AMC1204_1108 Datasheet, PDF (22/30 Pages) Texas Instruments – 20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204
SBAS512B – APRIL 2011 – REVISED AUGUST 2011
www.ti.com
Figure 51 shows an example of two AMC1204s and one ADS1209 (a dual-channel, 10MHz, non-isolated
modulator) connected to an AMC1210, building the entire analog front-end of a resolver-based motor control
application.
For detailed information on the ADS1209 and AMC1210, visit the respective device product folders at
www.ti.com.
Resolver
PWM1
PWM2
ADS1209
IN1
CLK1
IN2
Filter Module 1
Comparator
Filter
Input
Control
Sinc Filter/
Integrator
Time
Measurement
Current
Shunt
Resistor
CLK2
IN3
AMC1204 _CLK3
Current
Shunt
Resistor
AMC1204
IN4
CLK4
Filter
Module 2
Filter
Module 3
Filter
Module 4
Control Module
Signal
Generator
AMC1210
Interrupt
Unit
Register
Map
Interface
Module
CLK
RST
INT
ACK
CS
ALE
RD
WR
M0
M1
AD0
AD7
Figure 51. Example of a Resolver-Based Motor Control Analog Front-End
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