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Overview
| Topology | Other Topology |
| Input voltage | 2.6-5.5 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
- Lighting and Sound System Control
- Industrial Control and Sensors
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | xPxC | Mount | Application System | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Operation Force (Value) (g) | Schematic | Packaging | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Pins | Rows | H (mm) | Gender | IR (mA) | Application | PCB/Cable/Panel | Modularity | Wire Section | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 742792097 | SPEC | 8 files | WE-CBF SMT EMI Suppression Ferrite Bead | 2 | – | – | SMT | – | – | – | – | – | – | – | – | – | – | – | 1500 | 1800 | 70 MHz | 1000 | 0.3 | High Current | – | – | 0.9 | – | 700 | – | – | – | – | ||
 | 150080GS75000 | SPEC | 7 files | WL-SMCW SMT Mono-color Chip LED Waterclear | 2 | – | – | SMT | – | 525 | Green | 515 | 450 | 3.2 | InGaN | 140 | – | – | Tape and Reel | – | – | – | – | – | – | – | – | 0.7 | – | – | – | – | – | – | ||
 | 62000311121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 6 | – | – | THT | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | Straight | 3 | Single | – | Pin Header | 2000 | – | – | – | – | |
 | 702931000 | SPEC | – | 3 files | WA-SNSR Self-Retaining Spacer | 6.4 | 4.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 62000411121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 8 | – | – | THT | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | Straight | 4 | Single | – | Pin Header | 2000 | – | – | – | – | |
 | 62000821121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Dual Pin Header | 8 | – | – | THT | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | Straight | 8 | Dual | – | Pin Header | 2000 | – | – | – | – | |
 | 691361100004 | SPEC | – | 3 files | 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) | |
 | 691321100004 | SPEC | – | 6 files | WR-TBL Series 3211 - 3.50 mm Vertical PCB Header | 15.4 | – | – | THT | – | – | – | – | – | – | – | – | – | – | Box | – | – | – | – | – | Vertical | 4 | – | – | – | 10500 | Pluggable | PCB | No | – | |
 | 61301621121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Dual Pin Header | 20.32 | – | – | THT | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | Straight | 16 | Dual | – | Pin Header | 3000 | – | – | – | – | |
 | 615008138221 | SPEC | – | 7 files | WR-MJ Modular Jack Vertical Shielded 8P8C Front Post | – | – | 8P8C | THT | CAT 3 | – | – | – | – | – | – | – | – | – | Tray | – | – | – | – | – | Vertical | – | – | – | – | 1500 | – | – | – | – | |
 | 450301014042 | SPEC | – | 5 files | WS-SLTV THT Mini Slide Switch, Opposite Side Connection 10x2.5 mm | – | – | – | – | – | – | – | – | – | – | – | – | 800 | SPDT | Bulk | – | – | – | – | – | – | – | – | – | – | 500 | – | – | – | – | |
 | 60800213421 | SPEC | – | 3 files | WR-PHD 2.00 mm Jumper with Test Point | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | – | 2 | – | – | Jumper | 3000 | – | – | – | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | xPxC | Mount | Application System | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Operation Force (Value) (g) | Schematic | Packaging | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Pins | Rows | H (mm) | Gender | IR (mA) | Application | PCB/Cable/Panel | Modularity | Wire Section | Samples |
|---|