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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
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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 日期
* Data sheet OPAx134 High-Performance, SoundPlus™ Audio Operational Amplifiers datasheet (Rev. B) PDF | HTML 2024年 11月 19日
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 2021年 6月 14日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
Analog Design Journal Stabilizing difference amplifiers for headphone applications 2015年 4月 28日
Analog Design Journal Reducing distortion from CMOS analog switches 2015年 1月 29日
Analog Design Journal Distortion and source impedance in JFET-input op amps 2014年 10月 24日
Application note Remove the DC Portion of Signals with the ADS7817 2000年 9月 27日

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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 Model
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模擬型號

OPAx134 TINA-TI Reference Design (Rev. F)

SBOC185F.TSC (318 KB) - TINA-TI Reference Design
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OPAx134 TINA-TI Spice Model (Rev. F)

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

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

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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參考設計

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