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OPA182IDR Equivalent & Substitute Parts
Part Overview
The OPA182IDR is a zero-drift operational amplifier manufactured by Texas Instruments, designed for precision analog signal conditioning applications. This single-circuit, rail-to-rail amplifier operates across a 4.5 V to 36 V supply range with a 5 MHz gain bandwidth product and exceptionally low input offset voltage of 0.45 µV. The device is housed in an 8-SOIC surface-mount package and is currently in active production status. Substitute parts are identified when equivalent electrical performance and functional characteristics are required, particularly when packaging format, supply chain availability, or manufacturing source alternatives are necessary.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | Zero-Drift | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Gain Bandwidth Product | 5 | MHz |
| Slew Rate | 10 | V/µs |
| Voltage - Input Offset | 0.45 | µV |
| Current - Input Bias | 50 | pA |
| Current - Supply | 850 | µA |
| Current - Output / Channel | 65 | mA |
| Voltage - Supply Span (Min) | 4.5 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 125 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
Substitute Part Grouping Explanation
Substitute parts for the OPA182IDR are classified into two categories based on electrical and mechanical compatibility:
Parametric Equivalent (Direct Substitution): The OPA182IDT shares identical electrical specifications with the OPA182IDR, including 5 MHz gain bandwidth product, 10 V/µs slew rate, 0.45 µV input offset voltage, and 36 V maximum supply voltage. The only difference is packaging format (Tape & Reel versus Cut Tape). This part is suitable for direct board-level substitution without circuit redesign.
Similar Substitutes (Application-Dependent): The LTC1050 and LTC1052 series from Analog Devices Inc. are zero-drift amplifiers with reduced bandwidth (1.2 to 2.5 MHz) and lower maximum supply voltage (16 V maximum). These parts are functionally similar but operate within different electrical constraints. Substitution requires verification that the application does not depend on the OPA182IDR's 5 MHz bandwidth or 36 V supply capability. Key differentiating parameters include:
- Gain Bandwidth Product: OPA182IDR operates at 5 MHz; LTC1050/LTC1052 series at 1.2 to 2.5 MHz
- Maximum Supply Voltage: OPA182IDR supports 36 V; LTC1050/LTC1052 series limited to 16 V
- Slew Rate: OPA182IDR provides 10 V/µs; LTC1050/LTC1052 series provides 4 V/µs
- Mounting: OPA182IDR available in 8-SOIC surface mount; LTC1050/LTC1052 available in through-hole (8-DIP, 14-DIP) and surface-mount (8-SO, 16-SO) packages
Parameter Comparison
| Parameter | OPA182IDR | OPA182IDT | LTC1050ACN8#PBF | LTC1050CN8#PBF | LTC1050CS8#PBF | LTC1050HS8#PBF | LTC1052CN8#PBF | LTC1052CSW#PBF |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Amplifier Type | Zero-Drift | Zero-Drift | Zero-Drift | Zero-Drift | Zero-Drift | Zero-Drift | Zero-Drift | Zero-Drift |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Gain Bandwidth Product (MHz) | 5 | 5 | 2.5 | 2.5 | 2.5 | 2.5 | 1.2 | 1.2 |
| Slew Rate (V/µs) | 10 | 10 | 4 | 4 | 4 | 4 | 4 | 4 |
| Voltage - Input Offset (µV) | 0.45 | 0.45 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Current - Input Bias (pA) | 50 | 50 | 10 | 10 | 10 | 10 | 1 | 1 |
| Current - Supply (µA) | 850 | 850 | 1000 | 1000 | 1000 | 1000 | 1700 | 1700 |
| Voltage - Supply Span Min (V) | 4.5 | 4.5 | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 |
| Voltage - Supply Span Max (V) | 36 | 36 | 16 | 16 | 16 | 16 | 16 | 16 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 85 | -40 to 85 |
| Mounting Type | Surface Mount | Surface Mount | Through Hole | Through Hole | Surface Mount | Surface Mount | Through Hole | Surface Mount |
| Package / Case | 8-SOIC | 8-SOIC | 8-DIP | 8-DIP | 8-SOIC | 8-SOIC | 8-DIP | 16-SOIC |
| RoHS Status | Not applicable | Not applicable | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
OPA182IDT (Parametric Equivalent): This part is the direct electrical equivalent of the OPA182IDR and is recommended as the primary substitute when packaging format flexibility is acceptable. Both parts are manufactured by Texas Instruments, maintain identical electrical specifications, and are in active production status. The OPA182IDT is supplied in Tape & Reel format, making it suitable for high-volume automated assembly processes, whereas the OPA182IDR is supplied in Cut Tape format for lower-volume or manual assembly applications.
LTC1050 Series (Similar Substitute): The LTC1050 family from Analog Devices Inc. is suitable for applications where the OPA182IDR's 5 MHz bandwidth and 36 V supply capability are not required. The LTC1050CS8#PBF and LTC1050HS8#PBF variants provide surface-mount 8-SOIC packaging compatible with OPA182IDR board layouts. The LTC1050HS8#PBF extends the operating temperature range to -40°C to 125°C, matching the OPA182IDR specification. All LTC1050 variants are ROHS3 compliant and carry unlimited moisture sensitivity rating. Selection between through-hole (8-DIP, 14-DIP) and surface-mount (8-SOIC) packages depends on board design requirements.
LTC1052 Series (Similar Substitute): The LTC1052 family offers the lowest input bias current (1 pA) among all listed alternatives, making it suitable for high-impedance signal conditioning applications. However, the LTC1052 series operates at 1.2 MHz bandwidth and 16 V maximum supply voltage. The LTC1052CSW#PBF provides a 16-SOIC surface-mount package, which requires board layout modification compared to the 8-SOIC OPA182IDR footprint. All LTC1052 variants are ROHS3 compliant and in active production status.
Frequently Asked Questions (FAQ)
Q: Can the OPA182IDT be used as a direct replacement for the OPA182IDR on the same printed circuit board?
A: Yes. The OPA182IDT is a parametric equivalent with identical electrical specifications and the same 8-SOIC package footprint. The only difference is the packaging format (Tape & Reel versus Cut Tape), which does not affect board-level compatibility. No circuit redesign is required.
Q: What are the key limitations when substituting LTC1050 or LTC1052 series amplifiers for the OPA182IDR?
A: The LTC1050 and LTC1052 series have three primary limitations: (1) reduced gain bandwidth product (2.5 MHz for LTC1050, 1.2 MHz for LTC1052 versus 5 MHz for OPA182IDR), (2) lower maximum supply voltage (16 V versus 36 V), and (3) reduced slew rate (4 V/µs versus 10 V/µs). These differences make them unsuitable for applications requiring high-speed signal processing or operation from high-voltage supplies.
Q: Which LTC1050 variant is most compatible with OPA182IDR board designs?
A: The LTC1050CS8#PBF and LTC1050HS8#PBF both use the 8-SOIC surface-mount package, matching the OPA182IDR footprint. The LTC1050HS8#PBF is preferred when the extended operating temperature range (-40°C to 125°C) is required, as it matches the OPA182IDR specification. The LTC1050CS8#PBF operates to 85°C maximum.
Q: Are all listed substitute parts RoHS compliant?
A: The OPA182IDR and OPA182IDT are marked as "Not applicable" for RoHS status. All LTC1050 and LTC1052 variants are ROHS3 compliant. If RoHS compliance is a design requirement, the Analog Devices Inc. alternatives must be selected.
Q: What is the difference between LTC1050CN8#PBF and LTC1050CS8#PBF?
A: The LTC1050CN8#PBF is a through-hole 8-DIP package device supplied in tube packaging, while the LTC1050CS8#PBF is a surface-mount 8-SOIC package device also supplied in tube packaging. Both have identical electrical specifications. The LTC1050CS8#PBF is suitable for surface-mount assembly compatible with OPA182IDR board designs.
Q: Can the LTC1052CSW#PBF be used as a direct footprint replacement for the OPA182IDR?
A: No. The LTC1052CSW#PBF uses a 16-SOIC package, which has a different pin count and footprint compared to the 8-SOIC OPA182IDR. Board layout modification is required. However, the electrical performance characteristics (zero-drift amplifier, single circuit, low input bias current) make it suitable for applications where the footprint change is acceptable.
Q: What is the moisture sensitivity level (MSL) difference between OPA182IDR and LTC1050/LTC1052 alternatives?
A: The OPA182IDR has MSL 2 (1 Year), while all LTC1050 and LTC1052 variants have MSL 1 (Unlimited). This indicates that Analog Devices parts have superior moisture resistance and do not require time-limited storage conditions after manufacturing.
Q: Which substitute part has the lowest input bias current?
A: The LTC1052 series has the lowest input bias current at 1 pA, compared to 50 pA for the OPA182IDR and 10 pA for the LTC1050 series. This makes the LTC1052 variants suitable for ultra-high-impedance signal conditioning applications.
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