Specifications

46 Maxim Industrial Solutions
Programmable logic controllers (PLCs)
Recommended solutions
Part Description Features Benefits
Operational amplifiers
MAX9943/44 38V precision, single and dual op amps Wide 6V to 38V supply range; low 100µV (max)
input offset voltage; drive 1nF loads
Wide operating voltage range and precision
performance under most capacitive loads
MAX9945 38V CMOS-input precision op amp Wide 4.75V to 38V supply range; low input-bias
current; rail-to-rail output swing
High voltage and low femto-amp input-bias
current easily allow high-voltage interfacing
with ultra-high omhic sensors
MAX410/MAX412/
MAX414
28MHz, 10V, low-noise, precision, single/
dual/quad series op amps
2.4nV/√Hz; 250µV (max) offset; 28MHz gain
bandwidth (GBW)
High-accuracy signal conditioning at low
frequencies and at high gain
MAX4238/39 Industry’s lowest offset, low-noise rail-to-
rail output op amps
2µV (max) offset; 25nV/√Hz; 6.5MHz GBW and
no 1/f input-noise component
Continuous precision signal conditioning at
low frequencies over time and temperature
MAX9939 SPI-programmable-gain amp (PGA) with
on-demand calibration and differential in/
out configurations
Input supports negative voltages; wide gain-
configuration range; input-error-nulling feature
Calibration on demand improves system
accuracy, minimizes harsh environmental
noise
Precision resistors
MAX5490/91/92 Precision-matched thin-film resistor-
dividers
Ratiometric 1ppm/°C (typ) temperature drift;
80V working voltage
Maintain system accuracy over temperature
variations; work well in high-voltage
applications
MAX5427/28/29 Low cost, one-time-programmable (OTP)
digital potentiometers with up/down
interface
1µA (max) standby current (no programming);
35ppm/°C end-to-end and 5ppm/°C ratiometric
tempco
Increase power savings and provide better
measurement stability over temperature
changes
MAX5494–MAX5499 10-bit, dual, nonvolatile voltage-dividers or
variable resistors with SPI interface
1µA (max) standby current (no programming);
35ppm/°C end-to-end and 5ppm/°C ratiometric
tempco
Improve power savings and increase
performance over temperature variations
Signal conditioners
MAX1452 Low-cost, precision sensor signal
conditioner
Multitemperature calibration; current and voltage
excitation; fast 150ns response; single-pin
programmable; 4–20mA applications
Highly accurate; simplifies designs in
multiple platforms; reduces inventory and
cost
MAX1464 Low-power, low-noise, multichannel, digital
sensor conditioner
Integrated 16-bit ADC, DACs, and CPU;
programmable compensation algorithm; digital,
analog, and PWM outputs; 4–20mA application
Directly interfaces with microprocessors/
controllers; provides amplification,
calibration, linearization, and temperature
compensation for a variety of sensors
Thermal management
DS600 Precision, analog-output temperature
sensor
Industry’s highest accuracy: ±0.5°C from -20°C
to +100°C
Best cold-junction compensation accuracy
for superior thermocouple measurement
DS7505 Low-voltage, precision digital thermometer
and thermostat
±0.5°C accuracy from 0°C to +70°C; 1.7V to
3.7V operation; industry-standard pinout
Industry-standard pinout allows easy
accuracy upgrade and supply-voltage
reduction from LM75
MAX6631 Low-power, digital temperature sensor ±1°C accuracy from 0°C to +70°C; 50µA (max)
supply current
Low supply current extends battery life
MAX6675 K-type thermocouple-to-digital converter Built-in cold-junction compensation Simplest thermocouple interface; no
external components needed
Voltage supervisors
MAX16023/24 Battery-backup switchover ICs with
integrated regulated output
Low power; small TDFN package; integrated
regulated output
Conserve power
MAX6381 Single-voltage supervisor Multiple threshold and timeout options Versatile for easy design reuse; saves space
in small modules
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Recommended solutions (continued)