TMC2100 DATASHEET (Rev. 1.07 / 2017-MAY-15)
38
Sense resistor voltage levels
Parameter
Sense input peak threshold
voltage
DC-Characteristics
fCLK=16MHz
Symbol Conditions
Min
Typ
320
Max Unit
mV
VSRT
Sine wave peak, low
hysteresis
Sense input tolerance / motor
current full scale tolerance
-using internal reference
Sense input tolerance / motor
current full scale tolerance
-using external reference voltage
ICOIL
-5
-2
+5
+2
%
ICOIL
Analog scaling via
AIN
%
Internal resistance from pin BRxy RBRxy
to internal sense comparator
20
mΩ
(additional to sense resistor)
Digital pins
DC-Characteristics
Symbol Conditions
Parameter
Min
-0.3
0.7 VVIO
Typ
Max Unit
Input voltage low level
Input voltage high level
Input Schmitt trigger hysteresis
VINLO
VINHI
VINHYST
0.3 VVIO
VVIO+0.3
V
V
V
0.12
VVIO
Output voltage low level
Output voltage high level
Input leakage current
Pullup / pull-down resistors used RPU/RPD
for tristate detection on CFGx
VOUTLO
VOUTHI
IILEAK
IOUTLO = 2mA
IOUTHI = -2mA
0.2
V
V
µA
kΩ
VVIO-0.2
-10
132
10
200
166
Tristate detection toggle
frequency
fTOGGLE
1/1024
fCLK
Time to detect open CFG pin
Digital pin capacitance
tCFG
C
3072
tCLK
pF
3.5
AIN/IREF input
Parameter
DC-Characteristics
Symbol Conditions
Min
Typ
Max Unit
400 kΩ
AIN_IREF input resistance to 2.5V RAIN
(=5VOUT/2)
AIN_IREF input voltage range for VAIN
linear current scaling
AIN_IREF open input voltage
level
Measured to GND
Measured to GND
Open circuit voltage
Measured to GND
IIREF = 0.25mA
260
330
0
0.5-2.4 V5VOUT/2
V5VOUT/2
V
V
VAINO
AIN_IREF input resistance to
GND for reference current input
AIN_IREF current amplification
for reference current to coil
current at maximum setting
RIREF
0.8
1
1.2
kΩ
IREFAMPL
3000
Times
Motor current full scale tolerance ICOIL
-using RDSon measurement
IIREF = 0.25mA
-10
+10
%
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TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
