INA134UA - Unity-Gain Audio Receiver | Texas Instruments
MPN: INA134UA ✓ NakahandaINA134UA Ulas
A differential line receiver is a special-purpose amplifier that rejects common-mode voltage and interference while amplifying the voltage difference between two signal inputs. In the amplifier hierarchy, the INA134UA is a differential receiver, then an audio amplifier, then an analog signal-conditioning IC. It is commonly used where a balanced source must feed an unbalanced input without introducing excessive noise, distortion, or ground-related errors.
Key features include a fixed gain of 1 V/V, low distortion of 0.0005% at 1 kHz, a high slew rate of 14 V/µs, high CMRR of 90 dB, and maximum quiescent current of 2.9 mA. The wide supply range supports single-ended operation from 4 V to 18 V or dual supplies up to ±18 V. The manufacturer specifically identifies the device for high-performance audio applications.
Technically, the INA134UA combines high-performance operational amplifiers with precision on-chip resistors in a fixed unity-gain configuration. Its differential input arrangement suppresses signal common to both inputs, while the fast slew rate supports dynamic audio waveforms. Wide output-voltage swing and strong output drive make the receiver useful between professional audio sources and downstream single-ended stages, although the exact output-drive and settling values must be confirmed in the manufacturer datasheet.
Typical uses include professional audio consoles, balanced line inputs, mixer stages, studio preamplifier interfaces, broadcast equipment, and audio adapter boards. In these systems, the receiver can preserve a balanced source over a cable run and provide a clean single-ended signal for mixing or monitoring. The same features also suit instrumentation interfaces where cable pickup and ground-offset rejection are important.
When designing around the INA134UA, verify input and output common-mode limits for the selected supply arrangement and confirm that downstream circuitry accepts a single-ended output. Keep input and output return paths short, use a stable reference ground for the source and receiver, and avoid placing high-current digital return paths beneath the audio input region. The 8-pin SOIC footprint also requires an appropriate thermal assessment if the output stage operates near its voltage limits.
This product page consolidates verified manufacturer and distributor information, identifies genuine drop-in alternatives, and adds practical selection, layout, and signal-integrity guidance for engineers evaluating the INA134UA in audio and instrumentation systems.
Mga alternatibo na pwedeng ilagay na INA134UA — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok INA134UA (parehas na form factor at footprint) — pagkakaiba sa Gain, Number of Channels, Package.
INA134A
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
INA134U
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
INA134UAG4
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
INA134UAE4
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
INA137UA
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →INA134UA Mga Pinakamataas na Rating at Electrical Characteristics
| Product Type | Audio differential line receiver |
| Number of Channels | 1 channel |
| Gain | 1 V/V |
| Distortion | 0.0005% at 1 kHz |
| Slew Rate | 14 V/µs |
| CMRR | 90 dB |
| Maximum Quiescent Current | 2.9 mA |
| Minimum Total Supply Voltage | 4 V |
| Maximum Total Supply Voltage | 36 V |
| Dual-Supply Operating Range | ±18 V |
| Typical Dual-Supply Configurations | ±5 V, ±9 V, ±12 V, or ±15 V |
| Packhaging | 8-pin SOIC |
| Uri ng Pagpapasok | Surface mount |
| Input Configuration | Differential |
| Output Kumpigurasyon | Single-ended |
| Integrated Precision Resistors | Yes |
| Application | High-performance audio |
Pin Configuration ng INA134UA
| Pin 1 | VO+ — Non-inverting output |
| Pin 2 | VO- — Inverting output |
| Pin 3 | V- — Negative supply or ground connection for single-supply operation |
| Pin 4 | IN- — Inverting differential input |
| Pin 5 | IN+ — Non-inverting differential input |
| Pin 6 | V+ — Positive supply connection |
| Pin 7 | NC — Not connected |
| Pin 8 | NC — Not connected |
Tipikal na mga Gamit
INA134UA ay nararapat para sa 6 aplikasyons: Professional Audio Line Input, Studio Monitoring Interface, Broadcast and Mixer Input, Balanced Instrumentation Input, Balanced Audio Adapter Board, Audio Test and Measurement.
Professional Audio Line Input
The INA134UA fits a professional balanced-line input because it receives the difference between two audio conductors while the specified 90 dB CMRR helps reject common-mode noise. Its unity gain of 1 V/V preserves signal level, while the 0.0005% distortion at 1 kHz supports clean audio reproduction. The receiver converts the balanced source to a single-ended output for a mixer, console, or monitoring block. The design must keep source and receiver grounds compatible, route the differential pair together, and verify downstream input headroom.
Inirekomenda
Studio Monitoring Interface
The INA134UA can provide the analog input stage of a studio monitoring interface when a balanced source must feed a single-ended control or amplifier circuit. Its 14 V/µs slew rate supports fast-changing audio transients, and its low 0.0005% distortion at 1 kHz helps minimize coloration in critical listening paths. Place the receiver close to the input connector, maintain a continuous return path, and use the available ±5 V, ±9 V, ±12 V, or ±15 V supply arrangements according to the rest of the signal chain.
Inirekomenda
Broadcast and Mixer Input
The INA134UA is suitable for broadcast consoles and mixer input strips because differential reception reduces sensitivity to common-mode interference picked up by external cables. The fixed 1 V/V gain avoids external gain-setting components, while 90 dB CMRR and 14 V/µs slew rate support practical audio-band performance. In a multi-channel console, keep input routing compact and avoid sharing noisy return paths with the receiver. Confirm output swing and output drive against the next amplifier stage before finalizing the analog gain structure.
Inirekomenda
Balanced Instrumentation Input
The INA134UA can condition a balanced low-frequency instrumentation signal when the system needs differential input rejection but no adjustable gain. Its 90 dB CMRR reduces errors caused by voltage shared across the two input conductors, while unity gain simplifies signal scaling. The documented 4 V minimum and ±18 V maximum dual-supply capability provide useful supply flexibility. Verify the source amplitude, allowable common-mode range, and downstream reference level before adoption, because the verified data does not specify input common-mode limits.
Inirekomenda
Balanced Audio Adapter Board
The INA134UA is well suited to a small balanced-audio adapter that converts professional balanced connections to an unbalanced consumer or semi-professional input. Its unity gain keeps the adapter transparent, and the 8-pin SOIC package supports straightforward surface-mount assembly. The adapter should include input protection appropriate to the connector and cable environment, plus supply decoupling close to the device. Because the verified information does not specify maximum input voltage, use separate protection rather than assuming the receiver can tolerate arbitrary connector overvoltage.
Inirekomenda
Audio Test and Measurement
The INA134UA can form the input receiver in an audio test system that evaluates a balanced source against a single-ended measurement reference. The 0.0005% distortion at 1 kHz, 90 dB CMRR, and 14 V/µs slew rate provide useful documented performance indicators for bench characterization. Keep the differential route away from switching nodes and establish a low-impedance reference ground for downstream instrumentation. Where accuracy depends on gain calibration, the fixed 1 V/V gain avoids resistor-ratio tolerance but does not remove offset, noise, or system-level calibration errors.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for INA134UA — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | INA134A | INA134U | INA134UAG4 | INA134UAE4 | INA137UA |
|---|---|---|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin PDSO8 | 8-pin PDSO8 | 8-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
Pangunahing mga Pagkakaiba
- Documented unity-gain differential audio reception (kumpara saINA137UA)
- Low distortion specified at 1 kHz (kumpara saINA134A)
- Fast dynamic response for audio signals (kumpara saINA134U)
- Strong common-mode rejection (kumpara saINA134UAG4)
Talaan ng Disenyo
Route IN+ and IN- as a closely coupled differential pair, with continuous reference ground beneath the pair where the board stack-up permits. Keep the receiver away from switching-node returns, high-current relay paths, and digital clock routing. Place input protection and connector termination ahead of the receiver rather than allowing external cable transients to reach the SOIC pins directly.
Decouple each supply connection locally with capacitors selected according to the manufacturer datasheet's recommended network and the impedance of the source. In dual-supply operation, V- and V+ require independent local return paths. Keep the supply reference close to the device ground and avoid sharing a narrow return segment with mixer output, power-amplifier, or digital switching currents.
Treat VO+ and VO- as a pair even though the receiver provides a single-ended output function for its intended application. Route both output conductors away from noisy nets, maintain consistent return paths, and confirm the downstream load impedance. Do not infer safe input or output voltage limits from the 36 V maximum supply because those operating limits are not included in the verified data.
A common design error is assuming that CMRR alone eliminates all cable and grounding problems. Differential reception rejects voltage common to both inputs, but it does not correct improperly connected balanced sources, unbalanced source-pin assignments, or excessive ground potential differences. Verify connector polarity, source impedance, downstream loading, and supply polarity before energizing the circuit.
Impormasyon ng Pagsunod sa Kautusan
The verified excerpts do not state the INA134UA's RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred.