Overview
The AD1845JP-REEL, produced by Analog Devices Inc., is a Parallel-Port 16-Bit SoundPort® Stereo Codec. This integrated circuit provides a complete, single-chip computer audio solution for business audio and multimedia applications. It integrates key audio data conversion and control functions, making it ideal for use in computer motherboards or add-in cards. The AD1845 supports both ISA and EISA computer buses and includes features such as stereo audio converters, on-chip filtering, and advanced power-down modes to optimize power consumption.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16-bit | |
| Sample Rates | 4 kHz to 50 kHz | |
| Dynamic Range | Exceeds 80 dB over 20 kHz audio band | |
| Bus Interface | Byte-wide parallel interface to ISA and EISA buses | |
| Power Supply | +5 V | V |
| Package Type | 68-Lead PLCC | |
| Operating Temperature Range | 0°C to +70°C | °C |
| Digital Data Types | 16-bit twos complement linear PCM, 8-bit unsigned linear PCM, companded µ-law, and 8-bit companded A-law |
Key Features
- Single-chip integrated ΣΔ digital audio stereo codec
- Microsoft® and Windows® Sound System Compatible, MPC Level-2+ compliant mixing
- Supports two DMA channels for full duplex operation
- On-chip capture and playback FIFOs to reduce data loss risk during DMA transfers
- Programmable gain and attenuation, independent gain for each channel
- Advanced power-down modes to support low power and portable computing applications
- On-chip anti-imaging DAC output filters and digital interpolation filters
- Support for 16-bit twos complement linear PCM, 8-bit unsigned linear PCM, companded µ-law, and 8-bit companded A-law data formats
Applications
The AD1845JP-REEL is designed for various multimedia and business audio applications, including:
- Computer motherboards and add-in cards
- Notebook and portable computing multimedia applications
- Business audio systems requiring high-quality audio conversion and control
Q & A
- What is the resolution of the AD1845JP-REEL?
The AD1845JP-REEL has a resolution of 16 bits.
- What are the supported sample rates for the AD1845JP-REEL?
The supported sample rates range from 4 kHz to 50 kHz.
- What is the dynamic range of the AD1845JP-REEL?
The dynamic range exceeds 80 dB over the 20 kHz audio band.
- What type of bus interface does the AD1845JP-REEL support?
The AD1845JP-REEL supports a byte-wide parallel interface to both ISA and EISA computer buses.
- What power supply voltage does the AD1845JP-REEL require?
The AD1845JP-REEL operates from a +5 V power supply.
- What is the package type of the AD1845JP-REEL?
The AD1845JP-REEL comes in a 68-Lead PLCC package.
- What are the supported digital data types for the AD1845JP-REEL?
The AD1845JP-REEL supports 16-bit twos complement linear PCM, 8-bit unsigned linear PCM, companded µ-law, and 8-bit companded A-law data formats.
- Does the AD1845JP-REEL support DMA operations?
Yes, the AD1845JP-REEL supports two DMA channels for full duplex operation.
- What power management features does the AD1845JP-REEL have?
The AD1845JP-REEL includes advanced power-down modes to support low power and portable computing applications.
- What kind of filters are integrated into the AD1845JP-REEL?
The AD1845JP-REEL includes on-chip anti-imaging DAC output filters and digital interpolation filters.
