CMX638L4

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CMX638L4

IC TELECOM INTERFACE 48LQFP

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規格

Supplier CML Microcircuits
Package Tray
ProductStatus Active
Function RALCWI Vocoders
Interface C-Bus
NumberofCircuits 1
Voltage-Supply 3V ~ 3.6V
Current-Supply 17.5mA
Power(Watts) 1.6 W
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 48-LQFP

概述

Description

CMX638L4 is a part from the CMX638 family (CML Microcircuits). It’s an RF data-modem IC used for narrowband wireless links. The device typically combines a baseband modem, RF front-end control, and a digital interface to a host microcontroller (usually via SPI), enabling battery-powered telemetry, remote control, asset tracking, and similar applications. The L4 suffix denotes a specific variant in the CMX638 lineup (often a particular package, frequency band, or feature set). Key attributes usually include programmable data rates, support for multiple modulation schemes, low-power operation, and configurable I/O for status/interrupts. For exact capabilities and pinout, consult the CMX638L4 datasheet from the manufacturer. If you can confirm the vendor or provide the datasheet, I can tailor the intro precisely.

Features

I don’t have the CMX638L4 datasheet on hand. Please share the datasheet or a link and I’ll pull the exact features.
Typical CMX638-series features (may vary by revision L4):
- Fully integrated RF modem (modulator/demodulator) with on‑chip RF synthesizer/PLL
- Configurable data rates via a serial control interface (SPI/I2C)
- Modulation options (e.g., FSK; sometimes MSK) with Rx/Tx paths
- On‑board filtering, AGC and data detection circuits
- Low‑power operation with standby/shutdown modes
- Wide supply range and single‑supply operation
- Diagnostics/status outputs and programmable parameters (frequency, baud rate, deviation)
- Multiple package options for surface-mount use
For precise, model-specific features, share the exact datasheet.

Manufacturer

Manufacturer: CML Microcircuits (CML Microsystems plc).
What kind of company: A UK-based semiconductor company that designs and manufactures RF/microwave integrated circuits for communications (specializing in RF ICs for wireless and wired systems).

Application

CMX638L4 is a dual FSK modem/demodulator IC for low-power RF data links. Typical applications:
- Remote telemetry and control
- Paging and data-communication systems
- Security and access-control devices
- Industrial automation and M2M links
- Utility metering/remote reading
- Automotive/telematics
- Wireless alarm and sensor networks

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