Datasheet

OPA657
7
SBOS197E
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V (Cont.)
T
A
= +25°C, G
= +10, R
F
= 453, R
L
= 100, 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 4.8nV/Hz
Input Current Noise 1.3fA/Hz
2-TONE, 3RD-ORDER
INTERMODULATION SPURIOUS
10 8 6 4 242068
Single-Tone Load Power (dBm)
3rd-Order Spurious Level (dBc)
50
60
70
80
90
100
5MHz
15MHz
20MHz
10MHz
50
50
50
P
I
P
O
50
453
OPA657
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)
90
80
70
60
50
40
30
20
10
0
10
10
12
34
56
78
100
122
144
166
188
210
20 log(A
OL
)
< A
OL
RECOMMENDED R
S
vs CAPACITIVE LOAD
10 100 1k
Capacitive Load (pF)
R
S
()
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)
23
20
17
14
11
8
5
2
R
S
50
1k
V
I
V
O
C
L
50
453
OPA657
C
L
= 22pF
C
L
= 100pF
C
L
= 10pF