SA58603 Datasheet, PDF (2/15 Pages) NXP Semiconductors – High precision operational amplifier, comparator, and voltage reference

Philips Semiconductors
High precision operational amplifier,
comparator, and voltage reference
Product data
SA58603
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.
Having single power supply capability, low current consumption, low
offset voltage, low input offset current and low input bias current, the
SA58603 is ideal for battery-powered applications and amplification
of very small signals. It is excellent for precision amplifiers in gas
burners and gas pilot water heaters which use thermal couple heat
sensors.
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
SIMPLIFIED DEVICE DIAGRAM
AOUT 3
AMPLIFIER
AIN– 2
AIN+ 1
R
22 kΩ
V_CC
8
1.27 V
COMPARATOR
7 COMPOUT
2002 Nov 13
4
GND
6
5
V_S
COMPIN–
Figure 1. Simplified device diagram.
2
SL01536