INA128

更新时间： 2024-11-03 07:07:59

品牌	Logo	应用领域
德州仪器 - TI		仪表放大器
页数	文件大小	规格书
20页	1558K
描述
Precision, Low Power INSTRUMENTATION AMPLIFIERS

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INA128 数据手册

INA128

INA129

SBOS051B − OCTOBER 1995 − REVISED FEBRUARY 2005

Precision, Low Power

INSTRUMENTATION AMPLIFIERS

F_DEATURES

DESCRIPTION

LOW OFFSET VOLTAGE: 50µV max

LOW DRIFT: 0.5µV/5C max

The INA128 and INA129 are low power, general

purpose instrumentation amplifiers offering excellent

accuracy. The versatile 3-op amp design and small size

make them ideal for a wide range of applications.

Current-feedback input circuitry provides wide

bandwidth even at high gain (200kHz at G = 100).

LOW INPUT BIAS CURRENT: 5nA max

HIGH CMR: 120dB min

INPUTS PROTECTED TO +40V

WIDE SUPPLY RANGE: +2.25V to +18V

LOW QUIESCENT CURRENT: 700µA

8-PIN PLASTIC DIP, SO-8

A single external resistor sets any gain from 1 to 10,000.

The INA128 provides an industry-standard gain

equation; the INA129 gain equation is compatible with

the AD620.

A_DPPLICATIONS

The INA128/INA129 is laser trimmed for very low offset

BRIDGE AMPLIFIER

voltage (50µV),

drift (0.5µV/°C) and high

THERMOCOUPLE AMPLIFIER

RTD SENSOR AMPLIFIER

MEDICAL INSTRUMENTATION

DATA ACQUISITION

common-mode rejection (120dB at G ≥ 100). It

operates with power supplies as low as 2.25V, and

quiescent current is only 700µA—ideal for battery-

operated systems. Internal input protection can

withstand up to 40V without damage.

The INA128/INA129 is available in 8-pin plastic DIP and

SO-8 surface-mount packages, specified for the –40°C

to +85°C temperature range. The INA128 is also

available in a dual configuration, the INA2128.

V+

INA128:

Ω

R_G

50k

INA128, INA129

G = 1 +

−

V_IN

Over-Voltage

Protection

A₁

INA129:

Ω

40k

Ω

49.4k

G = 1 +

(1)

25kΩ

R_G

A₃

V_O

R_G

(1)

25kΩ

A₂

Ref

V_IN

Over-Voltage

Protection

Ω

40k

Ω

NOTE: (1) INA129: 24.7k

V−

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.

All trademarks are the property of their respective owners.

ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎꢏ ꢐꢑꢊ ꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ

ꢓ ꢍꢋ ꢌꢍ ꢎꢏ ꢑꢍ ꢒ ꢖꢕ ꢓ ꢊ ꢌꢊ ꢓ ꢐ ꢑꢊ ꢍꢋꢒ ꢖꢕ ꢎ ꢑꢛꢕ ꢑꢕ ꢎ ꢏꢒ ꢍꢌ ꢆꢕꢜ ꢐꢒ ꢇꢋꢒ ꢑꢎ ꢔꢏ ꢕꢋꢑ ꢒ ꢒꢑ ꢐꢋꢙ ꢐꢎ ꢙ ꢝ ꢐꢎ ꢎ ꢐ ꢋꢑꢞꢚ

ꢀꢎ ꢍ ꢙꢔꢓ ꢑ ꢊꢍ ꢋ ꢖꢎ ꢍ ꢓ ꢕ ꢒ ꢒ ꢊꢋ ꢟ ꢙꢍ ꢕ ꢒ ꢋꢍꢑ ꢋꢕ ꢓꢕ ꢒꢒ ꢐꢎ ꢊꢘ ꢞ ꢊꢋꢓ ꢘꢔꢙ ꢕ ꢑꢕ ꢒꢑꢊ ꢋꢟ ꢍꢌ ꢐꢘ ꢘ ꢖꢐ ꢎ ꢐꢏ ꢕꢑꢕ ꢎ ꢒꢚ

www.ti.com

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INA128 替代型号

型号	品牌	替代类型	描述	数据表
INA118	TI	功能相似	Precision, Low Power INSTRUMENTATION AMPLIFIER

与INA128相关器件

型号	品牌	获取价格	描述	数据表
INA128/INA129	BB	获取价格	INA128. INA129 - Precision. Low Power INSTRUMENTATION AMPLIFIERS
INA128HD	TI	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128-HT	TI	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128-HT_15	TI	获取价格	Precision, Low-Power Instrumentation Amplifiers
INA128P	BB	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128P	TI	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128PA	BB	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128PA	TI	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128PAG4	TI	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128PG4	TI	获取价格	Precision, Low Power INSTRUMENTATION AMPLIFIERS

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