Datasheet

MAX9934
High-Precision, Low-Voltage, Current-Sense Amplifier
with Current Output and Chip Select for Multiplexing
8
Maxim Integrated
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, V
RS+
= V
RS-
= 3.0V, V
SENSE
= 0V, C
L
= 1000pF, R
OUT
= 10kΩ to GND for unidirectional operation, R
OUT
= 10kΩ to
V
CC
/2 for bidirectional operation. T
A
= +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9934 toc22
FREQUENCY (kHz)
PSRR (dB)
101.00.1
-100
-80
-60
-40
-20
0
-120
0.01 100
OUTPUT SETTING TIME
vs. PERCENTAGE OF FINAL VALUE
MAX9934 toc23
PERCENTAGE OF FINAL VALUE (%)
SETTING TIME (ms)
0.10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
1.00
0.01
±1V V
OUT
STEP
MAX9934T
MAX9934F
100µs/div
LARGE-SIGNAL INPUT STEP
RESPONSE (MAX9934F)
V
SENSE
20mV/div
V
OUT
500mV/div
MAX9934 toc24
0.01% FINAL VALUE
1% FINAL VALUE
2V
1V
400µs/div
LARGE-SIGNAL INPUT STEP
RESPONSE (MAX9934T)
V
SENSE
5mV/div
V
OUT
500mV/div
MAX9934 toc25
0.01% FINAL VALUE
1% FINAL VALUE
2V
1V
MAX9934 toc26
1V
1V
40Fs/div
V
CS
2V/div
V
OUT
500mV/div
V
OUT
500mV/div
1% FINAL VALUE
0.1% FINAL VALUE
0.1% FINAL VALUE
MAX9934T
MAX9934F
1% FINAL VALUE
OUTPUT SELECT TIME
4µs/div
CS DISABLED TRANSIENT RESPONSE
C
OUT
= 10pF (MAX9934T)
V
CS
2V/div
V
OUT
1V/div
MAX9934 toc27
C
L
= 0