HT8955A
Audio Control IC, CMOS, PDIP24HT8955A
Audio Control IC, CMOS, PDIP24
Quality Assurance
Quality Assurance
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Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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Example
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Tape and Reel
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HT8955A DataSheet
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Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
General Description The HT8955A is a CMOS LSI digital audio signal delay processor. It is designed for audio system applications including echo generators, karaoke systems, sound effect generators, etc.Features • Operating voltage: 5.0V • Long delay time – 0.8 seconds (SEL=VSS, 256K DRAM) – 0.2 seconds (SEL=VDD/open, 64K DRAM) • 25kHz sampling rate • Continuous variable delay time • Built-in pre-amplifier • Low distortion • High S/N ratio • Wide frequency response • PCM 10-bit A/D and D/A converters • 24-pin DIP packageApplications • Mixers • Karaoke systems • Echo generators • Sound effect generators
Key Features
- Operating voltage: 5.0V
- Long delay time
- – 0.8 seconds (SEL=VSS, 256K DRAM)
- – 0.2 seconds (SEL=VDD/open, 64K DRAM)
- 25kHz sampling rate
- Continuous variable delay time
- Built-in pre-amplifier
- Low distortion
- High S/N ratio
- Wide frequency response
- PCM 10-bit A/D and D/A converters
- 24-pin DIP package
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Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Rohs Code | No | Part Life Cycle Code | Obsolete |
Reach Compliance Code | ECCN Code | EAR99 | |
HTS Code ! | 8542.39.00.01 | JESD-30 Code | R-PDIP-T24 |
JESD-609 Code | e0 | Number of Terminals | 24 |
Operating Temperature-Max | 70 °C | Operating Temperature-Min | -20 °C |
Package Body Material | PLASTIC/EPOXY | Package Code | DIP |
Package Equivalence Code | DIP24,.6 | Package Shape | RECTANGULAR |
Package Style | IN-LINE | Power Supplies ! | 5 V |
Qualification Status ! | Not Qualified | Supply Current-Max | 8 mA |
Surface Mount ! | NO | Technology | CMOS |
Temperature Grade ! | COMMERCIAL | Terminal Finish | Tin/Lead (Sn/Pb) |
Terminal Form ! | THROUGH-HOLE | Terminal Pitch ! | 2.54 mm |
Terminal Position | DUAL |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is HT8955A?
The HT8955A is a voice echo IC (Integrated Circuit) designed by Holtek Semiconductor. It is commonly used in voice-changing and audio effects applications, such as karaoke machines, toys, and novelty gadgets.
How Does HT8955A Work?
The HT8955A works by processing audio input signals to generate echo effects and voice modulation. It features adjustable parameters for echo delay, feedback, and voice pitch modification, allowing users to customize the audio effects according to their preferences. The IC also includes built-in analog and digital signal processing functions for easy integration into audio systems.
How Many Pins does HT8955A have and What are the Functions of the Pinout Configuration?
The HT8955A is housed in a 16-pin SOP (Small Outline Package) package. The pinout configuration includes:
- VDD, VSS: Power supply pins.
- ADCIN, DACOUT: Analog audio input and output pins.
- INL, INR, OUTL, OUTR: Left and right channel audio input and output pins.
- MIC1, MIC2: Microphone input pins for voice modulation.
- SEL0, SEL1, SEL2: Selection pins for setting operation modes and parameters.
- SDA, SCL: I2C serial interface pins for control and configuration.
What are the Pros and Cons of HT8955A?
Pros:
- Versatile Application: Suitable for various audio effects and voice modulation applications.
- Adjustable Parameters: Allows customization of echo effects, feedback levels, and voice pitch.
- Built-in Signal Processing: Integrated analog and digital signal processing functions for simplified system design.
- Cost-Effective Solution: Provides audio effects processing in a single IC, reducing external component costs.
Cons:
- Complex Programming: Setting up and configuring the IC for specific effects may require programming expertise.
- Limited Features: May not offer advanced audio processing capabilities compared to dedicated DSP chips.
- System Integration: Requires accurate PCB layout and system integration for optimal performance.
Are There Any Equivalents/Alternatives to HT8955A for Recommendation?
- The PT2399 from Princeton Technology Corporation is a similar audio effects IC commonly used for echo and delay effects.
- Alternatives to the HT8955A include the ISD2590 from Nuvoton Technology and the XR2206 from Exar Corporation.