TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C, VS = +5V, and RL = 10kΩ connected to VS/2, unless otherwise noted.
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
OPEN-LOOP GAIN, COMMON-MODE REJECTION RATIO,
AND POWER-SUPPLY REJECTION vs TEMPERATURE
1
0.1
140
120
100
80
AOL
OPA344: G = 1
OPA345: G = 5
CMRR
PSRR
60
0.010
0.001
40
20
0
20
–75
–75
100
1k
10k 20k
–75
–50
–25
0
25
50
75
100
125
Frequency (Hz)
Temperature (°C)
QUIESCENT CURRENT AND
SHORT-CIRCUIT CURRENT vs TEMPERATURE
INPUT BIAS CURRENT vs TEMPERATURE
200
175
150
135
100
75
40
10000
1000
100
10
35
30
25
20
15
10
5
IQ
+ISC
–ISC
50
1
25
0.1
0
0
–75
–50
–25
0
25
50
75
100
125
–50
–25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
INPUT BIAS CURRENT
SLEW RATE vs TEMPERATURE
vs COMMON-MODE VOLTAGE
6
4
3.0
2.5
2.0
1.5
1.0
0.5
0
SR–
SR+
V–
Supply
V+
Supply
OPA345
2
0
OPA344
SR–
SR+
–2
–4
–6
Input voltage ≤ –0.3V
can cause op amp output
to lock up. See text.
–1
0
1
2
3
4
5
6
–50
–25
0
25
50
75
100
125
Common-Mode Voltage (V)
Temperature (°C)
®
OPA344, 2344, 4344
OPA345, 2345, 4345
6
BB [ BURR-BROWN CORPORATION ]
