INA129

Instrumentation, Op Amps, Buffer Amps8-pin plastic DIP

INA129 is a low-power precision instrumentation amplifier with a gain range of 1 to 10,000, supply voltage of ±2.25V to ±18V, available in SO-8 and PDIP-8 packages, featuring low offset voltage and high common-mode rejection ratio.Checked against the datasheet

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Technical parameters

Key specs

Supply voltage4.5 ~ 36 V

Gain bandwidth product1.3 MHzTyp · 1.3MHz (G = 1)

Input offset voltage50 µVMax

Quiescent current700 µATyp

Channels1

Datasheet-verified parameters

23 items

Parameter	Value and test conditions	Source
Supply voltage range	Dual-supply: Min ±2.25V, Typ ±15V, Max ±18V; Single-supply: Min 4.5V, Typ 30V, Max 36V
Gain-bandwidth product	1.3MHz (G = 1)
Input offset voltage	Max 50μV
Quiescent current	700μA
Number of channels	1
Package	8-pin plastic DIP, SO-8
Operating temperature	-40°C to +85°C
RoHS	Yes
Gain	1 to 10,000 V/V
Gain equation	G = 1 + 49.4 kΩ / RG
Common-mode rejection ratio	Min 120dB
Input bias current	Max -5nA (CSO: SHE), Max -0.7nA (CSO: FRE)
Noise	8nV/√Hz, 0.2μVpp
Input overvoltage protection	±40V
Absolute Maximum Ratings - Supply voltage	Dual supply: Max ±18V; Single supply: Max 36V
Absolute Maximum Ratings - Operating temperature	-40°C to 125°C
Recommended Operating Conditions - Supply voltage	Dual-supply: Min ±2.25V, Max ±18V; Single-supply: Min 4.5V, Max 36V
Recommended Operating Conditions - Temperature	-40°C to 85°C
ESD - Human-body model	±2000V
ESD - Charged-device model	±50V
Output voltage swing	Positive: (V+) - 1.4V (SHE) / (V+) - 0.15V (FRE); Negative: (V-) + 1.4V (SHE) / (V-) + 0.15V (FRE)
Load capacitance	1000pF (Stable operation)
Short-circuit current	CSO: SHE +6/-15mA; CSO: FRE +18/-18mA (Continuous to VS/2)

All parameters (8)ExpandCollapse

Power
最大供电电压	36V
最大偏置电流	10nA
最大工作电压	36V
静态工作电流	700uA
静态电流	700uA
AC and DC characteristics
共模抑制比	86dB
最大增益	10000
最大失调电压	550uV

Pinout and package

5 Pin Configuration and Functi… — Package: **8-pin plastic DIP, SO-8**

Pin	Name	Function
1	RG	(Gain setting pin)
2	VIN-	(Negative input)
3	VIN+	(Positive input)
4	V-	(Negative supply)
5	REF	(Reference input)
6	VO	(Output)
7	V+	(Positive supply)
8	RG	(Gain setting pin)

Documents

DatasheetDatasheet · 2.7 MB · 2026-11-09 DatasheetDatasheet · 2.7 MB · 2026-11-09 DatasheetDatasheet · 2.6 MB · 2026-09-29 DatasheetDatasheet · 2.7 MB · 2026-09-22 Package DrawingPackage Drawing · 193.9 KB · 2026-09-22 Package DrawingPackage Drawing · 75.8 KB · 2026-09-22

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