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CMX649E3
CMX649E3 - Brand New Cmedia IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
Brief Description
The CMX649 Adaptive Delta Modulation(ADM) Voice Codec provides full duplex
ADM, companded (µ/A-law) PCM and linear PCM codec and transcoder functions for
cost effecive, low power, wireless voice applications. Selectable modes and
algorithms support many applications. Robust ADM coding (e.g. CVSD) reduces
host protocol and software burdens, eliminating forward error correction,
framing protocols and algorithm processing. Dual transcode/decode mode
supports multichannel applications. Integrated filter responses adjust
independent of 16kbps to 128kbps codec data rates. Codec sample clocks are
externally applied or internally generated. High performance analog interfaces
and sidetone include digital gain controls. Encoder and decoder voice activity
detectors support powersaving.
The CMX649 ADMVoice Codec supports 2.7V to 5.5V operation and is available in
20-pin SOIC (D3) and TSSOP packages (E3) packages.
Features
· Multiple Codec Modes, 16 to 128 kbps
-- Full duplex ADM and CVSD
-- Full duplex PCM: µ-law, A-law, Linear
-- Configurable ADM time constants
-- Dual channel transcoder/decoder mode
· High Performance Digital Architecture
· Low Power: 2.5mA at 3.0V typ.
· 2.7V - 5.5V Supply
· Data Clock Recovery
· Programmable Voice Activity Detector (VAD)
-- Adjust threshold level and attack/decay time
-- Use to powersave on low signal level
-- Silence/blank low level signals
· Programmable Digital Scrambler
· Flexible Interfaces
-- 8-bit and 16-bit burst data with sync strobe
-- 1 bit serial data with clock
-- Host serial control/data interface
· Internal and External Sample Clocking
· Programmable Filters
-- Encoder mic input ADC anti-alias
-- Decoder audio out DAC anti-imaging
· Low Noise Differential Mic Input Amp
· Programmable Analog Interface Gain
-- Microphone in
-- Decoder audio out
-- Sidetone path
Applications
· Low Cost Digital Cordless Headset
· Personal Area Network (PAN) Voice Link
· Digital Cordless Telephone
· Wireless Digital PBX
· Full Duplex Digital Radio Systems
· Time Division Duplex (TDD) Systems
· Portable Digital Voice Communicator
· Digital Voice Delay
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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