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 0.9-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 OPA859 as a function of the photodiode capacitance when the amplifier is set as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency, f, on the left-hand 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.
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|Number of Channels (#)|
|Total Supply Voltage (Min) (+5V=5, +/-5V=10)|
|Total Supply Voltage (Max) (+5V=5, +/-5V=10)|
|BW @ Acl (MHz)|
|Acl, min spec gain (V/V)|
|Slew Rate (Typ) (V/us)|
|Vn at Flatband (Typ) (nV/rtHz)|
|Vn at 1kHz (Typ) (nV/rtHz)|
|Iq per channel (Typ) (mA)|
|Vos (Offset Voltage @ 25C) (Max) (mV)|
|Operating Temperature Range (C)|
|Package Size: mm2:W x L (PKG)|
|CMRR (Typ) (dB)|
|Input Bias Current (Max) (pA)|
|Offset Drift (Typ) (uV/C)|
|GBW (Typ) (MHz)|
|Output Current (Typ) (mA)|
|2nd Harmonic (dBc)|
|3rd Harmonic (dBc)|
|-40 to 125||-40 to 125||-40 to 95||-40 to 125|
|WSON | 8||WSON | 8||VQFN | 16||WSON | 8|
|See datasheet (WSON)||See datasheet (WSON)||16VQFN: 9 mm2: 3 x 3 (VQFN | 16)||See datasheet (WSON)|
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