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Product Detailed Parameters
- Description：IC VOICE REC/PLAY 100SEC 28SOIC
- Series：ChipCorder®
- Mfr：Nuvoton Technology Corporation
- Package：Tube
- Interface：Pushbutton, SPI
- Input Signal：Analog - Single Ended, Microphone
- Output Signal：Analog - Single Ended, PWM Speaker Output
- Sampling Frequency：4 ~ 12kHz
- Duration：33 ~ 100 Sec
- Filter Pass Band：-
- Messaging：Multiple
- Oscillator Type：Internal
- Features：Automatic Gain Control, Volume Control
- Operating Temperature：-40°C ~ 85°C (TA)
- Voltage - Supply：2.4 V ~ 5.5 V
- Mounting Type：Surface Mount
- Package / Case：28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：28-SOIC
- Grade：-
- Qualification：-
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Overview
The ISD1750SYI is a single-chip voice record and playback IC from Nuvoton's ChipCorder series, designed for standalone or microcontroller-controlled applications. It features non-volatile message storage using patented Multi-Level Storage (MLS) technology, allowing for multiple messages with durations ranging from 33 to 100 seconds. The device supports sampling frequencies between 4 kHz and 12 kHz, selectable via an external resistor. It operates on a supply voltage of 2.4 V to 5.5 V and includes an internal oscillator, microphone preamplifier with Automatic Gain Control (AGC), volume control, and a PWM Class D speaker driver. Communication interfaces include SPI and push-button controls, housed in a 28-SOIC package.
Feature Summary
- Patented Multi-Level Storage (MLS) provides non-volatile memory for multiple voice messages without power loss.
- Integrated analog front-end with microphone preamplifier featuring Automatic Gain Control (AGC) for consistent audio levels.
- Built-in Pulse Width Modulation (PWM) Class D amplifier capable of directly driving speakers or buzzers.
- Flexible operation modes supporting both standalone push-button control and SPI interface for microcontroller integration.
Applications
- Voice-enabled consumer electronics such as greeting cards and toys
- Industrial equipment status alerts and warning systems
- Automotive interior announcements and notification modules
- Smart home appliance voice prompts and feedback
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm package integrity upon receipt, as the 28-SOIC form factor requires careful handling during inspection. Cross-reference datasheet revisions to ensure compatibility with existing design specifications before procurement.
Selection Notes
Evaluate required message duration against the 33-100 second range provided by this specific model variant. Ensure system voltage requirements align with the 2.4 V to 5.5 V operating window. Consider whether SPI interface complexity is necessary or if standalone push-button operation suffices for the application design constraints.
Part Context
This component belongs to the Nuvoton ISD1700 ChipCorder series, which focuses on high-quality, fully integrated voice recording solutions. The series utilizes proprietary MLS technology to eliminate the need for external memory chips, simplifying PCB layout and reducing overall system cost compared to traditional digital voice recorder architectures.
Replacement Considerations
The ISD1750SYI is officially listed as obsolete. Verified manufacturer-recommended substitutes include I2361YYI and I3800FYI. These alternatives may offer updated manufacturing processes or slight parameter variations; verify pinout compatibility and electrical characteristics before implementation.
