Power-efficient multipliers are essential for micro systems, where low-power signal processing hardware is demanded. This paper presents an adiabatic array multiplier based on PAL-2N (pass-transistor adiabatic logic with NMOS pull-down configuration) circuits. It is composed of a multiplier array containing partial product generators and 1-bit (half and full) adders, and a final carry-lookahead adder. For comparison, a conventional array multiplier is also implemented. Full-custom layouts are drawn, and HSPICE simulations are carried out using the net-list extracted from their layout. The adiabatic and conventional array multipliers have been embedded in a test chip, which have been fabricated with Chartered 0.35um process and tested to verify its function.