SINGLE-CHIP VOICE RECORD/PLAYBACK DEVICES 2-, 2.5-, 3-, AND 4-MINUTE DURATIONS The ISD33120S is a digital voice recorder and playback chip manufactured by ISD (Integrated Silicon Solution Inc.). Below are the factual specifications, descriptions, and features of the ISD33120S:
### **Specifications:**
- **Memory Capacity:** 120 seconds of audio storage.
- **Sampling Frequency:** Typically 8 kHz (adjustable for different durations).
- **Audio Quality:** 4-bit ADPCM compression for clear voice recording.
- **Operating Voltage:** 3V (2.4V to 5.5V range).
- **Interface:** Serial (SPI) for easy microcontroller integration.
- **Recording Modes:** Supports single or multiple messages.
- **Playback Modes:** Single, multiple, or sequential playback.
- **Standby Current:** Low power consumption in standby mode (typically 1 µA).
- **Operating Temperature:** -40°C to +85°C (industrial-grade).
- **Package:** SOP (Small Outline Package).
### **Descriptions:**
The ISD33120S is a high-quality, single-chip voice recorder and playback solution designed for embedded applications. It integrates non-volatile storage, eliminating the need for external memory. The chip is commonly used in consumer electronics, industrial devices, and automotive applications where voice prompts or recordings are required.
### **Features:**
- **Non-Volatile Storage:** Retains audio without power.
- **Low Power Consumption:** Suitable for battery-operated devices.
- **Direct Analog Interface:** Built-in microphone preamp and speaker driver.
- **Flexible Message Management:** Supports up to 240 messages (with 0.5-second granularity).
- **No External Components Needed:** Minimal external circuitry required for operation.
- **Endurance:** Supports 100,000 record/playback cycles.
- **Automatic Power-Down:** Reduces power consumption when idle.
These details are based on the manufacturer's datasheet and technical documentation.
