GENERAL DESCRIPTION

The SA58603 is comprised of a low voltage, high precision dual operational amplifier, a comparator, and a reference voltage source. The input offset voltage is typically 100 μV with a very low temperature drift of ±1 μV/°C. The SA58603 supply current is typically 100 μA per amplifier and it operates from 1.8 V to 6 V single supply.

FEATURES

General

? Functionality to 1.8 V typical

? Low supply current: 100 μA per amplifier (typical)

Amplifier section

? Very low input offset voltage: 100 μV (typical)

? Very low input offset drift: ±1 μV/°C (typical)

? Low input offset current: 1 nA (typical)

? Input bias current: 50 nA (typical)

? Open loop gain: 100 dB (typical)

? Common mode input includes ground

Comparator section

? Input offset voltage: ±1.0 mV (typical)

? Low input offset voltage voltage drift (–40 to +85 °C): ±10 μV (typical)

? Input bias current: 25 nA (typical)

? Output sink current: 5 mA (minimum)

Reference voltage section

? Reference voltage: 1.27 V ±50 mV

? Reference voltage temperature characteristics: ±100 ppm/°C (typical)

? Output current: 0.3 mA (minimum)

APPLICATIONS

? Gas burners

? Gas water heaters

? Tankless gas water heaters