AD28MSP01KN

Overview

The AD28MSP01KN is a complete analog front-end integrated circuit designed for high-performance DSP-based modems. Manufactured by Analog Devices Inc., it integrates linear-coded 16-bit Sigma-Delta ADC and DAC, on-chip anti-alias and anti-image filters, and digital resampling/interpolation filters. The device supports sample rates of 7.2 kHz, 8.0 kHz, and 9.6 kHz, with additional modes for 8.23 kHz, 9.14 kHz, and 10.97 kHz. It operates on a single +5 V supply and includes bit/baud clock generation and a transmit digital PLL for terminal synchronization.

Feature Summary

• Complete analog I/O port for DSP-based fax/modem applications
• Linear-coded 16-bit Sigma-Delta ADC and DAC
• On-chip anti-alias and anti-image filters
• Supports multiple sampling rates: 7.2 kHz, 8.0 kHz, 9.6 kHz, 8.23 kHz, 9.14 kHz, and 10.97 kHz

Applications

• High performance DSP-based modems (V.32ter, V.32bis, V.32, V.22bis, V.22, V.21, Bell 212A, 103 Fax)
• Cellular-compatible modems
• Integrated fax, modem, and speech processing systems

Part Context

The AD28MSP01KN belongs to the AD28MSP series of voiceband signal ports from Analog Devices. This family provides complete analog front-end solutions for implementing echo-cancelling modems with a single host digital signal processor. The 'KN' suffix typically denotes a specific package and temperature range variant within this product line.

Replacement Considerations

Compatible alternatives include other members of the AD28MSP series such as the AD28MSP02, which serves as a voiceband signal port. When selecting a replacement, verify that the pinout, package type, and supported modem standards match the original design requirements.