Datasheet

Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
ELECTRICAL CHARACTERISTICS (continued)
(V
RS
+
= V
RS
-
= V
CC
= 2.7V to 24V, V
SENSE
= V
RS
+
- V
RS
-
= 0V, I
REFOUT
= 0, V
SHDN
= V
CC
, V
GSEL
= GND, V
REFIN
= 2.5V (MAX4072),
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C and at V
CC
= V
RS
+
= 12V.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
REFOUT (MAX4069/MAX4070/MAX4071)
T
A
= +25°C 2.44 2.49 2.54
MAX4069,
V
CC
= 12V
(Note 2)
T
A
= T
MIN
to T
MAX
2.39 2.59
T
A
= +25°C 2.45 2.5 2.55
MAX4070,
V
CC
= 12V
T
A
= T
MIN
to T
MAX
2.40 2.60
T
A
= +25°C 1.47 1.5 1.53
Reference Output Voltage V
REF
MAX4071,
V
CC
= 12V
T
A
= T
MIN
to T
MAX
1.44 1.56
V
-40°C ≤ T
A
≤ +85°C15
Reference Output Voltage
Temperature Coefficient
TCV
REF
V
CC
= 12V
T
A
= T
MIN
to T
MAX
20
ppm/°C
I
REFOUT
= 0 to 500µA 2
Load Regulation
ΔV
REFOUT
/ΔI
REF I
REFOUT
= 0 to -100µA 4
mV/mA
Line Regulation
ΔV
REF/
ΔV
CC
2.7V ≤ V
CC
≤ 24V 20 µV/V
REF Capacitive-Load Stability 500 pF
Reference Adjust Voltage
Threshold
V
ADJ
MAX4069, V
CC
= 12V 1.230 V
Reference Output Voltage Range
MAX4069, range adjustable with R1
and R2,
V
CC
= 12V
V
ADJ
to
+4
V
Reference Adjust Input Current I
ADJ
MAX4069, V
CC
= 12V, V
ADJ
= 1.23V 100 nA
REFIN (MAX4072 only)
Input-Voltage Range V
CC
= 12V 1 4 V
Input Current REFIN = 2.5V, V
CC
= 12V -60 +20 µA
Note 1: All devices are 100% tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 2: R1 = 215kΩ, R2 = 210kΩ for the MAX4069 only (see
Functional Diagram ). This sets REFOUT to 2.49V nominal.
Note 3: Guaranteed by the PSRR test.
Note 4: The REFOUT voltage for the MAX4069 should be set such that it does not exceed V
CC
- 1.1V. Similarly, the maximum REFIN
voltage for the MAX4072 should also be less than V
CC
- 1.1V.
Note 5: Input-Referred Offset Voltage is defined as the voltage difference between OUT and REFOUT, divided by the selected gain
of either 50 or 100, when V
SENSE
= V
RS+
- V
RS-
= 0V.
Note 6: The negative full-scale sense voltage is limited by the voltage range of OUT from V
REFOUT
to GND.
Note 7: Total OUT Voltage Error is the sum of offset voltage and gain errors. The output voltage is measured relative to the reference
(REFOUT or REFIN).
MAX4069–MAX4072
Maxim Integrated
5