Kinetic Technologies KTA1550 & KTA1552 Active EMI & ESD Suppressors

Kinetic Technologies KTA1550 and KTA1552 Active EMI and ESD Suppressors are single-chip, highly integrated CMOS solutions for Common Mode (CM) noise suppression and transient voltage protection in Ethernet applications. The KTA1550 and KTA1552 deliver system-level Electrostatic Discharge (ESD) protection and Electromagnetic Interference (EMI) suppression in Ethernet products, enabling an easier path to system Electromagnetic Compatibility (EMC) Compliance.

The Kinetic Technologies KTA1550 and KTA1552 EMI and ESD Suppressors both feature Active Choke technology, which offers superior Common Mode reduction and immunity compared to passive filtering techniques without degrading Ethernet performance. The adaptive and continuous suppression operates over the entire Ethernet signal bandwidth, compensating for many variables that are the source of common mode noise in Ethernet systems. It also improves the differential-to-common mode balance of the system. This enables system designers to meet EMI emissions and EMI immunity requirements from the start of the design. These devices also include highly robust ESD/Surge protection diodes to protect the Ethernet PHY from various transient overvoltage events.

The dual-channel KTA1550 supports two twisted pair interfaces in a space-saving 4.0mm x 2.5mm 16-pin TDFN package and is suitable for 10Base-T/100Base-TX applications (two for 1000Base-T applications). The quad-channel KTA1552 supports four twisted pair interfaces in a 9.0mm x 4.0mm 36-pin DFN package and is ideal for 1000Base-T applications.

Features

Enables System Designers to Comply
- CISPR22 and FCC Part 15, Class B requirements for Radiated and Conducted Emissions
- IEC 61000-4-3 requirements for Radiated and Conducted Immunity, Level 3 or higher
- IEC 61000-4-2 ESD (Air Discharge) of ±25kV
- IEC 61000-4-2 ESD (Contact Discharge) of ±12kV
- Cable Discharge Event (CDE) of ±12kV
Interface Options
- Dual-channel (KTA1550)
- Quad-channel (KTA1552)
Provides up to 10dB of additional common mode noise suppression over the frequency of 1MHz to 125MHz when used with Ethernet magnetics
Robust built-in ESD suppressors protect the Ethernet PHY and improve system ESD performance
JESD22-A114, ESD, HBM of ±8kV
Interfaces to standard Ethernet transformers and 10/100/1000 Ethernet PHYs
Uses a single standard power rail (3.3V or 2.5V)
Flow-through routing for ease of board layout

Open drain output stage that can be biased from 1.8V to 3.3V using transformer center-tap supply as needed based on choice of Ethernet PHY
Typical Power Consumption
- 90mW (KTA1550)
- 180mW (KTA1552)
Low power mode available
Voltage Input
- 2.17V or 3.13V minimum
- 2.63V or 3.47V maximum
IEC 61000-4-3 requirements for Radiated and Conducted Immunity: Level 3 or higher
±25kV IEC 61000-4-2 ESD (air discharge)
±12kV IEC 61000-4-2 ESD (contact discharge)
Cable Discharge Event (CDE): ±12kV
-40°C to +85°C industrial temperature range
Package
- KTA1550: QSOP-16L (SOIC narrow); TDFN-16 (KTA1550)
- DFN-36 (KTA1552)

Applications

Ethernet systems requiring additional CM suppression to meet EMC Class B emissions or higher EMI immunity requirements and ESD protection
PoE and non-PoE Ethernet systems
VoIP phones
IP cameras