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參數(shù)資料
| 型號： | AD8215WYRZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 227K |
| 描述： | IC CURRENT MONITOR 0.15% 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 98 |
| 功能： | 電流監(jiān)控器 |
| 檢測方法： | 高/低端 |
| 精確度： | ±0.15% |
| 輸入電壓： | -2 V ~ 65 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 托盤 |
AD8215
Data Sheet
Rev. A | Page 12 of 16
APPLICATIONS INFORMATION
HIGH-SIDE CURRENT SENSING WITH A LOW-SIDE
SWITCH
In such load control configurations, the PWM-controlled
switch is ground referenced. An inductive load (solenoid) is tied
to a power supply. A resistive shunt is placed between the switch
and the load (see Figure 28). An advantage of placing the shunt on
the high side is that the entire current, including the recirculation
current, can be measured because the shunt remains in the loop
when the switch is off. In addition, diagnostics can be enhanced
because shorts to ground can be detected with the shunt on the
high side. In this circuit configuration, when the switch is
closed, the common-mode voltage moves down to near the
negative rail. When the switch is opened, the voltage reversal
across the inductive load causes the common-mode voltage to
be held one diode drop above the battery by the clamp diode.
INDUCTIVE
LOAD
CLAMP
DIODE
SHUNT
SWITCH
ATTERY
5
4
5V
8
7
6
2
3
5
1
4
NC
V+
IN+
IN
OUT
NC
NC
GND
AD8215
Figure 28. Low-Side Switch
HIGH-SIDE CURRENT SENSING
In this configuration, the shunt resistor is referenced to the
battery. High voltage is present at the inputs of the current sense
amplifier. In this mode, the recirculation current is again measured
and shorts to ground can be detected. When the shunt is battery
referenced, the AD8215 produces a linear ground-referenced
analog output. An AD8214 can also be used to provide an over-
current detection signal in as little as 100 ns (see Figure 29).
This feature is useful in high current systems where fast
shutdown in over-current conditions is essential.
5
4
5V
INDUCTIVE
LOAD
CLAMP
DIODE
SHUNT
SWITCH
BATTERY
1
2
3
4
8
7
6
5
AD8214
GND NC
IN
OUT
V
REG
+IN
V
S
NC
OVERCURRENT
ETECTION (<100ns)
5
6
7
3
2
8
4
1
NC
V+
IN+
IN
OUT
NC NC GND
AD8215
Figure 29. Battery-Referenced Shunt Resistor
LOW-SIDE CURRENT SENSING
In systems where low-side current sensing is preferred, the
AD8215 provides an integrated solution with great accuracy.
Ground noise is rejected, CMRR is typically higher than 90 dB,
and output linearity is not compromised, regardless of the input
differential voltage.
INDUCTIVE
LOAD
CLAMP
DIODE
SHUNT
BATTERY
SWITCH
5
4
5V
5
6
7
3
2
8
4
1
NC
V+
IN+
IN
OUT
NC NC GND
AD8215
Figure 30. Ground-Referenced Shunt Resistor
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| AD8215WYRZ-R7 | 功能描述:IC CURRENT MONITOR 0.15% 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)流/電流管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 功能:電流開關(guān) 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(yīng)商設(shè)備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
| AD8215WYRZ-RL | 功能描述:IC CURRENT MONITOR 0.15% 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)流/電流管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 功能:電流開關(guān) 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(yīng)商設(shè)備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
| AD8215YRZ | 功能描述:IC CURRENT MONITOR 0.15% 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)流/電流管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 功能:電流開關(guān) 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(yīng)商設(shè)備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
| AD8215YRZ-R7 | 功能描述:IC CURRENT MONITOR 0.15% 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)流/電流管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 功能:電流開關(guān) 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(yīng)商設(shè)備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
| AD8215YRZ-RL | 功能描述:IC CURRENT MONITOR 0.15% 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)流/電流管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 功能:電流開關(guān) 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(yīng)商設(shè)備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
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