A7670C 4G Breakout Board

A7670C 4G Breakout Board for IoT and Embedded Projects

Build reliable cellular connectivity into your next project with the A7670C 4G Breakout Board. Designed for developers, it exposes practical module pins and interfaces for flexible integration into custom PCBs, IoT devices, telematics systems, surveillance equipment, POS terminals, industrial routers, and remote diagnostic systems.

With LTE-TDD and LTE-FDD support, the board delivers data rates up to 10 Mbps downlink and 5 Mbps uplink. The A7670C module uses an LGA form factor and offers AT command compatibility with SIM7500/SIM7600 series modules, along with built-in support for common network protocols and USB drivers for Windows, Linux, and Android.

Developer-friendly breakout design

• RING: Detect incoming calls.
• DTR: Put the 4G module into ultra-low-power sleep mode.
• NETLIGHT: Drive an external LED for network status indication.
• RESET: Connect to an MCU for module reset control.
• Dedicated pin-outs for speaker and microphone connections.
• U.FL male connector for attaching an external antenna.

Specifications

• Supply voltage: 3.4 V to 4.2 V, recommended 3.8 V
• Power consumption: 2–3 A during operation
• Sleep current: Less than 2.5 mA
• Network bands: GSM 900/1800 MHz, LTE-FDD, and LTE-TDD
• LTE data rate: Up to 10 Mbps downlink and 5 Mbps uplink
• GPRS data rate: Up to 236.8 kbps downlink and 236.8 kbps uplink
• SIM support: 1.8 V and 3.0 V USIM
• Protocols: TCP/IP, IPv4, IPv6, Multi-PDP, FTP, FTPS, HTTP, HTTPS, and DNS
• Audio: PCM digital audio, analog microphone input, and analog speaker output
• Control: AT commands
• Indicators: Power LED and network status LED

Its compact form makes it easy to embed in custom hardware while retaining the connectivity and expansion options needed for serious cellular projects.