ACA2601 Datasheet, PDF (9/20 Pages) ANADIGICS, Inc – Fiber-to-the-Home RF Amplifier

All performance data measured using application circuit with input photodiode, as shown in Figure 16.
ACA2601
2
1.5
1
0.5
0
-0.5
-1
-1.5
-2
0
Figure 8: Gain Flatness To Best Fit Line over Temperature
(VCC = + 5 V, VAGC = +1.6 V)
+115C
+100C
+60C
+40C
+15C
-5C
-25C
-35C
100
200
300
400
500
600
700
800
900
1000
Frequency (MHz)
Table 6: Gain Flatness to Best Fit Line
(VAGC = +1.6 V)
Temp (^oC)
Tilt (dB)
Flatness (dB)
115
3.8
2.3
100
4.1
1.9
60
4.7
0.9
40
5.1
1.2
15
5.5
1.6
-5
5.8
1.9
-25
6
1.9
-35
6
1.6
The best fit line is calculated
using the least mean squares
method:
y = m⋅x+b
∑^{(x ⋅ y)− ∑ x ⋅ ∑ y}
m=
n
∑ ^{x2 − (∑ x)2}
n
b= ^∑y −m⋅^∑x
n
n
n = number of points
PRELIMINARY DATA SHEET - Rev 1.4
9
01/2006