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參數資料
| 型號： | AD8214WYRMZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 10/16頁 |
| 文件大小： | 240K |
| 描述： | IC CURRENT SHUNT COMP OUT 8MSOP |
| 標準包裝： | 50 |
| 功能： | 電流監控器 |
| 檢測方法： | 高端 |
| 輸入電壓： | 5 V ~ 65 V |
| 電流 - 輸出： | 1mA |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | * |
| 封裝/外殼： | * |
| 供應商設備封裝： | * |
| 包裝： | * |
AD8214
Data Sheet
Rev. A | Page 10 of 16
THEORY OF OPERATION
The AD8214 is a high voltage comparator offering an input-to-
output response time of less than 100 ns. This device is ideal for
detecting overcurrent conditions on the high side of the control
loop. The AD8214 is designed specifically to facilitate and allow
for fast shutdown of the control loop, preventing damage due to
excessive currents to the FET, load, or shunt resistor.
The AD8214 operates with a supply of 5 V to 65 V. It combines
a fast comparator, optimized for high side operation, with a
2.4 V series voltage regulator. The regulator provides a stable
voltage that is negative with respect to the positive supply rail,
and it is intended to provide power to the internal electronics,
set a comparison threshold below the supply rail, and power
small application circuits used with the comparator.
The differential input of the comparator may be operated at, or
slightly above or below, the positive supply rail. Typically, one of
the comparator inputs is driven negative with respect to the
positive supply by a small series resistor carrying the main
supply current to the load. The other input of the comparator
connects to a voltage divider across the regulator, so the
comparator trips as the voltage across the series resistor crosses
the user-selected threshold.
The AD8214 features a current output. The current is low (100 nA
typical), until the user selected threshold is crossed. After this point
the output switches to high (1 mA typical). The current output
driver complies with load voltage from 0 V to (VS 2.4 V). The
current easily drives a ground referenced resistor to develop logic
levels determined by the value of the load resistor.
The comparator input is balanced to switch as the inverting
input (IN) is driven negative with respect to the noninverting
input (+IN). As the comparator output switches from 0 mA to
1 mA, a small hysteresis (10 mV) is activated to minimize the
effects of noise in the system that may be triggered by the
comparator signal. This means that to restore the output to zero,
the input polarity must be reversed by 10 mV beyond the
original threshold.
1
3
2
BATTERY
SHUNT
TO LOAD
+
_
CONSTANT
THRESHOLD
VOLTAGE DROP
ACROSS SHUNT
CORRESPONDING
O CURRENT LEVEL
+
_
R1
R2
2.4V
REGULATOR
1
3
6
5
8
2
CONSTANT
2.4V
UP TO 65V
I
Figure 28. Simplified Schematic
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| AD8214WYRMZ-R7 | 功能描述:IC CURRENT SHUNT COMP OUT 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩流/電流管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 功能:電流開關 檢測方法:- 精確度:±10% 輸入電壓:1.7 V ~ 5.5 V 電流 - 輸出:600mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
| AD8214WYRMZ-RL | 功能描述:IC CURRENT SHUNT COMP OUT 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩流/電流管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 功能:電流開關 檢測方法:- 精確度:±10% 輸入電壓:1.7 V ~ 5.5 V 電流 - 輸出:600mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
| AD8215 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Voltage, Curren Shunt Monitor |
| AD8215_11 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Voltage, Current Shunt Monitor |
| AD8215WYRZ | 功能描述:IC CURRENT MONITOR 0.15% 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩流/電流管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 功能:電流開關 檢測方法:- 精確度:±10% 輸入電壓:1.7 V ~ 5.5 V 電流 - 輸出:600mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
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