MAX40201 Evaluation Kit
Evaluates: MAX40201
General Description
The MAX40201 evaluation kit (EV kit) provides a proven
design to evaluate the MAX40201 dual-channel, high-
precision, high-voltage, current-sense amplifier. This EV
kit demonstrates the MAX40201 in an ultra-small, 1.3mm
x 2mm, 8-bump wafer-level package (WLP).
The EV kit PCB comes with a MAX40201FAWA+ installed,
which is the 50V/V gain version. Other gain options are
available. Contact the factory for the pin-compatible
MAX40201TAWA+ (G = 25V/V), MAX40201HAWA+
(G = 100V/V), and MAX40201WAWA+ (G = 200V/V).
Quick Start
Required Equipment
●
MAX40201 EV kit
●
+3.3V, 1A DC power supply
●
+5V, 3A DC power supply
●
An electronic load capable of sinking 3A
(i.e., HP6060B)
●
Two digital voltmeters
The following items are required for operation:
EV Kit Contents
Features
Procedure
●
MAX40201 EV Kit Board
●
Precision Real-Time Current Monitoring
●
0V to +76V Input Common-Mode Range
●
Proven PCB Layout
●
Fully Assembled and Tested
Ordering Information
appears at end of data sheet.
The MAX40201 EV kit is fully assembled and tested.
Follow the steps below to verify the board operation.
Caution: Do not turn on power supply or the electronic
load until all connections are made.
1)
Connect the positive terminal of the +3.3V supply to
the VDD test point and the negative terminal of the
supply to the nearest GND test point.
Connect the positive terminal of the +5V supply to the
VSENSE+ test point and the negative terminal of the
supply to the nearest GND test point.
Set the electronic load to sink 1A.
Connect the positive terminal of the electronic load to
the VSENSE- test point and the negative terminal of
the supply to the nearest GND test point.
Connect the first voltmeter between test points RS1+
and RS1- to measure V
SENSE1
.
Connect the second voltmeter between VOUT1 and
the nearest GND test points.
Turn on the power supplies.
Enable the electronic load.
Verify that the first voltmeter displays 50mV and the
second voltmeter displays 2.5V.
2)
3)
4)
5)
6)
7)
8)
9)
10)
Repeat the steps for the second current sense amplifier
using the VSENSE2+ and VSENSE2- test points as
the inputs and VOUT2 test point as the output.
319-100006; Rev 0; 3/17
MAX40201 Evaluation Kit
Evaluates: MAX40201
Detailed Description of Hardware
Measuring the Load Current
The MAX40201 EV kit provides a proven design to evaluate
the MAX40201 high-side, dual-channel, current-sense
amplifier, which offers precision accuracy specifications of
input offset voltage (V
OS
) less than 10µV (max) and gain
error less than 0.1% (max).
Applying the V
RS+
Supply and the Load
The EV kit is installed with a MAX40201FAWA+, which
has a 50V/V gain. The current-sense resistors (R
SENSE
)
value is 0.05Ω with ±0.5% tolerance. The V
OUT
for each
channel given by:
V
OUT
= I
LOAD
x R
SENSE
x A
V
where A
V
is the gain and I
LOAD
is the current load applied
to the device. Normal operating V
RS+
and V
RS-
range is
0V to 76V.
The load current is measured as a voltage drop (V
SENSE
)
across an external sense resistor. This voltage is then
amplified by the current-sense amplifier and presented
at its VOUT_ pin. Like all differential amplifiers, the output
voltage has two components of error (an offset error and
a gain error). The offset error affects accuracy at low
currents and a gain error affects accuracy at large
currents. Both errors affect accuracy at intermediate
currents. By minimizing both offset and gain errors,
accuracy can be optimized over a wide dynamic range.
MAX40201 EV Kit Bill of Materials
ITEM
1
C1
REF_DES
DNI/DNP QTY
-
1
MFG PART #
C0603C104K4RAC; GCM188R71C104KA37;
C1608X7R1C104K; GRM188R71C104K;
C0603X7R160-104KNE
GRM21BR71C475KA73
MANUFACTURER
KEMET/MURATA/TDK/VENKEL LTD.
VALUE
0.1UF
DESCRIPTION
CAPACITOR; SMT (0603); CERAMIC CHIP; 0.1µF; 16V;
TOL = 10%; TG = -55°C TO +125°C; TC = X7R;
CAPACITOR; SMT (0805); CERAMIC CHIP; 4.7µF; 16V;
TOL = 10%; MODEL = GRM SERIES; TG = -55°C TO +125°C; TC = X7R
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE = 0.063IN; BLACK;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
RESISTOR; 1206; 0.05Ω;
0.5%; 50PPM; 0.5W; METAL FILM
RESISTOR; 0603; 0Ω; 0%; JUMPER; 0.10W; THICK FILM
TEST POINT; PIN DIA = 0.1IN; TOTAL LENGTH = 0.3IN;
BOARD HOLE = 0.04IN; RED;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
EVKIT PART-IC; DUAL 0V TO 76V CURRENT SENSE AMPLIFIER;
0Z36; PACKAGE OUTLINE: 21-100147; WLP8
TESTPOINT WITH 1.80MM HOLE DIA, RED, MULTIPURPOSE;
CAPACITOR; SMT (1206); CERAMIC CHIP; 1000PF; 100V;
TOL = 10%; TG = -55°C TO +125°C; TC = X7R
CAPACITOR; SMT (0603); CERAMIC CHIP; 180PF; 50V;
TOL = 10%; MODEL = C0G; TG=-55°C TO +125°C; TC = +/
PCB Board:MAX40201 EVALUATION KIT
COMMENTS
2
C2
-
1
MURATA
4.7UF
3
4
5
GND, TP1-TP4
R1, R2
R3-R8
-
-
-
5
2
6
5011
LVK12R050DE
CRCW06030000ZS; MCR03EZPJ000;
ERJ-3GEY0R00
5000
KEYSTONE
OHMITE MFG CO.
VISHAY DALE/ROHM/PANASONIC
N/A
0.05
0
6
RS1+, RS1-, RS2+, RS2-
-
4
KEYSTONE
N/A
7
U1
VDD, VOUT1, VOUT2,
VSENSE1+, VSENSE1-,
VSENSE2+, VSENSE2-
C3-C8
C9, C10
PCB
-
1
MAX40201
MAXIM
MAX40201
8
-
7
5010
KEYSTONE
N/A
9
10
11
TOTAL
DNP
DNP
-
0
0
1
28
C1206C102K1RAC
C0603C181K5GAC
MAX40201
KEMET
KEMET
MAXIM
1000PF
180PF
PCB
NOTE:
DNI--> DO NOT INSTALL ; DNP--> DO NOT PROCURE
www.maximintegrated.com
Maxim Integrated
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2
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