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參數(shù)資料
| 型號： | MAX14820ETG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 10/30頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC IO-LINK TXRX 24TQFN |
| 標準包裝： | 75 |
| 系列： | * |
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MAX14820
IO-Link Device Transceiver
18
Maxim Integrated
Wake-Up Detection
The device detects an IO-Link wake-up condition on the
C/Q line in push-pull, high-side (PNP), or low-side (NPN)
operation modes. A wake-up condition is detected when
the C/Q output is shorted for 80Fs (typ). WU pulses low
for 190Fs (typ) when the device detects a wake-up pulse
on C/Q (Figure 5).
Set the WuIntEn bit in the Mode register to set the WuInt
bit in the Status register and generate an interrupt on
IRQ when a wake-up pulse is detected. WuInt is set
and IRQ asserts immediately after C/Q is released when
WuIntEn = 1.
Thermal Protection and Considerations
The internal LDOs and drivers can generate more power
than the package for the devices can safely dissipate.
Ensure that the driver LDO loading is less than the pack-
age can dissipate. Total power dissipation for the device
is calculated using the following equation:
PTOTAL = PC/Q + PDO + P5 + PLDO33 + PQ +
PCLCQ + PCLDI
where PC/Q is the power generated in the C/Q driver,
PDO is the power dissipated by the DO driver, P5 and
PLDO33 are the power generated by the LDOs, PQ is the
quiescent power generated by the devices, 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(max)] × [0.5 + 7 × IC/Q(max)]
Calculate the internal power dissipation of the DO driver
using the following equation:
PDO = [IDO(max)] × [0.5 + 7 × IDO(max)]
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(max) × VCC(max)
If the current sinks are enabled, calculate their associ-
ated power dissipation as:
PCLCQ = ILLM_C/Q(max) × VC/Q(max)
PCLDI = ILLM_DI(max) × VDI(max)
Overtemperature Warning
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
to +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
All regulators and the C/Q and DO output drivers are
automatically switched off when the internal die tempera-
ture exceeds the +150NC (typ) thermal shutdown thresh-
old. SPI communication is not available during a thermal
shutdown event.
Regulators are automatically switched on when the inter-
nal die temperature falls below the thermal shutdown
threshold plus hysteresis. The internal registers return to
their default state when the V5 regulator is switched on.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX14820ETG+ | 功能描述:輸入/輸出控制器接口集成電路 IO-Link Device Transceiver RoHS:否 制造商:Silicon Labs 產品: 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 |
| MAX14820ETG+T | 功能描述:輸入/輸出控制器接口集成電路 IO-Link Device Transceiver RoHS:否 制造商:Silicon Labs 產品: 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 |
| MAX14820EVKIT# | 功能描述:界面開發(fā)工具 MAX14820/21 EVAL KIT RoHS:否 制造商:Bourns 產品: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 |
| MAX14821ETG+ | 功能描述:輸入/輸出控制器接口集成電路 NEW RoHS:否 制造商:Silicon Labs 產品: 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 |
| MAX14821ETG+T | 功能描述:輸入/輸出控制器接口集成電路 NEW RoHS:否 制造商:Silicon Labs 產品: 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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