Specifications

129Motor Control: Featured Products
Benefits
• Industry-leading dynamic range
allows early detection of error signals
◦ 93dB SNR and -105dB THD
• Simultaneous sampling eliminates
phase-adjust firmware requirements
◦ 8-, 6-, or 4-channel ADC options
◦ Lower system cost by as much as
15% over competing simultaneous-
sampling ADCs
◦ High-impedance input saves costly
precision op amp
◦ Bipolar input eliminates level shifter
◦ Single 5V voltage supply
◦ 20mA surge protection
• Eliminate external protection
components, saving space and cost
◦ Integrated analog-input clamps and
small 8mm x 8mm TQFN package
provide the highest density per
channel
Resolve Very Fine Motor Adjustments and
Operate Higher Accuracy Systems with
Simultaneous-Sampling ADCs
MAX11044/MAX11045/MAX11046
MAX11047/MAX11048/MAX11049
The MAX11044–MAX11049 ADCs are an ideal t for motor control applications
that require a wide dynamic range. With a 93dB signal-to-noise ratio (SNR), these
ADCs detect very ne changes to motor currents and voltages, which enables a
more precise reading of motor performance over time. The MAX11044/MAX11045/
MAX11046 simultaneously sample four, six, or eight analog inputs, respectively. All
ADCs operate from a single 5V supply. The MAX11044–MAX11046 ADCs measure
±5V analog inputs, and the MAX11047–MAX11049 measure 0 to 5V. These ADCs also
include analog input clamps that eliminate an external buer on each channel.
The MAX11046 ADC simultaneously samples up to 8 analog-input channels.
16-BIT
ADC
16-BIT
ADC
16-BIT
ADC
16-BIT
ADC
16-BIT
ADC
POSITION
ENCODER
DSP-BASED DIGITAL
PROCESSING ENGINE
IGBT CURRENT DRIVERS
I
PHASE1
THREE-PHASE ELECTRIC MOTOR
I
PHASE3
I
PHASE2
MAX11046