Chopper-Stabilized Op Amps
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V+ = +5V, V- = -5V, T = +25°C, unless otherwise noted.)
A
SUPPLY CURRENT vs.
AMBIENT TEMPERATURE
COMMON-MODE INPUT VOLTAGE RANGE
vs. SUPPLY VOLTAGE
INPUT OFFSET VOLTAGE
vs. CHOPPING FREQUENCY
8
7
6
5
4
3
2
1
0
3
2
1
0
-10
-8
-6
-4
-2
0
NEGATIVE LIMIT
POSITIVE LIMIT
-50 -25
0
25
50
75 100 125
0
1
2
3
4
5
6
7
8
10
100
1k
10k
AMBIENT TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
CHOPPING FREQUENCY (CLOCK OUT) (Hz)
INPUT OFFSET VOLTAGE CHANGE
vs. SUPPLY VOLTAGE
10Hzp-p NOISE VOLTAGE
vs. CHOPPING FREQUENCY
OPEN-LOOP GAIN AND PHASE SHIFT
vs. FREQUENCY
ICL7650toac09
-3
-2
-1
0
5
4
3
2
1
0
160
140
120
100
80
50
70
90
110
130
1
60
2
R = 10kΩ
EXT
40
L
C
= 0.1µF
3
20
4
6
8
10
12
14
16
10
100
1k
10k
0.01 0.1
1
10 100 1k
FREQUENCY (Hz)
10k 100k
TOTAL SUPPLY VOLTAGE (V)
CHOPPING FREQUENCY (CLOCK-OUT) (Hz)
OPEN-LOOP GAIN AND PHASE SHIFT
vs. FREQUENCY
VOLTAGE FOLLOWER LARGE-SIGNAL
PULSE RESPONSE
VOLTAGE FOLLOWER LARGE-SIGNAL
PULSE RESPONSE
ICL7650toac10
160
140
120
100
80
3
3
2
2
1
50
CLOCK OUT LOW
1
70
CLOCK OUT LOW
90
0
0
110
130
CLOCK OUT HIGH
-1
-2
-3
-1
-2
-3
60
CLOCK OUT HIGH
R = 10kΩ
EXT
40
L
C
= 1.0µF
20
0.01 0.1
1
10 100 1k
FREQUENCY (Hz)
10k 100k
-1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5 3.0
-1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5 3.0
TIME (µs)
TIME (µs)
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
