Data Sheet
ADA4857-1/ADA4857-2
Rev. C | Page 9 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
T = 25°C, G = +1, RF = 0 , and, RG open, RS = 100 for SOIC, (for G = +2, RF = RG = 499 ), unless otherwise noted.
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
1
10
100
1000
07040-
008
FREQUENCY (MHz)
N
OR
M
A
LIZE
D
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
G = +1
G = +2
G = +5
G = +10
VS = ±5V
RL = 1k
VOUT = 0.2V p-p
Figure 8. Small Signal Frequency Responses for Various Gains (LFCSP)
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
1
10
100
1000
07040-
009
FREQUENCY (MHz)
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
G = +1
RL = 1k
VOUT = 0.2V p-p
±5V
+5V
Figure 9. Small Signal Frequency Response for Various Supply Voltages (LFCSP)
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
1
10
100
1000
07040-
010
FREQUENCY (MHz)
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
–40°C
+125°C
+25°C
G = +1
VS = ±5V
RL = 1k
VOUT = 0.2V p-p
Figure 10. Small Signal Frequency Response for Various Temperatures (LFCSP)
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
1
10
100
1000
07040-
011
FREQUENCY (MHz)
N
OR
M
A
LIZE
D
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
G = +1
G = +2
G = +10
VS = ±5V
RL = 1k
VOUT = 2V p-p
G = +5
Figure 11. Large Signal Frequency Responses for Various Gains (LFCSP)
1
10
100
1000
07040-
012
FREQUENCY (MHz)
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
NO CAP LOAD
G = +2
VS = ±5V
RL = 1k
VOUT = 0.2V p-p
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
9
5pF
10pF
Figure 12. Small Signal Frequency Response for Various Capacitive Loads (LFCSP)
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
1
10
100
1000
07040-
013
FREQUENCY (MHz)
C
LOS
E
D
-LOOP
GA
IN
(
dB
)
G = +1
VS = ±5V
RL = 100
1V p-p
4V p-p
Figure 13. Large Signal Frequency Response vs. VOUT (LFCSP)