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  • OPA860: best for generating a low amplitude (1 mA) sinusoidal current between 50 - 100 kHz.

    TI Thinks Resolved
    Part Number: OPA860 Other Parts Discussed in Thread: OPA861 , OPA615 , LM13700 , OPA2210 Hi Team, The customer is working on a voltage-controlled current source and would like to use an operational transconductance amplifier (OTA) integrated circuit and they…
    • Answered

  • RE: Using OPA861 in an optical communication module with LED

    Resolved
    Hi Benjamin, Would it be possible for you to describe your application circuit and requirements in a separate post? Best Regards, Rohit

  • OPA861 -- math mistake in LPF

    Other Parts Discussed in Thread: OPA861 The datasheet for the OPA861 appears to have a math mistake in the calculation of component values for the low pass filter. If frequency is 20kHz, and R is 1k, C2=0.008uF and C1=0.004uF. The values for the 10MHz…

  • Quiescent current

    Other Parts Discussed in Thread: OPA861 , TLE2426 Hello, I'm a little bit confused about the quiescent current of the OPA861. Im my application, I'm using the OPA861 in a single supply configuration with 6.6V DC. I'm also using a TLE2426 as a Vbias…

  • pcm1794 and opa861 based i/v stage

    Other Parts Discussed in Thread: PCM1794 , OPA861 Dear I have a dac with pcm1794 and the output stage is the same of datasheet. I'm happy for this but i'm looking for another configuration that use no feedback IC. i assume a pattern like: DAC out -…

  • circuit connection of OPA860

    Other Parts Discussed in Thread: OPA860 , OPA861 HI every one, I am using OPA 860 IC for VCCS, but i think my circuit is incorrect. Any one will give single supply based VCCS using OPA860 circuit.

  • RE: Best transimpedance multiplexing technique with OPA842/OPA847 (highly dynamic TIA)

    Hello Samir, Something like : Bias(150V)->Photodiode (Cd=15pF) -> Resistance of 50Ohm between photodiode_anode and GND. A OPA861 connected to the photodiode_anode and a R1/R2 on the OPA861 to be able to lower the current. R1/R2 is configurable. …
    • Answered

  • Re: OPA860/861 Question about In-Amp in sboa117 documentation

    Resolved
    Hello Michael, The propagation delay on the output of the OPA861 will be controlled by the capacitor, noted Ccomp. If the capacitor is greater on one side than the other, the pole formed by the output impedance of the C output (current source) and Ccomp…

  • Laser diode driving

    TI Thinks Resolved
    Other Parts Discussed in Thread: OPA861 , OPA615 , OPA2673 Hi. I would like to make a laser diode driving circuit for M5-905-0100. I want drive the laser diode with current varying from 20 to 200mA. Applied signal is 225MHz PAM. Can I use OPA861 and high…
    • Answered

  • Re: Laser Diode Interfacing

    Resolved
    Alex, On +10V, the OPA861 can source/sink ±15mA, on +5V, this goes down to ±8mA, so to achieve 150mA drive, you will have to use 10x OPA861 in parallel. Each OPA861 will consume ~6mA quiescent current. The maximum number of OPA861 the…

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