Datasheet

MAX9926U Evaluation Kit
Evaluates: MAX9926U
4 ______________________________________________________________________________________
MAX9926U Mode A1, A2, and B Operation
The MAX9926U EV kit features jumpers to configure the
respective channel 1 and channel 2 VR sensor interface
circuit mode of operation. The circuit can be configured
for Mode A1, A2, or B operation. For channel 1, Table 4
lists the various jumper options for configuring the circuit.
Table 5 lists channel 2 options;
Mode B Operation: Supply a digital PWM signal to the
respective channel FILTER_ and GND pads. The signal
must provide a 5V logic-high frequency in the 25kHz to
100kHz range.
Refer to the Mode Selection section in the MAX9926U IC
data sheet for additional information on selecting a mode
of operation.
COUT1, COUT2, DIRN Outputs and V_PULL
The MAX9926U open-drain comparator outputs are
available at the COUT1, COUT2, and DIRN PCB pads.
The V_PULL PCB pad is provided to pull up the COUT1,
COUT2, and DIRN signals (R24, R29, and R27, respec-
tively) to the voltage connected to the V_PULL PCB pad.
V_PULL can accept voltages up to 5.5V after removing
jumper JU10. When installed, jumper JU10 pulls the
V_PULL pads up to VCC.
Table 4. Channel 1 Mode A1, A2, and B (JU1, JU2, JU5, JU6, JU7 Configuration)
Table 5. Channel 2 Mode A1, A2, and B (JU3, JU4, JU7, JU8, JU9 Configuration)
MODE
SHUNT POSITION
JU1
SENSOR
JU2
BIAS1
JU5
INT_THRS1
JU6
EXT1
JU7
ZERO_EN
A1 See Table 2 1-2 1-2 1-2 Not installed
A2 See Table 2 2-3 2-3 1-2 Installed
B See Table 2 1-2 2-3 1-3 Not installed
MODE
SHUNT POSITION
JU4
SENSOR
JU3
BIAS2
JU8
INT_THRS2
JU9
EXT2
JU7
ZERO_EN
A1 See Table 3 1-2 1-2 1-2 Not installed
A2 See Table 3 2-3 2-3 1-2 Installed
B See Table 3 1-2 2-3 1-3 Not installed