Datasheet

MAX98400B Evaluation Kit
Evaluates: MAX98400B
_______________________________________________________________________________________ 5
Table 2. Jumper Descriptions (U2) Table 3. Recommended EMI Filter
Components for 8I Loads
*Default position.
Note: 3A current-rating ferrite beads are recommended for 4 I
load drive.
*GAIN1_1 and GAIN2_1 set the gain for U1.
GAIN1_2 and GAIN2_2 set the gain for U2.
Table 4. Gain Jumper Descriptions*
JUMPER
SHUNT
POSITION
DESCRIPTION
SHDN_2
1-2*
Normal operation; U2 SHDN =
DVDD (external logic high)
Open
Shutdown; U2 SHDN = GND
TEMP_2
Open*
Thermal foldback enabled; U2
TEMPLOCK = unconnected
1-2
Thermal foldback disabled; U2
TEMPLOCK = GND
LIM_2
1-2*
Limiter disabled; U2 LIM_TH =
VS2
2-3
Limiter enabled in PVDD tracking
mode; U2 LIM_TH = GND
Open
Limiter programmable mode; U2
LIM_TH is determined
by R203, R204, and R205
JU204
1-2*
Single-ended input mode; U2
INL- = GND
Open
Differential input mode; U2 INL-
is not connected to GND
JU205
1-2*
Single-ended input mode; U2
INR- = GND
Open
Differential input mode; U2 INR-
is not connected to GND
GAIN1_2
1-2 U2 G1 = VS2
2-3* U2 G1 = GND
Open U2 G1 is not driven
GAIN2_2
1-2 U2 G2 = VS2
2-3 U2 G2 = GND
Open* U2 G2 is not driven
DESIGNATION DESCRIPTION
R111–R114
600I at 100MHz, 150mI DCR,
2A ferrite beads (0805)
Würth Elektronik 742792040
C111–C114
330pF Q10%, 50V X7R
ceramic capacitors (0603)
Murata GRM188R71H331K or
TDK C1608X7R1H331K
SHUNT POSITION
GAIN (dB)
GAIN1_1, GAIN1_2 GAIN2_1, GAIN2_2
2-3
2-3
9.0
Open 13.0
1-2 16.7
2-3
Open
20.1
Open 23.3
1-2 26.4
2-3
1-2
29.8
Open 32.9
1-2 Reserved