OPA857 差動出力、トランスインピーダンス・アンプ | TIJ.co.jp

この製品はすでに市場にリリースされており、ご購入できます。 一部の製品は、より新しい代替品を使用できる可能性があります。



  • OPA857-DIE  - このデバイスは類似の機能を備えていますが、同等の機能ではありません。 


The OPA857 is a wideband, fast overdrive recovery, fast-settling, ultralow-noise transimpedance amplifier targeted at photodiode monitoring applications. With selectable feedback resistance, the OPA857 simplifies the design of high-performance optical systems. Very fast overload recovery time and internal input protection provide the best combination to protect the remainder of the signal chain from overdrive while minimizing recovery time. The two selectable transimpedance gain configurations allow high dynamic range and flexibility required in modern transimpedance amplifier applications. The OPA857 is available in a 3-mm × 3-mm VQFN package.

The device is characterized for operation over the full industrial temperature range from –40°C to +85°C.


  • Internal Midscale Reference Voltage
  • Pseudo-Differential Output Voltage
  • Wide Dynamic Range
  • Closed-Loop Transimpedance Bandwidth:
    • 125 MHz (5-kΩ Transimpedance Gain,
      1.5-pF External Parasitic Capacitance)
    • 105 MHz (20-kΩ Transimpedance Gain,
      1.5-pF External Parasitic Capacitance)
  • Ultralow Input-Referred Current Noise
    (Brickwall Filter BW = 135 MHz):
    15 nARMS (20-kΩ Transimpedance)
  • Very Fast Overload Recovery Time: < 25 ns
  • Internal Input Protection Diode
  • Power Supply:
    • Voltage: 2.7 V to 3.6 V
    • Current: 23.4 mA
  • Extended Temperature Range: –40°C to +85°C


他の製品と比較 トランスインピーダンス・アンプ メール Excelへダウンロード
Part number オーダー・オプション Number of channels (#) GBW (Typ) (MHz) Total supply voltage (Max) (+5V=5, +/-5V=10) Total supply voltage (Min) (+5V=5, +/-5V=10) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features BW @ Acl (MHz) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Approx. price (US$)
OPA857 ご注文 1     6800     3.6     2.3     10     No         130     -40 to 85     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     2.59 | 1ku    
OPA857-DIE サンプルは利用できません。 1     6800     3.6     2.3       No         130     -40 to 85