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Analog Devices LTC4331 | Demoboard DC2754A

LTC4331 I2C Device Extender Over Rugged Differential Link

Overview

TopologyOther Topology
Input voltage2.6-5.5 V

Description

Demonstration circuit 2754A extends an I2C based QuikEval™ interface to up to 450 feet and features the LTC®4331. In order to realize the QuikEval interface, this demo circuit includes two complete I2C extenders and a remote side power supply formed from an LT®3461 boost converter and two LT1761 LDOs. The LTC4331 is a SMBus compatible I2C slave device extender designed for operation in high noise indus¬trial environments. The I2C/SMBus is extended over a single twisted pair by a ±60V fault protected differen¬tial transceiver. The LTC4331’s extended 15V common mode voltage range allows it to bridge across different ground potentials. When used as a QuikEval extender, the DC2754A requires the use of the DC2026 USB serial adapter. The DC2754A is NOT compatible with the DC590 USB serial adapter because the DC590 does not support clock stretching. The DC2754A’s jumpers and turrets allow easy re-config¬uration for use in other applications and/or demonstrat¬ing other application circuits. The circuit board is fabri¬cated with a score between the local and remote sides to allow physical separation. The link cable connections are made using either pluggable terminal blocks or an Ethernet cable. Two complete I2C extenders are present. The first extender has a full set of diagnostic LEDs, jumpers, turrets and large (0805) resistors for simple user reconfiguration and connection for customer specific application(s). The sec¬ond extender is configured specifically for the QuikEval EEPROM with no LEDs; however, it may be reconfigured and used for customer specific application(s) via 0603 jumpers and resistors and unpopulated test points on 0.1" centers. The LTC4331 data sheet gives a complete description of the part, its operation and application information. The data sheet should be referred to when reading this demo manual. The LTC4331 is available in a 20-lead QFN pack¬age and three temperature grades (commercial 0°C to 70°C, industrial –40°C to 85°C, and high temperature –40°C to 125°C).

Features

  • Up to 1MHz Serial Clock, Fast-mode Plus (Fm+)
  • Selectable Link Baud Rates Extend I2C Up to 1200m
  • Protected from Overvoltage Line Faults to ±60V
  • ±40kV ESD on Link Pins
  • IEC Level 4 ESD ±8kV and EFT ±5kV on Link Pins
  • Extended Common Mode Range: ±15V
  • Remote Interrupt/SMBALERT and Control Signals
  • Low EMI Mode
  • SMBus 3.0 Compatible
  • I2C Idle Detection, and Stuck Bus Protection
  • I2C Device Address Sharing
  • 3V to 5.5V Supply Voltage
  • 1.62V to 5.5V Logic Supply
  • 4mm × 5mm 20-Lead QFN package

Typical applications

  • Industrial Control and Sensors
  • Lighting and Sound System Control

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(mm)
f
(mm)
xPxCEMIMountApplication SystemλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
Operation Force (Value)
(g)
SchematicPackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypePins (Value)
(pcs)
RowsH
(mm)
GenderIR
(mA)
ApplicationPCB/Cable/PanelModularityWire Section Samples
742792097SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 2 SMT 1500 1800 70 MHz 1000 0.3 High Current 0.9 700
150080GS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 2 SMT 525 Green 515 450 3.2 InGaN 140 Tape and Reel 0.7
62000311121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Pin Header 6 THT Bag Straight 3 Single Pin Header 2000
702931000SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SNSR Self-Retaining Spacer 6.4 4.8
62000411121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Pin Header 8 THT Bag Straight 4 Single Pin Header 2000
62000821121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Dual Pin Header 8 THT Bag Straight 8 Dual Pin Header 2000
691361100004SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-TBL Series 3611 - 3.50 mm Vertical 14 Cable Box Vertical 4 10500 Pluggable Cable No 26 to 16 (AWG) 0.129 to 1.31 (mm²)
691321100004SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-TBL Series 3211 - 3.50 mm Vertical PCB Header 15.4 THT Box Vertical 4 10500 Pluggable PCB No
61301621121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Dual Pin Header 20.32 THT Bag Straight 16 Dual Pin Header 3000
615008138221SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WR-MJ Modular Jack Vertical Shielded 8P8C Front Post 8P8C No THT CAT 3 Tray Vertical 1500
450301014042SPEC
5 files Active i| Production is active. Expected lifetime: >10 years.WS-SLTV THT Mini Slide Switch, Opposite Side Connection 10x2.5 mm 800 SPDT Bulk 500
60800213421SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm Jumper with Test Point Bag 2 Jumper 3000
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(mm)
f
(mm)
xPxCEMIMountApplication SystemλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
Operation Force (Value)
(g)
SchematicPackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypePins (Value)
(pcs)
RowsH
(mm)
GenderIR
(mA)
ApplicationPCB/Cable/PanelModularityWire Section Samples