Request Quote
(Ships tomorrow)
OPA2277UAE4 Equivalent & Substitute Parts
Part Overview
The OPA2277UAE4 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring two independent circuits in an 8-SOIC surface mount package. This device is classified as obsolete, though 1112 pieces remain available in new original stock. The OPA2277UAE4 operates across a wide supply voltage range of 4V to 36V and is suitable for applications requiring low input bias current and moderate bandwidth performance.
Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, long-term production support, and supply chain reliability. Active alternatives with comparable electrical characteristics and identical packaging are available from both Texas Instruments and other manufacturers.
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 | 4 | nA |
| Voltage - Input Offset | 20 | µV |
| Current - Supply (per channel) | 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 | — |
Substitute Part Grouping Explanation
Substitution of the OPA2277UAE4 is determined by strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Package type: 8-SOIC (0.154", 3.90mm Width)
- Number of circuits: 2
- Mounting type: Surface Mount
- Supply voltage range: Minimum 4V, Maximum 36V
- Operating temperature range: Must encompass or match -40°C to 85°C
- RoHS3 compliance and REACH unaffected status
Secondary Compatibility Factors:
- Slew rate, gain bandwidth product, input bias current, and input offset voltage determine functional equivalence
- Output current capability must meet or exceed application requirements
- Supply current consumption affects thermal and power budget considerations
Substitute parts are grouped into two categories:
Category 1: Direct Equivalents (Texas Instruments OPA2277 Series) OPA2277UA represents the active production equivalent with identical electrical specifications. Packaging differs only in format (Tube vs. 8-SOIC), with no impact on electrical performance.
Category 2: Functional Alternatives (Analog Devices AD706 Series) AD706 variants (ARZ, ARZ-REEL, ARZ-REEL7, JRZ, JRZ-REEL, JRZ-REEL7) provide general-purpose amplification with compatible supply ranges and package geometry. Electrical parameters differ slightly: lower slew rate (0.15V/µs vs. 0.8V/µs), reduced gain bandwidth product (800 kHz vs. 1 MHz), and lower input bias current (50 pA vs. 4 nA). Temperature range variants exist (industrial -40°C to 85°C and commercial 0°C to 70°C).
Category 3: Performance-Enhanced Alternatives (STMicroelectronics J-FET Series) LF253DT and LF353DT offer superior slew rate (16V/µs) and gain bandwidth product (4 MHz) with J-FET input architecture. These are suitable for applications requiring higher speed performance. LF353DT operates at commercial temperature range (0°C to 70°C), while LF253DT extends to -40°C to 105°C.
Category 4: Audio-Optimized Alternative (STMicroelectronics LM833DT) LM833DT is an audio amplifier with higher gain bandwidth product (15 MHz) and faster slew rate (7V/µs), suitable for audio and signal conditioning applications requiring extended bandwidth.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA/pA) | Input Offset (µV/mV) | Supply Current (µA/mA) | Output Current (mA) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|
| OPA2277UAE4 | Texas Instruments | Obsolete | 0.8 | 1 | 4 nA | 20 µV | 790 µA | 35 | -40 to 85 | 8-SOIC |
| OPA2277UA | Texas Instruments | Active | 0.8 | 1 | 4 nA | 20 µV | 790 µA | 35 | -40 to 85 | 8-SOIC |
| AD706ARZ | Analog Devices | Active | 0.15 | 0.8 | 50 pA | 30 µV | 750 µA | 15 | -40 to 85 | 8-SOIC |
| AD706ARZ-REEL | Analog Devices | Active | 0.15 | 0.8 | 50 pA | 30 µV | 750 µA | 15 | -40 to 85 | 8-SOIC |
| AD706ARZ-REEL7 | Analog Devices | Active | 0.15 | 0.8 | 50 pA | 30 µV | 750 µA | 15 | -40 to 85 | 8-SOIC |
| AD706JRZ | Analog Devices | Active | 0.15 | 0.8 | 50 pA | 30 µV | 750 µA | 15 | 0 to 70 | 8-SOIC |
| AD706JRZ-REEL | Analog Devices | Active | 0.15 | 0.8 | 50 pA | 30 µV | 750 µA | 15 | 0 to 70 | 8-SOIC |
| AD706JRZ-REEL7 | Analog Devices | Active | 0.15 | 0.8 | 50 pA | 30 µV | 750 µA | 15 | 0 to 70 | 8-SOIC |
| LF253DT | STMicroelectronics | Active | 16 | 4 | 20 pA | 3 mV | 1.4 mA | 40 | -40 to 105 | 8-SOIC |
| LF353DT | STMicroelectronics | Active | 16 | 4 | 20 pA | 3 mV | 1.4 mA | 40 | 0 to 70 | 8-SOIC |
| LM833DT | STMicroelectronics | Active | 7 | 15 | 300 nA | 300 µV | 4 mA | 37 | -40 to 105 | 8-SOIC |
Engineering Selection Recommendations
For Direct Replacement (Recommended Primary Choice):
OPA2277UA is the active production equivalent manufactured by Texas Instruments. It maintains identical electrical specifications to the OPA2277UAE4 across all critical parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. The device is ROHS3 compliant and REACH unaffected. Operating temperature range (-40°C to 85°C) matches the original specification. This part is available in active production status with substantial inventory (22010 pieces), ensuring long-term supply continuity. Packaging format (Tube) differs from the original (8-SOIC), but this affects only handling and tape-and-reel compatibility, not electrical performance or PCB mounting.
For Supply Voltage and Temperature-Constrained Applications:
AD706ARZ, AD706ARZ-REEL, and AD706ARZ-REEL7 are suitable for designs operating within the full industrial temperature range (-40°C to 85°C). These Analog Devices parts maintain the 4V to 36V supply range and 8-SOIC package compatibility. Electrical differences include lower slew rate (0.15V/µs vs. 0.8V/µs), reduced gain bandwidth product (800 kHz vs. 1 MHz), and significantly lower input bias current (50 pA vs. 4 nA). These characteristics are acceptable for low-frequency, precision signal conditioning applications where input bias current minimization is critical. All three variants are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).
For Commercial Temperature Range Applications:
AD706JRZ, AD706JRZ-REEL, and AD706JRZ-REEL7 operate within the commercial temperature range (0°C to 70°C). These variants are electrically identical to the industrial AD706 series but are suitable only for applications not requiring extended low-temperature operation below 0°C. Inventory availability is substantial (18920 to 26676 pieces across variants).
For High-Speed Applications Requiring Enhanced Performance:
LF253DT (industrial temperature range -40°C to 105°C) and LF353DT (commercial temperature range 0°C to 70°C) employ J-FET input architecture and deliver significantly higher performance: slew rate of 16V/µs (20× faster than OPA2277UAE4), gain bandwidth product of 4 MHz (4× higher), and output current of 40 mA (14% higher). These devices are suitable for applications requiring faster transient response and extended bandwidth. Supply voltage range (6V to 36V minimum) differs from the original (4V minimum), requiring verification for low-voltage applications. Both variants are ROHS3 compliant with unlimited MSL.
For Audio and Wideband Signal Conditioning:
LM833DT is an audio-optimized amplifier with gain bandwidth product of 15 MHz and slew rate of 7V/µs, suitable for audio frequency applications and wideband signal conditioning. Operating temperature range extends to 105°C maximum. Input bias current (300 nA) and input offset voltage (300 µV) are higher than the original, making this device less suitable for precision DC applications. Supply voltage range (5V to 30V) is narrower than the original specification.
Frequently Asked Questions (FAQ)
Q1: Can OPA2277UA be used as a direct drop-in replacement for OPA2277UAE4?
Yes. OPA2277UA is the active production equivalent with identical electrical specifications. Both devices feature the same slew rate (0.8V/µs), gain bandwidth product (1 MHz), input bias current (4 nA), input offset voltage (20 µV), supply current (790 µA per channel), output current (35 mA), and operating temperature range (-40°C to 85°C). The 8-SOIC package and surface mount configuration are identical. The only difference is packaging format (Tube vs. 8-SOIC), which does not affect electrical performance or PCB mounting. OPA2277UA is ROHS3 compliant and available in active production with 22010 pieces in stock.
Q2: What are the key differences between OPA2277UAE4 and AD706 variants?
The primary differences are slew rate, gain bandwidth product, and input bias current. OPA2277UAE4 has slew rate of 0.8V/µs and gain bandwidth product of 1 MHz, while AD706 variants have slew rate of 0.15V/µs and gain bandwidth product of 800 kHz. Input bias current is 4 nA for OPA2277UAE4 versus 50 pA for AD706 variants. Both maintain the same 4V to 36V supply range and 8-SOIC package. AD706 is suitable for low-frequency, precision applications where minimizing input bias current is critical. For applications requiring the original slew rate and bandwidth, OPA2277UA is the preferred choice.
Q3: Which substitute part is suitable for applications requiring extended temperature operation below 0°C?
OPA2277UA, AD706ARZ, AD706ARZ-REEL, AD706ARZ-REEL7, and LF253DT all support the full industrial temperature range of -40°C to 85°C or lower. AD706JRZ variants and LF353DT are limited to commercial temperature range (0°C to 70°C) and are not suitable for applications requiring operation below 0°C. For extended operation to -40°C, select from the industrial-grade variants listed above.
Q4: Are all substitute parts ROHS3 compliant?
Yes. All substitute parts listed—OPA2277UA, AD706 series (all variants), LF253DT, LF353DT, and LM833DT—are ROHS3 compliant and REACH unaffected. This ensures compliance with environmental and hazardous substance regulations across all regions.
Q5: What is the difference between AD706ARZ, AD706ARZ-REEL, and AD706ARZ-REEL7?
These three parts are electrically identical with the same specifications. The differences are in packaging format: AD706ARZ is supplied in Tube packaging, while AD706ARZ-REEL and AD706ARZ-REEL7 are supplied in Cut Tape (CT) and Digi-Reel® format. Selection depends on assembly process requirements. Tube packaging is suitable for manual or small-batch assembly, while tape-and-reel formats are optimized for automated pick-and-place equipment.
Q6: Can LF253DT or LF353DT be used as direct replacements for OPA2277UAE4?
LF253DT and LF353DT are not direct replacements due to significant performance differences. These J-FET input devices have slew rate of 16V/µs (20× faster), gain bandwidth product of 4 MHz (4× higher), and output current of 40 mA (14% higher). They are suitable only for applications requiring higher speed and bandwidth. The minimum supply voltage is 6V (vs. 4V for OPA2277UAE4), which may be incompatible with low-voltage designs. Use these devices only when enhanced performance is required and supply voltage constraints are satisfied.
Q7: Is LM833DT suitable for precision DC signal conditioning applications?
No. LM833DT is optimized for audio and wideband applications. Input bias current (300 nA) and input offset voltage (300 µV) are significantly higher than OPA2277UAE4 (4 nA and 20 µV respectively), making it unsuitable for precision DC applications. LM833DT is recommended only for audio frequency applications and wideband signal conditioning where these specifications are acceptable.
Q8: What is the moisture sensitivity level (MSL) difference between substitute parts?
OPA2277UAE4 has MSL 3 (168 hours), while OPA2277UA has MSL 2 (1 year). All Analog Devices AD706 variants and STMicroelectronics parts (LF253DT, LF353DT, LM833DT) have MSL 1 (unlimited). Lower MSL values indicate better moisture tolerance and longer shelf life. MSL 1 parts require no special moisture control during storage and handling, while MSL 3 parts require more stringent moisture management.
Q9: Which substitute part has the lowest supply current consumption?
AD706 variants have the lowest supply current at 750 µA per channel, compared to 790 µA for OPA2277UAE4. LF253DT and LF353DT consume 1.4 mA per channel, while LM833DT consumes 4 mA. For power-sensitive applications, AD706 variants are the most efficient choice.
Q10: Can substitute parts be mixed in the same design?
Mixing different substitute parts in the same design is not recommended unless the application circuit topology and performance requirements explicitly allow for different electrical characteristics. Designs using OPA2277UAE4 typically depend on specific slew rate, bandwidth, and input bias current specifications. If substitution is necessary, use OPA2277UA for direct compatibility. If performance enhancement is acceptable, use LF253DT or LF353DT consistently across all channels. Mixing parts with different specifications may result in performance inconsistencies and circuit instability.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts