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參數(shù)資料
| 型號： | MAX14824ETG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 9/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC IO-LINK MASTER TXRX 24TQFN |
| 標準包裝： | 75 |
| 系列： | * |
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17
MAX14824
IO-Link Master Transceiver
Wake-Up Generation
The MAX14824 features automatic wake-up polarity gen-
eration functionality that can be initiated through hard-
ware or software. The following conditions must be met
prior to automatic wake-up polarity generation to ensure
proper functionality:
WUENislow
TXENislowandC/QDEn=0
Q=0
TXCandTXQarebothhigh
Drive WUEN high to enable the automatic wake-up
polarity generation circuitry in the device. When WUEN
is high, apply an external pulse to TXC or TXQ from
high-to-low for 80Fs (typ) to generate a valid wake-up
pulse. The applied pulse is independent of the logic
state that the IO-Link sensor was forcing on the C/Q level
(Figure 5). Drive WuEN low after the wake-up has been
generated.
The C/Q driver is automatically enabled while TXC/TXQ
is low and C/Q is pulled either from high-to-low or from
low-to-high, depending on the previous state. The C/Q
driver is automatically disabled when the TXC/TXQ inputs
are pulled high again.
Wake-up polarity generation can also be enabled through
software by setting the WuEnBit bit in the Mode register
to 1. See the Mode Register [R1, R0] = [1,1] section for
more information.
Thermal Protection and Considerations
The internal LDOs and C/Q driver can generate more
power than the package for the device can safely dis-
sipate. Ensure that the driver LDO loading is less than
the package can dissipate. Total power dissipation for
the device is calculated using the following equation:
PTOTAL = PC/Q + P5 + PLDO33 + PQ + PCLCQ + PCLDI
where PC/Q is the power generated in the C/Q driver,
P5 and PLDO33 are the power generated by the LDOs,
PQ is the quiescent power generated by the device, and
PCLCQ and PCLDI are the power generated in the C/Q
and DI current sinks.
Ensure that the total power dissipation is less than the
limits listed in the Absolute Maximum Ratings section.
Use the following to calculate the power dissipation (in
mW) due to the C/Q driver:
PC/Q = [IC/Q]2 x [RO]
Calculate the power dissipation in the 5V LDO, V5, using
the following equation:
P5 = (VLDOIN - V5) × I5
where I5 includes the ILDO33 current sourced from
LDO33.
Calculate the power dissipated in the 3.3V LDO, LDO33,
using the following equation:
PLDO33 = 1.7V × ILDO33
Calculate the quiescent power dissipation in the device
using the following equation:
PQ = ICC × VCC
If the current sinks are enabled, calculate their associ-
ated power dissipation as:
PCLCQ = ILLM_C/Q × VC/Q
PCLDI = ILLM_DI × VDI
Overtemperature Warning
Two bits in the Status and Mode registers are set when
the temperature of the device exceeds +115NC (typ). The
OTempInt bit in the Status register is set and IRQ asserts
when the OTemp bit in the Mode register is set. Read the
Status register to clear the OTempInt bit and IRQ.
The OTemp bit is cleared when the die temperature falls
below +95NC.
The device continues to operate normally unless the
die temperature reaches the +150NC thermal shutdown
threshold, when the device enters thermal shutdown.
Thermal Shutdown
When the die temperature rises above +150NC (typ) ther-
mal shutdown threshold, the C/Q drivers and the C/Q and
DI current loads are automatically turned off. The internal
3.3V and 5V LDOs remain on during thermal shutdown, if
enabled. If the internal or external V5 supply remains on
during thermal shutdown (which is always true in case of
the internal V5 regulator), the register contents are main-
tained and SPI communication available.
When the die temperature falls below the thermal shut-
down threshold plus hysteresis, the C/Q driver and C/Q
and DI current sinks turn on automatically.
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX14824ETG+ | 功能描述:輸入/輸出控制器接口集成電路 IO-Link Master Transceiver RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX14824ETG+T | 功能描述:輸入/輸出控制器接口集成電路 IO-Link Master Transceiver RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX14824EVKIT# | 功能描述:界面開發(fā)工具 MAX14824 EVAL KIT RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MAX14824GTG+ | 功能描述:輸入/輸出控制器接口集成電路 3 1/2 Digit ADC w/Reference RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX14824GTG+T | 功能描述:輸入/輸出控制器接口集成電路 Logic-Level Translator RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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