Datasheet

TMC2100 DATASHEET (Rev. 1.07 / 2017-MAY-15) 38
www.trinamic.com
Sense resistor voltage levels
DC-Characteristics
f
CLK
=16MHz
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Sense input peak threshold
voltage
V
SRT
Sine wave peak, low
hysteresis
320
mV
Sense input tolerance / motor
current full scale tolerance
-using internal reference
I
COIL
-5
+5
%
Sense input tolerance / motor
current full scale tolerance
-using external reference voltage
I
COIL
Analog scaling via
AIN
-2
+2
%
Internal resistance from pin BRxy
to internal sense comparator
(additional to sense resistor)
R
BRxy
20
mΩ
Digital pins
DC-Characteristics
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Input voltage low level
V
INLO
-0.3
0.3 V
VIO
V
Input voltage high level
V
INHI
0.7 V
VIO
V
VIO
+0.3
V
Input Schmitt trigger hysteresis
V
INHYST
0.12
V
VIO
V
Output voltage low level
V
OUTLO
I
OUTLO
= 2 mA
0.2
V
Output voltage high level
V
OUTHI
I
OUTHI
= -2 mA
V
VIO
-0.2
V
Input leakage current
I
ILEAK
-10
10
µA
Pullup / pull-down resistors used
for tristate detection on CFGx
R
PU
/R
PD
132
166
200
kΩ
Tristate detection toggle
frequency
f
TOGGLE
1/1024
f
CLK
Time to detect open CFG pin
t
CFG
3072
t
CLK
Digital pin capacitance
C
3.5
pF
AIN/IREF input
DC-Characteristics
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
AIN_IREF input resistance to 2.5V
(=5VOUT/2)
R
AIN
Measured to GND
260
330
400
kΩ
AIN_IREF input voltage range for
linear current scaling
V
AIN
Measured to GND
0
0.5-2.4
V
5VOUT
/2
V
AIN_IREF open input voltage
level
V
AINO
Open circuit voltage
V
5VOUT
/2
V
AIN_IREF input resistance to
GND for reference current input
R
IREF
Measured to GND
0.8
1
1.2
kΩ
AIN_IREF current amplification
for reference current to coil
current at maximum setting
I
REFAMPL
I
IREF
= 0.25 mA
3000
Times
Motor current full scale tolerance
-using RDSon measurement
I
COIL
I
IREF
= 0.25 mA
-10
+10
%