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INA217AIP Equivalent & Substitute Parts
Part Overview
The INA217AIP is a single-circuit instrumentation amplifier manufactured by Texas Instruments in 8-PDIP through-hole packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The INA217AIP operates across a 9V to 36V supply range with a slew rate of 15V/µs and -3dB bandwidth of 3.4 MHz, designed for precision signal conditioning applications requiring low input offset voltage and controlled input bias current.
Substiute Parts
Key Parameters
| Parameter | INA217AIP Value | Unit |
|---|---|---|
| Amplifier Type | Instrumentation | — |
| Number of Circuits | 1 | — |
| Slew Rate | 15 | V/µs |
| -3dB Bandwidth | 3.4 | MHz |
| Current - Input Bias | 2 | µA |
| Voltage - Input Offset | 50 | µV |
| Current - Supply | 10 | mA |
| Current - Output / Channel | 60 | mA |
| Voltage - Supply Span (Min) | 9 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Mounting Type | Through Hole | — |
| Package / Case | 8-DIP (0.300", 7.62mm) | — |
| Product Status | Obsolete | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the INA217AIP is determined by the following critical parameters:
Packaging Compatibility: The INA217AIP uses 8-PDIP through-hole packaging. Substitute parts must maintain identical or compatible package footprints to ensure direct board-level replacement without redesign.
Supply Voltage Range: The device operates from 9V to 36V. Substitute parts must support this full range or a range that encompasses it.
Instrumentation Amplifier Function: All substitutes must be single-circuit instrumentation amplifiers with equivalent signal conditioning capability.
Electrical Performance Envelope: Key performance metrics include slew rate (15V/µs), bandwidth (3.4 MHz), input bias current (2 µA), input offset voltage (50 µV), supply current (10 mA), and output current capability (60 mA).
Operating Temperature Range: The INA217AIP operates from -40°C to 85°C. Substitutes operating within this range or an extended range are acceptable.
Compliance Requirements: All substitute parts must maintain ROHS3 compliance and EAR99 export classification.
Substitute parts are grouped into two categories:
Category 1 - Through-Hole 8-DIP Packaging (Direct Mechanical Replacement): AD621ANZ, AD621BNZ, LT1167ACN8#PBF, LT1167AIN8#PBF, LT1167CN8#PBF, LT1167IN8#PBF, LT1168ACN8#PBF, LT1920CN8#PBF, LT1920IN8#PBF. These parts maintain identical through-hole DIP packaging and support the full 9V to 36V supply range.
Category 2 - Surface Mount Alternative (INA849DR): This part offers superior electrical performance but requires PCB redesign due to 8-SOIC surface-mount packaging.
Parameter Comparison
| Parameter | INA217AIP | AD621ANZ | AD621BNZ | LT1167AIN8#PBF | LT1167IN8#PBF | LT1920IN8#PBF | INA849DR |
|---|---|---|---|---|---|---|---|
| Amplifier Type | Instrumentation | Instrumentation | Instrumentation | Instrumentation | Instrumentation | Instrumentation | Instrumentation |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 15 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 35 |
| -3dB Bandwidth (MHz) | 3.4 | 0.8 | 0.8 | — | — | — | 1.25 |
| Current - Input Bias (pA/µA) | 2 µA | 500 pA | 500 pA | 50 pA | 80 pA | 500 pA | 20 pA |
| Voltage - Input Offset (µV) | 50 | 75 | 50 | 15 | 20 | 30 | 10 |
| Current - Supply (mA/µA) | 10 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 6.2 |
| Current - Output / Channel (mA) | 60 | 18 | 18 | 27 | 27 | 27 | 34 |
| Voltage - Supply Span Min (V) | 9 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 8 |
| Voltage - Supply Span Max (V) | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Operating Temperature (°C) | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 125 |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount |
| Package / Case | 8-DIP | 8-DIP | 8-DIP | 8-DIP | 8-DIP | 8-DIP | 8-SOIC |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Through-Hole Replacement (No PCB Redesign):
Select from the 8-DIP through-hole substitute parts: AD621ANZ, AD621BNZ, LT1167AIN8#PBF, LT1167IN8#PBF, LT1920IN8#PBF, or LT1168ACN8#PBF. All are active products with ROHS3 compliance and support the full 9V to 36V supply range required by the INA217AIP.
LT1167AIN8#PBF and LT1167IN8#PBF offer the lowest input bias current (50 pA and 80 pA respectively) and lowest input offset voltage (15 µV and 20 µV), providing superior precision for low-level signal conditioning. These parts maintain the -40°C to 85°C operating temperature range of the original device.
AD621BNZ provides a direct electrical match with 50 µV input offset voltage identical to the INA217AIP, maintaining through-hole packaging and the full temperature range.
LT1920IN8#PBF offers moderate input bias current (500 pA) and input offset voltage (30 µV) with active product status and full temperature range support.
For Surface-Mount Applications (PCB Redesign Required):
INA849DR is an active product offering superior electrical performance: 35V/µs slew rate (versus 15V/µs), 20 pA input bias current, and 10 µV input offset voltage. This part requires PCB redesign due to 8-SOIC surface-mount packaging but extends the operating temperature range to -40°C to 125°C and reduces supply current to 6.2 mA.
All recommended substitutes maintain ROHS3 compliance, EAR99 export classification, and MSL rating of 1 (Unlimited) or 2 (1 Year), ensuring compatibility with standard manufacturing and storage requirements.
Frequently Asked Questions (FAQ)
Q: Can I directly replace the INA217AIP with any of the through-hole 8-DIP substitutes without PCB modification?
A: Yes. All through-hole 8-DIP substitute parts (AD621ANZ, AD621BNZ, LT1167ACN8#PBF, LT1167AIN8#PBF, LT1167CN8#PBF, LT1167IN8#PBF, LT1168ACN8#PBF, LT1920CN8#PBF, LT1920IN8#PBF) maintain identical 0.300" (7.62mm) DIP packaging and pin configuration, enabling direct socket replacement.
Q: What is the primary difference between the LT1167 and LT1920 series substitutes?
A: Both series operate at 1.2V/µs slew rate and 1 MHz gain bandwidth product with 900 µA supply current. The LT1167 series offers lower input bias current (50 pA to 80 pA) and lower input offset voltage (15 µV to 20 µV). The LT1920 series provides higher input bias current (500 pA) and higher input offset voltage (30 µV). Selection depends on precision requirements for your specific application.
Q: Why does the INA849DR require PCB redesign?
A: The INA849DR uses 8-SOIC surface-mount packaging (0.154" width) instead of the through-hole 8-DIP package (0.300" width). The pin pitch, spacing, and mounting method are fundamentally different, requiring PCB layout redesign. However, this part offers superior electrical performance with 35V/µs slew rate and extended temperature range to 125°C.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All recommended substitute parts maintain ROHS3 compliance and EAR99 export classification, matching the compliance profile of the INA217AIP.
Q: What is the minimum supply voltage for the substitute parts?
A: The through-hole 8-DIP substitutes (AD621 and LT1167/LT1168/LT1920 series) operate from 4.6V minimum, which is lower than the INA217AIP minimum of 9V. The INA849DR operates from 8V minimum. All parts support the full 36V maximum supply voltage of the original device.
Q: Which substitute offers the best precision for low-level signal conditioning?
A: LT1167AIN8#PBF provides the lowest input bias current (50 pA) and lowest input offset voltage (15 µV) among through-hole 8-DIP options, with active product status and full -40°C to 85°C temperature range support. For surface-mount applications, INA849DR offers 20 pA input bias current and 10 µV input offset voltage.
Q: Can I use the LT1167CN8#PBF or LT1167ACN8#PBF for applications requiring -40°C operation?
A: LT1167CN8#PBF and LT1167ACN8#PBF operate from 0°C to 70°C, which does not include -40°C. For full -40°C to 85°C temperature range support, use LT1167AIN8#PBF, LT1167IN8#PBF, LT1920IN8#PBF, AD621ANZ, or AD621BNZ.
Q: What is the output current capability difference between the INA217AIP and substitutes?
A: The INA217AIP provides 60 mA output current per channel. Substitute parts provide lower output current: AD621 series (18 mA), LT1167/LT1920 series (27 mA), and INA849DR (34 mA). Verify that your application load impedance is compatible with the reduced output current capability of selected substitutes.
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