VOUT = (+IN) – (–IN) + V
參數(shù)資料
型號(hào)： INA149AIDR
廠商： Texas Instruments
文件頁(yè)數(shù)： 5/26頁(yè)
文件大?。?/td> 0K
描述： IC AMP UNITY GAIN DIFF 8SOIC
特色產(chǎn)品： INA149 Difference Amplifier
標(biāo)準(zhǔn)包裝： 1
放大器類型： 差分
電路數(shù)： 1
轉(zhuǎn)換速率： 5 V/µs
-3db帶寬： 500kHz
電壓 - 輸入偏移： 350µV
電流 - 電源： 810µA
電流 - 輸出 / 通道： 25mA
電壓 - 電源，單路/雙路(±)： 4 V ~ 36 V，±2 V ~ 18 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： 296-30028-6
+
20 k
380 k
19 k
30 V
1 F
GND
4
7
2
3
1
6
5
IN
+IN
VOUT = (+IN) – (–IN) + VREF
VREF
100 nF
+
20 k
380 k
19 k
15 V
1 F
15 V
1 F
GND
4
7
2
3
1
6
5
IN
+IN
VOUT = (+IN) (IN)
100 nF
SBOS579B – SEPTEMBER 2011 – REVISED JULY 2012
APPLICATION INFORMATION
BASIC INFORMATION
Figure 43 shows the basic connections required for dual-supply operation. Applications with noisy or high-
impedance power-supply lines may require decoupling capacitors placed close to the device pins. The output
voltage is equal to the differential input voltage between pins 2 and 3. The common-mode input voltage is
rejected. Figure 44 shows the basic connections required for single-supply operation.
Figure 43. Basic Power and Signal Connections for Figure 44. Basic Power and Signal Connections for
Dual-Supply Operation
Single-Supply Operation
TRANSFER FUNCTION
Most applications use the INA149 as a simple unity-gain difference amplifier. The transfer function is given in
VOUT = (+IN) – (–IN)
(1)
Some applications, however, apply voltages to the reference terminals (REFA and REFB). The complete transfer
function is given in Equation 2:
VOUT = (+IN) – (–IN) + 20 × REFA – 19 × REFB
(2)
COMMON-MODE RANGE
The high common-mode range of the INA149 is achieved by dividing down the input signal with a high precision
resistor divider. This resistor divider brings both the positive input and the negative input within the input range of
the internal operational amplifier. This input range depends on the supply voltage of the INA149.
Both Figure 2 and Figure 3 can be used to determine the maximum common-mode range for a specific supply
voltage. The maximum common-mode range can also be calculated by ensuring that both the positive and the
negative input of the internal amplifier are within 1.5 V of the supply voltage.
In case the voltage at the inputs of the internal amplifier exceeds the supply voltage, the internal ESD diodes
start conducting current. This current must be limited to 10 mA to make sure not to exceed the absolute
maximum ratings for the device.
Copyright 2011–2012, Texas Instruments Incorporated
13
Product Folder Link(s): INA149
相關(guān)PDF資料
PDF描述
5-146851-1 CONN HEADER VERT DUAL .100 TIN
68685-411 CONN RCPT 11POS .100" SNG ROW
0713085690 CONN SMD BKWY HDR TIN 90POS
69154-204LF CONN RCPT 8POS .100" DBL SMD
929842-01-07-RB CONN RCPT 14POS DL STR .1" GO
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
INA149AMDREP 功能描述:差分放大器 EP High Common Mode Vltg Diff Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補(bǔ)償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel
INA149-EP 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER
INA149EVM 功能描述:放大器 IC 開(kāi)發(fā)工具 INA149 Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
INA152 制造商:BB 制造商全稱:BB 功能描述:Single-Supply DIFFERENCE AMPLIFIER
INA152EA 制造商:Texas Instruments 功能描述:IC AMP DIFF SMD VSSOP8 152
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*