MAX9919 Maxim, MAX9919 Datasheet - Page 16

• Manufacturer Part Number: MAX9919
• Description: The MAX9918/MAX9919/MAX9920 are single-supply, high-accuracy current-sense amplifiers with a high input common-mode range that extends from -20V to +75V
• Manufacturer: Maxim

-20V to +75V Input Range, Precision
Uni-/Bidirectional, Current-Sense Amplifiers
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50mV (typ)
MAX9918
50mV (typ)
MAX9920
200mV (typ)
R
R
I
I
SENSE
SENSE
LOAD
LOAD
RS+
RS+
RS-
RS-
GAIN IS SET BY EXTERNAL RESISTORS, R1 AND R2
G = [1+(R2/R1)] FOR MAX9918
G = [1+(R2/R1)]/4 FOR MAX9920
SHDN
SHDN
LEVEL SHIFTER
LEVEL SHIFTER
INPUT STAGE/
INPUT STAGE/
MAX9919F
MAX9918
MAX9920
INPUT
INPUT
V
GND
V
GND
CC
CC
PROCESS: BiCMOS
A
G = 45V/V OR 90V/V
ADJUSTABLE GAIN
FIXED GAIN
A
R2
R1
OUT
FB
REFIN
OUT
FB
REFIN
Functional Diagram
Chip Information
R2
R1