Datasheet

OPA843
7
SBOS268C
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V (Cont.)
T
A
= +25°C, G = +5, R
F
= 402Ω, R
G
= 100Ω, and R
L
= 100Ω, unless otherwise noted.
CMRR AND PSRR vs FREQUENCY
Frequency (Hz)
10
1
10
4
10
3
10
2
10
5
10
6
10
7
10
8
Common-Mode Rejection Ratio (dB)
Power-Supply Rejection Ratio (dB)
120
100
80
60
40
20
0
CMRR
+PSRR
–PSRR
OPEN-LOOP GAIN AND PHASE
Frequency (Hz)
10
1
10
3
10
2
10
4
10
5
10
6
10
7
10
8
10
9
Open-Loop Gain (dB)
120
100
80
60
40
20
0
–20
Open-Loop Phase (°)
0
–30
–60
–90
–120
–150
–180
–210
∠A
OL
20log (A
OL
)
OUTPUT VOLTAGE AND CURRENT LIMITATIONS
I
O
(mA)
–0.15 –0.1 –0.05 0 0.05 0.1 0.15
V
O
(V)
4
3
2
1
0
–1
–2
–3
–4
1W Internal
Power Limit
1W Internal
Power Limit
R
L
= 25
R
L
= 100
R
L
= 50
CLOSED-LOOP OUTPUT IMPEDANCE
vs FREQUENCY
Frequency (Hz)
10
2
10
3
10
4
10
5
10
6
10
7
10
8
Output Impedance (Ω)
10
1
0.1
0.01
0.001
0.0001
0.00001
OPA843
402Ω
100Ω
Z
O
NONINVERTING OVERDRIVE RECOVERY
Time (40ns/div)
Output Voltage (1V/div)
Input Voltage (200mV/div)
5
4
3
2
1
0
–1
–2
–3
–4
–5
1
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
Output
Left Scale
Input
Right Scale
R
L
= 100Ω
G = 5
See Figure 1
INVERTING OVERDRIVE RECOVERY
Time (40ns/div)
Output Voltage (1V/div)
Input Voltage (200mV/div)
5
4
3
2
1
0
–1
–2
–3
–4
–5
1
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
Output
Left Scale
Input
Right Scale
R
L
= 100Ω
G = –8
See Figure 2