HGSEMI OPA330M5/TR

The OPAx330 amplifiers are single/dual/quad, micropower, zero-drift CMOS op amps offering 350kHz bandwidth, rail-to-rail input and output, and single-supply operation from 1.8V to 5.5V. The OPAx330 uses chopper stabilization to provide ultralow offset voltage (maximum less than 10μV) and near-zero temperature drift. The low quiescent current of 25μA per amplifier and ultralow input bias current of 20pA make it an ideal choice for low-offset, low-power, and high-impedance applications. The OPAx330 delivers excellent CMRR without the crossover distortion associated with conventional complementary input stages. This design enables superior performance when driving ADCs without degrading differential linearity. The OPA330 is available in SOT23-5, SC70-5, and SOP-8 packages. The OPA2330 is available in SOP8, MSOP8, and DFN-8 packages. The quad OPA4330 is available in green SOP-14 and TSSOP-14 packages. The extended operating temperature range of -45℃ to +125℃ across all supply voltages provides additional design flexibility. The OPAx330 series op amps are unity-gain stable and suitable for a wide range of applications. Their compact packages help save PCB space and enable smaller electronic product designs. The series operates from 1.8V to 5.5V single supply or ±0.9V to ±2.75V dual supply. For optimal performance in single-supply operation, a 0.1μF ceramic capacitor should be placed near the VDD pin. For dual-supply operation, the VDD and VSS supplies should each be bypassed to ground with separate 0.1μF ceramic capacitors. The series' low supply current (typically 25μA per channel) helps maximize battery life, making it ideal for battery-powered systems. The wide operating voltage range spans 1.8V to 5.5V. Furthermore, all temperature specifications apply from -45℃ to +125℃. Most characteristics remain constant over the full supply voltage range. These guarantees ensure operation throughout the entire life of a single-cell Li-ion battery. The input common-mode range of the OPAx330 series extends beyond the supply rails by 100mV (VSS-0.1V to VDD+0.1V), achieved through the use of complementary input stages. During normal operation, inputs should be kept within this range. Rail-to-rail output swing provides the maximum possible dynamic range at the output, which is especially important at low supply voltages. With light resistive loads (>100kΩ), the output voltage of the OPAx330 series can typically swing to within 5mV of the supply rails; with moderate resistive loads (10kΩ), to within 100mV of the supply rails. The OPAx330 series is optimized for bandwidth and speed rather than driving capacitive loads. Output capacitance introduces a pole in the amplifier's feedback path, causing excessive peaking and potential oscillation. If handling capacitive loads is a requirement, two strategies may be considered: (1) insert a small series resistor between the amplifier output and the load capacitance; (2) reduce the amplifier feedback loop bandwidth by increasing the overall noise gain.

• Single-supply operating voltage range: +1.8V ~ +5.5V
• Rail-to-rail input/output
• Gain bandwidth product: 350kHz (typical @25℃)
• Low input bias current: 20pA (typical @25℃)
• Low offset voltage: 10μV (maximum @25℃)
• Quiescent current: 25μA per amplifier (typical)
• Operating temperature range: -45℃ ~ +125℃
• Zero drift: 0.05μV/℃ (typical)
• Integrated RF EMI filter
• Small packages: OPA330 available in SOT23-5, SC70-5, and SOP-8; OPA2330 available in SOP8, MSOP8, and DFN-8; OPA4330 available in SOP14 and TSSOP14; including SOP-8, SOP-14, TSSOP-14, MSOP-8, SOT-23-5, SC70-5, DFN-8 2×2mm

• Sensor applications
• Temperature measurement
• Electronic scales
• Handheld test equipment
• Battery-powered instruments