OPA1612

現行

具 1.1nV/√ Hz 雜訊、低 THD 和精密的 SoundPlus™ 音訊運算放大器

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) 40 Slew rate (typ) (V/µs) 27 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 Features Burr-Brown™ Audio, Premium Sound, Small Size THD + N at 1 kHz (typ) (%) 0.000015 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.055 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 120 Input bias current (max) (pA) 250000
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) 40 Slew rate (typ) (V/µs) 27 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 Features Burr-Brown™ Audio, Premium Sound, Small Size THD + N at 1 kHz (typ) (%) 0.000015 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.055 Product type Ultimate Architecture Bipolar CMRR (typ) (dB) 120 Input bias current (max) (pA) 250000
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) WSON (DRG) 8 9 mm² (3 mm × 3 mm)
  • Superior Sound Quality
  • Ultralow Noise: 1.1 nV/√Hz at 1 kHz
  • Ultralow Distortion:
    0.000015% at 1 kHz
  • High Slew Rate: 27 V/μs
  • Wide Bandwidth: 40 MHz (G = +1)
  • High Open-Loop Gain: 130 dB
  • Unity Gain Stable
  • Low Quiescent Current:
    3.6 mA per Channel
  • Rail-to-Rail Output
  • Wide Supply Range: ±2.25 V to ±18 V
  • Single and Dual Versions Available
  • Superior Sound Quality
  • Ultralow Noise: 1.1 nV/√Hz at 1 kHz
  • Ultralow Distortion:
    0.000015% at 1 kHz
  • High Slew Rate: 27 V/μs
  • Wide Bandwidth: 40 MHz (G = +1)
  • High Open-Loop Gain: 130 dB
  • Unity Gain Stable
  • Low Quiescent Current:
    3.6 mA per Channel
  • Rail-to-Rail Output
  • Wide Supply Range: ±2.25 V to ±18 V
  • Single and Dual Versions Available

The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1.1-nV/√Hz noise density with an ultralow distortion of 0.000015% at 1 kHz. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. These devices also have a high output drive capability of ±30 mA.

These devices operate over a very wide supply range of ±2.25 V to ±18 V, on only 3.6 mA of supply current per channel. The OPA1611 and OPA1612 op amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.

The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.

Both the OPA1611 and OPA1612 are available in SOIC-8 packages and the OPA1612 is available in SON-8. These devices are specified from –40°C to +85°C.

The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1.1-nV/√Hz noise density with an ultralow distortion of 0.000015% at 1 kHz. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. These devices also have a high output drive capability of ±30 mA.

These devices operate over a very wide supply range of ±2.25 V to ±18 V, on only 3.6 mA of supply current per channel. The OPA1611 and OPA1612 op amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.

The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.

Both the OPA1611 and OPA1612 are available in SOIC-8 packages and the OPA1612 is available in SON-8. These devices are specified from –40°C to +85°C.

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技術文件

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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 OPA161x SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifiers datasheet (Rev. C) PDF | HTML 2014/8/27
Circuit design Band pass filtered inverting attenuator circuit (Rev. B) PDF | HTML 2024/10/16
Circuit design Current-to-voltage converter circuit for audio DACs (Rev. A) PDF | HTML 2024/9/19
應用說明 How to Measure Total Harmonic Distortion of an Op-Amp and THD + N Fundamentals PDF | HTML 2023/11/9
Application brief Understanding Op Amp Noise in Audio Circuits PDF | HTML 2021/6/14
應用說明 HiFi Audio Circuit Design 2017/8/23
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 Analog Applications Journal 2Q 2015 2015/4/28
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
電子書 Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 2014/9/30
應用說明 Feedback Plots Define Op Amp AC Performance 2000/9/27

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

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
支援產品和硬體
模擬型號

OPA161x PSpice Model (Rev. G)

SBOM396G.ZIP (27 KB) - PSpice 模型
支援產品和硬體
模擬型號

OPA161x TINA-TI Reference Design (Rev. F)

SBOM398F (302 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

OPA161x TINA-TI SPICE Model (Rev. F)

SBOM397F.ZIP (11 KB) - TINA-TI Spice 模型
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模擬型號

SBAA333 Companion Simulations

SBAM413.ZIP (44 KB) - TINA-TI 參考設計
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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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設計工具

CIRCUIT060050 — 帶通濾波反向衰減器電路

此可調帶通衰減器可在 10 Hz 至 100 kHz 頻率範圍內降低 –40 dB 的訊號電平。並且允許獨立控制 DC 輸出位準。針對此設計,選擇了通帶外部的極頻率,將指定頻寬範圍內的衰減降到最低。
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設計工具

SBOC503 — Simulation for Band Pass Filtered Inverting Attenuator Circuit

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參考設計

PMP9781 — 適用於可攜式音訊應用的小型、高效率分裂軌電源供應參考設計

差動耳機放大器需要正負電壓。在此參考設計中,兩種電壓皆由具有所有整合式分裂軌轉換器的單一輸入電壓產生。只需要一個電感器和最低數量的外部元件即可實現高效率電源供應,進而將系統的失真維持在極低的程度。終端使用者可在行動應用中享受高保真音訊性能,以及更長的播放時間。

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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

此 TI 精準驗證設計電路可將音訊 DAC 的差動電流輸出轉換為能夠驅動低阻抗耳機的單端電壓。此設計能夠滿足目前在手機與可攜式音訊播放器中普及的高傳真性能水準。

支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
WSON (DRG) 8 Ultra Librarian

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