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運算放大器 (op amps)
音訊運算放大器

OPA2134

現行

具有低失真、低雜訊和精密的 SoundPlus™ 音訊運算放大器

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OPA2141 現行 雙路、10-MHz、單電源供電、低雜訊、JFET 精密放大器 Lower voltage noise (6.5 nV/√Hz) and lower input bias current (2pA, typ) with slightly higher offset voltage (3.5mV, max)

OPA2134

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 8 Slew rate (typ) (V/µs) 20 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 2 Iq per channel (typ) (mA) 4 Vn at 1 kHz (typ) (nV√Hz) 8 Features Burr-Brown™ Audio, Premium Sound THD + N at 1 kHz (typ) (%) 0.00008 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.04 Architecture FET CMRR (typ) (dB) 100 Input bias current (max) (pA) 100
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 8 Slew rate (typ) (V/µs) 20 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 2 Iq per channel (typ) (mA) 4 Vn at 1 kHz (typ) (nV√Hz) 8 Features Burr-Brown™ Audio, Premium Sound THD + N at 1 kHz (typ) (%) 0.00008 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.04 Architecture FET CMRR (typ) (dB) 100 Input bias current (max) (pA) 100
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm)
  • Excellent sound quality
  • Ultra-low distortion: 0.00008%
  • Low noise: 8nV/√Hz
  • True FET-input: IB = 5pA
  • High speed:
    • Slew rate: 20V/µs
    • Bandwidth: 8MHz
  • High open-loop gain: 120dB (2kΩ)
  • Wide supply range: ±2.5V to ±18V
  • Single, dual, and quad versions
  • Excellent sound quality
  • Ultra-low distortion: 0.00008%
  • Low noise: 8nV/√Hz
  • True FET-input: IB = 5pA
  • High speed:
    • Slew rate: 20V/µs
    • Bandwidth: 8MHz
  • High open-loop gain: 120dB (2kΩ)
  • Wide supply range: ±2.5V to ±18V
  • Single, dual, and quad versions

The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. This feature, in combination with high output drive capability and excellent dc performance, allows for use in a wide variety of demanding applications. In addition, the OPAx134 series has a wide output swing, to within 1V of the rails, allowing increased headroom and making these devices an excellent choice for use in any audio circuit.

The OPAx134 SoundPlus™ audio operational amplifiers are easy to use and free from phase-inversion and the overload problems often found in common FET-input operational amplifiers. The devices can be operated from ±2.5V to ±18V power supplies. Input cascode circuitry provides excellent common-mode rejection and maintains low input bias current over the wide input voltage range, minimizing distortion. The OPAx134 series operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions, including high load capacitance. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

Single and dual versions are available in 8-pin DIP and SO-8 surface-mount packages in standard configurations. The quad is available in SO-14 surface-mount package. All are specified for –40°C to +85°C operation. A SPICE macromodel is available for design analysis.

The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. This feature, in combination with high output drive capability and excellent dc performance, allows for use in a wide variety of demanding applications. In addition, the OPAx134 series has a wide output swing, to within 1V of the rails, allowing increased headroom and making these devices an excellent choice for use in any audio circuit.

The OPAx134 SoundPlus™ audio operational amplifiers are easy to use and free from phase-inversion and the overload problems often found in common FET-input operational amplifiers. The devices can be operated from ±2.5V to ±18V power supplies. Input cascode circuitry provides excellent common-mode rejection and maintains low input bias current over the wide input voltage range, minimizing distortion. The OPAx134 series operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions, including high load capacitance. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

Single and dual versions are available in 8-pin DIP and SO-8 surface-mount packages in standard configurations. The quad is available in SO-14 surface-mount package. All are specified for –40°C to +85°C operation. A SPICE macromodel is available for design analysis.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 OPAx134 High-Performance, SoundPlus™ Audio Operational Amplifiers datasheet (Rev. B) PDF | HTML 2024/11/19
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 2021/6/14
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
類比設計期刊 Stabilizing difference amplifiers for headphone applications 2015/4/28
類比設計期刊 Reducing distortion from CMOS analog switches 2015/1/29
類比設計期刊 Distortion and source impedance in JFET-input op amps 2014/10/24
應用說明 Remove the DC Portion of Signals with the ADS7817 2000/9/27

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開發板

AMP-PDK-EVM — 放大器性能開發套件評估模組

放大器性能開發套件 (PDK) 是一款評估模組 (EVM) 套件，可測試通用運算放大器 (op amp) 參數，並與大多數運算放大器和比較器相容。EVM 套件提供主板和多個插槽式子卡選項，可滿足封裝需求，使工程師能夠快速評估和驗證裝置性能。

AMP-PDK-EVM 套件支援五種最熱門的業界標準封裝，包括：

  • D (SOIC-8 和 SOIC-14)
  • PW (TSSOP-14)
  • DGK (VSSOP-8)
  • DBV (SOT23-5 和 SOT23-6)
  • DCK (SC70-5 和 SC70-6)
使用指南: PDF | HTML
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子卡

AUDK2G — 66AK2Gx (K2G) 音訊子卡

K2G 音訊子卡是為了與 K2G 通用 EVM (EVMK2G) 或 EVMK2GX 配合使用而設計的，音訊子卡的操作需要 EVMK2G 或 EVMK2GX。  此子卡可讓使用者開發多聲道音訊應用，例如以 66AKG2G02 DSP + Arm® 處理器 SoC 為基礎的 A/V 接收器、音響、汽車擴大器系統和混音控制台。

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模擬型號

OPAx134 PSpice Model (Rev. F)

SBOM042F.ZIP (30 KB) - PSpice 模型
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模擬型號

OPAx134 TINA-TI Reference Design (Rev. F)

SBOC185F (318 KB) - TINA-TI 參考設計
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模擬型號

OPAx134 TINA-TI Spice Model (Rev. F)

SBOM264F.ZIP (11 KB) - TINA-TI Spice 模型
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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參考設計

TIDEP0038 — 視覺分析 OMAPL-138 架構硬體/軟體參考設計

視覺分析是許多工業自動化應用的重要功能，包括機器視覺、檢查自動化、監控及影像處理。  此硬體/軟體設計套件針對視覺分析架構的應用進行最佳化，可提供所有硬體設計元素，以及以 C、C++ 為基礎的基礎軟體，讓參考設計快速啟動並執行，還可讓開發人員靈活地專注在新增與眾不同的應用演算法和功能。

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參考設計

TIDEP0040 — 軟體無線電技術 (SDR) OMAPL-138 架構硬體與軟體參考設計

軟體定義無線電 (SDR) 是無線基礎建設市場中一個熱門的應用。  此硬體參考設計利用 TI DSP 的即時訊號處理能力及其通用平行連接埠 (uPP)，搭配 TI ADC 和 DAC，為 SDR 演算法開發者提供一個快速的平台，以加速演算法與解決方案的開發與展示。

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PDIP (P) 8 Ultra Librarian
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