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運算放大器 (op amps)
高速運算放大器 (GBW ≥ 50 MHz)

OPA4820

現行

四路、單一增益、低雜訊、電壓回饋運算放大器

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產品規格表

OPA4820

現行
產品規格表 立即訂購

產品詳細資料

Architecture Voltage FB Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 250 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 240 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 2.5 Iq per channel (typ) (mA) 5.6 Vos (offset voltage at 25°C) (max) (mV) 0.8 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 85 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 4 Iout (typ) (mA) 85 2nd harmonic (dBc) 84 3rd harmonic (dBc) 92 Frequency of harmonic distortion measurement (MHz) 1
Architecture Voltage FB Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 250 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 240 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 2.5 Iq per channel (typ) (mA) 5.6 Vos (offset voltage at 25°C) (max) (mV) 0.8 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 85 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 4 Iout (typ) (mA) 85 2nd harmonic (dBc) 84 3rd harmonic (dBc) 92 Frequency of harmonic distortion measurement (MHz) 1
SOIC (D) 14 51.9 mm² 8.65 x 6 TSSOP (PW) 14 32 mm² 5 x 6.4
  • HIGH BANDWIDTH: 220MHz (G = +2)
  • HIGH OUTPUT CURRENT: ±85mA
  • LOW INPUT NOISE: 2.5nV/Hz
  • LOW SUPPLY CURRENT: 5.7mA/ch
  • FLEXIBLE SUPPLY VOLTAGE:
    ±2V to ±6.3V Dual Supply
    +4V to +12.6V Single Supply
  • EXCELLENT DC ACCURACY:
    • Maximum 25°C Input Offset Voltage = 0.8mV
    • Maximum 25°C Input Offset Current = 500nA
  • APPLICATIONS
    • LOW–COST VIDEO LINE DRIVERS
    • ADC PREAMPS
    • ACTIVE FILTERS
    • LOW–NOISE INTEGRATORS
    • PORTABLE TEST EQUIPMENT
    • OPTICAL CHANNEL AMPLIFIERS
    • LOW–POWER, BASEBAND AMPLIFIERS
    • CCD IMAGING CHANNEL AMPLIFIERS
    • OPA4650 UPGRADE

All trademarks are the property of their respective owners.
  • HIGH BANDWIDTH: 220MHz (G = +2)
  • HIGH OUTPUT CURRENT: ±85mA
  • LOW INPUT NOISE: 2.5nV/Hz
  • LOW SUPPLY CURRENT: 5.7mA/ch
  • FLEXIBLE SUPPLY VOLTAGE:
    ±2V to ±6.3V Dual Supply
    +4V to +12.6V Single Supply
  • EXCELLENT DC ACCURACY:
    • Maximum 25°C Input Offset Voltage = 0.8mV
    • Maximum 25°C Input Offset Current = 500nA
  • APPLICATIONS
    • LOW–COST VIDEO LINE DRIVERS
    • ADC PREAMPS
    • ACTIVE FILTERS
    • LOW–NOISE INTEGRATORS
    • PORTABLE TEST EQUIPMENT
    • OPTICAL CHANNEL AMPLIFIERS
    • LOW–POWER, BASEBAND AMPLIFIERS
    • CCD IMAGING CHANNEL AMPLIFIERS
    • OPA4650 UPGRADE

All trademarks are the property of their respective owners.

The OPA4820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 5.7mA/ch supply current. At unity-gain, the OPA4820 gives > 600MHz bandwidth with < 1 dB peaking. The OPA4820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±0.8mV and an offset current of ±500nA give excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage swing headroom allow the OPA4820 to operate on a single +5V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.

Exceptionally low dG/dP (0.01%/0.03°) supports low-cost composite video line driver applications. Existing designs can use the industry-standard quad pinout SO-14 package while emerging high-density portable applications can use the TSSOP-14.

The OPA4820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 5.7mA/ch supply current. At unity-gain, the OPA4820 gives > 600MHz bandwidth with < 1 dB peaking. The OPA4820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±0.8mV and an offset current of ±500nA give excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage swing headroom allow the OPA4820 to operate on a single +5V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.

Exceptionally low dG/dP (0.01%/0.03°) supports low-cost composite video line driver applications. Existing designs can use the industry-standard quad pinout SO-14 package while emerging high-density portable applications can use the TSSOP-14.
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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 Quad, Unity-Gain, Low-Noise, Voltage-Feedback Operational Amplifier datasheet (Rev. D) 2008年 8月 28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 RLC Filter Design for ADC Interface Applications (Rev. A) 2015年 5月 13日
User guide DEM-OPA-SO-4A User's Guide (Rev. B) 2008年 11月 26日
User guide DEM-OPA-TSSOP-4A User's Guide (Rev. C) 2008年 8月 12日
Application note ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 2004年 4月 22日
Application note Measuring Board Parasitics in High-Speed Analog Design 2003年 7月 7日

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

DEM-OPA-SO-4A — 四路運算放大器 SO-14 通用評估模組

使用指南: PDF
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開發板

DEM-OPA-TSSOP-4A — 適用於 TSSOP-14 封裝的四路運算放大器評估模組

使用指南: PDF
TI.com 無法提供
模擬型號

OPA4820 PSpice Model

SBOM576.ZIP (38 KB) - PSpice Model
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模擬型號

OPA4820 TINA-TI Reference Design

SBOM578.TSC (95 KB) - TINA-TI Reference Design
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模擬型號

OPA4820 TINA-TI Spice Model

SBOM577.ZIP (4 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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VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
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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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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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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 14 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian
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