Active production, military temp grade
The INA155UA: RoHS3 compliant — no exemption-based conflict with global RoHS regulations. No REACH, UL, or IEC specific certifications appear in the record, but TI's standard declaration of conformity covers the SOIC-8 package.
Bandwidth, slew rate, and input precision
The 550 kHz -3 dB bandwidth and 6.5 V/µs slew rate set the signal-conditioning ceiling: for a gain of 10, the closed-loop bandwidth drops to roughly 55 kHz, so the part suits bridge amplifiers, thermocouple front-ends, and strain-gauge channels where the signal frequency stays below 50 kHz. The 6.5 V/µs slew rate means a 5 V step settles in about 770 ns — fast enough for multiplexed data-acquisition systems scanning at 100 kS/s. Input bias current is 1 pA typical, and input offset voltage is 200 µV. For a 10 kΩ source impedance, the bias current contributes only 10 nV of additional offset — negligible. The 200 µV offset, however, is the dominant DC error term and should be budgeted into the system calibration; a zero-drift architecture (like the INA254A1IPWAR peer) would reduce this to microvolt level, but at the cost of a lower 350 kHz bandwidth and different supply range. Supply span is 2.7 V to 5.5 V — the part runs from a single 3.3 V or 5 V rail without needing a split supply. The rail-to-rail output swings within 50 mV of each rail at light load, preserving dynamic range in low-voltage systems. Output drive is 50 mA per channel, enough to drive an ADC input directly or a 100 Ω load with a 5 V swing.
Package and board integration
Housed in an 8-pin SOIC — the 0.154-inch body width and 1.27 mm pitch are standard for two-layer PCB layouts. The tube packaging is typical for engineering samples and low-volume production; for reel quantities the order code would differ. Surface-mount rework follows standard SOIC profiles: 260°C peak, 30-second above 217°C.