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RFQ (Request for Quotations)It is recommended to request for quotations to get the latest
prices and inventories about the part.
Our sales will reply to
your request by email within 24 hours.
1. You'll receive an order information email in your inbox.
(Please remember to check the spam folder if you didn't hear from us).
2. Since inventories and prices may fluctuate to some
extent, the sales manager is going to reconfirm the order and let you know if there
are any updates.
Shipping starts at $40, but some countries will exceed $40. For
example (South Africa, Brazil, India, Pakistan, Israel, etc.)
The basic freight (for package ≤0.5kg or corresponding volume) depends on the time
zone and country.
Currently, our products are shipped through DHL, FedEx, SF, and UPS.
Delivery TimeOnce the goods are shipped, estimated delivery time depends on the shipping methods you chose:
FedEx International, 5-7 business days.
The following are some common countries' logistic time.Parameters | |
---|---|
Factory Lead Time | 10 Weeks |
Mounting Type | Surface Mount |
Package / Case | 48-VFQFN Exposed Pad |
Surface Mount | YES |
Operating Temperature | -40°C~85°C |
Part Status | Active |
Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Number of Terminations | 48 |
Power (Watts) | 1.75W |
Subcategory | Other Telecom ICs |
Voltage - Supply | 3V~3.6V |
Terminal Position | QUAD |
Terminal Form | NO LEAD |
Peak Reflow Temperature (Cel) | NOT SPECIFIED |
Supply Voltage | 1.8V |
Terminal Pitch | 0.5mm |
Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
JESD-30 Code | S-XQCC-N48 |
Function | RALCWI Vocoders |
Qualification Status | Not Qualified |
Interface | C-Bus |
Number of Circuits | 1 |
Operating Mode | SYNCHRONOUS |
Current - Supply | 17.5mA |
Telecom IC Type | PCM CODEC |
Filter | YES |
Length | 7mm |
Width | 7mm |
RoHS Status | ROHS3 Compliant |
The CMX638Q3 is a flexible, high integration, high performance, RALCWI (Robust Advanced Low Complexity Waveform Interpolation) Vocoder, offering near-toll-quality voice at very low bit rates.
Near Toll Quality RALCWI Coding Algorithm
Multiple Bit Rate Modes:
-2400 or 2750 bps
-3600 bps with FEC Enabled
4-bit Viterbi Soft Decision Decoding
Integrated Audio CODEC (CMX618/CMX638 only)
Integrated Input and Output Channel Filters
20ms, 40ms, 60ms and 80ms Packet Lengths
No Licensing or Royalty Payments
1.8V Low Power Operation, 3.3V Tolerant I/O
Small 48-pin LQFP and VQFN Packages
Digital PMR, LMR, Voice Radio
Digital Trunking
DMR TDMA
DMR FDMA, dPMR
Digital Voice Scrambling and Encryption
Digital WLL
Voice Storage and Playback Systems
Regenerative Digital Voice Repeaters
Messaging Systems
VoIP Systems
Voice Pagers
Please send RFQ , we will respond immediately.