19-4487; Rev 0; 3/09
MAX9922 Evaluation Kit
Evluates:/MAX923
General Description
Features
The MAX9922 evaluation kit (EV kit) is a fully assembled
and tested PCB used to evaluate the MAX9922 and
MAX9923 ultra-precision, high-side current-sense
o Bidirectional or Unidirectional Current Sensing
o Shutdown Logic Input Control
amplifiers. An ultra-low offset voltage (V ) of 10µV
OS
o Multiple Gains Available
Adjustable (MAX9922)
25V/V (MAX9923T)
(max) allows accurate measurement of currents at both
extremes of sense voltages (V
), from 10mV to
SENSE
100mV. The EV kit has a 1.9V to 28V input common-
mode sense voltage range that is independent of the
100V/V (MAX9923H)
250V/V (MAX9923F)
2.85V to 5.5V V
supply.
DD
o 2.85V to 5.5V Supply Range (V
)
DD
The MAX9922 EV kit comes assembled with the
MAX9922 IC with adjustable gain, but can also evaluate
the MAX9923 ICs with fixed gains of 25V/V
(MAX9923T), 100V/V (MAX9923H), and 250V/V
(MAX9923F). The MAX9922/MAX9923 are capable of
both unidirectional and bidirectional operation.
o 1.9V to 28V Input Common-Mode Range
Independent of V
DD
o Lead(Pb)-Free and RoHS Compliant
o Fully Assembled and Tested
Ordering Information
PART
TYPE
MAX9922EVKIT+
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
Component List
COMPONENT QTY
DESCRIPTION
COMPONENT QTY
DESCRIPTION
R2
R3
1
1
1
2
249kΩ 0.1ꢀ resistor (0ꢁ03)
4.7µF 10ꢀ, ꢁ.3V X5R ceramic
capacitor (0ꢁ03)
Murata GRM188R70J475K
TDK C1ꢁ08X5R0J475K
1kΩ 0.1ꢀ resistor (0ꢁ03)
100kΩ 5ꢀ resistor (0ꢁ03)
1kΩ 5ꢀ resistors (0ꢁ03)
C1
1
R4
R5, Rꢁ
0.1µF 10ꢀ, 25V X7R ceramic
capacitors (0ꢁ03)
TDK C1ꢁ08X7R1E104K
Murata GRM188R71E104K
Not installed, resistors—short PC
trace (0ꢁ03)
R7, R8, R9
0
1
C2, C7
C3, C4, C5, C8
Cꢁ
2
0
1
Test point
Keystone 5000
SHDN
Not installed, capacitors (0ꢁ03)
High-side current-sense amplifier
(10 µMAX®)
Maxim MAX9922EUB+
1000pF 10ꢀ, 50V X7R ceramic
capacitor (0ꢁ03)
Murata GRM1885C1H102J
TDK C1ꢁ08X7R1H102K
U1
1
—
—
3
1
Shunts
PCB: MAX9922/3 Evaluation Kit+
JU1, JU2
JU3
2
1
2-pin headers
3-pin header
µMAX is a registered trademark of Maxim Integrated Products, Inc.
0.1Ω 1ꢀ current-sense resistor
(120ꢁ)
R1
1
IRC LRC-LR120ꢁLF-01-R100-F
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.