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

OPA855-Q1

現行

具有雙極輸入的車用 8-GHz 增益頻寬、補償不全的轉阻放大器

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產品規格表

OPA855-Q1

現行
產品規格表 立即訂購

產品詳細資料

Architecture 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) 8000 BW at Acl (MHz) 2500 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2750 Vn at flatband (typ) (nV√Hz) 0.98 Vn at 1 kHz (typ) (nV√Hz) 2.8 Iq per channel (typ) (mA) 17.8 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail No Features Decompensated, Shutdown Rating Automotive Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 100 Input bias current (max) (pA) 5000000 Offset drift (typ) (µV/°C) 0.5 Iout (typ) (mA) 80 2nd harmonic (dBc) 90 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
Architecture 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) 8000 BW at Acl (MHz) 2500 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2750 Vn at flatband (typ) (nV√Hz) 0.98 Vn at 1 kHz (typ) (nV√Hz) 2.8 Iq per channel (typ) (mA) 17.8 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail No Features Decompensated, Shutdown Rating Automotive Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 100 Input bias current (max) (pA) 5000000 Offset drift (typ) (µV/°C) 0.5 Iout (typ) (mA) 80 2nd harmonic (dBc) 90 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
WSON (DSG) 8 4 mm² (2 mm × 2 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • High gain bandwidth product: 8 GHz
  • Decompensated, gain ≥ 7 V/V (stable)
  • Low input voltage noise: 0.98 nV/√Hz
  • Slew rate: 2750 V/µs
  • Low Input capacitance:
    • Common-mode: 0.6 pF
    • Differential: 0.2 pF
  • Wide input common-mode range:
    • 0.4 V from positive supply
    • 1.1 V from negative supply
  • 3 VPP total output swing
  • Supply voltage range: 3.3 V to 5.25 V
  • Quiescent current: 17.8 mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • High gain bandwidth product: 8 GHz
  • Decompensated, gain ≥ 7 V/V (stable)
  • Low input voltage noise: 0.98 nV/√Hz
  • Slew rate: 2750 V/µs
  • Low Input capacitance:
    • Common-mode: 0.6 pF
    • Differential: 0.2 pF
  • Wide input common-mode range:
    • 0.4 V from positive supply
    • 1.1 V from negative supply
  • 3 VPP total output swing
  • Supply voltage range: 3.3 V to 5.25 V
  • Quiescent current: 17.8 mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C

The OPA855-Q1 is a wideband, low-noise operational amplifier with bipolar inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 8-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains of up to tens of kΩs.

The following graph shows the bandwidth and noise performance of the OPA855-Q1 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 OPA855-Q1 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA855-Q1 is optimized to operate in optical time-of-flight (ToF) systems where the OPA855-Q1 is used with time-to-digital converters, such as the TDC7201. Use the OPA855-Q1 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541-Q1.

The OPA855-Q1 is a wideband, low-noise operational amplifier with bipolar inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 8-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains of up to tens of kΩs.

The following graph shows the bandwidth and noise performance of the OPA855-Q1 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 OPA855-Q1 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA855-Q1 is optimized to operate in optical time-of-flight (ToF) systems where the OPA855-Q1 is used with time-to-digital converters, such as the TDC7201. Use the OPA855-Q1 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541-Q1.
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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 OPA855-Q1 Automotive 8-GHz Gain Bandwidth Product, Gain of 7-V/V Stable, Bipolar Input Amplifier datasheet (Rev. B) PDF | HTML 2023/1/20
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 2022/4/29
技術文章 3 common questions when designing with high-speed amplifiers PDF | HTML 2020/7/17

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DEM-OPA-WSON8-EVM — 適用於 8 接腳 WSON (DSG) 封裝單通道運算放大器的未組裝評估模組

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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OPA855DSGEVM — OPA855DSG 評估模組

OPA855DSG EVM 是採用 DSG (8 針腳 WSON) 封裝之單 OPA855 的評估模組。OPA855DSG EVM 可快速展示放大器的功能性和多元用途。EVM 可透過板載連接器連接至電源、訊號源和測試儀器。預設放大器配置為 7 配置和分離電源的非反相增益。可輕鬆為其他增益及單電源操作進行配置。

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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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