INA111BP Equivalent & Substitute Parts

Part Overview

The INA111BP is a Texas Instruments instrumentation amplifier featuring a single circuit in 8-PDIP through-hole packaging. This device is classified as Active product status and is ROHS3 compliant. The INA111BP serves precision signal conditioning applications requiring low input bias current and low input offset voltage. Substitute parts are identified when equivalent electrical performance parameters and compatible packaging are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

INA111BP

Texas InstrumentsIn Stock: 3757INA111BP Datasheet

Current PartRFQ

INA111AP

Texas InstrumentsIn Stock: 2080INA111AP Datasheet

MFR RecommendedRFQ

AD8220TRMZ-EP

Analog Devices Inc.In Stock: 7195AD8220TRMZ-EP Datasheet

MFR RecommendedRFQ

LT1167CN8#PBF

Analog Devices Inc.In Stock: 1394LT1167CN8#PBF Datasheet

MFR RecommendedRFQ

LT1167IN8#PBF

Analog Devices Inc.In Stock: 774LT1167IN8#PBF Datasheet

MFR RecommendedRFQ

LT1168ACN8#PBF

Analog Devices Inc.In Stock: 1131LT1168ACN8#PBF Datasheet

MFR RecommendedRFQ

LT1920CN8#PBF

Analog Devices Inc.In Stock: 2246LT1920CN8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the INA111BP are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Amplifier Type: Instrumentation
• Number of Circuits: 1
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Voltage - Supply Span: 12 V minimum to 36 V maximum
• Operating Temperature Range: -40°C to 85°C or broader
• RoHS Status: ROHS3 Compliant

Electrical Performance Parameters:

• Slew Rate: 17 V/µs (INA111BP baseline)
• -3dB Bandwidth: 2 MHz (INA111BP baseline)
• Current - Input Bias: 2 pA (INA111BP baseline)
• Voltage - Input Offset: 100 µV (INA111BP baseline)
• Current - Supply: 3.3 mA (INA111BP baseline)
• Current - Output / Channel: 30 mA (INA111BP baseline)

Substitutes are identified where the package, mounting type, and supply voltage specifications align with the INA111BP. Variations in electrical performance parameters are documented to enable informed selection based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Same Package, Through-Hole Mounting):

INA111AP is the primary direct substitute for INA111BP. Both devices are manufactured by Texas Instruments, feature identical 8-DIP through-hole packaging, and share the same supply voltage range (12 V to 36 V) and operating temperature range (-40°C to 85°C). Both are ROHS3 compliant. The INA111AP exhibits identical slew rate (17 V/µs) and bandwidth (2 MHz) specifications. Input offset voltage differs at 200 µV versus 100 µV on the INA111BP.

LT1167IN8#PBF is a through-hole instrumentation amplifier in 8-DIP packaging manufactured by Analog Devices Inc. This device supports the full supply voltage range (4.6 V to 36 V) and operating temperature range (-40°C to 85°C) compatible with INA111BP applications. ROHS3 compliance is confirmed. Electrical performance differs: slew rate is 1.2 V/µs, gain bandwidth product is 1 MHz, input bias current is 80 pA, and input offset voltage is 20 µV.

LT1167CN8#PBF is a through-hole instrumentation amplifier in 8-DIP packaging from Analog Devices Inc. with ROHS3 compliance. Operating temperature range is 0°C to 70°C, which is narrower than INA111BP. Supply voltage range is 4.6 V to 36 V. Electrical specifications include 1.2 V/µs slew rate, 1 MHz gain bandwidth product, 80 pA input bias current, and 20 µV input offset voltage.

LT1168ACN8#PBF is a through-hole instrumentation amplifier in 8-DIP packaging from Analog Devices Inc. with ROHS3 compliance. Operating temperature range is 0°C to 70°C. Supply voltage range is 4.6 V to 36 V. Electrical specifications include 0.5 V/µs slew rate, 400 kHz gain bandwidth product, 40 pA input bias current, and 15 µV input offset voltage.

LT1920CN8#PBF is a through-hole instrumentation amplifier in 8-DIP packaging from Analog Devices Inc. with ROHS3 compliance. Operating temperature range is 0°C to 70°C. Supply voltage range is 4.6 V to 36 V. Electrical specifications include 1.2 V/µs slew rate, 1 MHz gain bandwidth product, 500 pA input bias current, and 30 µV input offset voltage.

Alternative with Different Mounting (Surface Mount):

AD8220TRMZ-EP is a J-FET amplifier from Analog Devices Inc. in 8-MSOP surface-mount packaging. This device is not a direct substitute due to different mounting type and package footprint. Supply voltage range is 4.5 V to 36 V. Operating temperature range is -55°C to 125°C, which exceeds INA111BP specifications. ROHS3 compliance is confirmed. This device is suitable only for applications where surface-mount technology is specified.

Frequently Asked Questions (FAQ)

Q: Can INA111AP directly replace INA111BP in existing designs?

A: INA111AP is compatible with INA111BP in applications where the 8-DIP through-hole package is used. Both devices share identical package dimensions, supply voltage range (12 V to 36 V), and operating temperature range (-40°C to 85°C). The primary difference is input offset voltage: INA111AP specifies 200 µV versus 100 µV for INA111BP. Verify that the application tolerance for input offset voltage accommodates this difference.

Q: What is the key difference between LT1167CN8#PBF and LT1167IN8#PBF?

A: Both devices are instrumentation amplifiers in 8-DIP through-hole packaging from Analog Devices Inc. with identical electrical specifications. The primary difference is operating temperature range: LT1167CN8#PBF operates 0°C to 70°C, while LT1167IN8#PBF operates -40°C to 85°C. Select LT1167IN8#PBF for applications requiring the extended low-temperature range.

Q: Can AD8220TRMZ-EP replace INA111BP?

A: AD8220TRMZ-EP is not a direct substitute. This device uses 8-MSOP surface-mount packaging, whereas INA111BP uses 8-DIP through-hole packaging. PCB layout and assembly process changes are required. Additionally, AD8220TRMZ-EP is a J-FET amplifier type, not an instrumentation amplifier. Select this device only when surface-mount technology is specified for the application.

Q: Which substitute offers the lowest input offset voltage?

A: LT1168ACN8#PBF specifies 15 µV input offset voltage, which is the lowest among the listed substitutes. However, this device has the narrowest operating temperature range (0°C to 70°C) and the lowest slew rate (0.5 V/µs). Confirm that these specifications are compatible with application requirements before selection.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. Compliance is confirmed for INA111AP, LT1167CN8#PBF, LT1167IN8#PBF, LT1168ACN8#PBF, LT1920CN8#PBF, and AD8220TRMZ-EP.

Q: What is the minimum supply voltage for LT-series substitutes?

A: LT1167CN8#PBF, LT1167IN8#PBF, LT1168ACN8#PBF, and LT1920CN8#PBF all specify a minimum supply voltage of 4.6 V. This is lower than the INA111BP minimum of 12 V. Applications using lower supply voltages may benefit from these alternatives, provided other electrical specifications are acceptable.

Q: Which substitute has the highest slew rate?

A: INA111AP matches the INA111BP slew rate of 17 V/µs. All other substitutes have lower slew rates: LT1167CN8#PBF and LT1167IN8#PBF at 1.2 V/µs, LT1920CN8#PBF at 1.2 V/µs, LT1168ACN8#PBF at 0.5 V/µs, and AD8220TRMZ-EP at 2 V/µs.