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| 型号： | MAX9923TEUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE 10-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| 转换速率： | 0.4 V/µs |
| -3db带宽： | 50kHz |
| 电流 - 输入偏压： | 1pA |
| 电压 - 输入偏移： | 0.2µV |
| 电流 - 电源： | 780µA |
| 电压 - 电源，单路/双路(±)： | 2.85 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
MAX9922/MAX9923
Ultra-Precision, High-Side
Current-Sense Amplifiers
10
______________________________________________________________________________________
Detailed Description
The MAX9922/MAX9923 high-side, current-sense
amplifiers implement a spread-spectrum autozeroing
technique that minimizes the input offset error, offset
drift over time and temperature, and the effect of 1/f
noise. This technique achieves less than 25V (max)
offset voltage.
The MAX9922/MAX9923 high-side current-sense ampli-
fiers feature a +1.9V to +28V input common-mode
range that is independent of supply voltage (VDD). This
feature allows the monitoring of current out of a battery
as low as +1.9V and enables high-side current sensing
at voltages greater than the supply voltage.
The MAX9922/MAX9923 monitor current through a cur-
rent-sense resistor and amplify the voltage across the
resistor. The 28V input common-mode voltage (VRS+)
range of the MAX9922/MAX9923 is independent of the
supply voltage (VDD). High-side current monitoring
does not interfere with the ground path of the load
being measured, making the MAX9922/MAX9923 par-
ticularly useful in a wide range of high-voltage systems.
The MAX9922/MAX9923 use Maxim’s indirect current
feedback achitecture. This architecture con-
verts the differential input voltage signal to a current
through an input transconductance stage. An output
transconductance stage converts a portion of the output
voltage (equal to the output voltage divided by the
gain) into another precision current. These two currents
are subtracted and the result is fed to a loop amplifier
with sufficient gain to minimize errors (see the
Functional Diagrams.)
Battery-powered systems require a precise bidirection-
al current-sense amplifier to accurately monitor the bat-
tery’s charge and discharge currents. Measurements of
OUT with respect to VREF yield a positive and negative
voltage during charge and discharge cycles (Figure 1).
The MAX9922 allows adjustable gain with a pair of exter-
nal resistors between OUT, FB, and REF. The MAX9923T/
MAX9923H/MAX9923F use laser-trimmed internal resis-
tors for fixed gains of 25, 100, and 250, respectively, with
0.5% gain accuracy (see the
Functional Diagrams.)
Functional Diagrams
MAX9922
RSB
1
RS-
RS+
2
3
N.C.
4
GND
5
VDD
10
R2
R1
OUT
FB
REF
9
8
7
SHDN
6
GAIN = 1 +
(
R2 )
R1
MAX9923
RSB
1
RS-
RS+
2
3
N.C.
4
GND
5
VDD
10
R2
R1
SHDN
6
OUT
9
FB
8
REF
7
MAX9923
VERSION
GAIN
T25
H
100
F
250
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9923TEUB+ | 功能描述:电流灵敏放大器 Current-Sense Amplifier 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 |
| MAX9923TEUB+T | 功能描述:电流灵敏放大器 Current-Sense Amplifier 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 |
| MAX9924UAUB/V+ | 功能描述:接口 - 专用 Variable-Reluctance Sensor Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX9924UAUB/V+T | 功能描述:接口 - 专用 Variable-Reluctance Sensor Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX9924UAUB+ | 功能描述:接口 - 专用 Variable-Reluctance Sensor Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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