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Texas Instruments OPA177GS/2K5E4
- Part No.:
- OPA177GS/2K5E4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA177GS/2K5E4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,599
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Product details
Overview
OPA177GS/2K5E4 from Texas Instruments is a precision bipolar operational amplifier optimized for low-offset, low-drift, low-noise instrumentation applications. It delivers 25 µV max input offset voltage, 0.3 µV/°C max offset drift, 134 dB min open-loop gain, and operates from ±3 V to ±18 V dual supply (6–36 V single supply), serving as a direct replacement for OP-07, OP-77, and AD707 in high-stability analog front-ends.
For engineers reviewing the OPA177GS/2K5E4 datasheet, OPA177GS/2K5E4 pinout, OPA177GS/2K5E4 application, or OPA177GS/2K5E4 equivalent, key selection criteria include guaranteed offset drift ≤0.3 µV/°C over –40°C to +85°C, laser-trimmed input bias current cancellation enabling unbalanced input resistances, and SOIC-8 packaging with validated thermal resistance of 160°C/W.
Technical Context
The OPA177GS/2K5E4 uses a laser-trimmed bipolar input stage with internal input bias current cancellation, eliminating the need for external balancing resistors and reducing thermoelectric error sources. Its architecture supports unity-gain stability and achieves 0.4–0.6 MHz closed-loop bandwidth at G = 1.
It features integrated 500-Ω series input resistors and diode clamps enabling ±30-V differential input tolerance without damage, while maintaining 85 nVrms (0.1–100 Hz) input voltage noise and 45 pArms input current noise - optimized for source impedances between 2 kΩ and 50 kΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input offset voltage | ±25 µV max (F grade) - enables sub-100-µV system-level DC error without trimming |
| Offset voltage drift | ±0.3 µV/°C max (F grade, –40°C to +85°C) - ensures <1 µV total drift over 30°C ambient shift |
| Open-loop gain | 134 dB min - provides ≥200,000 V/V loop gain for high-precision closed-loop configurations |
| Supply voltage range | ±3 V to ±18 V dual (6–36 V single) - supports industrial rails including ±15 V and 24 V systems |
| Input bias current | ±2 nA max (F grade) - allows use with >100 kΩ sensor source impedances without significant DC error |
| Quiescent current | 1.3 mA typ - minimizes self-heating and warm-up drift in battery-powered DAQ modules |
| Common-mode range | ±13 V min (vs. ±15 V supply) - supports rail-to-rail input operation with 2-V headroom |
Pinout & Package
OPA177GS/2K5E4 is supplied in an 8-pin SOIC (D package), 4.9 mm × 6 mm body size, moisture sensitivity level 3 (260°C peak reflow, 168 hr floor life), with NiPdAu lead finish and RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +In (Pin 3) | Noninverting input | High-impedance (≥26 MΩ diff, 200 GΩ common-mode) node for reference or sensor signal routing |
| −In (Pin 2) | Inverting input | Matched input impedance path; no external bias resistor required due to internal cancellation |
| V+ (Pin 7) | Positive power supply | Accepts up to +18 V (dual) or +36 V (single); decoupling capacitor recommended within 1 cm |
| V− (Pin 4) | Negative power supply | Accepts down to –18 V (dual) or ground (single); shares thermal path with output stage |
| VO (Pin 6) | Output | Capable of ±13.5 V swing into 2-kΩ load; short-circuit protected to ±35 mA |
| Offset Trim (Pins 1 & 8) | Offset adjustment terminals | Optional 20-kΩ potentiometer connection; trim range ±3 mV - unused pins must float |
| No Connect (Pin 5) | Unused terminal | No internal connection; must remain unconnected and unbonded on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed offset & drift | Eliminates factory calibration and external nulling circuitry, reducing BOM count and board area in precision transmitters |
| Internal input bias current cancellation | Enables direct connection to asymmetric sensor networks (e.g., RTD 3-wire bridges) without matching resistors or added noise |
| Low 1/f noise (85 nVrms, 0.1–100 Hz) | Maintains signal integrity in slow-sampling temperature and strain measurement systems where flicker noise dominates |
| ±30-V differential input tolerance | Withstands transient overvoltage events in PLC analog input modules without external protection components |
| Unity-gain stable architecture | Guarantees stable operation without compensation capacitors in buffer, integrator, or gain-of-one configurations |
Applications
| Analog Input Module | Data Acquisition (DAQ) |
|---|---|
Use Scenario: High-channel-count industrial I/O module accepting ±10 V sensor signals with 16-bit ADC interface. IC Role / Device Role / Timing Role: Precision op amp configured as programmable-gain amplifier and anti-aliasing filter driver. Use Value: 0.3 µV/°C drift ensures <1 LSB error over full temperature range when paired with 16-bit, 100-kSPS SAR ADC. | Use Scenario: Portable battery-powered DAQ unit measuring thermocouple, RTD, and bridge outputs. IC Role / Device Role / Timing Role: Low-power, low-drift front-end amplifier with cold-junction compensation and ratiometric excitation. Use Value: 1.3 mA quiescent current extends battery life while 25 µV offset enables <0.1°C resolution in Class A RTD measurements. |
| Battery Test System | Temperature Transmitter |
Use Scenario: Automated test equipment applying precise current pulses to Li-ion cells and measuring voltage response. IC Role / Device Role / Timing Role: High-accuracy current-sense amplifier and voltage monitor in four-quadrant source-measure unit. Use Value: 134 dB open-loop gain ensures <0.01% gain error across 100-dB dynamic range during pulse discharge profiling. | Use Scenario: 4–20 mA HART-enabled transmitter converting RTD or thermistor readings in hazardous environments. IC Role / Device Role / Timing Role: Signal conditioner isolating sensor input, performing linearization, and driving current loop. Use Value: Laser-trimmed long-term drift (0.3 µV/month) meets SIL-2 functional safety requirements for 5-year field calibration intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA206IDR | Integrated ±40-V overvoltage protection; higher 1.1 µV/°C drift (max); 1.8 mA IQ | Required where inputs face sustained >±30-V fault conditions (e.g., motor drive feedback) | Select OPA206IDR only if input overvoltage protection is mandatory; otherwise OPA177GS/2K5E4 offers lower drift and noise |
| AD707JRZ-REEL7 | Higher 10 µV offset (max); same 0.3 µV/°C drift; 1.2 mA IQ; PDIP/SOIC-8 | Legacy drop-in replacement where AD707 footprint compatibility is required | Choose AD707JRZ-REEL7 for backward-compatible upgrades; OPA177GS/2K5E4 preferred for new designs requiring tighter offset spec |
Compared with OPA206IDR and AD707JRZ-REEL7, the OPA177GS/2K5E4 delivers the lowest combination of offset voltage (±25 µV max) and drift (±0.3 µV/°C max) in SOIC-8, making it optimal for high-stability, low-noise instrumentation where input protection is handled externally.
Availability
OPA177GS/2K5E4 is available at Aetrix Electronics and suitable for analog input modules, data acquisition systems, and temperature transmitters requiring stable component supply, long-term calibration retention, and industrial-grade thermal performance.
Supply support for OPA177GS/2K5E4 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPA177 product line targets high-accuracy, low-drift instrumentation applications - including sensor signal conditioning, precision voltage references, and metrology-grade measurement systems - where laser-trimmed bipolar architecture delivers superior DC performance versus chopper-stabilized alternatives.
FAQ
What is the maximum operating temperature range for the OPA177GS/2K5E4?
The OPA177GS/2K5E4 is specified for operation from –40°C to +85°C ambient temperature. Electrical characteristics including offset drift (±0.3 µV/°C max), input bias current (±2 nA max), and open-loop gain (134 dB min) are guaranteed across this full industrial temperature range per the TI SBOS008A datasheet revision September 2023.
Does the OPA177GS/2K5E4 require external offset nulling in typical applications?
No, the OPA177GS/2K5E4 does not require external offset nulling in most applications because it features laser-trimmed input offset voltage (±25 µV max) and drift (±0.3 µV/°C max). The offset trim pins (1 and 8) are provided for optional fine adjustment using a 20-kΩ potentiometer, but leaving them unconnected maintains full specified performance and avoids introducing thermal drift errors.
Can the OPA177GS/2K5E4 be used with single-supply operation?
Yes, the OPA177GS/2K5E4 supports single-supply operation from 6 V to 36 V. Its input common-mode range extends to within 2 V of the negative rail and its output swings to within 1.5 V of both rails under 2-kΩ load, enabling use in 12 V or 24 V industrial systems with appropriate level-shifting or rail-splitting networks for bipolar signal handling.
What is the thermal resistance (θJA) of the OPA177GS/2K5E4 in its SOIC-8 package?
The junction-to-ambient thermal resistance (θJA) of the OPA177GS/2K5E4 in the SOIC-8 (D) package is 160.0°C/W, as specified in Section 6.4 of the TI SBOS008A datasheet. This value assumes standard JEDEC 2-layer board conditions and informs thermal design for continuous operation at full quiescent current (2.5 mA max over temperature).
How does the OPA177GS/2K5E4 handle input overvoltage conditions?
The OPA177GS/2K5E4 incorporates 500-Ω series input resistors and diode clamps that protect against ±30-V differential input overvoltage without damage. While robust, these clamps may affect slewing in unity-gain followers during overdrive; for applications requiring sustained >±30-V tolerance (e.g., PLC I/O), TI recommends the OPA206 family instead.
OPA177GS/2K5E4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 600 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 1.3mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA177GS/2K5E4 FAQ
1.How can I place an order for OPA177GS/2K5E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA177GS/2K5E4 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 OPA177GS/2K5E4 reliable?
The price and inventory of OPA177GS/2K5E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA177GS/2K5E4 is usually 5 days.
3.What payment methods are accepted for OPA177GS/2K5E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA177GS/2K5E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA177GS/2K5E4?
OPA177GS/2K5E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA177GS/2K5E4 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 OPA177GS/2K5E4?
For technical support, including OPA177GS/2K5E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA177GS/2K5E4 requirements.
6.How does Aetrix verify that OPA177GS/2K5E4 is sourced from the original manufacturer or authorized distributors?
All OPA177GS/2K5E4 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 OPA177GS/2K5E4 meets industry standards.
7.What is the process for return or replacement of OPA177GS/2K5E4?
All OPA177GS/2K5E4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA177GS/2K5E4, 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 OPA177GS/2K5E4 part is unused and in its original packaging.
Return procedure for OPA177GS/2K5E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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