Texas Instruments TCA9534A | Demoboard TIDA-010122

Description

This reference design provides the solution for synchronization design challenges associated with emerging 5G adapted applications like massive multiple input multiple output (mMIMO), phase array RADAR and communication payload. The typical RF front end contains antenna, low noise amplifier (LNA), mixer , local oscillator (LO) in analog domain and analog to digital converter, numerical controlled oscillator (NCO) and digital down converter (DDC) in digital domain. To achieve overall system synchronization these digital blocks need to be synchronize with system clock. This reference design uses ADC12DJ3200 data converter, achieve less than 5-ps channel-to-channel skew across multiple receiver with deterministic latency by synchronizing on chip NCO with SYNC~ and uses noiseless aperture delay adjustment (tAD Adjust) feature to further reduce skew. This design also provides a very low phase noise clocking solution based the LMX2594 wide band PLL and the LMK04828 synthesizer and jitter cleaner.

Features

• Low Standby Current Consumption
• I2C to Parallel Port Expander
• Open-Drain Active-Low Interrupt Output
• Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
• 5-V Tolerant I/O Ports
• 400-kHz Fast I2C Bus
• Three Hardware Address Pins Allow up to EightDevices on the I2C/SMBus
• Input and Output Configuration Register
• Polarity Inversion Register
• Internal Power-On Reset
• Power-Up With All Channels Configured as Inputs
• No Glitch on Power Up
• Noise Filter on SCL/SDA Inputs
• Latched Outputs With High-Current DriveMaximum Capability for Directly Driving LEDs
• Latch-Up Performance Exceeds 100 mA PerJESD 78, Class II
• ESD Protection Exceeds JESD 22– 2000-V Human-Body Model (A114-A)– 1000-V Charged-Device Model (C101)

Typical applications

• Products With GPIO-Limited Processors
• Servers / Routers (Telecom Switching Equipment)
• Personal Computers
• Industrial Automation
• Personal Electronics (for example: Gaming Consoles)

More information

• Datasheet
• IC product information