Product category:
Analogue and Mixed Signal ICs
News Release from: Gothic Components | Subject: OKI ML2502
Edited by the Electronicstalk Editorial
Team on 15 February 2001
Audio storage and playback IC runs for
20s
A new single-chip solution for storage and playback of short audio sequences is now available from Gothic Components.
A new single-chip solution for storage and playback of short audio sequences is now available from Gothic Components The OKI ML2502 employs multi-level, analogue signal storage techniques to read/write up to 20 seconds of uncompressed audio from the on-chip 128Kbit-cell flash memory
This article was originally published on Electronicstalk on 15 Mar 2001 at 8.00am (UK)
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The ML2502 LSI requires no back-up or external MCU, targeting applications such as voice messaging, message cards or interactive toys.
Built-in features include a microphone amplifier with AGC and a speaker driver to support an external dynamic or piezoelectric speaker via an external R-C network.
Supply voltage range is 2.7 to 3.3V and operating temperature is -10 to +70C.
In single-phrase mode the ML2502 uses the entire on-chip flash memory for a single message.
Dual-phrase mode partitions the memory to store two shorter messages.
At 6.4kHz sample rate, dual-phrase mode supports two messages up to 10 seconds each.
Single phrase mode allows up to 20 seconds record/playback.
A development board for the ML2502 is also available, providing a convenient and rapid design route into commercial products.
The demo board allows all features of the ML2502 device to be exercised, with a micro switch array to select dual/single phrase mode and sample frequency.
Inputs for phrase-1 and phrase-2 record and playback signals, manual speaker gain control and led monitor are provided.
The development board also includes a microphone and speaker, enabling new designs based on the ML2502 to be readily evaluated.
The ML2502 is part of a family of speech parts that includes other voice recorders and playback devices.
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