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Texas Instruments OPA2134UAE4
- Part No.:
- OPA2134UAE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2134UAE4.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,263
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Product details
Overview
OPA2134UAE4 from Texas Instruments is a dual-channel, FET-input audio operational amplifier optimized for high-fidelity signal conditioning in professional and consumer audio systems. It delivers ultra-low THD+N (0.00008% at 1kHz), low input voltage noise (8nV/√Hz), and high slew rate (20V/µs) with rail-to-rail output swing within 1.5V of supply rails under 2kΩ load - enabling clean headroom in line-level driver and preamplifier stages.
For engineers reviewing the OPA2134UAE4 datasheet, OPA2134UAE4 pinout, OPA2134UAE4 application, or OPA2134UAE4 equivalent, this page provides verified specifications, SOIC-8 package layout, channel-isolated dual-amplifier architecture details, and real-world audio circuit implementation guidance - all grounded in TI's SBOS058B production data sheet.
Technical Context
The OPA2134UAE4 implements a true JFET-input differential pair with cascoded input stage, delivering 5pA typical input bias current and >100dB CMRR across –12.5V to +11.5V common-mode range. Its unity-gain-stable, fully compensated design supports stable operation into 100pF capacitive loads without external compensation.
Each amplifier channel operates independently with no crosstalk coupling - confirmed by 128dB DC channel separation and >126dB at 20kHz - making it suitable for stereo-pair configurations where inter-channel integrity is critical, such as balanced line receivers and active crossover networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| THD+N | 0.00008% at 1kHz, 3Vrms, 2kΩ load - enables transparent signal reproduction below human audibility threshold |
| Slew Rate | 20V/µs - supports full-swing transient response up to 1.3MHz full-power bandwidth without slewing distortion |
| Input Voltage Noise | 8nV/√Hz at 1kHz - preserves dynamic range in low-source-impedance microphone and line-level stages |
| Open-Loop Gain | 120dB at 2kΩ load - ensures <0.001% gain error in precision gain-setting circuits with feedback resistors ≤100kΩ |
| Supply Range | ±2.5V to ±18V - accommodates both portable battery-powered (±3V) and studio-grade (±15V) audio rails |
| Output Swing | Within 1.5V of rails at 2kΩ - delivers 21.3dBu headroom at ±18V supply, exceeding CD-standard 2.0Vrms line level |
| Channel Separation | 128dB DC, 126dB at 20kHz - prevents audible crosstalk in stereo summing, panning, or dual-mono monitoring paths |
Pinout & Package
OPA2134UAE4 is housed in an 8-pin SOIC (SO-8) surface-mount package with standard pin spacing (1.27mm pitch) and JEDEC MS-012AC footprint. Thermal resistance is RθJA = 160°C/W, supporting continuous operation at ambient temperatures up to +85°C with minimal heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load; capable of sourcing 36mA/sinking 30mA |
| 2 | –IN A | Inverting input, channel A - virtual ground node in standard inverting configurations |
| 3 | +IN A | Noninverting input, channel A - high-impedance (1013Ω) node requiring matched source impedance for lowest distortion |
| 4 | V– | Negative power supply - must be bypassed with ≥10nF ceramic capacitor near pin |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from channel A; identical specs and layout rules apply |
| 6 | –IN B | Inverting input, channel B - independent of channel A; no internal coupling or shared biasing |
| 7 | OUT B | Amplifier B output - fully independent output stage; supports simultaneous drive of separate loads |
| 8 | V+ | Positive power supply - requires local 10nF+ ceramic decoupling to suppress supply-induced noise |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Operates safely with inputs extended 10V beyond supply rails - eliminates latch-up risk in voltage-follower or unity-gain buffer applications |
| FET input stage | 5pA max input bias current at 25°C - enables high-impedance sensor interfacing and passive filter integration without DC error |
| Rail-swing output | Drives to within 1.5V of V+ and V– at 2kΩ - maximizes usable output voltage range in ±15V systems (±13.5V swing) |
| Unity-gain stable | Requires no external compensation - simplifies PCB layout and reduces component count in gain-of-1 and gain-of-10 configurations |
| Low inter-channel crosstalk | 128dB DC channel separation - maintains stereo image fidelity in dual-channel line drivers and active filters |
Applications
| Professional Audio Line Driver | Studio-Grade Preamplifier |
|---|---|
Use Scenario: Driving long analog interconnects between mixing console outputs and powered monitor inputs over 10m shielded cable. IC Role / Device Role / Timing Role: Dual-channel voltage buffer with high output drive (36mA) and low output impedance (<0.01Ω closed-loop) to maintain signal integrity against cable capacitance. Use Value: 0.00008% THD+N and 126dB channel separation prevent audible coloration and crosstalk, preserving stereo imaging in critical listening environments. |
Use Scenario: Low-noise gain stage amplifying microphone signals (200Ω–2kΩ source) before ADC conversion in digital audio workstations. IC Role / Device Role / Timing Role: First-stage noninverting amplifier with matched 1kΩ input/feedback network to minimize distortion from JFET input capacitance variation. Use Value: 8nV/√Hz input voltage noise dominates total system noise floor, achieving >110dB SNR with 2kΩ source impedance and 40dB gain. |
| Active Crossover Network | High-Fidelity Line Receiver |
Use Scenario: Splitting full-range speaker signals into low/mid/high bands using 2nd-order Sallen-Key filters in bi/tri-amped loudspeaker systems. IC Role / Device Role / Timing Role: Dual op-amp implementing independent low-pass and high-pass filter sections with identical gain and phase response. Use Value: Unity-gain stability and 8MHz GBW ensure flat amplitude and linear phase response up to 20kHz, preserving transient accuracy in time-aligned drivers. |
Use Scenario: Receiving balanced XLR-derived line-level signals (via external instrumentation amp) in audio interface inputs with 10kΩ termination. IC Role / Device Role / Timing Role: Single-ended post-conditioning amplifier providing precise 1× gain, DC blocking, and output buffering before ADC front-end. Use Value: 5pA input bias current avoids loading passive RC networks; 120dB open-loop gain ensures <0.001% gain error with 1% tolerance resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134PA | Same silicon die, PDIP-8 through-hole package; higher RθJA (71°C/W vs 160°C/W); no moisture sensitivity level (MSL) rating | Preferred for prototyping, hand-soldered evaluation, or legacy through-hole designs; unsuitable for reflow-only production | Select OPA2134PA only when board assembly process mandates through-hole mounting or thermal derating allows higher junction temperature |
| NE5532DR | Bipolar input; higher THD+N (0.002% typ), higher input bias current (800nA), lower PSRR (70dB), but higher output current (38mA) | Better suited for high-current headphone drivers or legacy equipment where cost and availability outweigh fidelity requirements | Choose NE5532DR only when budget constraints dominate and measured THD+N >0.001% is acceptable in target application |
Compared with OPA2134UAE4, the OPA2134PA offers identical electrical performance in a through-hole package but lacks MSL compliance and has inferior thermal dissipation, while the NE5532DR trades significant audio fidelity (10× higher distortion, 160× higher input bias) for cost and output current - making OPA2134UAE4 the optimal choice for fidelity-critical dual-channel audio signal paths.
Availability
OPA2134UAE4 is available at Aetrix Electronics and suitable for professional audio equipment, studio recording interfaces, and high-end consumer audio systems requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for OPA2134UAE4 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-amps and audio signal chain solutions.
The OPA2134UAE4 belongs to TI's SoundPlus™ audio op-amp product line, engineered specifically for ultra-low-distortion, low-noise audio signal conditioning in professional and high-fidelity consumer applications.
FAQ
What is the maximum recommended supply voltage for OPA2134UAE4?
The OPA2134UAE4 supports dual-supply operation from ±2.5V to ±18V, with absolute maximum ratings specifying ±18V as the upper limit. Operation beyond ±18V risks permanent damage per TI's SBOS058B datasheet Section 5.1. For reliable long-term use in studio gear, ±15V is the most commonly validated and thermally sustainable condition.
Does OPA2134UAE4 require external compensation capacitors?
No, the OPA2134UAE4 is unity-gain stable and does not require external compensation. Its internal compensation ensures stable operation down to G = 1 with capacitive loads up to 100pF, as verified in Figure 5-20 and Section 7.1 of the datasheet. Adding external compensation may degrade bandwidth and transient response.
How does OPA2134UAE4 handle input overvoltage conditions?
The OPA2134UAE4 features diode-clamped inputs rated for ±0.5V beyond supply rails, with absolute maximum input voltage specified as (V–) – 0.5V to (V+) + 0.5V. Exceeding this requires external current limiting to ≤10mA. Critically, it exhibits no phase reversal even with inputs driven 10V beyond rails - a key reliability advantage over legacy FET op-amps like OP176.
Can OPA2134UAE4 drive 600Ω loads effectively?
Yes - the OPA2134UAE4 delivers 0.00015% THD+N into 600Ω at 1kHz (Section 5.7), with output swing limited to ±13.5V at ±15V supply. Its 36mA sourcing/30mA sinking capability ensures stable drive into reactive or low-Z loads, though thermal considerations require attention at sustained high output levels in SOIC-8 packaging.
Is OPA2134UAE4 pin-compatible with other dual op-amps in SOIC-8?
OPA2134UAE4 follows standard SOIC-8 pinout for dual op-amps (pin 1 = OUT A, pin 2 = –IN A, pin 3 = +IN A, pin 4 = V–, pin 5 = +IN B, pin 6 = –IN B, pin 7 = OUT B, pin 8 = V+), matching industry conventions. However, electrical behavior (e.g., FET input, no phase reversal, ultra-low noise) is not replicated by generic SOIC-8 dual op-amps - direct substitution requires validation of THD+N, noise, and input stage compatibility.
OPA2134UAE4 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:
- 2
- 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 (x2 Channels)
- 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
OPA2134UAE4 FAQ
1.How can I place an order for OPA2134UAE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2134UAE4 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 OPA2134UAE4 reliable?
The price and inventory of OPA2134UAE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2134UAE4 is usually 5 days.
3.What payment methods are accepted for OPA2134UAE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2134UAE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2134UAE4?
OPA2134UAE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2134UAE4 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 OPA2134UAE4?
For technical support, including OPA2134UAE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2134UAE4 requirements.
6.How does Aetrix verify that OPA2134UAE4 is sourced from the original manufacturer or authorized distributors?
All OPA2134UAE4 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 OPA2134UAE4 meets industry standards.
7.What is the process for return or replacement of OPA2134UAE4?
All OPA2134UAE4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2134UAE4, 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 OPA2134UAE4 part is unused and in its original packaging.
Return procedure for OPA2134UAE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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