TYPICAL CHARACTERISTICS: VS = ±5V (Cont.)
TA = 25°C, G = +20V/V, RG = 39.2Ω, and RL = 100Ω, unless otherwise noted.
COMMON-MODE REJECTION RATIO AND
OPEN-LOOP GAIN AND PHASE
POWER-SUPPLY REJECTION RATIO vs FREQUENCY
120
110
100
90
120
100
80
0
CMRR
+PSRR
–30
–60
–90
–120
–150
–180
–210
20log (AOL
)
AOL
80
60
–PSRR
70
40
60
50
20
40
0
30
–20
20
102
103
104
105
Frequency (Hz)
106
107
108
102
103
104
105
106
107
108
109
Frequency (Hz)
CLOSED-LOOP OUTPUT IMPEDANCE vs FREQUENCY
G = +20V/V
OUTPUT VOLTAGE AND CURRENT LIMITATIONS
4
3
10
1
VDIS
ZO
RL = 100Ω
OPA847
2
1
750Ω
RL = 50Ω
RL = 25Ω
0
0.1
39.2Ω
–1
–2
–3
–4
0.01
0.001
–150
–100
–50
0
50
100
150
103
104
105
106
107
108
I
O (mA)
Frequency (Hz)
INVERTING OVERDRIVE RECOVERY
NONINVERTING OVERDRIVE RECOVERY
10
8
0.25
0.20
0.15
0.10
0.05
0
10
0.5
G = –40V/V
G = 50Ω
L = 100Ω
Input
Right Scale
G = +20V/V
L = 100Ω
8
6
0.4
R
R
R
6
0.3
Input
4
4
0.2
Right Scale
Output
Left Scale
2
2
0.1
0
0
0
–2
–4
–6
–8
–10
–0.05
–0.10
–0.15
–0.20
–0.25
–2
–4
–6
–8
–10
–0.1
–0.2
–0.3
–0.4
–0.5
Output
Left Scale
See Figure 2
See Figure 1
Time (40ns/div)
Time (40ns/div)
OPA847
SBOS251E
7
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TI [ TEXAS INSTRUMENTS ]
