ISD1750EY

Overview

The ISD1750EYI is a single-chip voice record and playback device from the ChipCorder series by Nuvoton Technology Corporation. It supports multiple messages with a duration of 33 to 100 seconds. The component operates on a supply voltage of 2.4 V to 5.5 V and features an internal oscillator. Input signals are analog single-ended or microphone, while output is analog single-ended PWM speaker output. Sampling frequency ranges from 4 kHz to 12 kHz. Interfaces include pushbutton and SPI. It is housed in a 28-TSOP package and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrated multi-message management system for self-managing address locations
• Non-volatile message storage using patented Multi-Level Storage (MLS) array
• On-chip microphone preamplifier with Automatic Gain Control (AGC)
• Pulse Width Modulation (PWM) Class D speaker driver with volume control

Applications

• Electronic systems requiring simple push-button voice messaging
• Microcontroller-based applications utilizing SPI interface
• Battery-powered devices due to low voltage operation capability
• Line-powered applications optimized for wide voltage ranges

Procurement Notes

Verify part status as obsolete before procurement planning. Confirm exact suffix requirements for temperature range and packaging. Check manufacturer recommended substitutes such as I2361YYI or I3800FYI for availability. Ensure design updates account for end-of-life notifications and potential supply chain constraints associated with discontinued components.

Selection Notes

Select based on required message duration between 33 and 100 seconds. Choose interface mode compatible with system architecture, either standalone pushbutton or SPI microcontroller control. Verify operating temperature range meets environmental specifications. Consider sampling frequency adjustments via external resistor if quality versus duration trade-offs are necessary for the specific application.

Part Context

This component belongs to the ISD1700 series of ChipCorder devices. These are fully integrated single-chip solutions designed for high-quality voice recording and playback. The series offers user-selectable message durations and sampling frequencies, providing flexibility for various electronic system integrations without requiring external memory or complex control logic.

Replacement Considerations

Manufacturer recommended substitutes include I2361YYI and I3800FYI. Verify pin compatibility and functional equivalence before substitution. Review datasheets for any differences in operating temperature or packaging dimensions.