0
ACTIVE
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 x 2
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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