Rainbow Electronics MAX9920 - Manual (Page 6)

MAX9918/MAX9919/MAX9920
-20V to +75V Input Range, Precision
Uni-/Bidirectional, Current-Sense Amplifiers
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ELECTRICAL CHARACTERISTICS (continued)
(V CC = 5V, V RS+ = V RS- = +14V, V SENSE = (V RS+ - V RS- ) = 0V, V SHDN = V GND = 0V, V REFIN = V CC /2, R L = 100kΩ; for MAX9918, A V =
90V/V, R2/R1 = 89kΩ/1kΩ; for MAX9920, A V = 20V/V, R2/R1 = 79kΩ/1kΩ; T A = -40°C to +125°C, unless otherwise noted. Typical val-
ues are at T A = +25°C.) (Note 1)
PARAMETERS SYMBOL CONDITIONS MIN TYP MAX UNITS
V CM = -2V to +14V step 2.5 MAX9918,
V
SENSE = 50mV V CM = +14V to -2V step 0.5
V CM = -2V to +14V step 2.5 MAX9919F,
V
SENSE = 50mV V CM = +14V to -2V step 0.5
V CM = -2V to +14V step 3.5 MAX9919N,
V
SENSE = 50mV V CM = +14V to -2V step 3.5
V CM = -2V to +14V step 0.25
1% Settling Time from V
CM
Step
MAX9920,
V
SENSE = 200mV V CM = +14V to -2V step 2.5
μs
MAX9918, V SENSE = 50mV, 1% settling 4.5
MAX9919F, V SENSE = 50mV, 1% settling 5
MAX9919N, V SENSE = 50mV, 1% settling 6
Power-Up Time
MAX9920, V SENSE = 200mV, 1% settling 5
μs
Max Capacitive Load Stability No sustained oscillations (Note 5) 50 pF
MAX9918, MAX9919_ 60 Input Referred Noise Voltage
Density
e n 10kHz
MAX9920 174
nV/ √Hz
Note 1: All devices are 100% production tested at T A = +25°C. All temperature limits are guaranteed by design.
Note 2: V OS is extrapolated from two point gain error tests. Measurements are made at V SENSE = 5mV and 50mV for
MAX9918/MAX9919N/MAX9919F, and V SENSE = 20mV and 200mV for MAX9920.
Note 3: Extrapolated V OS as described above in Note 2 is used to calculate V OS drift, CMRR, and PSRR.
Note 4: OUT should be 100mV away from either rail to achieve rated accuracy, or limited by a V SENSE of 50mV for the
MAX9918/MAX9919N/MAX9919F and 200mV for the MAX9920.
Note 5: Not production tested. Guaranteed by design.