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| 型号： | INA333AIDGKTG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 3/27页 |
| 文件大小： | 0K |
| 描述： | IC INST AMP PREC LOW PWR 8-MSOP |
| 视频文件： | INA333 Zero-Drift Instrumentation Amp |
| 标准包装： | 250 |
| 放大器类型： | 仪表 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.16 V/µs |
| -3db带宽： | 150kHz |
| 电流 - 输入偏压： | 70pA |
| 电压 - 输入偏移： | 10µV |
| 电流 - 电源： | 50µA |
| 电流 - 输出 / 通道： | 40mA |
| 电压 - 电源，单路/双路(±)： | 1.8 V ~ 5.5 V，±0.9 V ~ 2.75 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
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APPLICATION INFORMATION
SETTING THE GAIN
A
1
A
2
A
3
6
150kW
7
4
3
8
1
2
V
IN-
V
IN+
R
G
V+
V-
INA333
G=1+
100kW
R
G
5
RFIFilter
50kW
RFIFilter
Load
V =G
(V
V
-
)
O
IN+
IN-
0.1 F
m
0.1 F
m
+
-
V
O
R
G
Alsodrawninsimplifiedform:
INA333
Ref
V
O
V
IN-
V
IN+
Ref
RFIFilter
www.ti.com ..................................................................................................................................................... SBOS445B – JULY 2008 – REVISED OCTOBER 2008
Figure 32 shows the basic connections required for
Table 1 lists several commonly-used gains and
operation of the INA333. Good layout practice
resistor values. The 100k
term in Equation 1 comes
mandates the use of bypass capacitors placed close
from the sum of the two internal feedback resistors of
to the device pins as shown.
A1 and A2. These on-chip resistors are laser trimmed
to accurate absolute values. The accuracy and
The output of the INA333 is referred to the output
temperature coefficient of these resistors are included
reference
(REF)
terminal,
which
is
normally
in the gain accuracy and drift specifications of the
grounded. This connection must be low-impedance to
INA333.
assure good common-mode rejection. Although 15
or less of stray resistance can be tolerated while
The stability and temperature drift of the external gain
maintaining specified CMRR, small stray resistances
setting resistor, RG, also affects gain. The contribution
of tens of ohms in series with the REF pin can cause
of RG to gain accuracy and drift can be directly
noticeable degradation in CMRR.
inferred from the gain Equation 1. Low resistor values
required for high gain can make wiring resistance
important. Sockets add to the wiring resistance and
contribute additional gain error (possibly an unstable
Gain of the INA333 is set by a single external
gain error) in gains of approximately 100 or greater.
resistor, RG, connected between pins 1 and 8. The
To ensure stability, avoid parasitic capacitance of
more than a few picofarads at the RG connections.
Careful matching of any parasitics on both RG pins
G = 1 + (100k
/RG)
(1)
maintains optimal CMRR over frequency.
Figure 32. Basic Connections
Copyright 2008, Texas Instruments Incorporated
11
Product Folder Link(s): INA333
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相关代理商/技术参数 |
参数描述 |
|---|---|
| INA333AIDRGR | 功能描述:仪表放大器 Lo Pwr Prec Instr Amp RoHS:否 制造商:Texas Instruments 通道数量: 输入补偿电压:150 V 可用增益调整: 最大输入电阻:10 kOhms 共模抑制比（最小值）:88 dB 工作电源电压:2.7 V to 36 V 电源电流:200 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:MSOP-8 封装:Bulk |
| INA333AIDRGT | 功能描述:仪表放大器 Lo Pwr Prec Instr Amp RoHS:否 制造商:Texas Instruments 通道数量: 输入补偿电压:150 V 可用增益调整: 最大输入电阻:10 kOhms 共模抑制比（最小值）:88 dB 工作电源电压:2.7 V to 36 V 电源电流:200 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:MSOP-8 封装:Bulk |
| INA333-HT | 制造商:TI 制造商全称:Texas Instruments 功能描述:Micro-Power, Zer?-Drift, Rail-to-Rail Out Instrumentation Amplifier |
| INA333SHKJ | 功能描述:仪表放大器 Low Pwr,Prec Instr Amp RoHS:否 制造商:Texas Instruments 通道数量: 输入补偿电压:150 V 可用增益调整: 最大输入电阻:10 kOhms 共模抑制比（最小值）:88 dB 工作电源电压:2.7 V to 36 V 电源电流:200 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:MSOP-8 封装:Bulk |
| INA333SHKQ | 功能描述:仪表放大器 Low Power,Prec Instr Amp RoHS:否 制造商:Texas Instruments 通道数量: 输入补偿电压:150 V 可用增益调整: 最大输入电阻:10 kOhms 共模抑制比（最小值）:88 dB 工作电源电压:2.7 V to 36 V 电源电流:200 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:MSOP-8 封装:Bulk |
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