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參數資料
| 型號： | MAX3538 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 寬帶可變增益放大器 |
| 中文描述： | 寬帶可變增益放大器 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 652K |
| 代理商： | MAX3538 |
AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX4069–MAX4072 low-cost, bidirectional, high-
side, current-sense amplifiers are ideal for monitoring
battery charge and discharge currents in notebooks,
cell phones, and other portable equipment. They fea-
ture up to 24V input common-mode voltage range, low
100A supply current (which drops to only 10A in
shutdown), and a total output error of less than 1.5%.
The wide 1.35V to 24V input common-mode range is
independent of the supply voltage, ensuring that the
current-sense feedback remains accurate even when
connected to a battery pack in deep discharge.
To achieve maximum flexibility, an external current-sense
resistor is used along with a Gain Select pin to choose
either 50V/V or 100V/V. A single output pin continuously
monitors the transition from charge to discharge and
avoids the need for a separate polarity output. The
MAX4070 contains an internal 2.5V reference. The
charging current is represented by an output voltage
from 2.5V to VCC, while discharge current is given from
2.5V to GND. The MAX4071 is similar, but with a refer-
ence voltage of 1.5V. The MAX4069 has an adjustable
reference voltage, set by two external resistors. The
MAX4072 has an input for an external reference.
The MAX4069/MAX4071/MAX4072 operate from a 2.7V to
24V single supply. The MAX4070 operates from a 3.6V to
24V single supply. All devices are specified over the
automotive operating temperature range, -40°C to
+125°C. The MAX4070/MAX4071/MAX4072 are available
in 8-pin MAX and 8-pin thin QFN packages. The
MAX4069 is available in a 10-pin MAX package.
Applications
Notebook Fuel Gauging
Smart-Battery Packs/Chargers
Motor Control
Power-Management Systems
Cell-Phone Battery-Current Monitoring
Features
Bidirectional, Compact, Current-Sense Solution
Total Output Error Less than 1.5%
Selectable Gain of 50V/V or 100V/V
Wide 1.35V to 24V Common-Mode Range
Independent of Supply Voltage
2.7V to 24V Single-Supply Operation
Internal Precision Reference
Adjustable (MAX4069)
2.50V (MAX4070)
1.50V (MAX4071)
Low 100A Supply Current
10A Supply Current in Shutdown
Available in Space-Saving Packages
8-Pin Thin QFN (MAX4070/MAX4071/MAX4072)
8-Pin MAX (MAX4070/MAX4071MAX4072)
10-Pin MAX (MAX4069)
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
Ordering Information
MAX4070
VBATT = 1.35V TO 24V
VCC = 3.6V TO 24V
FROM BATTERY
CHARGER
RSENSE
LOAD
TO ADC
2.5V
VCC
GSEL
GND
RS-
RS+
REFOUT
OUT
SHDN
Typical Operating Circuit
PART
TEMP RANGE
PIN-PACKAGE
TOP
MARK
MAX4069
AUB -40°C to +125°C 10 MAX
—
MAX4070
AUA -40°C to +125°C 8 MAX
—
MAX4070ATA
-40°C to +125°C 8 Thin QFN-EP*
ABN
MAX4071
AUA -40°C to +125°C 8 MAX
—
MAX4071ATA
-40°C to +125°C 8 Thin QFN-EP*
ABO
MAX4072
AUA -40°C to +125°C 8 MAX
—
MAX4072ATA
-40°C to +125°C 8 Thin QFN-EP*
ABP
Pin Configurations and Selector Guide appear at end of
data sheet.
*
EP = Exposed pad.
MAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
19-2423; Rev 3; 11/08
MAX4069–MAX4072
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| MAX3538UTC+ | 功能描述:射頻放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點:37.5 dBm 功率增益類型:32 dB 噪聲系數:0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
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