GENERAL DESCRIPTION

The ALD2301A/ALD2301B/ALD2301C/ALD2301 is a monolithic high performance dual voltage comparator built with advanced silicon gate CMOS technology. It features very high typical input impedance of 1012Ω; low input bias current of 10pA; fast response time of 300ns; very low power dissipation of 55µA per comparator; and single (+5V) or dual (±5V) power supply operation.

The input voltage range includes ground, making this comparator ideal for low level signal detection with high source impedance. The outputs are open-drain configuration, allowing maximum application flexibility, such as wired-OR connection. The outputs can be connected to a higher external voltage than V+.

FEATURES

• Fanout of 30LS TTL loads

• Low supply current of 110µA typical

• Functional equivalent to LM193 industry standard comparators

• Extremely low input bias currents

-- typically 10pA

• Virtually eliminates source impedance effects

• Low operating supply voltage of 3V to 10V

• Single (+5V) and dual supply (±5V) operation

• High speed for both large signal and low level signals -- 300ns typical for TTL inputs

• CMOS, NMOS and TTL compatible

• Wired-OR open drain outputs

• High output sinking current -- typically 60mA

• Low supply current spikes

APPLICATIONS

• High source impedance voltage comparison circuits

• Dual limit window comparator

• Power supply voltage monitor

• Photo-detector sensor circuit

• Relay or LED driver

• Oscillators

• Battery operated instruments

• Remote signal detection

BENEFITS

• Low power and high precision combination

• Built-in high input impedance buffer

• Built-in output driver with up to 60mA sink current