Datasheet

OPA656
7
SBOS196G
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V (Cont.)
T
A
= +25°C, G = +2, R
F
= 250Ω, R
L
= 100Ω, unless otherwise noted.
INPUT CURRENT AND VOLTAGE NOISE DENSITY
10 100 1k 10k 100k 1M 10M
f (Hz)
en (nV/√Hz)
in (fA/√Hz)
100
10
1
Input Voltage Noise 7nV/√Hz
Input Current Noise 1.3fA/√Hz
COMMON-MODE REJECTION RATIO AND
POWER-SUPPLY REJECTION RATIO vs FREQUENCY
1k 100k 1M 10M10k 100M
Frequency (Hz)
CMRR (dB)
PSRR (dB)
110
100
90
80
70
60
50
40
30
20
CMRR
+PSRR
–PSRR
OPEN-LOOP GAIN AND PHASE
1k100 100k 1M 10M10k 1G100M
Frequency (Hz)
Open-Loop Gain (dB)
Open-Loop Phase (30°/div)
70
60
50
40
30
20
10
0
0
–30
–60
–90
–120
–150
–180
–210
20 log(A
OL
)
< A
OL
RECOMMENDED R
S
vs CAPACITIVE LOAD
10 100 1k
Capacitive Load (pF)
R
S
(Ω)
100
10
1
For Maximally Flat Frequency Response
FREQUENCY RESPONSE vs CAPACITIVE LOAD
1 10 100 500
Frequency (MHz)
Normalized Gain to Capacitive Load (dB)
9
6
3
0
–3
–6
–9
–12
R
S
50Ω
1kΩ
V
I
V
O
C
L
250Ω
250Ω
OPA656
C
L
= 22pF
C
L
= 100pF
C
L
= 10pF
2-TONE, 3RD-ORDER
INTERMODULATION SPURIOUS
–10 –8 –6 –4 –242068
Single-Tone Load Power (dBm)
3rd-Order Spurious Level (dBc)
–30
–40
–50
–60
–70
–80
–90
–100
50Ω
50Ω
50Ω
P
I
P
O
250Ω
250Ω
OPA656
5MHz
2MHz
15MHz
10MHz