For Analog Audio Processors, How should unused inp

For Analog Audio processors, How should unused input signal pins be handled in a product that operates with One or Two positive power Supplies?
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Since the voltage at the input terminal is a Bias Voltage, it is recommended to connect it to GND via a coupling capacitor.
It is also possible to leave open the unused input signal pins, but External noise, crosstalk, etc. are more likely to occur.

创建于2024-08-25

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For Analog Audio Processors, How should unused signal input pins be handled for products that operate with Positive and Negative Power Supplies?

It can be connected to GND directly without a Coupling Capacitor. If a small current due to offset is a concern, connect it to GND via a Coupling Capacitor.

2024-08-30 - 技术问答代理服务技术支持采购服务

For Analog Audio Processors, How should unused output pins be handled?

Unused output pins can be left OPEN.

2024-08-30 - 技术问答代理服务技术支持采购服务

For Analog Audio Processors, For products with VOL and FADER, how can I use them to reduce output noise?

To reduce the output noise level, decrease the gain of the FADER in the second stage instead of the VOL in the first stage.

2024-08-30 - 技术问答代理服务技术支持采购服务

For Analog Audio Processors, What type of product is Hi-VOL type?

Typical output of analog audio processors is about 2Vrms. Hi-VOL type can output 3 to 5Vrms.

2024-08-30 - 技术问答代理服务技术支持采购服务

For Analog Audio Processors, Why is the noise level higher when EQ is on than when EQ is off?

When the EQ is off, the signal does not pass through the equalizer circuit.

2024-08-30 - 技术问答代理服务技术支持采购服务

12V输入，给3节锂电池（12.6V）充电的充电管理芯片有吗？电流2A即可。

推荐ROHM品牌的锂电池充电管理芯片：BD99954MWV，支持最多4节锂电池串联充电方式，产品带通讯接口。详细参数看如下链接 1 to 4-Cell Li-Ion Battery Manager For Application Processors BD99954MWV, BD99954GW数据手册

2020-05-26 - 技术问答代理服务技术支持采购服务

ROHM（罗姆）工业设备用产品选型指南（英文）

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10.2018 - 选型指南 - Ver.2.0 代理服务技术支持采购服务

For Analog Audio Processors, Some products have an input selector with an Input Short setting. When is this setting used?

Using this mode at startup reduces the time required to charge the coupling capacitors connected to the input terminals to the bias voltage.

2024-08-30 - 技术问答代理服务技术支持采购服务

ROHM IGBT产品

ROHM公司提供全面的功率器件产品线，包括硅基和碳化硅(SiC)器件。产品涵盖功率器件、模块、IC和智能功率模块。主要产品包括SiC二极管、MOSFET、IGBT、混合MOS、超结MOSFET、FRD、肖特基二极管、分流电阻IC、栅极驱动器和温度/高压监控器。资料中详细介绍了ROHM的IGBT产品路线图、封装路线图、产能计划和产品推荐。

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商品及供应商介绍代理服务技术支持采购服务

ROHM’s Product Longevity Program Enables Worry-free Adoption of ROHM Products

ROHM is working on a Product Longevity Program to eliminate these customer concerns, burdens, and risks as much as possible, allowing customers to select products with confidence.

2024-05-01 - 原厂动态代理服务技术支持采购服务

For Analog Audio Processors, For a product that operates with One or Two Positive Power Supplies, can unused input signal terminals be grouped together with a single Coupling Capacitor?

Although it is possible to connect them together, please note the following points: ・Unexpected DC current may flow between unused terminals. ・Since the cutoff frequency is determined by the input impedance and the capacitance value of the coupling capacitor, connecting unused terminals together to a single coupling capacitor will increase the cutoff frequency and may reduce the noise rejection effect. ・If noise from unused pins is a problem, increase the capacitance value of the Coupling Capacitor connected to GND to reduce the noise from the unused pins.

2024-08-30 - 技术问答代理服务技术支持采购服务

车规级BLDC驱动芯片有在开发吗？预计什么时间能上市？

ROHM的这几个三相BLDC驱动芯片 BD63035EFV-ME2: https://www.sekorm.com/product/53020.htmlBD63030EKV-CE2:https://www.sekorm.com/product/54686.html BD16805FV-ME2:https://www.sekorm.com/product/48278.html 以及MELEXIS的MLX81206LLQ-AMA-001-SP :https://www.sekorm.com/product/148774.html 都是汽车级的的驱动芯片，都有库存，可以评估一下，具体要看是多大功率的BLDC.

2021-01-29 - 技术问答代理服务技术支持采购服务

Team Starcraft Use SiC-MOSFETs, Corresponding Gate Drivers and Other Products of ROHM‘s Portfolio to Develop the Inverter

Since 2018, ROHM Semiconductor has been one of them. The students can use the latest generation of SiC-MOSFETs, the corresponding gate drivers and other products of ROHM‘s portfolio for the inverter as well as for other electrical systems.

2021-12-07 - 原厂动态代理服务技术支持采购服务

For Analog Audio Processors, For a product that operates with One or Two Positive Power Supplies, is accurate capacitance value required for the Coupling Capacitor of unused input signal terminals?

Accurate capacitance value is not required, but since the HPF is formed by the Coupling Capacitor and the internal input Resistor, the noise frequency bandwidth that can be filtered varies depending on the capacitance value to be connected.

2024-08-30 - 技术问答代理服务技术支持采购服务