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

OPA859

現行

1.8 GHz 單位增益頻寬、3.3 nV/√Hz、FET 輸入放大器

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OPA859

現行
產品規格表 立即訂購

產品詳細資料

Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 GBW (typ) (MHz) 900 BW at Acl (MHz) 1800 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1150 Vn at flatband (typ) (nV√Hz) 3.3 Vn at 1 kHz (typ) (nV√Hz) 12.1 Iq per channel (typ) (mA) 20.5 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 84 Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 76 2nd harmonic (dBc) 90 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 GBW (typ) (MHz) 900 BW at Acl (MHz) 1800 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1150 Vn at flatband (typ) (nV√Hz) 3.3 Vn at 1 kHz (typ) (nV√Hz) 12.1 Iq per channel (typ) (mA) 20.5 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 84 Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 76 2nd harmonic (dBc) 90 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
DIESALE (Y) — See data sheet WSON (DSG) 8 4 mm² 2 x 2
  • High unity-gain bandwidth: 1.8GHz
  • Gain bandwidth product: 900MHz
  • Ultra-low bias current MOSFET inputs: 10pA
  • Low input voltage noise: 3.3nV/√Hz
  • Slew rate: 1150V/µs
  • Low Input capacitance:
    • Common-mode: 0.6pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 1.4V from positive supply
    • Includes negative supply
  • 2.5VPP output swing in TIA configuration
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.5mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C
  • High unity-gain bandwidth: 1.8GHz
  • Gain bandwidth product: 900MHz
  • Ultra-low bias current MOSFET inputs: 10pA
  • Low input voltage noise: 3.3nV/√Hz
  • Slew rate: 1150V/µs
  • Low Input capacitance:
    • Common-mode: 0.6pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 1.4V from positive supply
    • Includes negative supply
  • 2.5VPP output swing in TIA configuration
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.5mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C

The OPA859 is a wideband, low-noise operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 0.9GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in low-capacitance photodiode applications.

The following graph shows the bandwidth and noise performance of the OPA859 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency (f) on the left scale. The OPA859 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA859 is optimized to operate in optical time-of-flight (ToF) systems where the OPA859 is used with time-to-digital converters, such as the TDC7201. Use the OPA859 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541 or LMH5401 devices.

The OPA859 is a wideband, low-noise operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 0.9GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in low-capacitance photodiode applications.

The following graph shows the bandwidth and noise performance of the OPA859 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency (f) on the left scale. The OPA859 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA859 is optimized to operate in optical time-of-flight (ToF) systems where the OPA859 is used with time-to-digital converters, such as the TDC7201. Use the OPA859 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541 or LMH5401 devices.
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重要文件 類型 標題 格式選項 日期
* Data sheet OPA859 1.8GHz Unity-Gain Bandwidth, 3.3nV/√Hz, FET Input Amplifier datasheet (Rev. A) PDF | HTML 2025年 5月 5日
White paper 汽車光達簡介 (Rev. D) PDF | HTML 2025年 4月 24日
Product overview Pairing High-Speed JFET Amplifiers With Hi-Z DAQ Systems PDF | HTML 2024年 4月 8日
Application brief LiFi: TI High-Speed Products for Optical Wireless Communication PDF | HTML 2023年 8月 7日
Application note Choosing an Amplifier for Wide Bandwidth, High-Impedance, Data Acquisition AFEs PDF | HTML 2023年 3月 2日
Technical article 3 common questions when designing with high-speed amplifiers PDF | HTML 2020年 7月 17日
Technical article What you need to know about transimpedance amplifiers – part 2 PDF | HTML 2016年 9月 1日
Technical article What you need to know about transimpedance amplifiers – part 1 PDF | HTML 2016年 5月 6日
Technical article SPICE it up: How to extract the input capacitance of an op amp (part 3) PDF | HTML 2016年 3月 21日
Application note Noise Analysis for High Speed Op Amps (Rev. A) 2005年 1月 17日

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DEM-OPA-WSON8-EVM — 採用 DSG（8 接腳 WSON）封裝中用於單通道運算放大器的未填充評估模組

DEM-OPA-WSON8-EVM 是用於 DSG（8 接腳 WSON）封裝中單通道運算放大器的未組裝評估模組。此 EVM 專為高速性能規格而設計，與增益頻寬超過 1GHz 的放大器相容。
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模擬型號

OPA859 PSpice Model

SBOMBQ2.ZIP (160 KB) - PSpice Model
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模擬型號

OPA859 TINA-TI Reference Design

SBOMAS3.TSC (71 KB) - TINA-TI Reference Design
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OPA859 TINA-TI Spice Model

SBOMAS2.ZIP (10 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。

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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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