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Texas Instruments OPA1677DBVT
- Part No.:
- OPA1677DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA1677DBVT.pdf
- Description:
- LOW DISTORTION (-120 DB), LOW NO
- Quantity:
- Payment:
- Shipping:
Inventory:825
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Product details
Overview
OPA1677DBVT from Texas Instruments is a single-channel, rail-to-rail output audio operational amplifier optimized for high-fidelity signal conditioning. It delivers 4.5 nV/√Hz input voltage noise at 1 kHz, 0.0001% THD+N at 1 kHz into 2 kΩ, and 114 dB open-loop gain, enabling low-noise preamplification in professional microphone front-ends and instrument amplifiers.
For engineers reviewing the OPA1677DBVT datasheet, OPA1677DBVT pinout, OPA1677DBVT application, or OPA1677DBVT equivalent, this device supports ±2.25 V to ±18 V dual-supply operation with 2 mA quiescent current per channel, unity-gain stability, and phase-reversal protection - critical for robust audio signal chain design under overdrive conditions.
Technical Context
The OPA1677DBVT employs a folded-cascode input stage paired with a Class AB rail-to-rail output stage, achieving simultaneous low noise (4.5 nV/√Hz) and ultra-low distortion (0.0001% THD+N). Its internal phase-reversal protection prevents output inversion when inputs exceed common-mode limits, unlike legacy audio op amps.
This architecture enables stable operation at G = 1 with 16 MHz gain-bandwidth and 9 V/µs slew rate while maintaining >110 dB CMRR and PSRR across 10 Hz–100 kHz - essential for high dynamic range in analog audio paths with varying supply and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise density | 4.5 nV/√Hz at 1 kHz - enables clean gain in mic preamp stages without audible hiss |
| THD+N | 0.0001% at 1 kHz, 3 VRMS, 2 kΩ load - preserves harmonic integrity in line-level audio paths |
| Open-loop gain | 114 dB - ensures <0.001% gain error in precision buffer and filter applications |
| Slew rate | 9 V/µs - supports full-swing 20 kHz sine wave at 2.8 VRMS without slewing distortion |
| Supply range | ±2.25 V to ±18 V (or 4.5 V to 36 V) - accommodates battery-powered portable gear and fixed-rail A/V receivers |
| Quiescent current | 2 mA per channel - balances performance and power efficiency in multi-channel systems |
| Input bias current | 10 pA typical - minimizes DC offset drift in high-impedance sensor interfaces |
| Channel separation | –130 dB at 1 kHz - prevents crosstalk in stereo or multi-channel audio routing |
Pinout & Package
OPA1677DBVT is packaged in a 5-pin SOT-23 (DBV) surface-mount package with exposed pad for thermal enhancement. The package measures 2.9 mm × 1.6 mm × 1.1 mm and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Rail-to-rail output capable of swinging within 800 mV of either rail into 2 kΩ - maximizes headroom in single-supply designs |
| 2 | V– | Negative supply terminal - must be connected to lowest system potential; thermal pad tied to V– for optimal thermal performance |
| 3 | +IN | Noninverting input - high-impedance node (6 GΩ || 2 pF) suitable for passive filter interfaces |
| 4 | –IN | Inverting input - matched to +IN for balanced feedback networks and low offset error |
| 5 | V+ | Positive supply terminal - accepts up to ±18 V; PSRR >110 dB suppresses supply ripple in sensitive analog stages |
Key Features
| Feature | Design Value |
|---|---|
| Phase-reversal protection | Prevents output inversion during input overdrive beyond common-mode range - eliminates latch-up risk in noninverting configurations |
| Rail-to-rail output swing | Swings to within 800 mV of V+ or V– into 2 kΩ - extends usable dynamic range by ≥1.6 Vpp vs conventional op amps |
| Unity-gain stability | Stable at G = 1 with no external compensation required - simplifies PCB layout for buffers and active filters |
| Low input bias current | 10 pA typical - reduces voltage drop across high-value feedback resistors, preserving gain accuracy |
| Wide supply flexibility | Operates from ±2.25 V to ±18 V or 4.5 V to 36 V - supports both low-voltage portable devices and high-headroom studio gear |
| ESD robustness | HBM ±2000 V, CDM ±1000 V - withstands handling and board assembly without special ESD precautions |
Applications
| Professional Microphone Preamp | Guitar Instrument Amplifier |
|---|---|
Use Scenario: Low-noise amplification of condenser microphone capsule output before ADC conversion in field recorders. IC Role / Device Role / Timing Role: Single-channel transimpedance and gain-stage amplifier with DC-coupled input and rail-to-rail output drive. Use Value: 4.5 nV/√Hz noise floor ensures >110 dB SNR in 20 Hz–20 kHz bandwidth, preserving subtle vocal harmonics and transient detail. |
Use Scenario: High-fidelity tone-shaping and buffer stage in analog guitar pedal signal path before power amp section. IC Role / Device Role / Timing Role: Unity-gain stable voltage follower and active filter driver with low THD+N and wide bandwidth. Use Value: 0.0001% THD+N at 1 kHz prevents harmonic smearing of guitar harmonics; 16 MHz GBW supports crisp high-frequency response up to 100 kHz. |
| A/V Receiver Line-Level Stage | Automotive External Audio Amplifier |
Use Scenario: Input buffer and level-matching stage in multi-source home theater receiver before DSP processing. IC Role / Device Role / Timing Role: Dual-supply (±15 V) line driver with high PSRR to reject switching noise from adjacent digital subsystems. Use Value: 110 dB PSRR at 1 kHz rejects power supply ripple from SMPS-based audio subsystems, preventing audible hum modulation. |
Use Scenario: Signal conditioning front-end in OEM automotive external amplifier module receiving analog source signals. IC Role / Device Role / Timing Role: Robust input amplifier tolerant of automotive temperature range (–40°C to +85°C) and supply transients. Use Value: Guaranteed operation at –40°C to +85°C with <2.8 mA max IQ ensures reliable performance in under-hood amplifier enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1612AIDR | Lower noise (1.1 nV/√Hz), dual-channel, higher IQ (4.6 mA/ch), SOIC-8 only | Better suited for ultra-low-noise dual-path applications (e.g., stereo preamps); not pin-compatible with OPA1677DBVT | Select for highest SNR where power budget allows; requires PCB redesign due to different package and pinout |
| NE5532DR | Higher noise (5 nV/√Hz), higher THD+N (0.005%), ±20 V max supply, no rail-to-rail output | Legacy industrial audio use; lacks phase-reversal protection and modern ESD rating | Acceptable for cost-sensitive, non-critical audio paths where 110 dB SNR suffices and supply rails exceed ±12 V |
Compared with OPA1677DBVT, OPA1612AIDR offers superior noise performance but doubles quiescent current and requires SOIC-8 layout; NE5532DR provides proven reliability in high-voltage analog systems but sacrifices fidelity, rail-to-rail capability, and modern protection features.
Availability
OPA1677DBVT is available at Aetrix Electronics and suitable for professional audio mixer/control surfaces, guitar instrument amplifiers, and A/V receiver line-level stages requiring stable component supply with guaranteed long-term availability.
Supply support for OPA1677DBVT 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 leadership in high-performance audio signal chain components.
The OPA167x family was designed specifically for professional and high-end consumer audio applications demanding ultra-low noise, ultra-low distortion, and robust operation across wide supply and temperature ranges.
FAQ
What is the maximum capacitive load the OPA1677DBVT can drive stably?
The OPA1677DBVT maintains stable operation with up to 100 pF capacitive load at unity gain, as verified by phase margin >45° in Figure 6-25 of the datasheet. Driving larger loads requires isolation resistance or careful compensation; exceeding 100 pF may cause overshoot or ringing in the OPA1677DBVT step response.
Does the OPA1677DBVT require external compensation for unity-gain operation?
No, the OPA1677DBVT is internally compensated for unity-gain stability and operates reliably at G = 1 without external components. Its 16 MHz gain-bandwidth and 9 V/µs slew rate are fully specified under unity-gain conditions, making the OPA1677DBVT ideal for buffer and active filter applications.
How does the OPA1677DBVT handle input overdrive beyond the common-mode range?
The OPA1677DBVT incorporates internal phase-reversal protection that clamps the output at the appropriate rail instead of inverting it when inputs exceed the linear common-mode range. This behavior is confirmed in Figure 7-1 and prevents catastrophic failure or signal corruption in noninverting configurations during transient overdrive events.
What is the thermal pad connection requirement for the OPA1677DBVT (DBV package)?
The exposed thermal pad on the OPA1677DBVT DBV package must be soldered to a PCB copper pour connected to the V– (negative supply) net. This connection lowers junction-to-board thermal resistance to 47.3°C/W and ensures the OPA1677DBVT meets its specified electrical performance and reliability over temperature.
Can the OPA1677DBVT operate from a single 5-V supply?
Yes, the OPA1677DBVT supports single-supply operation from 4.5 V to 36 V. At 5 V, it delivers rail-to-rail output swing (within 800 mV of each rail), 0.0001% THD+N at 1 kHz, and maintains full functionality across –40°C to +85°C - making the OPA1677DBVT suitable for portable USB-powered audio interfaces.
OPA1677DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Audio
- Number of Circuits:
- 1
- Output Type:
- Push-Pull
- Slew Rate:
- 9V/µs
- Gain Bandwidth Product:
- 16 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 2mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA1677DBVT FAQ
1.How can I place an order for OPA1677DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA1677DBVT 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 OPA1677DBVT reliable?
The price and inventory of OPA1677DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA1677DBVT is usually 5 days.
3.What payment methods are accepted for OPA1677DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA1677DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA1677DBVT?
OPA1677DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA1677DBVT 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 OPA1677DBVT?
For technical support, including OPA1677DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA1677DBVT requirements.
6.How does Aetrix verify that OPA1677DBVT is sourced from the original manufacturer or authorized distributors?
All OPA1677DBVT 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 OPA1677DBVT meets industry standards.
7.What is the process for return or replacement of OPA1677DBVT?
All OPA1677DBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA1677DBVT, 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 OPA1677DBVT part is unused and in its original packaging.
Return procedure for OPA1677DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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