參數(shù)資料
型號: MAX9928FAUA+
廠商: Maxim Integrated Products
文件頁數(shù): 14/14頁
文件大小: 0K
描述: IC AMP CURRENT SENSE 8-UMAX
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 50
放大器類型: 電流檢測
電路數(shù): 1
-3db帶寬: 150kHz
電流 - 輸入偏壓: 1.6µA
電壓 - 輸入偏移: 600µV
電流 - 電源: 20µA
電壓 - 電源,單路/雙路(±): 2.5 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-uMAX
包裝: 管件
產(chǎn)品目錄頁面: 1392 (CN2011-ZH PDF)
MAX9928/MAX9929
-0.1V to +28V Input Range, Micropower,
Uni-/Bidirectional, Current-Sense Amplifiers
_______________________________________________________________________________________
9
For both positive and negative VSENSE voltages, the
current flowing out of the current mirror is equal to:
IOUT = M x |VSENSE|/RG1
For the MAX9928F, the transconductance of the device
is trimmed so that IOUT/|VSENSE| = 5A/mV. For the
MAX9929F, the voltage gain of the device is trimmed
so that VOUT/|VSENSE| = 50V/V. The SIGN output from
the comparator indicates the polarity of VSENSE.
Current Output (MAX9928F)
The output voltage equation for the MAX9928_ is given
below:
VOUT = (RSENSE x ILOAD) x (Gm X ROUT)
where VOUT = the desired full-scale output voltage,
ILOAD = the full-scale current being sensed, RSENSE =
the current-sense resistor, ROUT = the voltage-setting
resistor, and Gm = MAX9928F transconductance
(5A/mV).
The full-scale output voltage range can be set by
changing the ROUT resistor value. The above equation
can be modified to determine the ROUT required for a
particular full-scale range:
ROUT = (VOUT)/(ILOAD x RSENSE x Gm)
OUT is a high-impedance current source and can drive
an unlimited amount of capacitance.
CURRENT
MIRROR
MAX9928F
MAX9929F
C
S2
S1
Q1
Q2
10k
Ω*
SIGN
OUT
VCC
VIN
-0.1V TO +28V
(VBATT)
R
SENSE
V
SENSE
+
-
2.5V TO 5.5V
RG1
80k
Ω
RG2
80k
Ω
RC2
80k
Ω
RC1
80k
Ω
RS-
RS+
TO
LOAD/CHARGER
TO ADC
TO
μC
*INTERNAL 10k
Ω RESISTOR FOR MAX9929_ ONLY.
GND
A
VCC
1M
Ω
Figure 1. Functional Diagram
0
-1.2
-1.8
-3.0
3.0
2.0
1.0
0
-1.2
-1.8
-3.0
3.0
2.0
1.0
VSENSE (mV)
SIGN
I OUT
(V
OUT
)
( ) FOR THE MAX9929F.
Figure 2. Ideal Transfer Characteristics with 0mV Amplifier Input
Offset Voltage and -1mV Comparator Input Offset Voltage
相關(guān)PDF資料
PDF描述
MAX9929FAUA+ IC AMP CURRENT SENSE 8-UMAX
MAX4072AUA+ IC AMP CURRENT SENSE 8-UMAX
BK/AGC-6/10-R FUSE 6/10A 250V FAST AGC GLASS
BK/AGC-8/10-R FUSE 8/10A 250V FAST AGC GLASS
BK/AGC-6-1/4-R FUSE 6-1/4A 250V FAST AGC GLASS
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