ALD2321ADC(2010) Datasheet - Advanced Linear Devices

GENERAL DESCRIPTION
The ALD2321A/ALD2321B/ALD2321 is a monolithic Precision Dual Voltage Comparator, each having integrated dual complementary output drivers. It is constructed using advanced silicon gate CMOS technology. Key features of the ALD2321A/ALD2321B/ALD2321 include very high input impedance, very low offset voltage utilizing on-chip e-trim (EPAD® electronic-trimming) technology, flexible multiple output configurations and fast response time with small overdrive voltage. It is designed for ultra low level signal detection from high impedance sources. For many applications the ALD2321A/ALD2321B/ALD2321 can eliminate an input amplification stage, a precision input bias stage, a signal level shift stage and an output buffer stage, and do the entire job from low level input signal detection to high output driver -- all on a single chip.

FEATURES
• Ultra low signal power of 4fW detectable
• Ultra low offset voltage of max. 0.2mV
• Ultra low input bias currents of typ. 0.01pA
• Low supply current of 110µA typical
• Virtually eliminates source impedance effects
• Low operating supply voltage of 4V to 10V
• Single (+5V) and dual supply (±5V) operation
• High speed for both small and large level signals 300ns typical for TTL inputs
• CMOS, NMOS and TTL compatible
• Each comparator has separate push and pull outputs
• High output sink current - typically 50mA
• Low supply current spikes
• Fanout of 30 TTL loads

APPLICATIONS
• Dual limit window comparator
• Power supply voltage monitor
• Photo-detector sensor circuit
• Relay or LED driver
• Oscillators
• Battery operated instruments
• Remote signal detection