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

OPA856

現行

1.1-GHz 均一增益頻寬、0.9 nV/√Hz、雙極輸入放大器

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OPA856

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) 1080 BW at Acl (MHz) 1100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 350 Vn at flatband (typ) (nV√Hz) 0.9 Vn at 1 kHz (typ) (nV√Hz) 0.9 Iq per channel (typ) (mA) 17.2 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 106 Input bias current (max) (pA) 5000000 Offset drift (typ) (µV/°C) 0.7 Iout (typ) (mA) 100 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 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) 1080 BW at Acl (MHz) 1100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 350 Vn at flatband (typ) (nV√Hz) 0.9 Vn at 1 kHz (typ) (nV√Hz) 0.9 Iq per channel (typ) (mA) 17.2 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 106 Input bias current (max) (pA) 5000000 Offset drift (typ) (µV/°C) 0.7 Iout (typ) (mA) 100 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 Frequency of harmonic distortion measurement (MHz) 10
WSON (DSG) 8 4 mm² (2 mm × 2 mm)
  • Unity-gain bandwidth: 1.1 GHz
  • Gain bandwidth product: 1.1 GHz
  • Slew rate: 350 V/µs
  • Low input voltage noise: 0.9 nV/√Hz
  • Low input capacitance:
    • Common-mode: 0.4 pF
    • Differential: 0.7 pF
  • Supply voltage range: 3.3 V to 5.25 V
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C
  • Unity-gain bandwidth: 1.1 GHz
  • Gain bandwidth product: 1.1 GHz
  • Slew rate: 350 V/µs
  • Low input voltage noise: 0.9 nV/√Hz
  • Low input capacitance:
    • Common-mode: 0.4 pF
    • Differential: 0.7 pF
  • Supply voltage range: 3.3 V to 5.25 V
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C

The OPA856 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 1.1-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in low-capacitance photodiode applications.

The graph below shows the bandwidth and noise performance of the OPA856 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 OPA856 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA856 is optimized to operate in optical time-of-flight (ToF) systems where the OPA856 is used with time-to-digital converters, such as the TDC7201. Use the OPA856 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.

The OPA856 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 1.1-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in low-capacitance photodiode applications.

The graph below shows the bandwidth and noise performance of the OPA856 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 OPA856 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA856 is optimized to operate in optical time-of-flight (ToF) systems where the OPA856 is used with time-to-digital converters, such as the TDC7201. Use the OPA856 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.
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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 OPA856 1.1-GHz Unity-Gain Bandwidth, 0.9 nV /√Hz , Bipolar Input Amplifier datasheet PDF | HTML 2020/10/5
Application brief LiFi: TI High-Speed Products for Optical Wireless Communication PDF | HTML 2023/8/7

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開發板

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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模擬型號

OPA856 Unencrypted PSPICE Model Package

SBOMBI1.ZIP (23 KB) - PSpice 模型
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模擬型號

OPA856 Unencrypted TINA-TI Reference Design Package

SBOMBI2.TSC (54 KB) - TINA-TI 參考設計
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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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