ISL55211 Datasheet, PDF (8/20 Pages) Intersil Corporation – Wideband, Low Noise, Low Distortion, Fixed Gain, Differential Amplifier

ISL55211
Typical Performance Curves V_s+ = 3.3V, T_A ≈ +25°C, unless otherwise noted. (Continued)
200
PHASE OF 17dB
180
PHASE OF 15dB
1.7
TEST CIRCUIT 1
WITH ADT2-1T INPUT _1.6
160
PHASE OF 9dB
1.5
1.4
140
1.3
120
1.2
GROUP DELAY OF 17dB
100
GROUP DELAY OF 15dB
1.1
GROUP DELAY OF 9dB
80
10 30 50 70 90
1.0
110 130 150 170 190
FREQUENCY (MHz)
15
14
13
12
11
10
9
8
7
6
5
1M
GAIN = 17dB
GAIN = 15dB
GAIN = 9dB
TEST CIRCUIT 1 ADT2-1T
OUTPUT NOISE INCLUDING
50Ω SOURCE NOISE
10M
FREQUENCY (Hz)
100M
FIGURE 15. PHASE AND GROUP DELAY vs GAIN
FIGURE 16. DIFFERENTIAL OUTPUT NOISE vs GAIN
3
6dB
0
-3
12dB
-6
14dB
-9
TEST CIRCUIT 2
NO TRANSFORMERS
-12
10
100
FREQUENCY (MHz)
1000
FIGURE 17. SMALL SIGNAL FREQUENCY RESPONSE
5000
12
TEST CIRCUIT 2
SIMULATED
10
8
6
GAIN = 2
4
GAIN = 5
GAIN = 4
2
0
1M
10M
100M
FREQUENCY (Hz)
FIGURE 18. DIFFERENTIAL OUTPUT IMPEDANCE
1000M
3
0
-3
200mV_P-P
10mV_P-P
-6
-9
-12
-15
-18 _{TEST CIRCUIT 3}
COMMON MODE AC OUTPUT
-21
1
10
FREQUENCY (MHz)
100
200
FIGURE 19. V_CM PIN INPUT FREQUENCY RESPONSE TO OUTPUT
COMMON MODE
-50
TEST CIRCUIT 3
V_O(P-P) DIFFERENTIAL IS 2V_P-P
-55
9dB
-60
15dB
-65
-70
17dB
-75
-80
2M
20M
FREQUENCY (Hz)
FIGURE 20. OUTPUT BALANCE ERROR
200M
8
FN7868.0
June 21, 2011