Dual CMOS op-amp for single-supply signal chains
The Renesas ICL7622ACPD is a dual CMOS operational amplifier in a 14-pin DIP through-hole package.
Package and mounting
The 1.4 MHz gain-bandwidth product sets the usable frequency range: at a closed-loop gain of 10, expect a -3 dB bandwidth around 140 kHz. The 1.6 V/µs slew rate limits large-signal response — a 5 V output step slews in roughly 3 µs. For audio-band filtering, low-frequency active filters, or DC-precise amplification, these numbers are adequate; for fast pulse or video-rate paths, a higher-slew device would be needed.
Rail-to-rail output and 1 pA input bias — where this part earns its keep
Rail-to-rail output means the amplifier can swing within millivolts of each supply rail, preserving dynamic range in low-voltage single-supply systems. The 1 pA input bias current is characteristic of CMOS inputs — negligible for most precision circuits, but the 2 mV input offset voltage (typical) is the dominant DC error term. Pair this with high-value feedback resistors (MΩ range) without adding significant offset from bias current.
The 2 V to 16 V supply span covers common 3.3 V, 5 V, and 12 V rails. Not rated for industrial or automotive ambient extremes.
Through-hole 14-DIP — board integration note
The 14-DIP (0.300" row spacing) through-hole package is a legacy footprint still common in prototyping, breadboarding, and retrofit repairs. The supplier device package is 14-PDIP. For new designs requiring surface-mount assembly, a DIP package adds manual-insertion cost and limits board density. The Bulk shipping medium means parts arrive in tubes or trays, not tape-and-reel.
Lifecycle and compliance — active but RoHS non-compliant
This is a critical flag for any BOM that must meet EU RoHS or similar environmental directives. For RoHS-compliant builds, a lead-free variant or alternative part must be sourced.