CMX639D4

$17.71

Description：CVSD VOICE CODEC
Series：-

SKU:3cb559b04efc Category: CODECS Brand: CML Micro

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Product introduction

CMX639D4 is listed in the Codecs range at ChipApex. The manufacturer field lists CML Micro. Its product description is CVSD VOICE CODEC. Review the specifications below when checking this part for your BOM.

Codecs specifications for CMX639D4

Description：CVSD VOICE CODEC
Series：-
Mfr：CML Micro
Package：Tube
Type：General Purpose
Data Interface：-
Resolution (Bits)：-
Sigma Delta：No
S/N Ratio, ADCs / DACs (db) Typ：-
Dynamic Range, ADCs / DACs (db) Typ：-
Voltage - Supply, Analog：2.7V ~ 5.5V
Voltage - Supply, Digital：2.7V ~ 5.5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.295", 7.50mm Width)
Supplier Device Package：16-SOIC
Grade：-
Qualification：-

Codecs datasheet and documents for CMX639D4

CMX639D4

Codecs Overview

The CMX639D4 is a single-chip full-duplex CVSD digital voice codec manufactured by CML Microcircuits. It operates on a single supply voltage ranging from 2.7V to 5.5V and supports data rates between 8kbps and 128kbps. The device integrates input and output filters, eliminating the need for external components. It features programmable sampling clocks derived from an internal oscillator or external clock sources. Typical current consumption is 1.9mA at 3.0V and 2.75mA at 5.0V. The component is housed in a 16-pin SOIC package.

Codecs Feature Summary

Integrates encoder and decoder functions with built-in analog filters
Supports selectable 3-bit and 4-bit companding algorithms
Includes a dedicated powersave mode for low-power applications

Codecs Applications

Consumer and business handheld devices
Cordless phones
Voice recording and storage systems
Spread spectrum wireless links

Codecs Procurement Notes

Verify the specific D4 suffix indicates the 16-pin SOIC package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure design compatibility with the specified operating temperature range of -40°C to +85°C. Validate that the selected clock frequency aligns with the required data rate specifications.

Codecs Selection Notes

Select this component for applications requiring integrated full-duplex voice encoding without external filter complexity. Consider the 16-pin SOIC package constraints for PCB layout. Evaluate power requirements against the typical current draw at the target supply voltage. Verify interface timing compatibility with the host microcontroller or processor.

Codecs Part Context

This part belongs to the CMX639 series of CVSD codecs. Other variants include the CMX639E2 in a 24-pin TSSOP package. The CMX639P6 variant in a 22-pin PDIP package has been discontinued. The series is designed for consumer and commercial digital voice communication systems.