MT8816AE ZARLINK/MICROSEMI

The MT8816AE from ZARLINK/MICROSEMI is a high-performance 8x16 analog crosspoint switch matrix integrated circuit, housed in a DIP-40 package. This component is designed for precision signal routing and switching applications, capable of connecting any of its 8 X-inputs to any of its 16 Y-outputs. Its core functionality makes it ideal for use in telecommunication systems, automated test equipment (ATE), and data acquisition systems where flexible and reliable signal path configuration is required. The device offers low on-resistance and high off-isolation, ensuring minimal signal attenuation and crosstalk.

Features

• High Integration: Monolithic CMOS chip integrating a complete 8x16 analog switch matrix, reducing board space and component count.
• Low On-Resistance: Features low and balanced on-resistance across all switches for minimal signal distortion and voltage drop.
• High Off-Isolation: Provides excellent signal isolation when switches are off, preventing signal leakage and crosstalk between channels.
• Simple Control Interface: Supports straightforward parallel digital control for easy integration with microprocessors and logic circuits.
• Bidirectional Signal Path: Allows analog signals to pass in either direction through any closed switch, enhancing design flexibility.

Technical Specifications

• Switch Configuration: 8x16 crosspoint matrix
• On-Resistance: Typically 45Ω
• Supply Voltage (VDD): +4.5V to +13.2V
• Analog Signal Voltage Range: VSS to VDD
• Operating Temperature Range: -40°C to +85°C
• Package Type: DIP-40

Pin Configuration and Functions

• Pin 1: VDD - Positive power supply input.
• Pin 20: VSS - Negative power supply/ground.
• Pins 20, 21: GND - Ground.
• Pins 22-29: X0-X7 - Analog input/output for the 8 X-axis channels.
• Pins 30-45: Y0-Y15 - Analog input/output for the 16 Y-axis channels.
• Pins 2-9, 11-18: Address and Control Inputs (A0-A3, ST, EN, etc.) - Digital control inputs for matrix configuration.

Typical Applications

• Telecommunication Systems: For routing voice and data signals in PBX and central office switches.
• Automatic Test Equipment (ATE): Configuring signal paths for testing multiple device pins.
• Data Acquisition Systems: Multiplexing analog sensor signals to a single ADC.
• Video Signal Routing: Switching composite video signals in broadcast and security systems.
• Audio Mixing Systems: Patching and routing audio signals in professional audio consoles.

Equivalent / Alternative Parts

• MT8816 (ZARLINK/MICROSEMI) - Direct predecessor with identical core functionality and pinout.
• MT8804 (ZARLINK/MICROSEMI) - Smaller 4x8 matrix from the same family for reduced channel needs.

Advantages

• Superior Signal Integrity: Low on-resistance and high off-isolation ensure clean signal transmission with minimal degradation, crucial for analog and video applications.
• Design Flexibility: The 8x16 matrix offers 128 possible connections, allowing for highly complex and reconfigurable signal routing in a single IC.
• Robust Construction: The DIP-40 package provides mechanical durability and ease of handling for prototyping and systems where through-hole mounting is preferred.

Limitations

• Limited to Low-Frequency Signals: Performance may degrade at very high frequencies, making it less suitable for RF applications above a few tens of MHz.
• Through-Hole Packaging: The DIP-40 package is not suitable for modern, space-constrained surface-mount PCB designs.
• Power Consumption: Higher static power consumption compared to newer, smaller geometry switch ICs due to its older CMOS process.

Package Information

DIP-40 package (approximately 52.32mm x 13.97mm), 40 pins, through-hole mounting.

Manufacturer Information

Zarlink Semiconductor, which was later acquired by Microsemi (now part of Microchip Technology), was a renowned specialist in designing and manufacturing advanced analog and mixed-signal semiconductors. The company had a strong focus on communication, medical, and aerospace applications, with a reputation for producing high-reliability components. The MT8816AE is a product of this legacy, designed for demanding signal switching tasks.

Design-in Tips

• Power Supply Bypassing: Use a 0.1µF ceramic capacitor placed close to the VDD and VSS pins to minimize power supply noise and ensure stable operation.
• Signal Level Management: Ensure all analog input signals remain within the power supply rails (VSS to VDD) to prevent latch-up and damage to the internal switches.
• Control Signal Timing: Adhere to the specified setup and hold times for the address and control pins (ST, EN) as per the datasheet to ensure correct switch configuration.

Lifecycle Status & PCN/PDN Notes

Lifecycle Status: Not Recommended for New Designs (NRND) or Obsolete. This part is a legacy component. No change notifications (PCN/PDN) are available for this obsolete product.