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Texas Instruments OPA2277AIDRMTG4
- Part No.:
- OPA2277AIDRMTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
OPA2277AIDRMTG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,217
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Product details
Overview
OPA2277AIDRMTG4 from Texas Instruments is a dual high-precision operational amplifier designed for low-drift, low-noise signal conditioning in measurement-critical analog front-ends. It delivers 10 µV max input offset voltage, ±0.1 µV/°C drift, 134 dB open-loop gain, and operates from ±2 V to ±18 V supplies - enabling use in weigh scales, temperature transmitters, and precision data acquisition systems.
For engineers reviewing the OPA2277AIDRMTG4 datasheet, OPA2277AIDRMTG4 pinout, OPA2277AIDRMTG4 application, or OPA2277AIDRMTG4 equivalent, this page provides verified package mapping (8-pin VSON-DRM), confirmed dual-channel pin functions, real-world operating limits (–40°C to +85°C), and two validated alternative parts with documented functional trade-offs.
Technical Context
The OPA2277AIDRMTG4 implements a laser-trimmed bipolar input stage with internal bias current cancellation, eliminating need for external compensation resistors. Its architecture ensures unity-gain stability, no phase inversion, and robust performance across ±2 V to ±18 V supply range - with key specs (e.g., CMRR, PSRR, AOL) guaranteed over ±5 V to ±15 V using a single limit.
Each amplifier channel operates independently with <0.1 µV/V channel separation at DC and >115 dB CMRR over –40°C to +85°C. Input protection includes 1-kΩ series resistors and diode clamps, supporting ±30-V differential input tolerance without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±10 µV (max at 25°C); enables sub-16-bit accuracy in 24-bit DAQ without trimming |
| Offset Drift | ±0.1 µV/°C (max over –40°C to +85°C); ensures <1 µV total drift across industrial temp range |
| Open-Loop Gain | 134 dB (min at 25°C); supports <0.001% closed-loop gain error in precision instrumentation |
| CMRR / PSRR | 140 dB / 130 dB (min at 25°C); rejects >100 dB of common-mode or supply noise in noisy environments |
| Quiescent Current | 800 µA per amplifier (max); allows dual-channel precision operation within 1.6 mA total supply budget |
| Supply Range | ±2 V to ±18 V; supports single-supply (4–36 V) or dual-rail operation without performance degradation |
| Input Bias Current | ±1 nA (max at 25°C); minimizes voltage error in high-Z sensor interfaces (e.g., RTD, thermocouple) |
Pinout & Package
OPA2277AIDRMTG4 is packaged in an 8-pin VSON (DRM) with 4.00 mm × 4.00 mm body size and exposed thermal pad connected to V– for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Out A | Output channel A | Low-impedance buffered output; drives 2 kΩ load to within 1.5 V of rails |
| 2 - –In A | Inverting input channel A | Differential input node; accepts signals within (V–)+2 V to (V+)-2 V common-mode range |
| 3 - +In A | Noninverting input channel A | Differential input node; matched thermal and electrical characteristics to –In A |
| 4 - V– | Negative supply rail | Reference for internal circuitry; thermal pad must be soldered to PCB ground plane |
| 5 - +In B | Noninverting input channel B | Independent input for second channel; no crosstalk with channel A under overload |
| 6 - –In B | Inverting input channel B | Matched to +In B; supports fully independent dual-amplifier operation |
| 7 - V+ | Positive supply rail | Power supply connection; requires local 0.1-µF ceramic decoupling |
| 8 - Out B | Output channel B | Separate output stage; maintains >115 dB channel separation up to 100 kHz |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed offset & drift | Eliminates need for external nulling in >95% of precision applications; reduces calibration time and BOM count |
| Internal bias current cancellation | Removes requirement for external Rcomp; avoids added offset/noise from resistor mismatch and thermal EMFs |
| Unity-gain stable, no phase reversal | Enables direct use in follower, integrator, and active filter configurations without stability analysis or compensation |
| ±30-V differential input protection | Withstands transient overvoltage events in industrial I/O modules without latch-up or parametric shift |
| Guaranteed spec over ±5 V to ±15 V | Single datasheet limit applies across full industrial supply range - simplifies design validation and qualification |
Applications
| Analog Input Module | Weigh Scale |
|---|---|
Use Scenario: Signal conditioning of 4–20 mA or 0–10 V industrial sensor outputs with 24-bit ADC interface. IC Role / Device Role / Timing Role: Dual-channel precision op amp providing programmable gain, offset correction, and drive capability for sigma-delta ADC reference and input paths. Use Value: 10 µV offset and 0.1 µV/°C drift ensure <±0.005% full-scale error over temperature without recalibration. |
Use Scenario: Amplification and filtering of millivolt-level bridge outputs from strain gauge load cells. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier front-end (configured as difference amplifier) rejecting common-mode noise from long cable runs. Use Value: 0.22 µVPP (0.1–10 Hz) noise and 140 dB CMRR suppress thermal EMF and EMI-induced errors in microvolt-level measurements. |
| Temperature Transmitter | Data Acquisition (DAQ) |
Use Scenario: Linearization and cold-junction compensation for thermocouple inputs in HART-enabled field transmitters. IC Role / Device Role / Timing Role: Precision voltage reference buffer and thermocouple signal amplifier with programmable gain and filtering. Use Value: 800 µA per amplifier enables dual-channel operation within 4–20 mA loop power budget while maintaining <0.1°C accuracy. |
Use Scenario: High-resolution sensor signal conditioning in portable or benchtop DAQ systems with multi-channel simultaneous sampling. IC Role / Device Role / Timing Role: Dual-channel signal conditioner for anti-aliasing, gain, and level-shifting prior to SAR or sigma-delta ADCs. Use Value: Independent channel architecture prevents crosstalk during overdrive recovery, preserving integrity of adjacent channel measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2182IDR | Lower 1/f noise (0.03 µVPP), higher GBW (5.7 MHz), but higher quiescent current (1.3 mA/ch) | Better for wideband precision applications (e.g., fast DAQ), less suitable for ultra-low-power battery-operated sensors | Select OPA2182IDR when bandwidth >1 MHz and noise <0.1 µVPP are required; accept 60% higher supply current |
| AD8676ARZ | Higher offset drift (±0.2 µV/°C), lower PSRR (114 dB), same SOIC-8 package but no VSON option | Suitable for cost-sensitive lab equipment where VSON thermal performance is not critical | Select AD8676ARZ only if SOIC-8 footprint is mandatory and ±0.2 µV/°C drift is acceptable in target temperature range |
Compared with OPA2277AIDRMTG4, OPA2182IDR trades lower noise and higher speed for increased power consumption, while AD8676ARZ offers legacy SOIC compatibility at the expense of drift and PSRR performance - making OPA2277AIDRMTG4 optimal for thermally constrained, low-drift industrial signal chains.
Availability
OPA2277AIDRMTG4 is available at Aetrix Electronics and suitable for analog input modules, weigh scales, and temperature transmitters requiring stable component supply across extended industrial temperature ranges and multi-year production cycles.
Supply support for OPA2277AIDRMTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op amp design and manufacturing.
The OPAx277 product line was engineered specifically for high-accuracy industrial measurement systems - targeting applications where offset, drift, noise, and long-term stability dominate system error budgets.
FAQ
What is the maximum supply voltage for OPA2277AIDRMTG4?
The OPA2277AIDRMTG4 supports a total supply voltage (V+ to V–) up to 36 V, corresponding to dual supplies of ±18 V or single supplies from 4 V to 36 V. Absolute maximum ratings specify continuous operation up to this limit, with full electrical performance guaranteed from ±2 V to ±18 V per the datasheet's Recommended Operating Conditions table.
Does OPA2277AIDRMTG4 require external offset trim?
No - the OPA2277AIDRMTG4 does not provide external offset trim pins. Unlike the single-channel OPA277 (which has trim pins 1 and 8), the dual-channel OPA2277 variants including OPA2277AIDRMTG4 are laser-trimmed during manufacturing and omit trim connections. External adjustment is unnecessary for most applications given its ±10 µV max offset and ±0.1 µV/°C drift.
What is the thermal pad connection requirement for OPA2277AIDRMTG4?
The exposed thermal pad on the bottom of the OPA2277AIDRMTG4's DRM (VSON-8) package must be soldered to a PCB copper area connected to the V– (negative supply) net. This connection is mandatory for thermal performance and reliability - it lowers junction-to-board thermal resistance to 15.4°C/W and prevents overheating under sustained 800 µA per amplifier operation.
Can OPA2277AIDRMTG4 drive capacitive loads?
Yes - the OPA2277AIDRMTG4 is unity-gain stable and can safely drive up to 1500 pF without oscillation, as verified in Figure 6-19 of the datasheet. For loads >1500 pF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended to maintain phase margin and prevent overshoot in step response.
Is OPA2277AIDRMTG4 pin-compatible with other OPA2277 variants?
Yes - all OPA2277 variants in the same package type share identical pinouts. The OPA2277AIDRMTG4 (VSON-8) uses the same pin configuration as the OPA2277AIDR (SOIC-8) and OPA2277P (PDIP-8), with pins 1–8 assigned identically to Out A, –In A, +In A, V–, +In B, –In B, V+, and Out B per Table 5-2 of the datasheet.
OPA2277AIDRMTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 nA
- Voltage - Input Offset:
- 35 µV
- Current - Supply:
- -
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSON (4x4)
OPA2277AIDRMTG4 FAQ
1.How can I place an order for OPA2277AIDRMTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2277AIDRMTG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA2277AIDRMTG4 reliable?
The price and inventory of OPA2277AIDRMTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2277AIDRMTG4 is usually 5 days.
3.What payment methods are accepted for OPA2277AIDRMTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2277AIDRMTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2277AIDRMTG4?
OPA2277AIDRMTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2277AIDRMTG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA2277AIDRMTG4?
For technical support, including OPA2277AIDRMTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2277AIDRMTG4 requirements.
6.How does Aetrix verify that OPA2277AIDRMTG4 is sourced from the original manufacturer or authorized distributors?
All OPA2277AIDRMTG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA2277AIDRMTG4 meets industry standards.
7.What is the process for return or replacement of OPA2277AIDRMTG4?
All OPA2277AIDRMTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2277AIDRMTG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA2277AIDRMTG4 part is unused and in its original packaging.
Return procedure for OPA2277AIDRMTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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