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参数资料
| 型号： | MAX9929FAUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/14页 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| -3db带宽： | 150kHz |
| 电流 - 输入偏压： | 1.6µA |
| 电压 - 输入偏移： | 6000µV |
| 电流 - 电源： | 20µA |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 5.5 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) |
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9929TABS+TG45 | 制造商:Maxim Integrated Products 功能描述:0V TO 28V CMR ISENSE - Tape and Reel |
| MAX9929TAUA+T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX992EKA | 制造商:Maxim Integrated Products 功能描述:HIGH-SPEED MICROPOWER LOW-VOLTAGE - Cut Tape Product |
| MAX992EKA+ | 制造商:Maxim Integrated Products 功能描述:COMPARATOR DUAL R-R I/O 2.75V/5.5V 8PIN SOT-23 - Rail/Tube |
| MAX992EKA+T | 功能描述:校验器 IC Dual uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
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