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運算放大器 (op amps)
音訊運算放大器

OPA1632

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全差分 I/O 音訊放大器

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OPA1633 現行 超低失真 195-MHz 全差分音訊放大器 Lower power (11 mA), lower noise (1.1 nV/rtHz) and wider supply (35 V)

OPA1632

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 GBW (typ) (MHz) 180 Slew rate (typ) (V/µs) 50 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 3 Iq per channel (typ) (mA) 13 Vn at 1 kHz (typ) (nV√Hz) 1.3 Features Burr-Brown™ Audio, Shutdown THD + N at 1 kHz (typ) (%) 0.000022 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.085 Architecture Voltage FB CMRR (typ) (dB) 90 Input bias current (max) (pA) 140000
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 GBW (typ) (MHz) 180 Slew rate (typ) (V/µs) 50 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 3 Iq per channel (typ) (mA) 13 Vn at 1 kHz (typ) (nV√Hz) 1.3 Features Burr-Brown™ Audio, Shutdown THD + N at 1 kHz (typ) (%) 0.000022 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.085 Architecture Voltage FB CMRR (typ) (dB) 90 Input bias current (max) (pA) 140000
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Excellent sound quality
  • Ultra low distortion: 0.000028%
  • Low noise: 1.25 nV/√Hz
  • High speed:
    • Slew rate: 72 V/µs
    • Gain bandwidth product: 180 MHz
  • Fully differential architecture:
    • Balanced input and output converts single-ended input to balanced differential output
  • Wide supply range: ±2.5 V to ±15 V
  • Shutdown current: 0.85 mA (V S = ± 5 V)
  • Temperature range: –40°C to +85°C
  • Excellent sound quality
  • Ultra low distortion: 0.000028%
  • Low noise: 1.25 nV/√Hz
  • High speed:
    • Slew rate: 72 V/µs
    • Gain bandwidth product: 180 MHz
  • Fully differential architecture:
    • Balanced input and output converts single-ended input to balanced differential output
  • Wide supply range: ±2.5 V to ±15 V
  • Shutdown current: 0.85 mA (V S = ± 5 V)
  • Temperature range: –40°C to +85°C

The OPA1632 is a fully differential amplifier (FDA) designed to drive high-performance audio analog-to-digital converters (ADCs) or as a predriver for class-D amplifiers.

The OPA1632 delivers excellent audio quality, very low noise, large output voltage swing, and high current drive. The OPA1632 has an excellent gain bandwidth of 180 MHz, and a very fast slew rate of 72 V/µs that helps to produce exceptionally low distortion. A very low input voltage noise of 1.25 nV/√Hz further provides maximum signal-to-noise ratio and dynamic range.

The flexibility of the fully differential architecture allows for easy implementation of a single-ended to fully differential output conversion. Differential output reduces even-order harmonics and minimizes common-mode noise interference. The OPA1632 provides excellent performance when used to drive high-performance audio ADCs such as the PCM1804. A shutdown feature is included to save power when the device is not in use.

The OPA1632 is characterized to operate from –40°C to +85°C and is available in an SO-8 package and a thermally-enhanced HVSSOP-8 PowerPAD™ integrated circuit package.

The OPA1632 is a fully differential amplifier (FDA) designed to drive high-performance audio analog-to-digital converters (ADCs) or as a predriver for class-D amplifiers.

The OPA1632 delivers excellent audio quality, very low noise, large output voltage swing, and high current drive. The OPA1632 has an excellent gain bandwidth of 180 MHz, and a very fast slew rate of 72 V/µs that helps to produce exceptionally low distortion. A very low input voltage noise of 1.25 nV/√Hz further provides maximum signal-to-noise ratio and dynamic range.

The flexibility of the fully differential architecture allows for easy implementation of a single-ended to fully differential output conversion. Differential output reduces even-order harmonics and minimizes common-mode noise interference. The OPA1632 provides excellent performance when used to drive high-performance audio ADCs such as the PCM1804. A shutdown feature is included to save power when the device is not in use.

The OPA1632 is characterized to operate from –40°C to +85°C and is available in an SO-8 package and a thermally-enhanced HVSSOP-8 PowerPAD™ integrated circuit package.
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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet OPA1632 High-Performance, Fully Differential Audio Op Amp datasheet (Rev. E) 2023年 8月 21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 Optimizing Noise and Power with Super Beta-Fully Differential Amplifiers PDF | HTML 2020年 12月 7日
Analog Design Journal Q3 2009 Issue Analog Applications Journal 2018年 9月 24日
Design guide TIDA-01359 Audio-OPA1632EVM Audio Interface Board Design Guide 2018年 4月 13日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
Application note Fully-Differential Amplifiers (Rev. E) 2016年 9月 19日
Analog Design Journal Using infinite-gain, MFB filter topology in fully differential active filters 2009年 7月 14日
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 2005年 3月 30日
Analog Design Journal Analysis of fully differential amplifiers 2005年 3月 11日
Analog Design Journal Designing for low distortion with high-speed op amps 2005年 3月 2日
Application note Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日

設計與開發

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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)
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  • DBV (SOT23-5 和 SOT23-6)
  • DCK (SC70-5 和 SC70-6)
使用指南: PDF | HTML
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模擬型號

OPA1632 PSpice Model (Rev. C)

SBOC064C.ZIP (2 KB) - PSpice Model
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模擬型號

OPA1632 TINA-TI Reference Design (Rev. D)

SBOC100D.TSC (270 KB) - TINA-TI Reference Design
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模擬型號

OPA1632 TINA-TI Spice Model (Rev. C)

SBOM182C.ZIP (6 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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模擬工具

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 (...)
要求
模擬工具

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

TIDA-01359 — 具有改善雜訊和失真的類比音頻放大器前端參考設計

類比音訊放大器前端參考設計展現如何為 TPA32xx D 類放大器打造音訊前端。AUDIO-OPA1632EVM 是一款專為測試此設計結果而設計的電路板。此電路板的設計檔案可在參考設計產品資料夾中找到。此設計利用標準音訊介面板 (AIB) 連接器來驅動 TPA32xx EVM 的兩個差動音訊輸入。此音訊前端具有 0、6 及 12dB 的可選增益，並可將兩個單端音訊訊號轉換為兩個驅動 TPA32xx 輸入的全差動訊號。此音訊前端的失真和雜訊性能（THD + N 比率）明顯優於 TPA32xx 的 THD + N 比率，這可確保音訊前端不會降低整體系統性能。
Design guide: PDF
電路圖: PDF
參考設計

PMP10710 — 運用同級最佳升壓控制器的公開音訊參考設計

PMP10710 is a 200W design for public announcement audio system which can be used in 100W +100W Stereo or 200W Woofer Applications. The design is broadly divided into four main stages:
  1. Single-Phase Synchronous Boost Converter using the LM5122 controller IC.  The design accepts an input voltage (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-RESOLVER-APPLICATIONS-REFERENCE-DESIGN — 適用於 AMC1210 的主機板/控制器

This is a reference design for resolver applications and part of a modular system for evaluating our delta-sigma modulators. The software included allows use of the AMC1210 in a variety of configurations for resolver and current-shunt applications and features a data-export utility to support data (...)
Test report: PDF
電路圖: PDF
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SOIC (D) 8 Ultra Librarian
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