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参数资料
型号： MAX4080TAUA/V+T
厂商： Maxim Integrated Products
文件页数： 3/14页
文件大小： 0K
描述： IC AMP CURRENT SENSE 8UMAX
标准包装： 2,500
放大器类型： 电流检测
电路数： 1
增益带宽积： 250kHz
电流 - 输入偏压： 5µA
电压 - 输入偏移： 100µV
电流 - 电源： 75µA
电压 - 电源，单路/双路(±)： 4.5 V ~ 76 V
工作温度： -40°C ~ 125°C
安装类型： 表面贴装
封装/外壳： 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）
供应商设备封装： 8-uMAX
包装： 带卷 (TR)
76V, High-Side, Current-Sense Amplifiers with
Voltage Output
Table 1. Typical Component Values
FULL-SCALE LOAD
CURRENT, ILOAD (A)
CURRENT-SENSE
RESISTOR (m
)
GAIN
(V/V)
FULL-SCALE
VSENSE
(mV)
MAX4081 FULL-SCALE
OUTPUT VOLTAGE
(VOUT - VREF, V)
0.500
1000
5
±500
±2.5
0.125
1000
20
±125
±2.5
0.050
1000
60
±50
±3.0
5.000
100
5
±500
±2.5
1.250
100
20
±125
±2.5
0.500
100
60
±50
±3.0
50.000
10
5
±500
±2.5
12.500
10
20
±125
±2.5
5.000
10
60
±50
±3.0
FULL-SCALE LOAD
CURRENT, ILOAD (A)
CURRENT-SENSE
RESISTOR (m
)
GAIN
(V/V)
FULL-SCALE
VSENSE
(mV)
MAX4080 FULL-SCALE
OUTPUT VOLTAGE (V)
1.000
1000
5
1000
5.0
0.250
1000
20
250
5.0
0.100
1000
60
100
6.0
10.000
100
5
1000
5.0
2.500
100
20
250
5.0
1.000
100
60
100
6.0
50.000
10
5
500
2.5
25.000
10
20
250
5.0
10.000
10
60
100
6.0
External References (MAX4081)
For the bidirectional MAX4081, the VOUT reference level
is controlled by REF1A and REF1B. VREF is defined as
the average voltage of VREF1A and VREF1B. Connect
REF1A and REF1B to a low-noise, regulated voltage
source to set the output reference level. In this mode,
VOUT equals VREF1A when VSENSE equals zero (see
Figure 4).
Alternatively, connect REF1B to ground, and REF1A to a
low-noise, regulated voltage source. In this case, the out-
put reference level (VREF) is equal to VREF1A divided by
two. VOUT equals VREF1A/2 when VSENSE equals zero.
In either mode, the output swings above the reference
voltage for positive current-sensing (VRS+ > VRS-). The
output swings below the reference voltage for negative
current-sensing (VRS+ < VRS-).
Applications Information
Recommended Component Values
Ideally, the maximum load current develops the full-
scale sense voltage across the current-sense resistor.
Choose the gain needed to yield the maximum output
voltage required for the application:
VOUT = VSENSE AV
where VSENSE is the full-scale sense voltage, 1000mV
for gain of 5V/V, 250mV for gain of 20V/V, 100mV for
gain of 60V/V, and AV is the gain of the device.
In applications monitoring a high current, ensure that
RSENSE is able to dissipate its own I2R loss. If the resis-
tor’s power dissipation is exceeded, its value may drift
or it may fail altogether.
The MAX4080/MAX4081 sense a wide variety of cur-
rents with different sense-resistor values. Table 1 lists
common resistor values for typical operation.
MAX4080/MAX4081
Maxim Integrated
11
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MAX4080TAUV 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:76V, High-Side, Current-Sense Amplifiers with Voltage Output
MAX4081 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:76V, High-Side, Current-Sense Amplifiers with Voltage Output
MAX4081FASA 功能描述:电流灵敏放大器 76V High-Side Crnt Sense Amp w/V Out RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
MAX4081FASA+ 功能描述:电流灵敏放大器 76V High-Side Crnt Sense Amp w/V Out RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
MAX4081FASA+T 功能描述:电流灵敏放大器 76V High-Side Crnt Sense Amp w/V Out RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
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