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參數資料
| 型號： | MAX9928FAUA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 14/14頁 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE 8-UMAX |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 放大器類型： | 電流檢測 |
| 電路數： | 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） |
| 供應商設備封裝： | 8-uMAX |
| 包裝： | 帶卷 (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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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX9928FEVKIT+ | 制造商:Maxim Integrated Products 功能描述:-0.1V TO +28V INPUT RANGE MICROPOW - Boxed Product (Development Kits) |
| MAX9928TAUA+T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX9929FABS+TG45 | 功能描述:電流靈敏放大器 RoHS:否 制造商:Texas Instruments 通道數量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| MAX9929FABT+ | 制造商:Maxim Integrated Products 功能描述:-0.1V TO +28V INPUT RANGE, MICROPOWER, UNI-/BIDIRECTIONAL, - Rail/Tube |
| MAX9929FABT+G45 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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