The SM73302 is an 88 MHz, precision, low noise, 1.8V CMOS input, decompensated operational amplifier

The SM73302 low noise, CMOS input op amp provides a low input voltage noise density of 5.8 nV/√Hz while consuming only 1.15 mA of quiescent current. The gain of the SM73302 is stabilized at a factor of 10, and the gain-bandwidth (GBW) product is 88 MHz. The SM73302 has a supply voltage range of 1.8V to 5.5V and can operate from a single supply. Featuring a rail-to-rail output stage, the SM73302 is part of a family of precision amplifiers ideal for a variety of instrumentation applications.

The SM73302 provides optimum performance in low voltage and low noise systems. A CMOS input stage, typical input bias currents in the range of a few femtoamps, and input common-mode voltage range (including ground) make the SM73302 ideal for AN5276 low-power sensor applications that require high speed.

The SM73302 is manufactured using an advanced VIP50 process. The SM73302 is available in a 5-pin SOT-23 package.


● (Typical 5V power supply unless otherwise noted)

●Renewable energy rating

●Input offset voltage ±150 μV (max)

●Input reference voltage noise 5.8 nV/√Hz

●Input bias current 100 fA

●Gain bandwidth product 88 MHz

●Supply voltage range 1.8V to 5.5V

●Power current 1.15mA

● Rail-to-rail output swing

○ @ 10 kΩ loaded 25 mV from rail

○ @ 2 kΩ loaded 45 mV from rail

2.5V and 5.0V performance

●Total harmonic distortion 0.04% @1 kHz, 600Ω

●Temperature range -40°C to 125°C


●ADC interface

●Photodiode amplifier

● Active filters and buffers

●Low noise signal processing

●Medical equipment

●Sensor interface application


Architecture: FET/CMOS input, voltage FB

Number of channels (#): 1

Total Supply Voltage (Min) (+5V=5, +/-5V=10): 1.8

Total Supply Voltage (Max) (+5V=5, +/-5V=10): 5.5

GBW (typ.) (MHz): 88

Bandwidth @Acl (MHz): 8.8

Acl, Minimum Spec Gain (V/V): 10

Slew rate (Typ) (V/us): 28

Flat Band Vn (Typ) (nV/rtHz): 5.8

Vn (typ) at 1 kHz (nV/rtHz): 5.8

Iq (Typ) (mA) per channel: 1.15

Vos (offset voltage @ 25 C) (max) (mV): 0.15

Rail to Rail: Input to V-, Output

Features: Decompensated

Operating temperature range (°C): -40 to 125

CMRR (typ.) (dB): 100

Input Bias Current (Max) (pA): 1

Offset Drift (Typ) (uV/C): 1

Output current (Typ) (mA): 21