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OPA2277UG4 Equivalent & Substitute Parts
Part Overview
The OPA2277UG4 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.
The OPA2277UG4 operates across a wide supply voltage range of 4V to 36V with a slew rate of 0.8V/µs and a gain bandwidth product of 1 MHz. With input bias current of 500 pA and input offset voltage of 10 µV, this device is suitable for general-purpose amplification applications requiring moderate bandwidth and precision.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Slew Rate | 0.8 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 500 | pA |
| Voltage - Input Offset | 10 | µV |
| Current - Supply (x2 Channels) | 790 | µA |
| Current - Output / Channel | 35 | mA |
| Voltage - Supply Span (Min) | 4 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 3 (168 Hours) | — |
Substitute Part Grouping Explanation
Substitution of the OPA2277UG4 is determined by strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 2
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: 4V minimum to 36V maximum
- Operating Temperature Range: Must encompass or exceed -40°C to 85°C
Secondary Compatibility Parameters:
- Slew Rate: 0.8V/µs or greater
- Gain Bandwidth Product: 1 MHz or greater
- Current - Input Bias: 500 pA or lower
- Voltage - Input Offset: 10 µV or lower
- Current - Output / Channel: 35 mA or greater
Substitute parts are grouped into two categories:
Category 1: Direct Equivalents (Texas Instruments OPA2277 Series) OPA2277U represents the active production variant of the OPA2277 base product number, maintaining identical electrical specifications and 8-SOIC packaging. This part differs only in product status (Active vs. Obsolete) and packaging format (Tube vs. unspecified).
Category 2: Functional Equivalents (Analog Devices AD706 Series) AD706ARZ, AD706ARZ-REEL, AD706ARZ-REEL7, AD706JRZ, AD706JRZ-REEL, and AD706JRZ-REEL7 are general-purpose dual operational amplifiers in 8-SOIC packaging. These parts meet all primary substitution criteria and operate within the required supply voltage and temperature ranges. Performance characteristics differ in slew rate (0.15V/µs vs. 0.8V/µs), gain bandwidth product (800 kHz vs. 1 MHz), input bias current (50 pA vs. 500 pA), and output current capability (15 mA vs. 35 mA).
Category 3: Alternative Amplifier Types (STMicroelectronics J-FET and Audio Series) LF253DT, LF353DT, and LM833DT represent alternative amplifier architectures (J-FET and Audio types) that share the 8-SOIC package and dual-channel configuration but differ significantly in electrical performance characteristics and intended application domains.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | 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) | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OPA2277UG4 | Texas Instruments | Obsolete | General Purpose | 0.8 | 1 | 500 | 10 | 790 | 35 | 4 | 36 | -40 to 85 | 8-SOIC |
| OPA2277U | Texas Instruments | Active | General Purpose | 0.8 | 1 | 500 | 10 | 790 | 35 | 4 | 36 | -40 to 85 | 8-SOIC |
| AD706ARZ | Analog Devices Inc. | Active | General Purpose | 0.15 | 0.8 | 50 | 30 | 750 | 15 | 4 | 36 | -40 to 85 | 8-SOIC |
| AD706ARZ-REEL | Analog Devices Inc. | Active | General Purpose | 0.15 | 0.8 | 50 | 30 | 750 | 15 | 4 | 36 | -40 to 85 | 8-SOIC |
| AD706ARZ-REEL7 | Analog Devices Inc. | Active | General Purpose | 0.15 | 0.8 | 50 | 30 | 750 | 15 | 4 | 36 | -40 to 85 | 8-SOIC |
| AD706JRZ | Analog Devices Inc. | Active | General Purpose | 0.15 | 0.8 | 50 | 30 | 750 | 15 | 4 | 36 | 0 to 70 | 8-SOIC |
| AD706JRZ-REEL | Analog Devices Inc. | Active | General Purpose | 0.15 | 0.8 | 50 | 30 | 750 | 15 | 4 | 36 | 0 to 70 | 8-SOIC |
| AD706JRZ-REEL7 | Analog Devices Inc. | Active | General Purpose | 0.15 | 0.8 | 50 | 30 | 750 | 15 | 4 | 36 | 0 to 70 | 8-SOIC |
| LF253DT | STMicroelectronics | Active | J-FET | 16 | 4 | 20 | 3000 | 1400 | 40 | 6 | 36 | -40 to 105 | 8-SOIC |
| LF353DT | STMicroelectronics | Active | J-FET | 16 | 4 | 20 | 3000 | 1400 | 40 | 6 | 36 | 0 to 70 | 8-SOIC |
| LM833DT | STMicroelectronics | Active | Audio | 7 | 15 | 300000 | 300 | 4000 | 37 | 5 | 30 | -40 to 105 | 8-SOIC |
Engineering Selection Recommendations
Tier 1: Direct Replacement
OPA2277U is the recommended primary substitute for OPA2277UG4. This part maintains identical electrical specifications across all measured parameters and operates within the same temperature and supply voltage ranges. The only distinction is product status (Active vs. Obsolete) and packaging format. This part is suitable for direct substitution in all applications where OPA2277UG4 was originally specified.
Tier 2: Functional Equivalent with Performance Trade-offs
AD706ARZ, AD706ARZ-REEL, AD706ARZ-REEL7, AD706JRZ, AD706JRZ-REEL, and AD706JRZ-REEL7 are active general-purpose dual operational amplifiers that meet primary substitution criteria (8-SOIC package, dual-channel configuration, 4V to 36V supply range). These parts are suitable for applications where the following performance differences are acceptable:
- Reduced slew rate (0.15V/µs vs. 0.8V/µs)
- Lower gain bandwidth product (800 kHz vs. 1 MHz)
- Reduced output current capability (15 mA vs. 35 mA)
- Lower input bias current (50 pA vs. 500 pA)
AD706ARZ variants with operating temperature range -40°C to 85°C are compatible with the original temperature specification. AD706JRZ variants operate over 0°C to 70°C and are suitable only for applications not requiring the full -40°C to 0°C temperature range.
Tier 3: Alternative Architectures
LF253DT, LF353DT, and LM833DT represent alternative amplifier architectures (J-FET input and audio-optimized designs) that share the 8-SOIC package and dual-channel configuration. These parts exhibit significantly different electrical characteristics and are suitable only for applications where the specific performance enhancements (higher slew rate, higher bandwidth, higher output current) justify the architectural change and where the application domain aligns with the intended use case (J-FET or audio amplification).
All substitute parts listed are RoHS3 compliant and REACH unaffected, consistent with the original OPA2277UG4 compliance status.
Frequently Asked Questions (FAQ)
Q1: Can OPA2277U be used as a direct replacement for OPA2277UG4?
Yes. OPA2277U is electrically identical to OPA2277UG4 across all specified parameters. The primary difference is product status (Active vs. Obsolete). Both parts are packaged in 8-SOIC and operate across the same supply voltage range (4V to 36V) and temperature range (-40°C to 85°C). OPA2277U is the recommended substitute for new designs and ongoing procurement.
Q2: What are the key differences between OPA2277UG4 and AD706ARZ?
Both parts are general-purpose dual operational amplifiers in 8-SOIC packaging with identical supply voltage ranges (4V to 36V) and compatible temperature ranges (-40°C to 85°C). The AD706ARZ exhibits lower slew rate (0.15V/µs vs. 0.8V/µs), lower gain bandwidth product (800 kHz vs. 1 MHz), and reduced output current capability (15 mA vs. 35 mA). The AD706ARZ is suitable for applications where these performance reductions are acceptable and where the lower input bias current (50 pA vs. 500 pA) provides an advantage.
Q3: Are AD706JRZ variants suitable for all applications requiring OPA2277UG4?
AD706JRZ variants operate over a reduced temperature range (0°C to 70°C) compared to the OPA2277UG4 specification (-40°C to 85°C). These parts are suitable only for applications that do not require operation below 0°C or above 70°C. For applications requiring the full -40°C to 85°C temperature range, use AD706ARZ variants instead.
Q4: What is the difference between AD706ARZ, AD706ARZ-REEL, and AD706ARZ-REEL7?
These three part numbers represent the same electrical device (AD706 base product) with different packaging formats. AD706ARZ is supplied in Tube packaging. AD706ARZ-REEL and AD706ARZ-REEL7 are supplied in Cut Tape (CT) & Digi-Reel® format. All three variants are electrically identical and suitable for substitution. Selection depends on procurement and assembly requirements.
Q5: Can LF253DT or LF353DT replace OPA2277UG4?
LF253DT and LF353DT are J-FET input amplifiers with significantly different electrical characteristics. While both are dual-channel devices in 8-SOIC packaging, they exhibit higher slew rate (16V/µs vs. 0.8V/µs), higher gain bandwidth product (4 MHz vs. 1 MHz), and lower input bias current (20 pA vs. 500 pA). These parts are suitable only for applications where the J-FET architecture and enhanced performance characteristics are required. LF353DT operates over 0°C to 70°C, which does not cover the full OPA2277UG4 temperature range.
Q6: Is LM833DT a suitable substitute for OPA2277UG4?
LM833DT is an audio-optimized dual operational amplifier with significantly different electrical characteristics and intended application domain. While both are dual-channel devices in 8-SOIC packaging, LM833DT exhibits higher gain bandwidth product (15 MHz vs. 1 MHz), higher slew rate (7V/µs vs. 0.8V/µs), and substantially higher input bias current (300 nA vs. 500 pA). Additionally, LM833DT operates over a reduced supply voltage range (5V to 30V vs. 4V to 36V). This part is suitable only for audio amplification applications where the enhanced bandwidth and slew rate are required.
Q7: Are all substitute parts RoHS3 compliant?
Yes. All substitute parts listed (OPA2277U, AD706 series, LF253DT, LF353DT, and LM833DT) are RoHS3 compliant and REACH unaffected, consistent with the original OPA2277UG4 compliance status.
Q8: What packaging options are available for substitute parts?
OPA2277U is available in Tube packaging. AD706 variants are available in both Tube (AD706ARZ, AD706JRZ) and Cut Tape & Digi-Reel® formats (AD706ARZ-REEL, AD706ARZ-REEL7, AD706JRZ-REEL, AD706JRZ-REEL7). LF253DT, LF353DT, and LM833DT are available in Cut Tape & Digi-Reel® format. Selection depends on assembly and procurement requirements.
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