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放大器
運算放大器 (op amps)
音訊運算放大器

OPA1622

現行

具有高性能、低 THD+N 和雙極輸入的 SoundPlus™ 音訊運算放大器

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產品規格表

OPA1622

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) 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 32 Slew rate (typ) (V/µs) 10 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 2.6 Vn at 1 kHz (typ) (nV√Hz) 2.8 Features Burr-Brown™ Audio, High Cload Drive, Premium Sound, Shutdown, Small Size THD + N at 1 kHz (typ) (%) 0.000018 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.145 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 127 Input bias current (max) (pA) 2000000
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 32 Slew rate (typ) (V/µs) 10 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 2.6 Vn at 1 kHz (typ) (nV√Hz) 2.8 Features Burr-Brown™ Audio, High Cload Drive, Premium Sound, Shutdown, Small Size THD + N at 1 kHz (typ) (%) 0.000018 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.145 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 127 Input bias current (max) (pA) 2000000
VSON (DRC) 10 9 mm² 3 x 3
  • High-Fidelity Sound Quality
  • Ultralow Noise: 2.8 nV/√Hz at 1 kHz
  • Ultralow Total Harmonic Distortion + Noise:
    –119 dB THD+N (142 mW/Ch into 32 Ω/Ch)
  • Wide Gain Bandwidth Product:
    32 MHz (G = +1000)
  • High Slew Rate: 10 V/µs
  • High Capacitive-Load Drive Capability: > 600 pF
  • High Open-Loop Gain: 136 dB (600-Ω Load)
  • Low Quiescent Current: 2.6 mA per Channel
  • Low-Power Shutdown Mode With Reduced Pop
    and Click Noise: 5 µA per Channel
  • Short-Circuit Protection
  • Wide Supply Range: ±2 V to ±18 V
  • Available in small VSON-10 µPackage
  • High-Fidelity Sound Quality
  • Ultralow Noise: 2.8 nV/√Hz at 1 kHz
  • Ultralow Total Harmonic Distortion + Noise:
    –119 dB THD+N (142 mW/Ch into 32 Ω/Ch)
  • Wide Gain Bandwidth Product:
    32 MHz (G = +1000)
  • High Slew Rate: 10 V/µs
  • High Capacitive-Load Drive Capability: > 600 pF
  • High Open-Loop Gain: 136 dB (600-Ω Load)
  • Low Quiescent Current: 2.6 mA per Channel
  • Low-Power Shutdown Mode With Reduced Pop
    and Click Noise: 5 µA per Channel
  • Short-Circuit Protection
  • Wide Supply Range: ±2 V to ±18 V
  • Available in small VSON-10 µPackage

The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2.8-nV/√Hz noise density with an ultralow THD+N of –119.2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 ideal for use in portable-audio applications. This device also has a high output-drive capability of +145 mA / –130 mA.

The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2.6 mA of supply current per channel. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. The OPA1622 includes a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 5 µA. This shutdown feature is specifically designed to eliminate click and pop noise when transitioning into or out of shutdown mode.

The OPA1622 features a unique internal layout for lowest crosstalk, and freedom from interactions between channels, even when overdriven or overloaded. This device is specified from –40°C to +125°C.

The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2.8-nV/√Hz noise density with an ultralow THD+N of –119.2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 ideal for use in portable-audio applications. This device also has a high output-drive capability of +145 mA / –130 mA.

The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2.6 mA of supply current per channel. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. The OPA1622 includes a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 5 µA. This shutdown feature is specifically designed to eliminate click and pop noise when transitioning into or out of shutdown mode.

The OPA1622 features a unique internal layout for lowest crosstalk, and freedom from interactions between channels, even when overdriven or overloaded. This device is specified from –40°C to +125°C.
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重要文件 類型 標題 格式選項 日期
* Data sheet OPA1622 SoundPlus™ High-Fidelity, Bipolar-Input, Audio Operational Amplifier datasheet (Rev. B) PDF | HTML 2016年 5月 3日
Application note How to Measure Total Harmonic Distortion of an Op-Amp and THD + N Fundamentals PDF | HTML 2023年 11月 9日
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 2021年 6月 14日
Application note HiFi Audio Circuit Design 2017年 8月 23日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
Technical article Pump it up quietly PDF | HTML 2016年 2月 19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
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 2014年 9月 30日
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 2005年 3月 30日

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開發板

OPA1622EVM — OPA1622 音訊運算放大器評估模組

OPA1622EVM 是用於評估 OPA1622 音訊運算放大器 (op amp) 性能的硬體平台。在 EVM 中，OPA1622 的每個通道皆配置為差動放大器，可接收來自音訊分析器或音訊 DAC 的差動輸入訊號，並輸出單端訊號。OPA1622EVM 包含耳機輸出，使用者可使用自己選擇的耳機聆聽 OPA1622 的音質。OPA1622EVM 具備 80mArms 高線性輸出電流，可驅動 8Ω、16Ω、32Ω、300Ω、600Ω 及更高阻抗的耳機負載。

使用指南: PDF
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模擬型號

OPA1622 PSpice Model (Rev. D)

SBOM958D.ZIP (30 KB) - PSpice Model
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模擬型號

OPA1622 TINA-TI Reference Design (Rev. C)

SBOM956C.TSC (342 KB) - TINA-TI Reference Design
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模擬型號

OPA1622 TINA-TI Spice Model (Rev. C)

SBOM957C.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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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
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參考設計

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DAC11001 音訊參考設計是一套獨特且全方位的音訊設計，搭載 DAC11001A 和 DAC11001B。DAC11001 是 20 位元、低雜訊、超高性能精準 R-2R 數位轉類比轉換器 (DAC)。ΔΣ 型調變器是音訊應用中最常見的 DAC。由於針對特定音訊需求的額外設計考量，因此音訊應用中通常不使用精密 R-2R 架構 DAC。此參考設計展示了精密 R-2R DAC 在高保真度音訊作為應用的情況下產生動態訊號的優點與限制。
Design guide: PDF
參考設計

TIDA-01341 — Hi-Fi 耳機放大器電源供應參考設計

耳機放大器通常需要正負電壓。在此參考設計中，兩種電壓皆由具有整合式分裂軌電荷泵轉換器的單一輸入電壓產生。其透過五個電容器和四個電阻器提供精巧解決方案尺寸。
Design guide: PDF
電路圖: PDF
參考設計

TIPD177 — 適用於電流輸出音訊 DAC 的高保真耳機放大器參考設計

This TI Precision Verified Design circuit converts the differential current output of audio DACs to a single-ended voltage capable of driving low impedance headphones. This design is capable of meeting the high-fidelity performance levels currently being popularized in cell phones and portable (...)
使用指南: PDF
電路圖: PDF
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