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参数资料
| 型号： | MAX9934FART+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA6 |
| 封装： | 1 X 1.50 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, UCSP-6 |
| 文件页数： | 1/21页 |
| 文件大小： | 939K |
| 代理商： | MAX9934FART+T |
General Description
The MAX9934 high-precision, low-voltage, high-side
current-sense amplifier is ideal for both bidirectional
(charge/discharge) and unidirectional current measure-
ments in battery-powered portable and laptop devices.
Input offset voltage (VOS) is a low 10V (max) at +25°C
across the -0.1V to 5.5V input common-mode voltage
range, and is independent of VCC. Its precision input
specification allows the use of very small sense volt-
ages (typically ±10mV full-scale) for minimally invasive
current sensing.
The output of the MAX9934 is a current proportional to
input VSENSE and is available in either 25A/mV or
5A/mV gain options (GM) with gain accuracy better
than 0.25% (max) at +25°C. A chip select (CS) allows
multiplexing of several MAX9934 current outputs to a
single microcontroller ADC channel (see the
Typical
Operating Circuit). CS is compatible with 1.8V and 3.3V
logic systems.
The MAX9934 is designed to operate from a 2.5V to
3.6V VCC supply, and draws just 120A (typ) quiescent
current. When powered down (VCC = 0), RS+ and RS-
draw less than 0.1nA (typ) leakage current to reduce
battery load. The MAX9934 is robust and protected
from input faults of up to ±6V input differential voltage
between RS+ and RS-.
The MAX9934 is specified for operation over the -40°C
to +125°C temperature range and is available in an
8-pin MAX or a 6-bump UCSP (1mm x 1.5mm x
0.6mm), making it ideal for space-sensitive applications.
Applications
PDAs and Smartphones
MP3 Players
Sensor Instrumentation Amplifiers
Notebook PCs and Ultra-Mobile PCs
Portable Current Monitoring
Features
Input Offset Voltage: 10V (max)
Gain Error Less than 0.25%
-0.1V to +5.5V Input Common-Mode Voltage
Range
Chip Select Allows Multiplexing Several MAX9934
Current Monitors to One ADC
Current Output Allows ROUT Selection
for Gain Flexibility
Single Supply Operation: 2.5V to 3.6V
Two Gain Options: GM of 25A/mV (MAX9934T)
and 5A/mV (MAX9934F)
Bidirectional or Unidirectional Operation
Small, 6-Bump UCSP (1mm x 1.5mm x 0.6mm)
and 8-Pin MAX Packages
MAX9934
High-Precision, Low-Voltage, Current-Sense Amplifier
with Current Output and Chip Select for Multiplexing
________________________________________________________________
Maxim Integrated Products
1
19-5011; Rev 2; 4/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
Ordering Information
PART
GAIN
PIN-
PACKAGE
TOP
MARK
MAX9934FART+T
5A/mV
6 UCSP
AAG
MAX9934FAUA+T
5A/mV
8 MAX
—
MAX9934TART+T
25A/mV
6 UCSP
AAF
MAX9934TAUA+T
25A/mV
8 MAX
—
Note: All devices are specified over the -40°C to +125°C
extended temperature range.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
MAX is a registered trademark and UCSP is a trademark of
Maxim Integrated Products, Inc.
ILOAD
RSENSE
RS-
RS+
-0.1V
≤ VCM ≤ 5.5V
VCC = 3.3V
VCC
CS
GND
MAX9934
OUT
ROUT
10k
Ω
VOUT TO ADC
FROM
μC
CHIP SELECT
1000pF
0.1
μF
Typical Operating Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9934FAUA+ | 功能描述:电流灵敏放大器 Precision Current Sense Amp 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 |
| MAX9934FAUA+T | 功能描述:电流灵敏放大器 Precision Current Sense Amp 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 |
| MAX9934TALT+T | 功能描述:电流灵敏放大器 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 |
| MAX9934TART+T | 功能描述:电流灵敏放大器 Precision Current Sense Amp 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 |
| MAX9934TAUA+ | 功能描述:电流灵敏放大器 Precision Current Sense Amp 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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