ISD5216SY Voice Record/Playback IC Equivalent & Substitute Parts

Part Overview

The ISD5216SY is a ChipCorder® voice record/playback interface IC manufactured by Nuvoton Technology Corporation, designed for multiple message applications with recording and playback durations of 8 minutes 3 seconds to 16 minutes 6 seconds. The device features I2C interface control, analog single-ended and I2S signal processing, and integrated automatic gain control with volume management.

The ISD5216SY is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support long-term product support for applications currently utilizing this interface IC.

Key Parameters

Parameter	ISD5216SY Value
Interface	I2C
Input Signal	Analog - Single Ended, I2S, Microphone
Output Signal	Analog - Single Ended, I2S, PWM Speaker Output
Sampling Frequency	4 ~ 8 kHz
Recording/Playback Duration	8 Min 3 Sec ~ 16 Min 6 Sec
Filter Pass Band	1.8 ~ 3.7 kHz
Messaging	Multiple
Oscillator Type	Internal/External
Features	Auto Mute, Automatic Gain Control, Volume Control
Operating Temperature	0°C ~ 70°C (TA)
Voltage - Supply	2.7 V ~ 3.3 V
Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the ISD5216SY is determined by strict alignment of the following critical parameters:

Interface compatibility: Both main and substitute parts must support I2C control protocol.

Signal processing: Input and output signal types must accommodate the application's analog microphone input and speaker output requirements.

Sampling frequency range: Operating range of 4 ~ 8 kHz must be maintained for audio quality consistency.

Package and form factor: 28-SOIC surface mount package ensures mechanical and electrical compatibility with existing PCB layouts.

Supply voltage: 2.7 V ~ 3.3 V operating range must be preserved for power supply compatibility.

Messaging capability: Multiple message support must be retained for multi-message applications.

The ISD5116SY meets these substitution criteria as a manufacturer-recommended equivalent part within the ChipCorder® series.

Parameter Comparison

Parameter	ISD5216SY	ISD5116SY
Manufacturer	Nuvoton Technology Corporation	Nuvoton Technology Corporation
Series	ChipCorder®	ChipCorder®
Interface	I2C	I2C
Input Signal	Analog - Single Ended, I2S, Microphone	Analog - Single Ended, Microphone
Output Signal	Analog - Single Ended, I2S, PWM Speaker Output	Analog - Single Ended, Analog Differential, PWM Speaker Output
Sampling Frequency	4 ~ 8 kHz	4 ~ 8 kHz
Recording/Playback Duration	8 Min 3 Sec ~ 16 Min 6 Sec	8 Min 44 Sec ~ 17 Min 28 Sec
Filter Pass Band	1.8 ~ 3.7 kHz	1.7 ~ 3.4 kHz
Messaging	Multiple	Multiple
Oscillator Type	Internal/External	Internal/External
Features	Auto Mute, Automatic Gain Control, Volume Control	Auto Mute, Automatic Gain Control, Digital Data Storage, Volume Control
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Voltage - Supply	2.7 V ~ 3.3 V	2.7 V ~ 3.3 V
Mounting Type	Surface Mount	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
RoHS Status	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

The ISD5116SY is the manufacturer-recommended substitute for the obsolete ISD5216SY. Both devices share identical I2C interface protocol, supply voltage range (2.7 V ~ 3.3 V), sampling frequency (4 ~ 8 kHz), and 28-SOIC package specifications, ensuring direct compatibility with existing circuit designs.

The ISD5116SY maintains active product status with ROHS3 compliance certification, providing long-term availability and regulatory alignment for new designs and production continuity. The extended recording/playback duration (8 minutes 44 seconds to 17 minutes 28 seconds) and additional digital data storage feature represent functional enhancements over the ISD5216SY.

Signal processing differences are minimal: the ISD5116SY omits I2S input support but adds analog differential output capability, while maintaining single-ended analog input/output compatibility. Filter pass band specifications remain within comparable ranges (1.7 ~ 3.4 kHz versus 1.8 ~ 3.7 kHz).

Frequently Asked Questions (FAQ)

Q: Can the ISD5116SY directly replace the ISD5216SY in existing designs?

A: Yes. Both devices share identical I2C interface protocol, 28-SOIC package dimensions, supply voltage range (2.7 V ~ 3.3 V), and sampling frequency specifications (4 ~ 8 kHz). No PCB layout modifications are required.

Q: What are the key differences between ISD5216SY and ISD5116SY?

A: The ISD5116SY provides extended recording/playback duration (17 minutes 28 seconds maximum versus 16 minutes 6 seconds), adds digital data storage capability, and includes analog differential output support. The ISD5116SY does not support I2S input, though single-ended analog microphone input remains compatible. The ISD5116SY is active product status with ROHS3 compliance.

Q: Are the filter pass band specifications compatible?

A: Yes. The ISD5116SY filter pass band (1.7 ~ 3.4 kHz) overlaps substantially with the ISD5216SY specification (1.8 ~ 3.7 kHz), maintaining audio frequency response compatibility for voice record/playback applications.

Q: Does the ISD5116SY support multiple message functionality?

A: Yes. Both the ISD5216SY and ISD5116SY support multiple message recording and playback with I2C control interface.

Q: What is the moisture sensitivity level for both devices?

A: Both the ISD5216SY and ISD5116SY are classified as MSL 3 (168 Hours), indicating identical moisture handling and storage requirements.

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