AN4143 Datasheet, PDF (1/9 Pages) STMicroelectronics – Demonstration board user guidelines for the low voltage high bandwidth STG3220 dual SPDT switch

AN4143
Application note
Demonstration board user guidelines for the low voltage high
bandwidth STG3220 dual SPDT switch
By Libor Ruzicka
Introduction
This application note concerns the STG3220 demonstration board, designed to show the
performance of the low-voltage high bandwidth STG3220 dual SPDT switch.
This document contains:
■ a brief description of the STG3220 device
■ a description of the demonstration board and all of its components
■ the layout of the demonstration board
About the STG3220 device
The STG3220 device is a high-speed CMOS low-voltage dual analog SPDT (single pole
dual throw) switch or 2:1 multiplexer/de-multiplexer switch fabricated in silicon gate C²MOS
technology. It is designed to operate from 1.65 to 4.3 V, making it ideal for portable
applications.
Key features of the STG3220 include
■ Ultra low power dissipation: I_CC = 1 μA (max.) at T_A = 85 °C
■ Low on-resistance:
– R_ON = 4.8 Ω (T_A = 25 °C) at V_CC = 4.3 V
– R_ON = 5.9 Ω (T_A = 25 °C) at V_CC = 3.0 V
■ Wide operating voltage range: V_CC (oper.) = 1.65 V to 4.3 V
■ 4.3 V tolerant and 1.8 V compatible threshold on digital control input
at V_CC = 2.3 to 3.0 V
■ Typical bandwidth (-3 dB) at 800 MHz on all channels
■ USB (2.0) high speed (480 Mbps) signal switching compliance
■ Integrated fail safe function
■ Interrupt function to indicate to the processor that the device is in dedicated port charging
mode
■ Latch-up performance exceeds 500 mA per JESD78, Clas3s II
■ ESD performance exceeds JESD22:
– Dn pins: 4000 V human body model (A114-A)
– All other pins: 2000 V human body model (A114-A)
For further information on the STG3220 device, refer to the datasheet.
August 2012
Doc ID 023460 Rev 1
1/9
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