IC manufacturers Analog Devices

IC manufacturers (103)

Analog Devices LTC4306 | Demoboard EVAL-LTC4306-PMDZ

4-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering

Overview

TopologyOther Topology
Input voltage2.7-5.5 V

Description

The EVAL-LTC4306-PMDZ features LTC4306, a 4-channel, 2-wire I2C bus and SMBus compatible multiplexer having bus buffers that provide capacitive isolation between the upstream bus and downstream buses. This evaluation board provides 6-pin PMOD connectors for upstream and downstream connection for compatibility with PMOD form factors such as EVAL-ADICUP3029, an Arduino based Wireless Development Platform for Internet of Things applications based on an ultra-low power ARM Cortex-M3 processor. Pmod™ is the Digilent defined standard of Peripheral Modules, small I/O interface boards that offer an ideal way to extend the capabilities of programmable logic and microcontroller boards. They allow sensitive signal conditioning circuits and high-power drive circuits to be placed where they are most effective - near sensors and actuators.Through software control, the EVAL-LTC4306-PMDZ connects the upstream 2-wire bus to any desired combination of downstream buses, i.e. (SCL1, SDA1 : SCL4, SDA4). Each bus can be pulled up to a supply voltage ranging from 2.7V to 5.5V, independent or dependent of the LTC4306 supply voltage by placing jumpers in different settings. The downstream buses are also provided with their own ALERT_N input pins for fault reporting.Programmable timeout circuitry disconnects the downstream buses if the bus is stuck low. When activated, rise time accelerators source currents into the 2-wire bus pins during rising edges to reduce rise time. Two general purpose input/output (GPIO) pins (accessible via the P3 connector (Not soldered)) can be configured as inputs, open-drain outputs or push-pull outputs. LEDs on the board such as RDY, GP1 and GP2 allow fault monitoring and easy signal tracing. The reset or the ENABLE pin restores all device features to their default states when driven low and opens all the FET switches that connect the upstream to the downstream buses. Only three address pins (accessible via the ADR0, ADR1 and ADR3 pin headers) provide 27 distinct I2C addresses!

Features

  • 1:4 2-Wire Multiplexer/Switch
  • Connect SDA and SCL Lines with 2-Wire Bus Commands
  • Supply Independent Bidirectional Buffer for SDA and SCL Lines Increases Fan-Out
  • Programmable Disconnect from Stuck Bus
  • Compatible with I2C and SMBus Standards
  • Rise Time Accelerator Circuitry
  • SMBus Compatible ALERT Response Protocol
  • Two General Purpose Inputs-Outputs
  • Prevents SDA and SCL Corruption During Live Board
  • Insertion and Removal from Backplane
  • ±10kV Human Body Model ESD Ruggedness
  • 24-Lead QFN (4mm × 5mm) and SSOP Packages

Typical applications

  • For programmable logic and microcontroller boards

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
50% typ.(°)
C
Tol. C
VR(V (DC))
Size
DF(%)
RISO
Ceramic Type
W(mm)
Fl(mm)
Packaging
Pins
Type
Mount
L(mm)
H(mm)
IR(A)
Working Voltage(V (AC))
Operating Temperature
Samples
WL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]525 nm
Emitting ColorGreen 
Peak Wavelength [typ.]515 nm
Luminous Intensity [typ.]430 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
Size0603 
Width0.8 mm
PackagingTape and Reel 
MountSMT 
Length1.6 mm
Height0.7 mm
Operating Temperature -40 °C up to +85 °C
WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
Size0603 
Width0.8 mm
PackagingTape and Reel 
MountSMT 
Length1.6 mm
Height0.7 mm
Operating Temperature -40 °C up to +85 °C
WCAP-CSGP MLCCs 16 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance100 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0402 
Dissipation Factor5 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Width0.5 mm
Pad Dimension0.25 mm
Packaging7" Tape & Reel 
Length1 mm
Height0.5 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 10 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance10 µF
Capacitance±10% 
Rated Voltage10 V (DC)
Size0805 
Dissipation Factor10 %
Insulation Resistance0.01 GΩ
Ceramic TypeX7R Class II 
Width1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Length2 mm
Height1.25 mm
Operating Temperature -55 °C up to +125 °C
WR-PHD Socket Header - Single, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Insulation Resistance1000 MΩ
PackagingTray 
Pins
TypeAngled 
MountTHT 
Length15.74 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
WR-PHD Jumper, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
Insulation Resistance1000 MΩ
PackagingBag 
Pins
Rated Current3 A
Working Voltage200 V (AC)
Operating Temperature -25 °C up to +105 °C
WR-PHD Pin Header - Dual, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Insulation Resistance1000 MΩ
PackagingBag 
Pins
TypeStraight 
MountTHT 
Length5.08 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
WR-PHD Pin Header - Single, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Insulation Resistance1000 MΩ
PackagingBag 
Pins
TypeAngled 
MountTHT 
Length15.24 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
WR-PHD Pin Header - Single, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Insulation Resistance1000 MΩ
PackagingBag 
Pins
TypeStraight 
MountTHT 
Length15.24 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C