Overview
The NCN5120MNTWG, produced by onsemi, is a sophisticated receiver-transmitter IC designed specifically for use in KNX twisted pair networks (KNX TP1-256). This component is integral for connecting various devices such as actuators, sensors, microcontrollers, and switches within a building network. It handles both the transmission and reception of data on the bus and generates stabilized voltages from the unregulated bus voltage to power both the IC itself and external devices.
The NCN5120MNTWG has been replaced by the NCN5121, but it remains a robust solution for KNX network implementations, offering features like bus voltage supervision, high-efficiency DC-DC converters, and support for selectable KNX bus current consumption.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VBUS1 Voltage | +20 | - | +33 | V |
| VDD Digital and Analog Supply Voltage | +3.13 | - | +3.47 | V |
| VIN Input Voltage DC-DC Converter 1 and 2 | +8.47 | - | +33 | V |
| Operating Temperature Range | -25 | - | +85 | °C |
| Junction Temperature Range | -25 | - | +125 | °C |
| XTAL Oscillator Frequency | - | 16 | - | MHz |
| KNX Communication Speed | - | 9600 | - | baud |
Key Features
- 9600 baud KNX communication speed
- Supervision of KNX bus voltage
- Supports bus current consumption up to 13 and 26 mA
- Selectable KNX bus current (0.5 mA/ms and 1.0 mA/ms)
- High-efficiency DC-DC converters (3.3 V fixed and 3.3 V to 21 V selectable)
- Control and monitoring of power regulators
- Linear 20 V regulator
- Prepared for sleep mode
- Buffering of sent data frames (extended frames supported)
- Selectable UART or SPI interface to host controller
- Selectable UART and SPI baud rate to host controller
- Optional CRC on UART to the host
- Optional received frame-end with MARKER service
- Optional direct coupling of RxD and TxD to host (analog mode)
- Operates with industry-standard low-cost 16 MHz quartz
- Generates clock of 8 or 16 MHz for external devices
- Auto acknowledge (optional) and auto polling (optional)
- Temperature monitoring
Applications
The NCN5120MNTWG is designed for use in various building automation and control systems, particularly those utilizing KNX twisted pair networks. It is suitable for connecting and managing actuators, sensors, microcontrollers, and switches within these networks. The component is also applicable in smart home systems, commercial building automation, and industrial control environments where reliable and efficient communication over KNX protocols is required.
Q & A
- What is the primary function of the NCN5120MNTWG?
The NCN5120MNTWG is a receiver-transmitter IC designed for use in KNX twisted pair networks, handling both data transmission and reception.
- What is the KNX communication speed supported by the NCN5120MNTWG?
The NCN5120MNTWG supports a KNX communication speed of 9600 baud.
- What are the operating temperature ranges for the NCN5120MNTWG?
The operating temperature range is from -25°C to +85°C, and the junction temperature range is from -25°C to +125°C.
- Does the NCN5120MNTWG support multiple interface options?
Yes, it supports selectable UART or SPI interfaces to the host controller.
- What kind of power regulation does the NCN5120MNTWG provide?
The component includes high-efficiency DC-DC converters and a linear 20 V regulator, and it can generate stabilized voltages for its own power needs and for external devices.
- Is the NCN5120MNTWG suitable for sleep mode operations?
Yes, the NCN5120MNTWG is prepared for sleep mode to conserve power.
- What is the significance of the bus voltage supervision feature?
The bus voltage supervision feature ensures safe coupling to and decoupling from the bus, warning the external microcontroller in case of power loss.
- Can the NCN5120MNTWG generate clocks for external devices?
Yes, it can generate clocks of 8 or 16 MHz for external devices.
- Does the NCN5120MNTWG support temperature monitoring?
Yes, it includes temperature monitoring capabilities.
- What is the package type of the NCN5120MNTWG?
The NCN5120MNTWG comes in a QFN-40 (6x6) package.
- Is the NCN5120MNTWG RoHS compliant?
Yes, the NCN5120MNTWG is Pb-free and RoHS compliant.
