Datasheet

OPA698
10
SBOS258D
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V (Cont.)
T
A
= +25°C, G = +2, R
F
= 402Ω, and R
L
= 500Ω, V
H
= –V
L
= 2V, unless otherwise noted.
RECOMMENDED R
S
vs CAPACITIVE LOAD
Resistance (Ω)
Capacitive Load (pF)
110
100
140
120
100
80
60
40
20
0
HARMONIC DISTORTION NEAR LIMITING VOLTAGES
Harmonic Distortion (dBc)
± Limit Voltage (V)
0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9
2.0
–40
–50
–60
–70
–80
–90
3rd-Harmonic
2nd-Harmonic
V
O
= 0V
DC
± 1V
P
f = 5MHz
R
L
= 500Ω
FREQUENCY RESPONSE vs CAPACITIVE LOAD
Gain to Capacitive Load (dB)
Frequency (Hz)
1 10 100
1k
9
6
3
0
–3
–6
V
O
= 0.2V
PP
C
L
= 100pF
C
L
= 47pF
C
L
= 10pF
C
L
= 22pF
OPA698
402Ω
R
S
402Ω
NOTE: (1) 1kΩ is optional.
1kΩ
(1)
C
L
V
IN
2-TONE, 3RD-ORDER INTERMODULATION
INTERCEPT ±5V 500Ω
Intercept Point (dBm)
Frequency (MHz)
010203040
50
50
45
40
35
30
25
20
G = +2V/V
OPA698
402Ω
402Ω
50Ω
500Ω
P
O
P
I
INPUT VOLTAGE AND CURRENT NOISE DENSITY
Voltage Noise (nV/√Hz)
Current Noise (pA/√Hz)
Frequency (Hz)
100 1k 1M100k10k
10M
100
10
1
Current Noise (2.2pA/√Hz)
Voltage Noise (5.6nV/√Hz)
OPEN-LOOP FREQUENCY RESPONSE
Open-Loop Gain (dB)
Frequency (Hz)
10k 100k 100M10M1M
1G
70
60
50
40
30
20
10
0
–10
Open-Loop Phase (°)
0
–30
–60
–90
–120
–150
–180
–210
–240
V
O
= 0.5V
PP
Phase
Gain