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参数资料
| 型号： | THS4281DGKRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封装： | GREEN, PLASTIC, MSOP-8 |
| 文件页数： | 1/37页 |
| 文件大小： | 1063K |
| 代理商： | THS4281DGKRG4 |
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+
100
2.5
ADS8320
10 nF
500
V BAT
Load
+IN
IN
V OUT = I RSENSE
0.2
I
RSENSE
THS4281
470 pF
VBAT
W
kW
W
2.5 kW
500 W
W
VBAT/2
High-Side, Low Power Current-Sensing System
www.ti.com
SLOS432A – APRIL 2004 – REVISED NOVEMBER 2009
VERY LOW-POWER, HIGH-SPEED, RAIL-TO-RAIL INPUT AND OUTPUT
VOLTAGE-FEEDBACK OPERATIONAL AMPLIFIER
Check for Samples: THS4281
1
FEATURES
DESCRIPTION
23
Very Low Quiescent Current: 750
μA (at 5 V)
Rail-to-Rail Input and Output:
Fabricated using the BiCom-II process, the THS4281
is
a
low-power,
rail-to-rail
input
and
output,
–
Common-Mode Input Voltage Extends
voltage-feedback operational amplifier designed to
400 mV Beyond the Rails
operate over a wide power-supply range of 2.7-V to
–
Output Swings Within 150 mV From the
15-V single supply, and ±1.35-V to ±7.5-V dual
Rails
supply. Consuming only 750
μA with a unity gain
bandwidth of 90 MHz and a high 35-V/
μs slew rate,
Wide –3-dB Bandwidth at 5 V:
the THS4281 allows portable or other power-sensitive
–
90 MHz at Gain = +1, 40 MHz at Gain = +2
applications to realize high performance with minimal
High Slew Rate: 35 V/
μs
power. To ensure long battery life in portable
applications, the quiescent current is trimmed to be
Fast Settling Time (2-V Step):
less than 900
μA at +25°C, and 1 mA from –40°C to
–
78 ns to 0.1%
+85°C.
–
150 ns to 0.01%
The THS4281 is a true single-supply amplifier with a
Low Distortion at Gain = +2, VO = 2-VPP, 5 V:
specified common-mode input range of 400 mV
–
–91 dBc at 100 kHz, –67 dBc at 1 MHz
beyond the rails. This allows for high-side current
sensing
applications
without
phase
reversal
Input Offset Voltage: 2.5 mV (Max at +25°C)
concerns. Its output swings to within 40 mV from the
Output Current > 30 mA (10-
Load, 5 V)
rails with 10-k
loads, and 150 mV from the rails with
Low Voltage Noise of 12.5 nV/
√Hz
1-k
loads.
Supply Voltages: +2.7 V, 3 V, +5 V, ±5 V, +15 V
The THS4281 has a good 0.1% settling time of 78 ns,
Packages: SOT23, MSOP, and SOIC
and 0.01% settling time of 150 ns. The low THD of
–87 dBc at 100 kHz, coupled with a maximum offset
APPLICATIONS
voltage of less than 2.5 mV, makes the THS4281 a
good match for high-resolution ADCs sampling less
Portable/Battery-Powered Applications
than 2 MSPS.
High Channel Count Systems
ADC Buffer
The THS4281 is offered in a space-saving SOT23-5
package, a small MSOP-8 package, and the industry
Active Filters
standard SOIC-8 package.
Current Sensing
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
FilterPro is a trademark of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2004–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| THS4281DR | 功能描述:高速运算放大器 Very Lo-Pwr R-To-R I/O Voltage Feedback RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| THS4281DRG4 | 功能描述:高速运算放大器 Very Lo-Pwr R-To-R I/O Voltage Feedback RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| THS4281EVM | 功能描述:放大器 IC 开发工具 THS4281 Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| THS4302 | 制造商:TI 制造商全称:Texas Instruments 功能描述:WIDEBAND FIXED-GAIN AMPLIFIER |
| THS4302EVM | 功能描述:放大器 IC 开发工具 THS4302 Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
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