Specifications

Motor Control
Recommended solutions
110 Maxim Industrial Solutions
Part Description Features Benefits
ADCs
MAX11044/45/46
MAX11047/48/49
16-bit, 4-/6-/8-channel,
simultaneous-sampling SAR ADCs
93dB SNR; -105dB THD; 0 to 5V or ±5V inputs;
parallel interface outputs, all eight data results in
250ksps; high-input impedance ( > 1MΩ)
High-impedance input saves the cost and space of
external amplifier
MAX1377/MAX1379/
MAX1383
12-bit, 1.25Msps, 4-channel,
simultaneous-sampling SAR ADCs
0 to 5V, 0 to 10V, or ±10V inputs; 70dB SNR; four
single-ended or two differential inputs; SPI interface
Serial interface saves cost and space on digital
isolators
MAX11040 24-bit, 4-channel, simultaneous-
sampling, sigma-delta ADC
117dB SNR; 64ksps; internal reference; SPI
interface; 38-pin TSSOP package
Reduces motor-control firmware complexity;
captures accurate phase and magnitude information
on up to 32 channels
MAX11103* 12-bit, 3Msps, 2-channel SAR ADC 73dB SNR; SPI interface; high 1.7MHz full linear
bandwidth; single-channel (SOT23) and 2-channel
(µMAX
®
, TDFN) options
Tiny SOT23, µMAX, and TDFN packages save
space; serial interface simplifies data transmission
Current-sense amplifiers
MAX9918/19/20 75V precision current sources -20 to +75V input sensing range Wide dynamic range supports wide range of motor
current-sensing applications
MAX4080/81 75V uni-/bidirectional current
sources
High-input voltage; bidirectional current source Monitor current direction (sink or source) across a
wide input-voltage range
MAX4210 Power and current-sense amp with
fault detection and alert flag
Continuously monitors power consumption and
system current levels with report out
Integrated functionality reduces design time in
motor-control applications
Operational amplifiers
MAX9943/44 High-voltage, precision, low-power
op amps
Wide 6V to 38V supply range; 2.4 MHz gain
bandwidth (GBW); withstands 40V transient on
any pin
Robust performance in harsh environmental
conditions
MAX9945 Low-noise, MOS-input, low-power
op amp
4.75V to 38V supply voltage range; low input-bias
current; low input-current noise; withstands 40V
transient on any pin
Robust performance in harsh environmental
conditions
MAX9650/51 20V high-output-drive op amps 1.3A output current drive Reliable and robust design; improve noise immunity
in motor-control loop
Variable-reluctance (VR) sensor interface
MAX9924–MAX9927 Reluctance (VR or magnetic coil)
sensor interface devices
Integrated precision amplifier and comparator
for small-signal detection; user-enabled, internal
adaptive peak threshold or flexible external threshold
Accurately detect position and speed of motors and
turning shafts; improve performance and reliability
in motor applications
Hall-effect sensor and interface
MAX9641* Dual Hall-effect sensor Three programmable sampling periods (160µs,
500µs, and 50ms); adjustable threshold levels
Simplifies motor-control designs; provides system
flexibility
MAX9621 Dual, 2-wire Hall-effect sensor
interface
Monitors the status of Hall-effect sensor either
through the analog output or through the filtered
digital output
Provides system design flexibility through analog
and digital outputs
Thermal management
DS7505 Low-voltage, precision digital
thermometer and thermostat
±0.5°C accuracy from 0ºC to +70ºC; 1.7V to 3.7V
operation; industry-standard pinout
Industry-standard pinout allows easy accuracy
upgrade and supply voltage reduction from LM75
MAX6675 K-type thermocouple-to-digital
converter
Built-in cold-junction compensation Simplest thermocouple interface; no external
components needed
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Recommended solutions
*Future part—contact factory for availability.