SH4
DNP
SH5
DNP
SH6
DNP
SH7
DNP
20V
D2
SH9
DNP
VDD CORE SUPPLY SELECTION & BYPASSING
POWER SUPPLY INPUTS
0.1µF
0402
C27
0.1µF
0402
C43
0.1µF
0402
C44
0.1µF
0402
C45
0.1µF
0402
C46
0.1µF
0402
C47
0.1µF
0402
C48
SH2_1-2
4.7µF
C25
1µF
C13
Vout = 0.8 * (1 + Ra/Rb)
Vout=1.8V (open): Ra=4.99k, Rb=3.92k
Vout=2.5V (short pins 2-3): Ra=4.99k, Rb=3.92k // 5.76k=2.33k
Vout=3.3V: (short pins 1-2) Ra=4.99k, Rb=3.92k // 2.67k=1.59k
4.99k
R13
1.62k
R14
SH10
DNP
SH11
DNP
SH12
DNP
SH13
DNP
SH14
DNP
1
2
3
JP3
VDDO
0.01µF
C19
OUT
1
OUT
2
FB/SNS
3
GND
4
EN
5
NR
6
IN
7
IN
8
PAD
9
U3
TPS7A8001DRB
4.7µF
C26
1µF
C14
4.99k
R15
3.92k
R16
0.01µF
C20
OUT
1
OUT
2
FB/SNS
3
GND
4
EN
5
NR
6
IN
7
IN
8
PAD
9
U4
TPS7A8001DRB
Ra
Rb
Ra
Rb
TP4
GND
DNP
TP5
GND
DNP
TP6
GND
DNP
TP7
GND
DNP
1
2
3
JP2
VDD
1
2
3
JP9
VDDO01
DNP
1
2
3
JP10
VDDO23
DNP
1
2
3
JP11
VDDO4
DNP
1
2
3
JP12
VDDO5
DNP
1
2
3
JP13
VDDO6
DNP
1
2
3
JP14
VDDO7
DNP
VDDO01
VDDO23
VDDO4
VDDO5
VDDO6
VDDO7
5.76k
R17
2.67k
R18
LDO_SEL_3V3
LDO_SEL_2V5
LDOVDD
LDOVDDO
EXTVDD
EXTVDDO
1
J4
VDD_R
SH1_2-3
USB5V
1
2
3
JP1
LDOIN
TP12
LDOVDD
DNP
TP13
LDOVDDO
DNP
+3.3V
0.1µF
C1
EXTVDD
EXTVDDO
1µF
C9
0.015
1206
1%
R1
GND
2
IN+
4
IN-
5
REF
1
V+
3
OUT
6
U1
INA214BIDCK
ADC0
+3.3V
0.1µF
C2
1µF
C10
GND
2
IN+
4
IN-
5
REF
1
V+
3
OUT
6
U2
INA214BIDCK
ADC1
0.015
1206
1%
R2
Vout = (I_load x Rshunt) x Gain + Vref
1.5V @ 1A
1.5V @ 1A
VDD CURRENT MONITOR
VDDO CURRENT MONITOR
3.3V REGULATOR
1.8/2.5/3.3V REGULATOR
220 ohm
0402
FB5
220 ohm
0402
FB6
220 ohm
0402
FB7
220 ohm
0402
FB8
220 ohm
0402
FB9
220 ohm
0402
FB10
220 ohm
0402
FB1
220 ohm
0402
FB2
220 ohm
0402
FB3
220 ohm
0402
FB4
VDDDIG
VDDIN
USER NOTE:
Most applications may not require as many ferrite beads and decoupling / bypass caps. Multiple bypass caps in
parallel are used to provide low power supply impedance over a wide frequency range for general evaluation.
A f errite bead and bulk cap may be shared to supply multiple output banks with the same PLL/frequency, but
each VDDO pin should have its own bypass cap.
3-way Header Alignment:
1-pin header is adjacent to center pin of
3-pin header, and is the "4th" pin.
33k
R7
33k
R8
10µF
C21
VDDPLL1
0.1µF
0402
C28
0.1µF
0402
C29
0.1µF
0402
C30
VDDPLL2
10µF
C37
10µF
C38
10µF
C39
10µF
C40
Green
1
2
D4
VDD
I=
2
m
A
510
R5
VDD_R
Green
1
2
D5
VDDO
I=
2
m
A
510
R6
VDDO OUTPUT SUPPLY SELECTION & BYPASSING
VDD_Plane
VDDO_Plane
VDD_Plane
LDOIN
LDOVDD
LDOVDDO
LDOIN
LDOIN
VDDO_Plane
VDD_R
I=
2
m
A
Place all 0.1u close to DUT
VDDO_R
LABEL PINS:
1 = USB
2 = LDOIN
3 = VIN
LABEL PINS:
1 = VDD
2 = <JP NAME>
3 = GND
TP1
LDOIN
DNP
TP2
VDD
DNP
TP3
VDDO
DNP
10µF
1206
C3
10µF
1206
C4
10µF
1206
C5
LABEL PINS:
1 = 3.3V
2 = 1.8-3.3V
3 = GND
LABEL PINS:
1 = LDO
2 = VDD
3 = EXT
LABEL PINS:
1 = LDO
2 = VDDO
3 = EXT
4 = VDD
LABEL PINS:
1 = VDDO
2 = <JP NAME>
3 = GND
LABEL JP PINS:
1 = 3.3V
2 = 1.8V (open)
3 = 2.5V
0
R9
0
R10
0
R11
0
R12
TP8
VDDDIG
DNP
TP10
VDDPLL1
DNP
TP9
VDDIN
DNP
TP11
VDDPLL2
DNP
0
R19
0
R20
0
R21
0
R22
0
R23
0
R24
TP14
VDDO01
DNP
TP15
VDDO23
DNP
TP16
VDDO4
DNP
TP17
VDDO5
DNP
TP18
VDDO6
DNP
TP19
VDDO7
DNP
10µF
C22
10µF
C23
10µF
C24
10µF
1206
C7
10µF
1206
C8
Place all 0.1u caps close to
DUT
10µF
C41
10µF
C42
0.1µF
0402
C15
0.1µF
0402
C16
0.1µF
0402
C17
0.1µF
0402
C18
0.1µF
0402
C31
0.1µF
0402
C32
0.1µF
0402
C33
0.1µF
0402
C34
0.1µF
0402
C35
0.1µF
0402
C36
0.1µF
C6
1
2
3
Q1
BSS138
VDDO_R
VDD_R
LDOIN
1.5k
R3
Green
1
2
D3
LDOIN
1.5k
R4
SH3_1-2
SH8
DNP
20V
D1
1
2
3
4
5
J1
3.3-3.6V
1
2
3
4
5
J2
1.8-3.3V
1
2
3
JP4
VDDDIG
DNP
1
2
3
JP5
VDDIN
DNP
1
2
3
JP6
VDDPLL1
DNP
1
2
3
JP7
VDDPLL2
DNP
1
2
3
J3
PWR
1
2
3
JP8
LDOSEL
1µF
C11
1µF
C12
EVM Schematic
34
LMK03328EVM User’s Guide
SNAU184 – August 2015
Copyright © 2015, Texas Instruments Incorporated