Datasheet LTC4332 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | SPI Extender Over Rugged Differential Link |
| 页数 / 页 | 22 / 1 — FEATURES. DESCRIPTION. 2MHz SCK Over 10m, Operation Up to 1200m. Three … |
| 修订版 | A |
| 文件格式/大小 | PDF / 1.5 Mb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. 2MHz SCK Over 10m, Operation Up to 1200m. Three Extended Slave Selects
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LTC4332 SPI Extender Over Rugged Differential Link
FEATURES DESCRIPTION
n
2MHz SCK Over 10m, Operation Up to 1200m
The LTC®4332 is a point-to-point rugged SPI extender n
Three Extended Slave Selects
designed for operation in high noise industrial environ- n
Protected from Overvoltage Lines Fault to ±60V
ments over long distances. Using a ±60V fault protected n
±40kV HBM ESD on Link Pins
differential transceiver, the LTC4332 can transmit SPI data, n
IEC ESD ±6kV and EFT ±4kV on Link Pins
including an interrupt signal, up to 2MHz over two twisted n
Extended Common Mode Range: ±25V
pair cables. The extended common mode range and high n Extended Interrupt common mode rejection on the differential link provides n Separate Programmable SPI Modes tolerance to large ground differences between nodes. n 3V to 5.5V Supply Voltage The LTC4332 provides a control interface using a separate n 1.62V to 5.5V Logic Supply slave select for configuration and fault monitoring. n 4mm × 5mm 20-Lead QFN Package All registered trademarks and trademarks are the property of their respective owners.
APPLICATIONS
n Industrial Control and Sensors n Lighting and Sound System Control
TYPICAL APPLICATION Extended SPI Network Over 10m CAT5, 2MHz SCK
LTC4332 3.3V LTC4332 3.3V VCC VCC 3.3V V 620Ω L VL 620Ω 10m 620Ω ON Y A ON 10kΩ 10kΩ LINK 110Ω LINK Z B MCU_INT INT INT REM_INT 620Ω 3.3V MCU_SCK SCK SCK REM_SCK MCU_MISO MISO MISO REM_MISO 620Ω MCU_MOSI MOSI MOSI REM_MOSI 10m MCU_SS1 SS1 A Y SS1 REM_SS1 MCU_SS2 SS2 110Ω SS2 REM_SS2 MCU_SS3 SS3 SS3 REM_SS3 B Z MCU_SS4 SSC 620Ω REMOTE REMOTE 3.3V SPEED1 SPEED1 SPEED2 SPEED2 GND1 V GROUND LOOP GND2 4332 TA01 ≤25V PEAK BYPASS CAPACITORS OMITTED FOR CLARITY Rev. A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagram Applications Information Package Description Typical Application Related Parts
FEATURES DESCRIPTION
n
2MHz SCK Over 10m, Operation Up to 1200m
The LTC®4332 is a point-to-point rugged SPI extender n
Three Extended Slave Selects
designed for operation in high noise industrial environ- n
Protected from Overvoltage Lines Fault to ±60V
ments over long distances. Using a ±60V fault protected n
±40kV HBM ESD on Link Pins
differential transceiver, the LTC4332 can transmit SPI data, n
IEC ESD ±6kV and EFT ±4kV on Link Pins
including an interrupt signal, up to 2MHz over two twisted n
Extended Common Mode Range: ±25V
pair cables. The extended common mode range and high n Extended Interrupt common mode rejection on the differential link provides n Separate Programmable SPI Modes tolerance to large ground differences between nodes. n 3V to 5.5V Supply Voltage The LTC4332 provides a control interface using a separate n 1.62V to 5.5V Logic Supply slave select for configuration and fault monitoring. n 4mm × 5mm 20-Lead QFN Package All registered trademarks and trademarks are the property of their respective owners.
APPLICATIONS
n Industrial Control and Sensors n Lighting and Sound System Control
TYPICAL APPLICATION Extended SPI Network Over 10m CAT5, 2MHz SCK
LTC4332 3.3V LTC4332 3.3V VCC VCC 3.3V V 620Ω L VL 620Ω 10m 620Ω ON Y A ON 10kΩ 10kΩ LINK 110Ω LINK Z B MCU_INT INT INT REM_INT 620Ω 3.3V MCU_SCK SCK SCK REM_SCK MCU_MISO MISO MISO REM_MISO 620Ω MCU_MOSI MOSI MOSI REM_MOSI 10m MCU_SS1 SS1 A Y SS1 REM_SS1 MCU_SS2 SS2 110Ω SS2 REM_SS2 MCU_SS3 SS3 SS3 REM_SS3 B Z MCU_SS4 SSC 620Ω REMOTE REMOTE 3.3V SPEED1 SPEED1 SPEED2 SPEED2 GND1 V GROUND LOOP GND2 4332 TA01 ≤25V PEAK BYPASS CAPACITORS OMITTED FOR CLARITY Rev. A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagram Applications Information Package Description Typical Application Related Parts