- 您现在的位置：买卖IC网 > PDF目录382611 > TLV2461MU (Texas Instruments, Inc.) FAMILY OF LOW POWER RAIL TO RAIL INPUT/OUTPUT OPERATIOANAL AMPLIFIERS WITH SHUTDOWN PDF资料下载
参数资料
| 型号： | TLV2461MU |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | FAMILY OF LOW POWER RAIL TO RAIL INPUT/OUTPUT OPERATIOANAL AMPLIFIERS WITH SHUTDOWN |
| 中文描述： | 家庭的低功耗轨到轨输入/输出OPERATIOANAL放大器，带关断 |
| 文件页数： | 27/56页 |
| 文件大小： | 1027K |
| 代理商： | TLV2461MU |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页当前第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页
TLV2460, TLV2461, TLV2462, TLV2463, TLV2464, TLV2465, TLV246xA
FAMILY OF LOW-POWER RAIL-TO-RAIL INPUT/OUTPUT
OPERATIONAL AMPLIFIERS WITH SHUTDOWN
SLOS220I
–
JULY 1998
–
REVISED MARCH 2001
27
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
shutdown function
Three members of the TLV246x family (TLV2460/3/5) have a shutdown terminal for conserving battery life in
portable applications. When the shutdown terminal is tied low, the supply current is reduced to 0.3
μ
A/channel,
the amplifier is disabled, and the outputs are placed in a high impedance mode. To enable the amplifier, the
shutdown terminal can either be left floating or pulled high. When the shutdown terminal is left floating, care
should be taken to ensure that parasitic leakage current at the shutdown terminal does not inadvertently place
the operational amplifier into shutdown. The shutdown terminal threshold is always referenced to V
DD
/2.
Therefore, when operating the device with split supply voltages (e.g.
±
2.5 V), the shutdown terminal needs to
be pulled to V
DD
–
(not GND) to disable the operational amplifier.
The amplifier
’
s output with a shutdown pulse is shown in Figures 22, 23, 24, and 25. The amplifier is powered
with a single 5-V supply and configured as a noninverting configuration with a gain of 5. The amplifier turnon
and turnoff times are measured from the 50% point of the shutdown pulse to the 50% point of the output
waveform. The times for the single, dual, and quad are listed in the data tables.
circuit layout considerations
To achieve the levels of high performance of the TLV246x, follow proper printed-circuit board design techniques.
A general set of guidelines is given in the following.
Ground planes
–
It is highly recommended that a ground plane be used on the board to provide all
components with a low inductive ground connection. However, in the areas of the amplifier inputs and
output, the ground plane can be removed to minimize the stray capacitance.
Proper power supply decoupling
–
Use a 6.8-
μ
F tantalum capacitor in parallel with a 0.1-
μ
F ceramic
capacitor on each supply terminal. It may be possible to share the tantalum among several amplifiers
depending on the application, but a 0.1-
μ
F ceramic capacitor should always be used on the supply terminal
of every amplifier. In addition, the 0.1-
μ
F capacitor should be placed as close as possible to the supply
terminal. As this distance increases, the inductance in the connecting trace makes the capacitor less
effective. The designer should strive for distances of less than 0.1 inches between the device power
terminals and the ceramic capacitors.
Sockets
–
Sockets can be used but are not recommended. The additional lead inductance in the socket pins
will often lead to stability problems. Surface-mount packages soldered directly to the printed-circuit board
is the best implementation.
Short trace runs/compact part placements
–
Optimum high performance is achieved when stray series
inductance has been minimized. To realize this, the circuit layout should be made as compact as possible,
thereby minimizing the length of all trace runs. Particular attention should be paid to the inverting input of
the amplifier. Its length should be kept as short as possible. This will help to minimize stray capacitance at
the input of the amplifier.
Surface-mount passive components
–
Using surface-mount passive components is recommended for high
performance amplifier circuits for several reasons. First, because of the extremely low lead inductance of
surface-mount components, the problem with stray series inductance is greatly reduced. Second, the small
size of surface-mount components naturally leads to a more compact layout thereby minimizing both stray
inductance and capacitance. If leaded components are used, it is recommended that the lead lengths be
kept as short as possible.
相关PDF资料 |
PDF描述 |
|---|---|
| TLV2460AMFK | FAMILY OF LOW POWER RAIL TO RAIL INPUT/OUTPUT OPERATIOANAL AMPLIFIERS WITH SHUTDOWN |
| TLV2460AMJG | FAMILY OF LOW POWER RAIL TO RAIL INPUT/OUTPUT OPERATIOANAL AMPLIFIERS WITH SHUTDOWN |
| TLV2460AMU | FAMILY OF LOW POWER RAIL TO RAIL INPUT/OUTPUT OPERATIOANAL AMPLIFIERS WITH SHUTDOWN |
| TLV2462AMU | FAMILY OF LOW POWER RAIL TO RAIL INPUT/OUTPUT OPERATIOANAL AMPLIFIERS WITH SHUTDOWN |
| TLV2462Y | FAMILY OF LOW-POWER RAIL-TO-RAIL INPUT/OUTPUT OPERATIONAL AMPLIFIERS WITH SHUTDOWN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV2461QD | 功能描述:运算放大器 - 运放 Single Low Power Rail-to-Rail I/O RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLV2461QDG4 | 功能描述:运算放大器 - 运放 Sgl Lo Pwr Rail to Rail Input/Output RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLV2461QDR | 功能描述:运算放大器 - 运放 Single Low Power Rail-to-Rail I/O RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLV2461QDRG4 | 功能描述:运算放大器 - 运放 Sgl Lo Pwr Rail to Rail Input/Output RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLV2461QDRG4Q1 | 功能描述:运算放大器 - 运放 Auto Cat Lo-Pwr Rail to Rail Input/Output RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。