Overview
The AD1887JST-REEL is an AC'97 SoundMAX® Codec produced by Analog Devices Inc. This integrated circuit is designed to add analog and digital audio capabilities to computer motherboards by connecting directly to the AC'97 core logic chipset. It enhances sound quality, increases system flexibility, and reduces the system Bill of Materials (BOM) cost by integrating multiple components into a single device.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supplies (Digital, DVDD) | -0.3 | 3.6 | V | |
| Power Supplies (Analog, AVCC) | -0.3 | 6.0 | V | |
| Input Clock Frequency | 24.576 | MHz | ||
| Recommended Clock Duty Cycle | 40 | 50 | 60 | % |
| Analog Supply Current (AVDD) at 5 V | 36 | mA | ||
| Digital Supply Current (DVDD) at 3.3 V | 22 | mA | ||
| Power Dissipation at 5 V/3.3 V | 253 | mW | ||
| Ambient Temperature (Operating) | 0 | 70 | °C | |
| Storage Temperature | -65 | 150 | °C |
Key Features
- Full compliance with the AC'97 2.1 specification, ensuring compatibility with a wide range of systems.
- Integration with the AC'97 core logic chipset to enhance sound quality and system flexibility.
- Support for multiple audio functions, including microphone input, line input, and headphone output.
- 16-bit stereo codec with built-in analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
- Power supply rejection of 40 dB at both analog and digital supply pins.
- ESD protection circuitry to prevent damage from electrostatic discharges.
- Thin-Quad Flatpack ST-48 package, suitable for surface mount applications.
Applications
- Computer motherboards: Enhances audio capabilities by integrating directly with the AC'97 core logic chipset.
- Audio equipment: Suitable for use in various audio devices requiring high-quality digital-to-analog and analog-to-digital conversion.
- Embedded systems: Can be used in embedded systems that require integrated audio functionality.
Q & A
- What is the AD1887JST-REEL used for?
The AD1887JST-REEL is used to add analog and digital audio capabilities to computer motherboards and other audio equipment.
- What is the operating temperature range of the AD1887JST-REEL?
The operating temperature range is from 0°C to 70°C.
- What is the recommended input clock frequency for the AD1887JST-REEL?
The recommended input clock frequency is 24.576 MHz.
- Does the AD1887JST-REEL support ESD protection?
Yes, it features proprietary ESD protection circuitry.
- What is the power dissipation of the AD1887JST-REEL at 5 V/3.3 V?
The power dissipation is approximately 253 mW.
- What type of package does the AD1887JST-REEL come in?
The AD1887JST-REEL comes in a Thin-Quad Flatpack ST-48 package.
- Does the AD1887JST-REEL support multiple audio inputs and outputs?
Yes, it supports microphone input, line input, and headphone output.
- What is the resolution of the ADC and DAC in the AD1887JST-REEL?
The AD1887JST-REEL features 16-bit stereo ADC and DAC.
- Is the AD1887JST-REEL compliant with AC'97 specifications?
Yes, it is fully compliant with the AC'97 2.1 specification.
- What is the storage temperature range for the AD1887JST-REEL?
The storage temperature range is from -65°C to 150°C.
