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

OPA2834

現行

超低功耗、50 MHz 軌至軌輸出、負電軌輸入、電壓回饋運算放大器

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產品規格表

OPA2834

現行
產品規格表 立即訂購

產品詳細資料

Architecture Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.4 GBW (typ) (MHz) 20 BW at Acl (MHz) 50 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 26 Vn at flatband (typ) (nV√Hz) 12 Vn at 1 kHz (typ) (nV√Hz) 12 Iq per channel (typ) (mA) 0.17 Vos (offset voltage at 25°C) (max) (mV) 1.9 Rail-to-rail In to V-, Out Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 104 Input bias current (max) (pA) 90000 Offset drift (typ) (µV/°C) 1.2 Iout (typ) (mA) 20 2nd harmonic (dBc) 131 3rd harmonic (dBc) 146 Frequency of harmonic distortion measurement (MHz) 0.01
Architecture Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.4 GBW (typ) (MHz) 20 BW at Acl (MHz) 50 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 26 Vn at flatband (typ) (nV√Hz) 12 Vn at 1 kHz (typ) (nV√Hz) 12 Iq per channel (typ) (mA) 0.17 Vos (offset voltage at 25°C) (max) (mV) 1.9 Rail-to-rail In to V-, Out Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 104 Input bias current (max) (pA) 90000 Offset drift (typ) (µV/°C) 1.2 Iout (typ) (mA) 20 2nd harmonic (dBc) 131 3rd harmonic (dBc) 146 Frequency of harmonic distortion measurement (MHz) 0.01
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Ultra-low power:
    • Supply voltage: 2.7 V to 5.4 V
    • Quiescent current (IQ): 170 µA/ch (typical)
  • Bandwidth: 50 MHz (G = 1 V/V)
  • Slew rate: 26 V/µs
  • Settling time (0.1%): 88 ns (2-VSTEP)
  • HD2, HD3: –131 dBc, –146 dBc at 10 kHz (2 VPP)
  • Input voltage noise: 12 nV/√Hz (f = 10 kHz)
  • Input offset voltage: 350 µV (±1.9 mV max)
  • Negative rail input, rail-to-rail output (RRO)
    • Input voltage range: –0.2 V to 3.9 V
      (5-V supply)
  • Operating temperature range:
    –40°C to +125°C
  • Ultra-low power:
    • Supply voltage: 2.7 V to 5.4 V
    • Quiescent current (IQ): 170 µA/ch (typical)
  • Bandwidth: 50 MHz (G = 1 V/V)
  • Slew rate: 26 V/µs
  • Settling time (0.1%): 88 ns (2-VSTEP)
  • HD2, HD3: –131 dBc, –146 dBc at 10 kHz (2 VPP)
  • Input voltage noise: 12 nV/√Hz (f = 10 kHz)
  • Input offset voltage: 350 µV (±1.9 mV max)
  • Negative rail input, rail-to-rail output (RRO)
    • Input voltage range: –0.2 V to 3.9 V
      (5-V supply)
  • Operating temperature range:
    –40°C to +125°C

The OPA2834 is a dual-channel, ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback (VFB) operational amplifier designed to operate over a power-supply range of 2.7 V to 5.4 V with a single supply, or ±1.35 V to ±2.7 V with a dual supply. Consuming only 170 µA per channel and with a unity-gain bandwidth of 50 MHz, this amplifier sets an industry-leading performance-to-power ratio for rail-to-rail amplifiers.

For battery-powered and portable applications where low power consumption is of key importance, the OPA2834 offers an excellent bandwidth to IQ ratio. OPA2834 offers very low distortion making it very suitable for data acquisition systems and microphone pre-amplifier.

See the Device Comparison Table for a selection of low-power, low-noise, 5-V amplifiers from Texas Instruments with a gain-bandwidth product from 20 MHz to 300 MHz.

The OPA2834 is a dual-channel, ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback (VFB) operational amplifier designed to operate over a power-supply range of 2.7 V to 5.4 V with a single supply, or ±1.35 V to ±2.7 V with a dual supply. Consuming only 170 µA per channel and with a unity-gain bandwidth of 50 MHz, this amplifier sets an industry-leading performance-to-power ratio for rail-to-rail amplifiers.

For battery-powered and portable applications where low power consumption is of key importance, the OPA2834 offers an excellent bandwidth to IQ ratio. OPA2834 offers very low distortion making it very suitable for data acquisition systems and microphone pre-amplifier.

See the Device Comparison Table for a selection of low-power, low-noise, 5-V amplifiers from Texas Instruments with a gain-bandwidth product from 20 MHz to 300 MHz.
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* Data sheet OPA2834 50-MHz, 170-µA, Negative-Rail In, Rail-to-Rail Out, Voltage-Feedback Amplifier datasheet (Rev. A) PDF | HTML 2019年 7月 12日

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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)
  • DGK (VSSOP-8)
  • DBV (SOT23-5 和 SOT23-6)
  • DCK (SC70-5 和 SC70-6)
使用指南: PDF | HTML
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開發板

DEM-OPA-MSOP-2A — 適用於 MSOP-8 封裝的二路運算放大器評估模組

The DEM-OPA-MSOP-2A demonstration fixture helps designers evaluate the operation and performance of TI's dual, high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead MSOP (DGK) package.
 
For more information on these types of op amps, (...)
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模擬型號

OPA2834 PSpice Model (Rev. A)

SBOMB91A.ZIP (34 KB) - PSpice Model
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模擬型號

OPA2834 TINA-TI SPICE MODEL

SBOMAZ4.TSC (21 KB) - TINA-TI Reference Design
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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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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 (...)
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VSSOP (DGK) 8 Ultra Librarian
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