MAX9938 Maxim, MAX9938 Datasheet - Page 2

• Manufacturer Part Number: MAX9938
• Description: The MAX9938 high-side current-sense amplifier offers precision accuracy specifications of VOS less than 500µV (max) and gain error less than 0
• Manufacturer: Maxim

1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
ABSOLUTE MAXIMUM RATINGS
RS+, RS- to GND....................................................-0.3V to +30V
OUT to GND .............................................................-0.3V to +6V
RS+ to RS- ...........................................................................±30V
Short-Circuit Duration: OUT to GND ..........................Continuous
Continuous Input Current (Any Pin)..................................±20mA
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS
(V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
Supply Current (Note 2)
Common-Mode Input Range
Common-Mode Rejection Ratio
Input Offset Voltage (Note 3)
Gain
Gain Error (Note 4)
Output Resistance
OUT Low Voltage
OUT High Voltage
Small-Signal Bandwidth
(Note 5)
Output Settling Time
RS+
4-Bump UCSP (derate 3.0mW/°C above +70°C).........238mW
5-Pin SOT23 (derate 3.9mW/°C above +70°C)............312mW
6-Pin μDFN (derate 4.5mW/°C above +70°C) .............358mW
_______________________________________________________________________________________
= V
RS-
PARAMETER
= 3.6V, V
SENSE
= (V
RS+
A
= +70°C)
- V
SYMBOL
RS-
CMRR
R
V
V
V
V
I
BW
GE
OUT
CC
G
t
CM
OH
) = 0V, T
OS
OL
S
A
V
V
V
V
Guaranteed by CMRR , -40°C < T
1.6V < V
T
-40°C < T
MAX9938T
MAX9938F
MAX9938H
MAX9938W
M AX 9938T/M AX 9938F/
MAX9938H
MAX9938W
(Note 5)
Gain = 25
Gain = 50
Gain = 100
Gain = 200
V
V
V
V
V
1% final value, V
A
RS+
RS+
RS+
RS+
OH
SENSE
SENSE
SENSE
SENSE
= -40°C to +85°C, unless otherwise noted. Typical values are at T
= +25°C
= V
= 5V, T
= 5V, -40°C < T
= 28V, T
= 28V, -40°C < T
= 50mV, gain = 25
= 50mV, gain = 50
= 50mV, gain = 100
= 50mV, gain = 200
RS-
RS+
A
< +85°C
- V
A
< 28V, -40°C < T
A
= +25°C
OUT
CONDITIONS
= +25°C
SENSE
(Note 6)
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (excluding UCSP, soldering, 10s).....+300°C
Soldering Temperature (reflow) .......................................+260°C
A
A
< +85°C
= 50mV
< +85°C
T
- 40°C < T
T
- 40°C < T
MAX9938T/F/H
MAX9938W
A
A
= +25°C
= +25°C
A
< +85°C
A
A
A
< + 85°C
< + 85°C
< +85°C
14.0
MIN
1.6
7.0
94
±100
±0.1
±0.1
TYP
130
100
200
125
100
0.5
1.1
1.5
0.1
25
50
10
20
12
60
30
15
3
6
A
= +25°C.) (Note 1)
±500
±600
MAX
±0.5
±0.6
±0.7
±0.8
0.85
13.2
26.4
120
1.1
1.8
2.5
0.2
28
15
30
60
UNITS
kHz
V/V
mV
μA
dB
μV
kΩ
μs
%
V
V