AD8170/AD8174
–30
–40
HARMONIC DISTORTION – dB
–50
–60
–70
–2
–3
NORMALIZED FLATNESS – dB
C
L
= 300pF
+0.1
0
–0.1
–0.2
–0.3
–0.4
1M
C
L
= 300pF
C
L
=
100pF
C
L
=
50pF
C
L
= 50pF
C
L
=
100pF
2ND HARMONIC
–80
–90
–100
3RD HARMONIC
–110
*WORST CHANNEL
–120
0.5
1
10
FREQUENCY – MHz
100
–4
–5
–6
–7
–8
–9
1G
10M
100M
FREQUENCY – Hz
Figure 16. Harmonic Distortion vs. Frequency
Figure 19. Frequency Response vs. Capacitive Load, G = +2
1M
316k
100k
31.6k
DISABLED
IMPEDANCE –
Ω
(OR SHUTDOWN)
OUTPUT IMPEDANCE
10k
(G = +1)
ENABLED
(OR DISABLED)
INPUT
IMPEDANCE
V
IN
= +0.221V rms
G = +2
R
F
= 499Ω (AD8170R)
R
F
= 549Ω (AD8174R)
0
V
IN
= 50mV rms
G = +2
R
F
= 499Ω (AD8170R)
R
F
= 549Ω (AD8174R)
R
L
= 100Ω
–1
–2
–3
–4
–5
–6
–7
–8
–9
1G
NORMALIZED OUTPUT – dB
PHASE – Degrees
3.16k
NORMALIZED FLATNESS – dB
ENABLE,
SD = LOGIC 1;
G = +1
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
1M
ENABLE,
SD = LOGIC 1; G = +2
OUTPUT IMPEDANCE (G= +2)
1k
DISABLED (OR SHUTDOWN)
316
100
ENABLED OUTPUT IMPEDANCE (G = +2)
31.6
ENABLE,
SD = LOGIC 0, R
S(OUT)
= 50Ω
10
0.03
0.1
1
10
FREQUENCY – MHz
100
500
10M
100M
FREQUENCY – Hz
Figure 17. Input & Output Impedance vs. Frequency
Figure 20. Small Signal Frequency Response
0
–10
–20
–30
PSRR – dB
1M
180
TRANSIMPEDANCE –
Ω
V
IN
= 200mV rms
G = +2
R
F
= 499Ω (AD8170R)
R
F
= 549Ω (AD8174R)
R
L
= 100Ω
100k
TRANSIMPEDANCE
PHASE
10k
135
90
–PSRR
–40
–50
–60
–70
–80
0.03
+PSRR
1k
45
100
0
0.1
1
10
FREQUENCY – MHz
100
500
10
1k
10k
100k
1M
10M
FREQUENCY – Hz
100M
–45
1G
Figure 18. Power Supply Rejection vs. Frequency
Figure 21. Open-Loop Transresistance and Phase
vs. Frequency
REV. 0
–7–
NORMALIZED OUTPUT – dB
V
OUT
= 2V p-p
G = +2
R
F
= 499Ω (AD8170R)
R
F
= 549Ω (AD8174R)
R
L
= 100Ω
V
OUT
= 2V p-p
G = +2
R
F
= 1kΩ
R
S(OUT)
= 20Ω
C
L
= 20pF
C
L
= 0
0
–1
AD [ ANALOG DEVICES ]
