INA2134UA - 0dB Audio Differential Receiver | Texas Instruments
MPN： INA2134UA ✓ 啟用中INA2134UA 概覽
A differential receiver is an analog signal-conditioning circuit that accepts a pair of complementary or balanced inputs and produces a single output proportional to their difference. The INA2134 family uses high-performance operational amplifiers with on-chip precision resistors. This integrated approach simplifies balanced audio input design and reduces the need for external matched resistor networks. Its differential architecture is part of the broader special-purpose amplifier and signal-conditioning IC hierarchy.
The INA2134UA provides 0.0005% distortion at 1 kHz, a 14 V/µs slew rate, and a fixed gain of 1 V/V. The manufacturer specifies a wide supply range of ±18 V and low quiescent current of 2.9 mA maximum. Its high common-mode rejection helps reject shared noise and interference on balanced audio lines, while fast settling and slew-rate performance support dynamic audio signals.
The device is offered in single and dual versions, with INA2134UA providing two receiver channels. The 14-pin SOIC package provides a practical surface-mount option for balanced audio preamplifiers, mixer stages, instrument interfaces, and other low-frequency analog systems. The INA2134UA is also specified for operation from -40°C to +85°C, covering the extended industrial temperature range.
When using the INA2134UA, preserve the balanced signal path and connect the appropriate input and output decoupling capacitors close to the device pins. Verify source impedance, output loading, cable termination, and common-mode voltage before finalizing the analog layout. Proper grounding and symmetrical routing are important for maximizing common-mode rejection and minimizing distortion.
This product page combines the manufacturer specifications, sourcing guidance, drop-in alternatives, application fit, and practical PCB considerations to support faster component selection and design review. It is intended to help engineers identify the correct package, compare suitable alternatives, and implement a stable balanced-audio front end without treating the receiver as a general-purpose precision amplifier.
直接替換替代品，適用於 INA2134UA — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： INA2134UA （相同外形與佔位） — 差異在於 Number of Channels, Package, Product Type, RoHS Status.
INA2134UAG4
✅ 直接替換📋 參考替代品（不在目錄中）
INA2134MDREP
✅ 直接替換📋 參考替代品（不在目錄中）
INA2134UA 最大額定值與電氣特性
| Product Type | Dual audio differential line receiver |
| Number of Channels | 2 channels |
| Voltage Gain | 1 V/V (0 dB) |
| Total Harmonic Distortion plus Noise | 0.0005% at 1 kHz |
| Slew Rate | 14 V/µs |
| Supply Voltage Range | ±18 V |
| 靜態電流 | 2.9 mA maximum |
| Common-Mode Rejection Ratio | 90 dB minimum |
| Output Swing | Wide output voltage swing |
| Output Drive Capability | High output drive |
| 工作溫度範圍 | -40°C to +85°C |
| 封裝 | 14-pin SOIC |
| 安裝類型 | Surface mount |
| Integrated Elements | High-performance operational amplifiers with on-chip precision resistors |
| Settling Time | 0.01% settling specification |
| RoHS 狀態 | RoHS compliant |
| Automotive Qualification | Not specified |
INA2134UA 14-pin soic 腳位配置指南
INA2134UA（14-pin soic 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： INA2134UA.
請參閱 資料表 以查看完整腳位配置。
典型應用
INA2134UA 適用於 6 應用s: Balanced Audio Preamplifier, Professional Audio Mixer Input, Balanced Instrument Interface, Audio Measurement and Test Equipment, Studio Monitor Input Conditioning, Low-Frequency Differential Sensor Interface.
Balanced Audio Preamplifier
The INA2134UA fits the input stage of a balanced audio preamplifier because its fixed 1 V/V gain preserves the incoming level while its 0.0005% distortion at 1 kHz supports high-fidelity signal handling. Two integrated receiver channels can process left- and right-channel balanced inputs in one 14-pin SOIC. The 14 V/µs slew rate provides strong dynamic response, while the 90 dB minimum CMRR helps suppress noise shared by both conductors of a balanced cable. Place supply-decoupling capacitors close to the device and maintain symmetrical input routing to preserve rejection performance.
推薦
Professional Audio Mixer Input
Professional audio mixers often receive balanced line-level signals from microphones, instruments, and playback equipment, making the INA2134UA a practical front-end choice. Its unity gain avoids changing the nominal line level, while integrated precision resistors eliminate an external matched-divider network. The 2.9 mA maximum quiescent current supports power-conscious signal paths, and the 0.0005% distortion at 1 kHz limits added coloration. Engineers should verify connector grounding, input common-mode limits, and output loading against the mixer channel requirements.
推薦
Balanced Instrument Interface
The INA2134UA can serve as the receiver stage in a balanced low-frequency instrument interface where common-mode rejection and low distortion are important. Its 90 dB minimum CMRR reduces interference picked up equally by both input conductors, while the 14 V/µs slew rate supports musical transients and fast line-level changes. The fixed 1 V/V gain provides a predictable conversion from differential input to single-ended output without external gain-setting components. Confirm the instrument output amplitude, source impedance, and required input bandwidth before selecting external coupling and protection components.
推薦
Audio Measurement and Test Equipment
For audio measurement equipment, the INA2134UA can receive a balanced test signal while limiting common-mode pickup and preserving waveform fidelity. The combination of 0.0005% distortion at 1 kHz, 0.01% settling performance, and 14 V/µs slew rate supports accurate low-frequency measurements and fast signal transitions. Because the device has fixed unity gain, a following stage must provide range scaling if higher instrument output is required. Use short, symmetrical signal paths and check the output-swing limits for the selected supply voltage.
推薦
Studio Monitor Input Conditioning
The INA2134UA is suitable for conditioning balanced studio-monitor inputs where a clean, low-distortion unity-gain conversion is required. Its high CMRR helps reject ground-potential differences and shared cable noise, while the two channels support paired monitor sources in one package. The wide ±18 V supply capability accommodates appropriately centered dual-rail analog systems. Layout should keep the two channels geometrically similar, minimize loop area, and route inputs as balanced pairs to avoid converting common-mode interference into differential signal.
推薦
Low-Frequency Differential Sensor Interface
The INA2134UA may be used for low-frequency differential sensor interfaces when a unity-gain, high-CMRR receiver is appropriate. The 90 dB minimum common-mode rejection can improve recovery of a small differential signal riding on a larger common-mode voltage, and integrated precision resistors simplify the differential network. Its audio-oriented bandwidth should be checked against the sensor's signal rate. Engineers must also confirm input bias-current effects, source impedance, output swing, and supply voltage before using it outside conventional balanced-audio sources.
推薦
推薦產品摘要
工程參考資料，適用於 INA2134UA — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | INA2134UAG4 | INA2134MDREP |
|---|---|---|---|
| Package | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 2 channels | 2 channels | 2 channels |
| Voltage Gain | 1 V/V | 1 V/V | 1 V/V |
| THD plus Noise at 1 kHz | 0.0005% | 0.0005% | 0.0005% |
| Minimum CMRR at RS = 0 Ω | 90 dB | 74 dB | 74 dB |
| Ordering Configuration | INA2134UA | Alternate INA2134 suffix configuration | Alternate INA2134 qualification configuration |
主要差異化特點
- Integrated precision-resistor receiver network (對比INA2134UAG4)
- Same 14-pin SOIC drop-in footprint (對比INA2134MDREP)
- Purpose-built balanced-audio signal conditioning (對比AD8276)
設計說明
Route each balanced input pair as a tightly coupled differential pair, with identical geometry and layer transitions on the two conductors. Keep the receiver's input pins away from switching nodes and high-current return paths. Because common-mode rejection depends on the symmetry of the receiver network and signal path, unequal input impedance or trace length can reduce the practical rejection achieved in a real PCB.
Place the required input and output bypass capacitors immediately adjacent to their corresponding supply and ground pins. Follow the capacitor values and placement guidance in the manufacturer application circuit. For dual-rail operation, decouple each supply separately and keep return-current paths short. Adequate bypassing helps preserve the low-distortion and high-slew-rate performance of the internal operational amplifiers.
Do not treat the AD8276, MAX4198, or LT1994 functional alternatives as board-level drop-ins without a package and pin audit. These parts may implement differential amplification through a different topology, pin arrangement, gain-setting method, or package. Confirm the SOIC-14 footprint, supply limits, common-mode range, output swing, bandwidth, and required external components before approving a replacement.
The INA2134UA is intended for audio and low-frequency differential signals, so verify the source bandwidth and cable-induced noise rather than assuming high-frequency performance. Keep input-node capacitance balanced and use a stable source termination when driving the receiver from a cable or converter. The 14 V/µs slew rate supports fast signal transitions, but circuit bandwidth and output loading still determine the usable response.
合規資訊
The Xecor comparison record identifies INA2134UA as RoHS SOIC-14. The INA2134 family is specified for the extended industrial temperature range of -40°C to +85°C.