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LT1882IS Equivalent & Substitute Parts
Part Overview
The LT1882IS is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc., configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as Active product status and is ROHS3 compliant. The LT1882IS serves applications requiring low-offset voltage precision, moderate bandwidth, and wide supply voltage operation across industrial and commercial temperature ranges. Substitute parts are identified when equivalent electrical performance, package compatibility, and functional characteristics align with the original specification, enabling component interchangeability in circuit designs.
Substiute Parts
Key Parameters
| Parameter | LT1882IS Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 0.4 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 150 | pA |
| Voltage - Input Offset | 30 | µV |
| Current - Supply (x4 Channels) | 850 | µA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitute parts for the LT1882IS are identified based on strict alignment with the following critical parameters: amplifier type (general purpose), number of circuits (4), output type (rail-to-rail), package type (14-SOIC surface mount), and compliance certifications (ROHS3). Electrical performance parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and supply voltage range determine functional equivalence. Operating temperature range and moisture sensitivity level are secondary considerations for environmental compatibility.
Substitutes are grouped into two categories:
Category 1: Direct Analog Devices LT1882 Variants — Parts sharing the LT1882 base product number with identical electrical specifications but different packaging formats or temperature grades.
Category 2: Cross-Manufacturer General-Purpose Amplifiers — Texas Instruments OPA series devices with 4-circuit rail-to-rail configuration in 14-SOIC packages, meeting or exceeding the electrical performance envelope of the LT1882IS.
Category 3: Specialized Amplifier Types — Devices with enhanced performance characteristics (J-FET input, microPOWER operation) that provide functional substitution for specific application requirements while maintaining package and circuit count compatibility.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LT1882IS | Analog Devices | General Purpose | 4 | 0.4 | 1 | 150 | 30 | 850 | 40 | 2.7 | 36 | -40 to 85 | 14-SOIC |
| LT1882CS#PBF | Analog Devices | General Purpose | 4 | 0.35 | 1 | 150 | 30 | 650 | 40 | 2.7 | 36 | 0 to 70 | 14-SOIC |
| OP747ARZ | Analog Devices | General Purpose | 4 | 0.2 | 0.7 | 5000 | 30 | 320 | 30 | 2.7 | 30 | -40 to 85 | 14-SOIC |
| OP747ARZ-REEL7 | Analog Devices | General Purpose | 4 | 0.2 | 0.7 | 5000 | 30 | 320 | 30 | 2.7 | 30 | -40 to 85 | 14-SOIC |
| OPA4140AIDR | Texas Instruments | J-FET | 4 | 20 | 11 | 0.5 | 30 | 1800 | 36 | 4.5 | 36 | -40 to 125 | 14-SOIC |
| OPA4171AID | Texas Instruments | General Purpose | 4 | 1.5 | 3 | 8000 | 250 | 475 | 35 | 2.7 | 36 | -40 to 125 | 14-SOIC |
| OPA4171AIDR | Texas Instruments | General Purpose | 4 | 1.5 | 3 | 8000 | 250 | 475 | 35 | 2.7 | 36 | -40 to 125 | 14-SOIC |
| OPA4171AQDRQ1 | Texas Instruments | General Purpose | 4 | 1.5 | 3 | 8000 | 250 | 475 | 35 | 4.5 | 36 | -40 to 125 | 14-SOIC |
| OPA4241UA | Texas Instruments | General Purpose | 4 | 0.01 | 0.035 | 4000 | 50 | 25 | 50 | 2.7 | 36 | -40 to 85 | 14-SOIC |
| OPA4241UA/2K5 | Texas Instruments | General Purpose | 4 | 0.01 | 0.035 | 4000 | 50 | 25 | 50 | 2.7 | 36 | -40 to 85 | 14-SOIC |
| OPA4251UA | Texas Instruments | General Purpose | 4 | 0.01 | 0.035 | 20000 | 100 | — | 50 | 2.7 | 36 | -40 to 85 | 14-SOIC |
Engineering Selection Recommendations
Direct Substitution (Identical Electrical Performance):
LT1882CS#PBF is a direct substitute for LT1882IS within the same product family. Both devices share identical electrical specifications with the exception of operating temperature range (LT1882CS#PBF: 0°C to 70°C versus LT1882IS: -40°C to 85°C) and supply current (LT1882CS#PBF: 650µA versus LT1882IS: 850µA). Selection between these variants depends on application temperature requirements and power budget constraints. Both are ROHS3 compliant and Active product status.
Cross-Manufacturer Substitution (Enhanced Performance):
OPA4171AIDR and OPA4171AID (Texas Instruments) provide enhanced bandwidth (3 MHz versus 1 MHz) and slew rate (1.5 V/µs versus 0.4 V/µs) while maintaining general-purpose amplifier classification, 4-circuit configuration, and rail-to-rail output. These devices support extended operating temperature (-40°C to 125°C) and are ROHS3 compliant. Input offset voltage is higher (250 µV versus 30 µV), which may impact precision applications. OPA4171AQDRQ1 includes automotive-grade qualification (AEC-Q100) with minimum supply voltage of 4.5 V.
Specialized Performance Substitution:
OPA4140AIDR (Texas Instruments J-FET input) delivers superior slew rate (20 V/µs) and gain bandwidth product (11 MHz) with extremely low input bias current (0.5 pA). This device is suitable for applications requiring high-speed operation and minimal input loading. Minimum supply voltage requirement is 4.5 V. Extended temperature range (-40°C to 125°C) and ROHS3 compliance are maintained.
Ultra-Low Power Substitution:
OPA4241UA and OPA4241UA/2K5 (Texas Instruments microPOWER series) reduce supply current to 25µA total, enabling battery-powered and energy-constrained applications. Slew rate (0.01 V/µs) and gain bandwidth product (35 kHz) are significantly reduced, limiting use to low-frequency signal conditioning. Input offset voltage (50 µV) and input bias current (4 nA) remain acceptable for general-purpose applications. Both variants are ROHS3 compliant and support -40°C to 85°C operating range.
Low-Power Alternative:
OPA4251UA (Texas Instruments microPOWER series) provides similar ultra-low power operation (supply current not specified) with identical slew rate and bandwidth characteristics to OPA4241UA. Input bias current is higher (20 nA) and input offset voltage is increased (100 µV). This device is suitable for cost-sensitive, low-frequency applications where precision is secondary to power consumption.
Lower-Performance Substitution:
OP747ARZ and OP747ARZ-REEL7 (Analog Devices) offer reduced slew rate (0.2 V/µs) and lower gain bandwidth product (700 kHz) with significantly lower supply current (320µA). Input bias current is substantially higher (5 nA). Maximum supply voltage is limited to 30 V. These devices are appropriate for low-speed, low-power applications where bandwidth and slew rate are not critical. Both are ROHS3 compliant with -40°C to 85°C operating range.
Frequently Asked Questions (FAQ)
Q: Can LT1882CS#PBF replace LT1882IS in all applications?
A: LT1882CS#PBF is electrically equivalent to LT1882IS with two exceptions: operating temperature range is narrower (0°C to 70°C versus -40°C to 85°C) and supply current is lower (650µA versus 850µA). Substitution is valid only when the application operates within the 0°C to 70°C temperature window. The lower supply current of LT1882CS#PBF is advantageous for power-constrained designs.
Q: What is the primary difference between LT1882IS and OPA4171AIDR?
A: OPA4171AIDR provides higher bandwidth (3 MHz versus 1 MHz) and faster slew rate (1.5 V/µs versus 0.4 V/µs), making it suitable for higher-frequency signal processing. Input offset voltage is higher (250 µV versus 30 µV), which may affect precision applications. OPA4171AIDR supports extended temperature operation (-40°C to 125°C) and is available from Texas Instruments.
Q: When should OPA4140AIDR be selected over LT1882IS?
A: OPA4140AIDR is a J-FET input amplifier with superior slew rate (20 V/µs) and gain bandwidth product (11 MHz), combined with extremely low input bias current (0.5 pA). Select OPA4140AIDR for high-speed applications, transimpedance amplifier designs, or circuits requiring minimal input loading. Minimum supply voltage is 4.5 V, which may limit use in low-voltage systems.
Q: Are OPA4241UA and OPA4241UA/2K5 interchangeable?
A: OPA4241UA and OPA4241UA/2K5 are electrically identical. The difference is packaging format: OPA4241UA is supplied in Tube packaging, while OPA4241UA/2K5 is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and component handling procedures.
Q: What is the advantage of OP747ARZ over LT1882IS?
A: OP747ARZ reduces supply current to 320µA (compared to 850µA for LT1882IS), making it suitable for power-constrained applications. However, slew rate is lower (0.2 V/µs versus 0.4 V/µs) and gain bandwidth product is reduced (700 kHz versus 1 MHz). Maximum supply voltage is limited to 30 V. OP747ARZ is appropriate for low-speed, low-power signal conditioning.
Q: Can OPA4251UA be used instead of OPA4241UA?
A: OPA4251UA and OPA4241UA share identical slew rate (0.01 V/µs) and gain bandwidth product (35 kHz), both suitable for ultra-low-frequency applications. OPA4251UA has higher input bias current (20 nA versus 4 nA) and higher input offset voltage (100 µV versus 50 µV). OPA4251UA is appropriate for cost-sensitive designs where precision is not critical.
Q: Is OPA4171AQDRQ1 suitable for automotive applications?
A: OPA4171AQDRQ1 is qualified to AEC-Q100 automotive standard and carries automotive-grade designation. This device is designed for automotive applications requiring extended temperature operation (-40°C to 125°C) and enhanced reliability. Minimum supply voltage is 4.5 V. Verify specific automotive qualification requirements against application specifications.
Q: What packaging formats are available for LT1882 variants?
A: LT1882IS is supplied in Surface Mount (14-SOIC) with Cut Tape (CT) & Digi-Reel packaging. LT1882CS#PBF is supplied in Tube packaging. Both use identical 14-SOIC (0.154", 3.90mm Width) package case. Packaging selection depends on assembly equipment compatibility and component handling procedures.
Q: Are all substitute parts ROHS3 compliant?
A: All substitute parts listed are ROHS3 compliant, matching the compliance status of LT1882IS. REACH status is Unaffected for all devices. Moisture Sensitivity Level (MSL) varies: LT1882 variants are MSL 1 (Unlimited), while Texas Instruments OPA series devices are MSL 3 (168 Hours) or MSL 5 (48 Hours). Verify MSL requirements for storage and handling procedures.
Q: What is the maximum output current capability across all substitutes?
A: Output current per channel ranges from 30 mA (OP747ARZ series) to 50 mA (OPA4241UA, OPA4241UA/2K5, OPA4251UA). LT1882IS provides 40 mA per channel. Application load requirements determine whether reduced output current of OP747ARZ series is acceptable.
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