Datasheet

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MAX34406
Quad Current-Sense Amplifier
with Overcurrent Threshold Comparators
Note 1: All devices are 100% production tested at T
A
= +25NC. All temperature limits are guaranteed by design.
Note 2: V
OUT1
, V
OUT2
, V
OUT3
, V
OUT4
= 0V. All open-drain outputs left disconnected.
Note 3: V
OS
is extrapolated from measurements for the gain-error test.
Note 4: Gain error is calculated by applying two values of V
SENSE
and calculating the error of the slope vs. the ideal: Gain = 100,
V
SENSE
is 5mV and 15mV.
Note 5: The device is stable for any external capacitance value.
ELECTRICAL CHARACTERISTICS (continued)
(V
INx+
= V
INx-
= 12V, V
SENSE
= 0V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are T
A
= +25NC) (Note 1)x
Typical Operating Characteristics
(V
INx+
= V
INx-
= 12V, T
A
= +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Leakage (SHTDN, OCx) I
O
Q1 FA
Comparator Threshold V
TH
0.98 1.00 1.02 V
Comparator Offset V
COS
Q5
mV
Comparator Hysteresis V
HYS
20 mV
Comparator Propagation Delay t
D
Overdrive = Q50mV, output load = 2mA
3
Fs
SHTDN Delay t
DLY
V
DD
= 3.3V, C
CDLY
= 10nF 3.3
ms
V
DD
= 3.3V, C
CDLY
= 22nF 7.3
V
DD
= 3.3V, C
CDLY
= 33nF 11
V
DD
= 5.0V, C
CDLY
= 10nF 5
V
DD
= 5.0V, C
CDLY
= 22nF 11
V
DD
= 5.0V, C
CDLY
= 33nF 16
+25°C INPUT OFFSET
MAX34406 toc01
OFFSET (µV)
% OF POPULATION (%)
10050-50 0-100-150
2
4
6
8
10
12
14
16
18
20
0
-200 150
+25°C GAIN ERROR
MAX34406 toc02
GAIN ERROR (%)
% OF POPULATION (%)
0.350.300.250.200.150.100.050-0.05-0.10
5
10
15
20
25
0
-0.15 0.40
V
OL
vs. I
OL
MAX34406 toc03
CURRENT IN (mA)
VOLTAGE (mV)
1.81.60.4 0.6 0.8 1.21.0 1.4
20
40
60
80
100
120
140
160
0
0.2 2.0
SHTDN
OC1