INA114BP Equivalent & Substitute Parts

Part Overview

The INA114BP is a single-channel instrumentation amplifier manufactured by Texas Instruments in 8-PDIP through-hole packaging. This device is classified as an active linear amplifier component with an operating temperature range of -40°C to 85°C and is currently in active product status. The INA114BP is RoHS3 compliant and REACH unaffected, making it suitable for modern electronic applications requiring precision signal conditioning. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the same package form factor and operating environment.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Instrumentation	—
Number of Circuits	1	—
Slew Rate	0.6	V/µs
-3dB Bandwidth	1	MHz
Current - Input Bias	500	pA
Voltage - Input Offset	10	µV
Current - Supply	2.2	mA
Current - Output / Channel	20	mA
Voltage - Supply Span (Min)	4.5	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the INA114BP is determined by strict compatibility across the following critical parameters:

Package and Mechanical Compatibility: All substitute parts must use 8-DIP (0.300", 7.62mm) through-hole packaging to ensure direct pin-for-pin compatibility on printed circuit boards.

Electrical Performance Envelope: Substitute parts must operate within the supply voltage range of 4.5V to 36V minimum and maximum specifications. The INA114BP operates across -40°C to 85°C; substitutes operating within this range or a subset thereof are acceptable.

Amplifier Classification: All substitutes must be single-channel instrumentation amplifiers with identical circuit count (1 circuit) to maintain functional equivalence.

Compliance and Regulatory Status: All substitute parts must maintain RoHS3 compliance and REACH unaffected status to satisfy modern procurement and environmental requirements.

Substitute parts are grouped into two categories based on electrical performance characteristics:

Category A - Direct Performance Equivalents: Parts with slew rates and bandwidth specifications matching or exceeding the INA114BP (0.6V/µs, 1 MHz) while maintaining compatible input bias current and offset voltage specifications.

Category B - Enhanced Performance Alternatives: Parts with superior slew rate (1.2V/µs or higher) and bandwidth (1.2 MHz or higher) that provide improved dynamic response while maintaining backward compatibility with the INA114BP application envelope.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	Bandwidth (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)
INA114BP	Texas Instruments	0.6	1	500	10	2.2	20	4.5	36	-40 to 85
AD620ANZ	Analog Devices Inc.	1.2	1	500	30	0.9	18	4.6	36	-40 to 85
AD620BNZ	Analog Devices Inc.	1.2	1	500	15	0.9	18	4.6	36	-40 to 85
AD622ANZ	Analog Devices Inc.	1.2	1	2000	60	0.9	18	5.2	36	-40 to 85
AMP02EPZ	Analog Devices Inc.	6	1.2	2000	20	5	32	9	36	-40 to 85
AMP02FPZ	Analog Devices Inc.	6	1.2	4000	40	5	32	9	36	-40 to 85
LT1167CN8#PBF	Analog Devices Inc.	1.2	1	80	20	0.9	—	4.6	36	0 to 70
LT1167IN8#PBF	Analog Devices Inc.	1.2	1	80	20	0.9	27	4.6	36	-40 to 85
LT1168ACN8#PBF	Analog Devices Inc.	0.5	0.4	40	15	0.35	32	4.6	36	0 to 70
LT1920CN8#PBF	Analog Devices Inc.	1.2	1	500	30	0.9	—	4.6	36	0 to 70

Engineering Selection Recommendations

Primary Substitutes for Full Compatibility:

The AD620BNZ and LT1167IN8#PBF are the most direct substitutes for the INA114BP. Both devices maintain the complete operating temperature range of -40°C to 85°C, support the full supply voltage envelope (4.6V to 36V), and are packaged in 8-DIP through-hole format. AD620BNZ offers improved input offset voltage (15 µV versus 10 µV) with lower supply current consumption (0.9 mA versus 2.2 mA). LT1167IN8#PBF provides superior input bias current performance (80 pA versus 500 pA) while maintaining equivalent bandwidth and slew rate specifications.

Enhanced Performance Alternatives:

The AMP02EPZ and AMP02FPZ provide significantly higher slew rate (6V/µs) and bandwidth (1.2 MHz) for applications requiring faster transient response. These parts are suitable when the INA114BP's 0.6V/µs slew rate is insufficient. However, both AMP02 variants require a minimum supply voltage of 9V, restricting their use in lower-voltage systems.

Temperature-Constrained Substitutes:

The LT1167CN8#PBF and LT1920CN8#PBF operate only across 0°C to 70°C and are not suitable for applications requiring the full -40°C to 85°C range of the INA114BP.

Not Recommended:

The AD622ANZ and LT1168ACN8#PBF exhibit significant deviations from INA114BP specifications. AD622ANZ requires minimum 5.2V supply voltage and exhibits substantially higher input bias current (2 nA). LT1168ACN8#PBF operates at reduced bandwidth (400 kHz) and slew rate (0.5V/µs), making it unsuitable for applications designed around the INA114BP's 1 MHz bandwidth.

All recommended substitutes maintain RoHS3 compliance and REACH unaffected status consistent with the INA114BP.

Frequently Asked Questions (FAQ)

Q: Can I directly replace an INA114BP with an AD620BNZ on an existing circuit board?

A: Yes. Both devices use 8-DIP through-hole packaging with identical pin assignments for instrumentation amplifier circuits. The AD620BNZ operates within the INA114BP's supply voltage range (4.6V to 36V) and full temperature range (-40°C to 85°C). Verify that your application can tolerate the AD620BNZ's 15 µV input offset voltage specification, which differs from the INA114BP's 10 µV.

Q: What is the key difference between AD620ANZ and AD620BNZ?

A: Both parts are electrically identical except for input offset voltage specification. AD620ANZ specifies 30 µV maximum input offset, while AD620BNZ specifies 15 µV maximum. AD620BNZ is the tighter tolerance variant and is preferred for precision applications. Both share identical slew rate (1.2V/µs), bandwidth (1 MHz), and supply current (0.9 mA) specifications.

Q: Why do AMP02EPZ and AMP02FPZ require 9V minimum supply voltage?

A: The AMP02 series is designed for higher-performance applications requiring 6V/µs slew rate and 1.2 MHz bandwidth. This enhanced performance requires higher internal bias currents and circuit complexity, necessitating a higher minimum supply voltage threshold. These parts are not suitable for 4.5V to 9V supply systems.

Q: Can I use LT1167CN8#PBF in an application requiring -40°C operation?

A: No. LT1167CN8#PBF operates only across 0°C to 70°C and does not meet the -40°C lower temperature limit. Use LT1167IN8#PBF instead, which operates across -40°C to 85°C and is otherwise electrically equivalent.

Q: What does "8-DIP (0.300", 7.62mm)" packaging mean?

A: This specifies a dual-in-line package with 8 pins arranged in two rows, 0.300 inches apart (7.62 millimeters). This is a standard through-hole package compatible with conventional PCB drilling and soldering processes. All substitute parts listed use this identical package format.

Q: Is the INA114BP still in active production?

A: Yes. The INA114BP maintains active product status with 1409 pieces in current inventory. However, substitute parts such as AD620BNZ and LT1167IN8#PBF offer improved specifications and are available in higher quantities (1688 and 746 pieces respectively), making them viable alternatives for new designs.

Q: What is the significance of RoHS3 compliance for all listed parts?

A: RoHS3 compliance certifies that all parts meet European Union restrictions on hazardous substances, including lead, cadmium, mercury, and specific flame retardants. This compliance is mandatory for products sold in EU markets and is increasingly required by global procurement standards. All listed substitutes maintain this certification.

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