Datasheet > INA111AU/1K

INA111AU/1K

更新时间： 2024-01-22 21:47:52

品牌	Logo	应用领域
BB		仪表放大器光电二极管
页数	文件大小	规格书
14页	242K
描述
High Speed FET-Input INSTRUMENTATION AMPLIFIER

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

INA111AU/1K 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOIC-16	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	Factory Lead Time：	1 week
风险等级：	5.12	放大器类型：	INSTRUMENTATION AMPLIFIER
最大平均偏置电流 (IIB)：	0.00002 µA	标称带宽 (3dB)：	2 MHz
最小共模抑制比：	75 dB	最大输入失调电流 (IIO)：	0.00001 µA
最大输入失调电压：	6000 µV	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e4	长度：	10.3 mm
湿度敏感等级：	3	负供电电压上限：	-18 V
标称负供电电压 (Vsup)：	-15 V	最大非线性：	0.04%
功能数量：	1	端子数量：	16
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP16,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	包装方法：	TR
峰值回流温度（摄氏度）：	260	电源：	+-15 V
认证状态：	Not Qualified	座面最大高度：	2.65 mm
标称压摆率：	17 V/us	子类别：	Instrumentation Amplifier
最大压摆率：	4.5 mA	供电电压上限：	18 V
标称供电电压 (Vsup)：	15 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
最大电压增益：	10000	最小电压增益：	1
标称电压增益：	10	宽度：	7.5 mm
Base Number Matches：	1

INA111AU/1K 数据手册

The INA111 exhibits approximately 6dB rise in gain at

2MHz in unity gain. This is a result of its current-feedback

topology and is not an indication of instability. Unlike an op

amp with poor phase margin, the rise in response is a

predictable +6dB/octave due to a response zero. A simple

pole at 700kHz or lower will produce a flat passband

response (see Input Filtering).

INPUT BIAS CURRENT RETURN PATH

The input impedance of the INA111 is extremely high—

approximately 10¹²Ω. However, a path must be provided for

the input bias current of both inputs. This input bias current

is typically less than 10pA. High input impedance means

that this input bias current changes very little with varying

input voltage.

The INA111 provides excellent rejection of high frequency

common-mode signals. The typical performance curve,

“Common-Mode Rejection vs Frequency” shows this be-

havior. If the inputs are not properly balanced, however,

common-mode signals can be converted to differential sig-

nals. Run the V_I⁺_Nand V_I^–_Nconnections directly adjacent each

other, from the source signal all the way to the input pins. If

possible use a ground plane under both input traces. Avoid

running other potentially noisy lines near the inputs.

Input circuitry must provide a path for this input bias current

if the INA111 is to operate properly. Figure 3 shows various

provisions for an input bias current path. Without a bias

current return path, the inputs will float to a potential which

exceeds the common-mode range of the INA111 and the

input amplifiers will saturate.

If the differential source resistance is low, the bias current

return path can be connected to one input (see the thermo-

couple example in Figure 3). With higher source impedance,

using two resistors provides a balanced input with possible

advantages of lower input offset voltage due to bias current

and better high-frequency common-mode rejection.

NOISE AND ACCURACY PERFORMANCE

The INA111’s FET input circuitry provides low input bias

current and high speed. It achieves lower noise and higher

accuracy with high impedance sources. With source imped-

ances of 2kΩ to 50kΩ the INA114 may provide lower offset

voltage and drift. For very low source impedance (≤1kΩ),

the INA103 may provide improved accuracy and lower

noise.

Crystal or

Ceramic

INA111

Transducer

1MΩ

OFFSET TRIMMING

The INA111 is laser trimmed for low offset voltage and

drift. Most applications require no external offset adjust-

ment. Figure 2 shows an optional circuit for trimming the

output offset voltage. The voltage applied to Ref terminal is

summed at the output. Low impedance must be maintained

at this node to assure good common-mode rejection. The op

amp shown maintains low output impedance at high fre-

quency. Trim circuits with higher source impedance should

be buffered with an op amp follower circuit to assure low

impedance on the Ref pin.

Thermocouple

INA111

10kΩ

INA111

–

V_IN

V+

V_O

INA111

R_G

100µA

Center-tap provides

bias current return.

1/2 REF200

Ref

V_IN

100Ω⁽¹⁾

OPA177

±10mV

Adjustment Range

FIGURE 3. Providing an Input Common-Mode Current Path.

10kΩ⁽¹⁾

INPUT COMMON-MODE RANGE

The linear common-mode range of the input op amps of the

INA111 is approximately ±12V (or 3V from the power

supplies). As the output voltage increases, however, the

linear input range will be limited by the output voltage swing

of the input amplifiers, A₁and A₂. The common-mode range

is related to the output voltage of the complete amplifier—

see performance curve “Input Common-Mode Range vs

Output Voltage”.

100µA

1/2 REF200

NOTE: (1) For wider trim range required

in high gains, scale resistor values larger

V–

FIGURE 2. Optional Trimming of Output Offset Voltage.

INA111

1...5 6 789 10 11...14

下载PDF

与INA111AU/1K相关器件

型号	品牌	描述	获取价格	数据表
INA111AU/1KE4	BB	High Speed FET-Input INSTRUMENTATION AMPLIFIER	获取价格
INA111AU/1KG4	BB	High Speed FET-Input INSTRUMENTATION AMPLIFIER	获取价格
INA111AUE4	BB	High Speed FET-Input INSTRUMENTATION AMPLIFIER	获取价格
INA111AU-TR	BB	Instrumentation Amplifier, 1 Func, 6000uV Offset-Max, 2MHz Band Width, PDSO16,	获取价格
INA111BP	BB	High Speed FET-Input INSTRUMENTATION AMPLIFIER	获取价格
INA111BP	TI	高速 FET 输入仪表放大器 \| P \| 8	获取价格

与INA111AU/1K相关文章

SG3525资料手册详解：SG3525参数分析、引脚说明、应用介绍
2024-05-23

2
AT89C51单片机资料手册详细解析及应用示例
2024-05-23

5
CP2102资料手册解读：CP2102引脚说明、关键参数分析
2024-05-23

3
资料手册解读：UC3842参数和管脚说明
2024-05-22

5

产品中心

服务支持

精选活动

关于我们

帮助中心

INA111AU/1K

INA111AU/1K 技术参数

INA111AU/1K 数据手册

与INA111AU/1K相关器件

与INA111AU/1K相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

INA111AU/1K

INA111AU/1K 技术参数

INA111AU/1K 数据手册

与INA111AU/1K相关器件

与INA111AU/1K相关文章

您还可以找

您在本页遇到什么问题？