Datasheet

OPA847
7
SBOS251E
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V (Cont.)
T
A
= 25°C, G = +20V/V, R
G
= 39.2Ω, and R
L
= 100Ω, unless otherwise noted.
120
110
100
90
80
70
60
50
40
30
20
COMMON-MODE REJECTION RATIO AND
POWER-SUPPLY REJECTION RATIO vs FREQUENCY
Frequency (Hz)
CMRR and PSRR (dB)
10
2
10
4
10
5
10
3
10
6
10
7
10
8
CMRR
+PSRR
–PSRR
120
100
80
60
40
20
0
–20
0
–30
–60
–90
–120
–150
–180
–210
OPEN-LOOP GAIN AND PHASE
Frequency (Hz)
Open-Loop Gain (dB)
Open-Loop Phase (°)
10
2
10
4
10
5
10
3
10
6
10
7
10
8
10
9
20log (A
OL
)
∠A
OL
4
3
2
1
0
–1
–2
–3
–4
OUTPUT VOLTAGE AND CURRENT LIMITATIONS
I
O
(mA)
V
O
(V)
–150 –100 –50 0 50 100 150
R
L
= 100Ω
R
L
= 25Ω
R
L
= 50Ω
10
1
0.1
0.01
0.001
CLOSED-LOOP OUTPUT IMPEDANCE vs FREQUENCY
Frequency (Hz)
Output Impedance (Ω)
10
3
10
4
10
5
10
6
10
7
10
8
G = +20V/V
750Ω
OPA847
Z
O
V
DIS
39.2Ω
10
8
6
4
2
0
–2
–4
–6
–8
–10
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
NONINVERTING OVERDRIVE RECOVERY
Time (40ns/div)
Output Voltage (V)
Input Voltage (mV)
See Figure 1
G = +20V/V
R
L
= 100Ω
Output
Left Scale
Input
Right Scale
10
8
6
4
2
0
–2
–4
–6
–8
–10
0.25
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
INVERTING OVERDRIVE RECOVERY
Time (40ns/div)
Output Voltage (V)
Input Voltage (mV)
See Figure 2
G = –40V/V
R
G
= 50Ω
R
L
= 100Ω
Output
Left Scale
Input
Right Scale