Datasheet

MAX9922/MAX9923
Ultra-Precision, High-Side
Current-Sense Amplifiers
8 _______________________________________________________________________________________
INPUT NOISE DENSITY
vs. FREQUENCY
MAX9922/23 toc15
FREQUENCY (Hz)
10,0001,000100
50
100
150
200
250
0
10
100,000
NOISE DENSITY (nV/√Hz)
32kHz SPIKE ENERGY
= 4.3µVRMS
1s/div
PEAK-TO-PEAK NOISE
(0.1Hz TO 10Hz)
MAX9922/23 toc16
1.25µV/div
LARGE SIGNAL INPUT
STEP RESPONSE (MAX9922, A
V
= 100)
MAX9922/23 toc17
TIME (200µs/div)
INPUT
(10mV/div)
OUTPUT
(1V/div)
0V
0V
POWER-ON RESPONSE
(MAX9922, A
V
= 100)
MAX9922/23 toc18
TIME (80µs/div)
OUT
(500mV/div)
V
DD
(1V/div)
V
SENSE
= 10mV
0V
0V
SHUTDOWN ON/OFF TRANSIENT
(MAX9922, A
V
= 100)
MAX9922/23 toc19
TIME (200µs/div)
SHDN
(1V/div)
OUTPUT
(500mV/div)
V
SENSE
= 10mV
0V
0V
Typical Operating Characteristics (continued)
(V
DD
= 3.3V, V
SHDN
= V
DD
, V
RSB
= V
RS+
= V
RS-
= 12V, T
A
= +25°C, unless otherwise noted.)