Confirm those requirements, transient immunity, supply behavior, and environmental qualification with the manufacturer before using it in a vehicle.
おすすめ
Portable Audio Equipment
The dual-channel format can simplify a portable speaker design by consolidating two audio half-bridge drive functions into one 16-SOIC package. The available data does not specify supply voltage, quiescent current, or drive current, so battery-life and thermal claims cannot be made from this record. Engineers should verify the minimum operating voltage, quiescent consumption, shutdown behavior, and peak current requirements against the official datasheet before selecting the driver.
おすすめ
Industrial Audio Control Panel
SI8241CB-D-IS1 may be suitable for an industrial audio amplifier or announcement system that requires two driven audio channels and operation across a broad temperature range. The verified -40 °C to +125 °C rating supports preliminary environmental screening, but enclosure temperature, vibration, surge, and EMC requirements must be evaluated separately. Use careful grounding and short gate-drive loops, and confirm that the final MOSFETs and power supply remain within the driver’s verified limits.
おすすめ
High-Fidelity Headphone and Line-Driver Interface
The SI8241CB family is described as supporting high-fidelity Class-D amplification, and the target’s two-channel architecture can be useful when the final power stage needs balanced gate-drive timing. It is not, however, a conventional headphone line-output IC based on the verified data. Use it when the design specifically requires MOSFET half-bridge gate control. Confirm input logic, propagation delay, dead-time behavior, and output drive specifications before assigning analog signal-chain roles.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: SI8241CB-D-IS1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | SI8241CB-D-IS1R |
|---|---|---|
| Brand | Silicon Labs | Silicon Labs |
| Package | 16-SOIC | 16-SOIC |
| Device Classification | Audio gate driver / audio line driver | Audio line driver listing |
| Surface Mount | Yes, 16-SOIC | Yes, 16-SOIC listing |
主な差別化要因
- Dual-channel integration （vs Single-channel audio gate-driver options)
- Wide verified temperature range （vs Parts with narrower commercial temperature ratings)
- Class-D-specific family positioning （vs Generic line drivers)
- Known package outline （vs Unknown-package alternatives)
設計ノート
Place SI8241CB-D-IS1 close to the MOSFETs it drives. Keep each gate-drive loop short, minimize the high-current return path, and provide a continuous ground reference. Gate traces should not run beneath sensitive audio inputs or analog returns; otherwise switching transients can couple into the audio signal chain. Exact trace geometry must follow the official datasheet and the selected MOSFET layout.
Do not substitute SI8241CB-D-IS1 based only on the 16-SOIC package and two-channel description. Verify every pin, supply range, input threshold, propagation delay, output current, and dead-time setting in the manufacturer datasheet. The verified source set does not contain a complete electrical table or pinout, so schematic completion from snippets alone is unsafe.
The driver’s operating-temperature range is verified as -40 °C to +125 °C, but that rating does not establish allowable power dissipation or junction temperature for a particular board. Estimate gate-drive dissipation from the actual supply voltage, switching frequency, gate charge, and number of transitions, then check the driver and MOSFET thermal design against the final enclosure temperature. Add copper and thermal relief only after consulting the package-specific guidance.
Class-D gate-drive edges are high dv/dt signals and can create EMI even when audio output distortion is acceptable. Use the shortest practical gate paths, maintain a tight output-current loop, and keep the driver supply decoupling close to the device. Validate conducted and radiated emissions in the finished enclosure with the actual MOSFETs, layout, cable, and speaker load.
Dead-time affects both switching loss and distortion. Preserve the manufacturer-supported timing range, avoid adding excessive gate resistance without revalidating rise and fall times, and test both low-load and rated-load behavior. Because the verified record mentions precise dead-time adjustment but does not provide its range or control implementation, obtain the official timing data before selecting external components.
コンプライアンス情報
The supplied distributor and search-result data do not provide verified RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification statements. AEC-Q100 is marked not_applicable only because the records do not identify this part as an automotive-qualified product; this is not an assertion that automotive use is impossible.
