My Inquiry
My Account
Texas Instruments OPA134UAG4
- Part No.:
- OPA134UAG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA134UAG4.pdf
- Description:
- IC AUDIO 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,883
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA134UAG4 from Texas Instruments is a single-channel, high-performance audio operational amplifier featuring ultra-low distortion (0.00008% THD+N at 1kHz), low input voltage noise (8nV/√Hz), and true FET-input architecture with 5pA input bias current. It operates from ±2.5V to ±18V supplies, delivers 20V/µs slew rate and 8MHz gain bandwidth, and is optimized for professional line-level signal conditioning in studio-grade audio equipment.
For engineers reviewing the OPA134UAG4 datasheet, OPA134UAG4 pinout, OPA134UAG4 application, or OPA134UAG4 equivalent, key selection criteria include its verified 0.00008% THD+N at 1kHz/2kΩ, rail-to-rail output swing within 1.5V of supply rails, unity-gain stability, absence of phase reversal, and SOIC-8 packaging suitable for high-fidelity analog signal paths.
Technical Context
The OPA134UAG4 employs a fully differential JFET input stage enabling exceptional common-mode rejection (100dB typ) and stable low input bias current across its full ±13.5V common-mode range. Its internal compensation ensures unity-gain stability while supporting capacitive loads up to 100pF without oscillation.
It features independent output stage design delivering ±36mA sourcing and ±30mA sinking capability, with thermal shutdown protection and robust ESD tolerance (±2000V HBM). The device maintains <0.01% THD+N up to 11.7Vrms output into 2kΩ - a headroom of 23.6dBu - validated under ±18V supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| THD+N | 0.00008% at 1kHz, 3Vrms, 2kΩ load - enables transparent signal amplification in critical audio paths without audible coloration |
| Slew Rate | 20V/µs - supports clean reproduction of fast transients in wideband audio signals up to 20kHz |
| Gain Bandwidth | 8MHz - allows stable operation at gains ≥1 with sufficient phase margin for feedback networks in active filters and preamps |
| Input Voltage Noise | 8nV/√Hz at 1kHz - minimizes contribution to system noise floor in low-source-impedance microphone and line-level stages |
| Supply Range | ±2.5V to ±18V - accommodates both portable battery-powered and high-headroom studio power architectures |
| Output Swing | Within 1.5V of rails at 2kΩ - provides >21dBu usable headroom into standard line loads, reducing clipping risk |
| Open-Loop Gain | 120dB at 2kΩ load - ensures high loop gain for precise DC accuracy and low distortion in closed-loop configurations |
Pinout & Package
OPA134UAG4 is housed in an 8-pin SOIC (SOIC-8) surface-mount package with standard D-package footprint and thermal characteristics (RθJA = 160°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect | Internally unconnected; must be left floating per TI specification |
| 2 | Inverting Input (–IN) | Differential input node; virtual ground in inverting configurations |
| 3 | Noninverting Input (+IN) | Differential input node; reference point for noninverting gain setting |
| 4 | Negative Supply (V–) | Low-side power rail connection; requires local 10nF ceramic bypass |
| 5 | No Connect | Internally unconnected; must be left floating per TI specification |
| 6 | Output (OUT) | Class-AB output stage capable of ±36mA drive into 2kΩ load |
| 7 | Positive Supply (V+) | High-side power rail connection; requires local 10nF ceramic bypass |
| 8 | No Connect | Internally unconnected; must be left floating per TI specification |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low THD+N | 0.00008% at 1kHz enables audibly transparent amplification in mastering and monitoring circuits |
| FET input stage | 5pA input bias current preserves signal integrity in high-impedance sensor and passive filter interfaces |
| No phase reversal | Immune to output polarity inversion when inputs exceed common-mode range - critical for voltage-follower stability |
| Rail-swing output | Delivers >21dBu headroom into 2kΩ, maximizing dynamic range in line driver/receiver applications |
| Unity-gain stable | Operates reliably at G = 1 without external compensation, simplifying design of buffers and active crossovers |
Applications
| Professional Audio Line Driver | Studio Preamplifier Stage |
|---|---|
Use Scenario: Driving balanced XLR outputs from digital audio workstations or analog mixing consoles over 10m cable runs. IC Role / Device Role / Timing Role: High-output-current, low-distortion voltage buffer with 20V/µs slew rate ensuring transient fidelity. Use Value: Maintains <0.00015% THD+N into 600Ω loads and delivers 21.3dBu headroom, preventing inter-sample clipping in 24-bit/192kHz systems. |
Use Scenario: First-stage gain block in microphone preamplifiers requiring low-noise, high-CMRR signal conditioning before ADC. IC Role / Device Role / Timing Role: Low-noise, laser-trimmed op amp with 8nV/√Hz input voltage noise and 100dB CMRR at DC. Use Value: Achieves <1.2µVrms integrated noise (20Hz–20kHz) and ±1mV max VOS, preserving SNR in 120dB+ dynamic range front ends. |
| Active Crossover Network | Multimedia Audio Line Receiver |
Use Scenario: Implementing steep-slope (24dB/octave) Linkwitz-Riley filters in bi/tri-amped loudspeaker systems. IC Role / Device Role / Timing Role: Unity-gain stable, low-phase-error amplifier for precision Sallen-Key and MFB filter topologies. Use Value: Delivers flat group delay and <0.01° phase shift at 1kHz, preserving time alignment between woofer/midrange/tweeter bands. |
Use Scenario: Receiving unbalanced consumer audio signals (e.g., from DACs or media players) into powered monitors or AV receivers. IC Role / Device Role / Timing Role: High-input-impedance (1013Ω), low-bias-current buffer rejecting ground-loop induced hum. Use Value: Provides 128dB channel separation and 90dB PSRR, eliminating crosstalk and power-supply noise in multi-channel playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134UA | Dual-channel version in same SOIC-8 package; identical per-channel specs but shares thermal mass and supply pins | Better suited for stereo line drivers or dual-path active filters where channel matching and layout symmetry matter | Select OPA2134UA only when dual-channel integration reduces board area or improves channel-to-channel tracking |
| NE5532AP | Bipolar input (200nA IB), higher THD+N (0.002%), lower slew rate (9V/µs), but higher output drive (±38mA) | Preferred in cost-sensitive pro-audio power amps or summing mixers where DC precision is secondary to output current | Choose NE5532AP for legacy designs or high-current drive needs; avoid where ultra-low noise/distortion is mandatory |
Compared with OPA134UAG4, the OPA2134UA offers space savings in stereo applications but introduces shared supply coupling, while the NE5532AP trades measurable audio performance for ruggedness and cost - making OPA134UAG4 optimal for fidelity-critical signal chains where every 0.0001% THD+N matters.
Availability
OPA134UAG4 is available at Aetrix Electronics and suitable for professional audio equipment, studio monitor electronics, and high-end multimedia audio systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA134UAG4 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 precision op amp design and audio signal chain innovation.
The OPA134UAG4 belongs to TI's SoundPlus™ audio op amp product line, engineered specifically for ultra-low-noise, ultra-low-distortion analog signal conditioning in recording, mastering, and playback systems where sonic transparency is non-negotiable.
FAQ
What is the maximum output voltage swing of the OPA134UAG4?
The OPA134UAG4 delivers a minimum output swing of ±13.5V into a 2kΩ load when operated on ±15V supplies - i.e., within 1.5V of each rail. At ±18V supplies, it achieves >21dBu headroom (11.7Vrms) while maintaining THD+N < 0.01%, as confirmed in TI's SBOS058B datasheet Figure 5-4. This rail-swing capability directly supports high-dynamic-range line-level interfaces without clipping.
Does the OPA134UAG4 require external compensation for unity-gain stability?
No, the OPA134UAG4 is internally compensated for unity-gain stability and operates reliably with closed-loop gains ≥1 without external components. TI's datasheet explicitly states this in Section 6.4.1 and validates stability into 100pF capacitive loads - a key advantage over many FET-input op amps that require gain-dependent compensation.
What is the input bias current specification for the OPA134UAG4 over temperature?
The OPA134UAG4 specifies ±5pA typical input bias current at 25°C, with worst-case ±100pA over the full –40°C to +85°C operating range (Section 5.7, "INPUT BIAS CURRENT"). Its JFET input architecture ensures minimal drift - Figure 5-15 shows IB remains below 10pA across –25°C to +75°C, critical for high-impedance sensor and passive filter interfaces.
Can the OPA134UAG4 be used in single-supply applications?
Yes, the OPA134UAG4 supports single-supply operation from 5V to 36V (Section 5.3). When used in single-supply mode, the input common-mode range extends from (V–) + 2.5V to (V+) – 3.5V, and output swings to within 1.2V of the positive rail and 0.5V of ground (Section 5.7, "OUTPUT"). Proper level-shifting and biasing are required for AC-coupled signal paths.
How does the OPA134UAG4 handle overload or phase-reversal conditions?
The OPA134UAG4 is explicitly designed to eliminate phase reversal - a failure mode common in many FET-input op amps. As stated in Section 6.2.4, it remains stable even when inputs exceed the common-mode range by ±10V. Additionally, its output current is internally limited to ±36mA sourcing/sinking (Section 6.2.5), preventing latch-up during short-circuit events without external protection.
OPA134UAG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SoundPlus™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Audio
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 4mA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA134UAG4 FAQ
1.How can I place an order for OPA134UAG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA134UAG4 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 OPA134UAG4 reliable?
The price and inventory of OPA134UAG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA134UAG4 is usually 5 days.
3.What payment methods are accepted for OPA134UAG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA134UAG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA134UAG4?
OPA134UAG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA134UAG4 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 OPA134UAG4?
For technical support, including OPA134UAG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA134UAG4 requirements.
6.How does Aetrix verify that OPA134UAG4 is sourced from the original manufacturer or authorized distributors?
All OPA134UAG4 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 OPA134UAG4 meets industry standards.
7.What is the process for return or replacement of OPA134UAG4?
All OPA134UAG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA134UAG4, 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 OPA134UAG4 part is unused and in its original packaging.
Return procedure for OPA134UAG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA134UAG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
