Protocol PHY Chip

Product Specifications

Technical details and manufacturing context for Protocol PHY Chip

Definition

A Protocol PHY Chip is an integrated circuit that serves as the physical layer transceiver in an interface module, responsible for converting digital data into analog signals for transmission over physical media (such as copper cables or fiber optics) and vice versa for reception. It handles signal modulation, encoding, synchronization, and electrical/optical interfacing according to specific communication standards (e.g., Ethernet, USB, PCIe). This directory entry provides reference specifications for a typical industrial-grade PHY chip, including a supply voltage of 3.3 V ±10%, power consumption of 0.5–1.5 W at 100 Mbps, and support for data rates of 10/100/1000 Mbps per IEEE 802.3. The operating temperature range is -40 to 85 °C, storage temperature -55 to 125 °C, and junction temperature maximum rating -40 to 125 °C. The device is offered in a QFN-48 package with a 7x7 mm footprint (49 mm²), and has an ESD tolerance of ±8 kV (HBM) per IEC 61000-4-2. Humidity range is 5–95% RH non-condensing. The chip is fabricated on silicon. These values are typical reference ranges and must be verified against the specific model and application with the legal manufacturer or supplier. The chip operates by receiving digital data from the Media Access Control (MAC) layer, applying physical layer encoding (e.g., 8b/10b, 64b/66b), modulating it into electrical or optical signals suitable for the transmission medium, and driving these signals through the interface. On reception, it performs signal conditioning, clock recovery, demodulation, and decoding to reconstruct the digital data for the MAC layer. Selection inputs include required data rate, interface standard, power budget, and environmental conditions. Verification questions should address compliance with the relevant standard, actual power consumption, and thermal performance. Maintenance signals include monitoring for bit errors, link loss, and temperature excursions. Failure boundaries are defined by the absolute maximum ratings, such as junction temperature and ESD tolerance.

Working Principle

The chip operates by receiving digital data from the Media Access Control (MAC) layer, applying physical layer encoding (e.g., 8b/10b, 64b/66b), modulating it into electrical or optical signals suitable for the transmission medium, and driving these signals through the interface. On reception, it performs signal conditioning, clock recovery, demodulation, and decoding to reconstruct the digital data for the MAC layer. The physical medium may be copper or fiber, and the chip handles the necessary electrical or optical interfacing. The data rate is auto-negotiated according to IEEE 802.3, supporting 10/100/1000 Mbps. The chip's supply voltage is 3.3 V ±10%, and it operates within a temperature range of -40 to 85 °C. The device is designed for industrial environments, with an ESD tolerance of ±8 kV (HBM) and a humidity range of 5–95% RH non-condensing. The package is QFN-48 with a 7x7 mm footprint. These specifications are reference values and must be confirmed for the specific model.

Common Materials

Silicon

Technical Parameters

Parameter	Typical range	Notes & selection driver
Supply Voltage	3.3 ±10% V	Operating range for core and I/O
Power Consumption	0.5–1.5 W	Typical at 100 Mbps
Data Rate	10/100/1000 Mbps	Auto-negotiation supportedIEEE 802.3
Operating Temperature	-40–85 °C	Industrial grade
Storage Temperature	-55–125 °C	Non-operating
ESD Tolerance	±8 kV	HBM modelIEC 61000-4-2
Package Type	QFN-48	7x7 mm
Footprint	49 mm²	QFN-48 package
Humidity Range	5–95 % RH	Non-condensing
Junction Temperature	-40–125 °C	Maximum rating

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Transmitter
Converts digital data to analog signals and drives the transmission medium

Material: Silicon
Receiver
Amplifies, conditions, and converts incoming analog signals to digital data

Material: Silicon
Clock Data Recovery (CDR) Circuit
Extracts clock signal from the incoming data stream for synchronization

Material: Silicon
Serializer/Deserializer (SerDes)
Converts parallel data to serial for transmission and serial to parallel for reception

Material: Silicon
Encoder/Decoder Block
Applies the line coding (8b/10b, 64b/66b) on transmit and undoes it on receive.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Interface Module

View system integration details

Manufacturers of Protocol PHY Chip

Manufacturer profiles associated with Protocol PHY Chip.

Sourcing Protocol PHY Chip from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is a Protocol PHY Chip?

A Protocol PHY Chip is an integrated circuit that implements the physical layer of a communication protocol, converting digital data to analog signals for transmission and vice versa. It handles encoding, modulation, and interfacing with the physical medium.

What data rates does this PHY chip support?

According to the reference specifications, it supports 10/100/1000 Mbps with auto-negotiation, per IEEE 802.3. Actual support must be verified with the manufacturer for the specific model.

What is the operating temperature range?

The reference operating temperature range is -40 to 85 °C, suitable for industrial applications. Storage temperature is -55 to 125 °C, and junction temperature maximum is -40 to 125 °C.

What package is available?

The reference package is QFN-48 with a 7x7 mm footprint (49 mm²). Confirm the exact package and footprint with the supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Protocol PHY Chip

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

voltage:	1.8V, 2.5V, 3.3V ±10% (core/supply)
data rate:	Up to 10 Gbps (protocol-dependent)
temperature:	-40°C to +125°C (operating), -55°C to +150°C (storage)
power consumption:	Typically <500 mW active, <10 mW low-power modes

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards