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MAX20327 Evaluation Kit
Evaluate: MAX20327
General Description
The MAX20327 evaluation kit (EV kit) is a fully assembled
and tested circuit board that demonstrates the functionality
of the MAX20327 double-pole, double-throw (DPDT)
analog switches in a 9-bump wafer-level package (WLP).
The EV kits features enable evaluation of the analog
switches through audio jack inputs and outputs, as well
as SMA connectors for AC characteristic evaluation. Input
power to the EV kits is provided by a Micro-USB, type-B
connector or an external power supply.
Quick Start
Required Equipment
●
MAX20327 EV kit
●
USB power supply or 1.6V to 5.5V power supply
●
Audio source (e.g., MP3 player, computer, etc.)
●
External speakers or headphones with 3.5mm audio
jack
Procedure
Features
●
Proven PCB Layout
• Decreased Evaluation Time
●
Fully Assembled and Tested
●
SMA and 3.5mm Audio Jack Connectors
• Directly Evaluate AC Characteristics Through SMA
Connectors
• Quickly Evaluate Audio Performance with 3.5mm
Audio Jack Connectors
●
USB 5V Power with On-Board Adjustable LDO
The EV kits are fully assembled and tested. Follow the
steps below to verify board operation and begin evaluation:
1) If using a USB power supply to power the board
through the Micro-USB connector (J1), verify that a
shunt is installed shorting pins 3-4 on jumper JU2.
This powers the devices from the output of the on-
board LDO. To adjust the LDO output voltage, connect
a voltmeter at test point T3 and turn the screw on the
potentiometer (R3) until reaching the desired value. To
use the raw bus voltage as the power supply for the
devices, place the shunt so that it is shorting pins 5-6
on JU2.
2) If an external power supply is used, apply the power
at test point T2 and use the shunt to short pins 1-2 on
JU2 to provide power to the parts from the external
supply.
Ordering Information
appears at end of data sheet.
3) Verify that jumper JU1 has a shunt installed shorting
pins 2-3 and that jumper JU4 has a shunt installed
shorting pins 2-3. Installing the shunts in these locations
provides power from the source to the V
CC
pin of the
devices.
4) Verify that jumper JU3 has a shunt installed shorting
pins 1-2. This shorts the control bit (CB) on the devices
to GND, electrically connecting NC1 to COM1 and
NC2 to COM2.
5) Connect an audio source to the normally closed audio
jack (P2), using the male-to-male 3.5mm audio cable
included with the EV kit.
319-100231; Rev 0; 8/18
MAX20327 Evaluation Kit
Evaluate: MAX20327
6) Connect external speakers or headphones to the common
audio jack (P3).
7) When the audio source outputs the audio signal, and
JU3 has a shunt shorting pins 1-2, the audio signal
should be heard on the speakers or headphones
connected at P3.
8) Move the shunt on JU3 from pins 1-2 to pins 2-3. The
audio signal should no longer be heard on the speakers
or headphones connected at P3.
9) If the audio source connection moves from the
normally closed audio jack (P2) to the normally open
audio jack (P1) with a shunt in position 2-3 on JU3, the
audio signal on the common audio jack (P3) is heard
on the speakers or headphones. If the shunt on J3 is
in position 1-2, there is no audio signal heard on the
speaker or headphones.
Power Supply
The EV kits are powered by a user-supplied 1.6V to 5.5V
external DC power supply connected between V
EXT
and GND, the raw USB bus supplied at the micro-USB
connector (J1), or the regulated output of the LDO (U2)
that is powered by the USB bus.
AC Evaluation
Detailed Description of Hardware
The EV kits have a secondary IC configured for evaluation
of the AC characteristics of devices. SMA connectors
(J2–J5) allow for direct connection to a network analyzer.
50Ω termination resistors (R6, R7) provide termination to
match the typical 50Ω source resistance of the network
analyzer, allowing for easy evaluation of these parameters.
The ability to connect external DC bias voltages at test
points T7 and T8 further simplifies evaluation of AC
characteristics while using a network analyzer that cannot
provide DC offset voltages.
The MAX20327 EV kit is fully assembled and tested
circuit board that demonstrates the functionality of the
MAX20327 DTDT analog switches in a 9-bump WLP.
The EV kit features enables evaluation of the analog
switches through audio jack inputs and outputs, as well
as SMA connectors for AC characteristic evaluation. Input
power to the EV kits is provided by a Micro-USB, type-B
connector or an external power supply. The EV kit PCBs
are designed with 1oz copper.
V
BUS
Status LED
An indicator diode (D1) is included on the EV kits,
indicating that a V
BUS
voltage is present on the micro-
USB connector (J3). If the LED glows green, power is
present at J3 and the board can be powered by either
the LDO output or by the raw V
BUS
supply (see
Table 1
for jumper configurations). The status LED does not glow
when a voltage is present on test point T2.
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Maxim Integrated
│
2
MAX20327 Evaluation Kit
Evaluate: MAX20327
Table 1. Jumper Settings (J6, J7, JU1–JU4)
JUMPER
J6
J7
JU1
SHUNT
POSITION
1-2
3-4
1-2
3-4
1-2
2-3*
1-2
JU2
3-4*
5-6
JU3
JU4
*Default Position
1-2*
2-3
1-2
2-3*
DESCRIPTION
Connects NC1 on U2 to DC bias applied at test point T7 through a 475kΩ resistor
Connects COM1 on U2 to DC bias applied at test point T7 through a 475kΩ resistor
Connects NC2 on U2 to DC bias applied at test point T8 through a 475kΩ resistor
Connects COM2 on U2 to DC bias applied at test point T8 through a 475kΩ resistor
Connects V
CC
of U1 to GND; places U1 in shutdown mode
Connects V
CC
of U1 to the power-supply bus; places U1 in normal, powered operation
Connects the external power supply applied at T2 to the power-supply bus
Connects the regulated LDO output to the power-supply bus
Connects raw V
BUS
voltage from the USB to the power-supply bus
Connects CB of U1 and U2 to GND; NC_ and COM_ are electrically connected
Connects CB of U1 and U2 to V
CC
; NO_ and COM_ are electrically connected
Connects V
CC
of U2 to GND; places U3 in shutdown mode
Connects V
CC
of U2 to power supply bus; places U3 in normal, powered operation
Ordering Information
PART
MAX20327EVKIT#
#Denotes RoHS compliant.
TYPE
EV Kit
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Maxim Integrated
│
3
MAX20327 Evaluation Kit
Evaluate: MAX20327
MAX20327 EV Kit Bill of Materials
ITEM REF_DES
1
C1, C4
QTY
2
MFG PART #
GRM188R71C103KA01;
ECJ-1VB1C10; CL10B103KO8NNN
GRM21BR71A475KA73;
LMK212B7475KG-T;
C2012X7R1A475K125AC
GRM188R61A105KA61;
C1608X5R1A105K
SML-LX1206GW-TR
PMS_632_0031_PH
ZX62D-B-5PA8
142-0701-851
929647-09-04-I
929647-09-03-I
929665-09-03-I
SJ1-3523NG
CRCW080531K6FK;
ERJ-6ENF3162V
CRCW08057K32FK
3296W-1-104LF
CRCW0805100KFK;
RK73H2ATTD1003;
ERJ-6ENF1003V
ERJ-6GEYJ102V
CRCW080549R9FK;
ERJ-6ENF49R9
CRCW0805475KFK
SX1100-B
MANUFACTURER
MURATA; PANASONIC;
SAMSUNG
MURATA; TAIYO YUDEN;
TDK
MURATA/TDK
LUMEX
OPTOCOMPONENTS INC
GENERIC PART
HIROSE ELECTRIC CO LTD.
JOHNSON COMPONENTS
SAMTEC
3M
3M
CUI INC.
VISHAY DALE/PANASONIC
VISHAY DALE
BOURNS
VISHAY DALE/KOA SPEER/
PANASONIC
PANASONIC
VISHAY DALE;
PANASONIC
VISHAY DALE
KYCON
475K
SX1100-B
0.01UF
VALUE
DESCRIPTION
CAPACITOR; SMT (0603); CERAMIC CHIP;
0.01UF; 16V; TOL=10%; TG=-55 DEGC TO
+125 DEG; TC=X7R
CAPACITOR; SMT (0805); CERAMIC CHIP;
4.7UF; 10V; TOL=10%; TG=-55 DEGC TO
+125 DEGC; TC=X7R
CAPACITOR; SMT (0603); CERAMIC CHIP;
1UF; 10V; TOL=10%; MODEL=; TG=-55 DEGC
TO +85 DEGC; TC=X5R;
DIODE; LED; STANDARD; GREEN;
SMT (1206); PIV=2.2V; IF=0.02A;
-40 DEGC TO +85 DEGC
MACHINE FABRICATED; PAN- ;
6-32; 5/16IN; 8.8 ZINC PLATED STEEL
CONNECTOR; MALE; THROUGH HOLE;
MICRO-USB CONNECTOR; RIGHT ANGLE;
5PINS
CONNECTOR; END LAUNCH JACK RECEPTACLE;
BOARDMOUNT; STRAIGHT THROUGH; 2PINS;
CONNECTOR; MALE; THROUGH HOLE;
929 SERIES; STRAIGHT; 4PINS
CONNECTOR; MALE; THROUGH HOLE;
929 SERIES; STRAIGHT; 3PINS
CONNECTOR; MALE; THROUGH HOLE;
929 SERIES; STRAIGHT; 6PINS
CONNECTOR; FEMALE; THROUGH HOLE;
3.5MM NO SWITCH JACK STEREO,
RIGHT ANGLE; 3PINS
RESISTOR, 0805, 31.6K OHM, 1%,
100PPM, 0.125W, THICK FILM
RESISTOR; 0805; 7.32K OHM; 1%;
100PPM; 0.125W; THICK FILM
RESISTOR; THROUGH-HOLE-RADIAL LEAD;
100K OHM; 10%; 100PPM; 0.5W; MOLDER
CERAMIC OVER METAL FILM
RESISTOR; 0805; 100K; 1%; 100PPM;
0.125W; THICK FILM
RESISTOR; 0805; 1K OHM; 5%; 200PPM;
0.125W; THICK FILM
RESISTOR; 0805; 49.9 OHM; 1%; 100PPM;
0.125W; THICK FILM
RESISTOR; 0805; 475K; 1%; 100PPM;
0.125W; THICK FILM
TEST POINT; JUMPER; STR; TOTAL LENGTH=0.24IN;
BLACK; INSULATION=PBT;PHOSPHOR BRONZE
CONTACT=GOLD PLATED
TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.445IN;
BOARD HOLE=0.063IN; BLACK; PHOSPHOR BRONZE
WIRE SILVER PLATE FINISH;
TESTPOINT WITH 1.80MM HOLE DIA, RED,
MULTIPURPOSE
TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.445IN;
BOARD HOLE=0.063IN; WHITE; PHOSPHOR BRONZE
WIRE SILVER PLATE FINISH;
EVKIT PART - IC; PACKAGE OUTLINE DRAWING:
21-100195; PACKAGE CODE: W91P1+1
IC; VREG; ULTRA-LOW-IQ LOW-DROPOUT LINEAR
REGULATOR WITH POK; SOT23-6
PCB:MAX20327
CONNECTOR; MALE; WIREMOUNT;
STEREO CONNECTION CABLE,2.0M, 3-PIN,
3.5MM STEREO MALE TO MALE; STRAIGHT; 3PINS
CONNECTOR; MALE; USB; USB A PLUG TO MICRO
B PLUG CABLE ASSY; STRAIGHT; 4PINS-5PINS
COMMENTS
2
C2
1
4.7UF
3
C3, C5-C7
4
1UF
4
5
6
7
8
9
10
11
12
13
14
D1
H1-H4
J1
J2-J5
J6, J7
JU1, JU3, JU4
JU2
P1-P3
R1
R2
R3
1
4
1
4
2
3
1
3
1
1
1
SML-LX1206GW-TR
PMS_632_0031_PH
ZX62D-B-5PA8
142-0701-851
929647-09-04-I
929647-09-03-I
929665-09-03-I
SJ1-3523NG
31.6K
7.32K
100K
15
16
17
18
19
R4
R5
R6, R7
R8-R11
SU1-SU8
1
1
2
4
8
100K
1K
49.9
20
21
22
23
24
25
26
27
TOTAL
TP1, TP4-TP6
TP2, TP3
TP7, TP8
U1, U3
U2
PCB
MECH1, MECH2
MISC1
DNI
DNI
4
2
2
2
1
1
2
1
60
MAX20327
MAX8880EUT+
MAX20327
AK203-MM-R
68784-0001
5011 ?
5010 ?
5012 ?
MAXIM
MAXIM
MAXIM
ASSMANN
MOLEX
MAX20327
MAX8880EUT+
PCB
AK203-MM-R
68784-0001
5011
5010
5012
-
www.maximintegrated.com
Maxim Integrated
│
4
4
3
2
1
4
3
2
1
1
2
3
A1
A3
A2
CB
NC1
NC2
B2
2
COM2
JU1
EN
EXTERNAL LAB
POWER SUPPLY
BRDPWR
1
2
3
JU2
1
3
5
2
4
6
GND
B3
TP2
VEXT
J4
COM1
1
TP1
GND
U1
COM1
B1
3
MAX20327
IN
A1
A3
A2
CB
U3
MAX20327
NC1
NC2
CB
NO1
NO2
VCCEN
5
3
4
2
P3
SJ1-3523NG
1
1
2
4
3
5
C1
C3
C2
2
4
3
5
P1
SJ1-3523NG
1
C3
1UF
C1
0.01UF
C5
1UF
U2
3
4
6
1%
TP3
VBUS_ADJ
3
GND
COM2
B3
JU4
EN
NO1
NO2
IN
OUT
3
2
R4
100K
1%
MAX8880EUT+
1
IN
OUT
C1
C3
5
SHDN POK
GND
R1
31.6K
2
C2
ZX62D-B-5PA8
J1
1
2
VBUS PRESENT
2
1
VBUS
D-
D+
ID
GND
5
4
3
R5
1K
D1
R3
100K
R2
7.32K
1%
R6
49.9
1%
R7
49.9
1%
C4
0.01UF
IN
OUT
1
2
3
FB
VCCEN
C2
4.7UF
5
3
4
2
www.maximintegrated.com
P2
SJ1-3523NG
1
3
2
TP6
GND
J6
J7
TP5
GND
TP4
GND
JU3
BRDPWR
TP7
DC BIAS
R10
475K
1%
C6
1UF
1%
R11
475K
1%
C7
1UF
R8
475K
TP8
DC BIAS
R9
475K
1%
J3
NC2
1
MAX20327 Evaluation Kit
MAX20327 EV Kit Schematic
IN
CB
J5
NC1
J2
COM2
IN
COM1
COM1
B2
B1
IN
COM1
1
BRDPWR
Evaluate: MAX20327
Maxim Integrated
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5
FPGA/CPLD
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