Advanced Linear Devices ALD4302PBL

The ALD4302A/ALD4302 is a monolithic high performance quad voltage comparator built with advanced silicon gate CMOS technology. It features very high typical input impedance of 10^12 Ω; low input bias current of 10 pA; fast response time of 120 ns; very low power dissipation of 150 μA per comparator; and single (+5 V) or dual (±5 V) power supply operation. The input voltage range includes ground, making this comparator ideal for single supply low level signal detection with high source impedance. The outputs can source and sink current, allowing application flexibility, and can be used in either wired-OR connection without pull up resistor or push-pull configuration. The ALD4302A/ALD4302 can be used in wired-OR connections with other open drain circuits such as the ALD2301 and ALD2303 voltage comparators. The ALD4302A/ALD4302 is ideal for a great variety of precision voltage comparator applications, especially low level signal detection circuits requiring low standby power, yet retaining high output current capability.

• Guaranteed to drive 200Ω loads
• Fanout of 30 LS TTL loads
• Low supply current of 150 μA each comparator
• Extremely low input bias currents -- typically 10 pA
• Virtually eliminates source impedance effects
• Low operating supply voltage of 4V to 10V
• Single (+5 V) and dual supply (±5 V) operation
• High speed for both large and small signals - 120 ns for TTL inputs and 400 ns for 5 mV overdrive
• CMOS, NMOS and TTL compatible
• Push-pull outputs
• High output sinking current -- typically 60 mA
• Low supply current spikes
• High gain -- 100 V/mV
• MOSFET driver
• High source impedance voltage comparison circuits
• Multiple limit window comparator
• Power supply voltage monitor
• Photo-detector sensor circuit
• High speed LED driver
• Oscillators
• Battery operated instruments
• Remote signal detection
• Multiple relay drivers

• Double dual limit window comparator
• Push-pull complementary power MOSFET driver
• Time delay generator