MAX34406 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – Quad Current-Sense Amplifier with Overcurrent Threshold Comparators

19-5930; Rev 0; 6/11
EVALUATION KIT AVAILABLE
MAX34406
Quad Current-Sense Amplifier
with Overcurrent Threshold Comparators
General Description
The MAX34406 is a quad, high-side, unidirectional, cur-
rent-sense amplifier that offers precision accuracy. It
provides analog outputs for each of the four amplifiers
that can be routed to an external ADC, and contains four
overcurrent comparators with a fixed 1.0V threshold. All
four comparators are logically ORed, and the result can
be delayed/filtered with an external capacitor before it is
fed to a latched common shutdown open-drain output pin.
Applications
Network Switches/Routers
Base Stations
Servers
Smart Grid Network Systems
Industrial Controls
Features
S Four Precision Current-Sense Amplifiers
S Fixed Gains of 25V/V, 50V/V, 100V/V, and 200V/V
S Less Than ±600µV of Input Offset
S Less Than ±0.6% of Gain Error (T/F/H) or ±0.8% of
Gain Error (W)
S Wide 2.0V to 28V Common Mode Range
S Analog Voltage Outputs for Each Amplifier
S Independent Overcurrent Comparators with Fixed
1.0V Threshold
S Low Power Consumption
S -40NC to +85NC Temperature Range
S Small 24-Pin TQFN (4mm x 4mm) Package
Ordering Information appears at end of data sheet.
Block Diagram
R1
INx+
4
R1
INx-
4
P
R_OUT
6V
CLAMP
4
1.0V
REFERENCE
OUTx
GND
V_DD
AMPLIFIER 4
POR
AMPLIFIER 3
AMPLIFIER 2
AMPLIFIER 1
OR
ENA
MAX34406
N
4
OCx
OR
CLR
5µA
D
SHTDN
N
CK Q
N
LATCH THRESHOLD = VDD x 50%
CDLY
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX34406.related
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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.