THS4520 Datasheet, PDF (13/37 Pages) Texas Instruments – WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER WITH RAIL-TO-RAIL OUTPUTS

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OPEN LOOP GAIN AND PHASE vs FREQUENCY
120
40
100
Gain
0
80
Phase
-40
60
-80
40
-120
20
-160
0
-200
1
100
10 k
1M
100 M 10 G
f − Frequency − Hz
Figure 25.
QUIESCENT CURRENT vs SUPPLY VOLTAGE
15
14.5
14
13.5
T_A = 25^oC
T_A = 85^oC
13
12.5
12
11.5
T_A = -40^oC
11
10.5
10
1.5
1.75
2
2.25
2.5
V_S - Supply Voltage - ±V
Figure 27.
OUTPUT BALANCE ERROR vs FREQUENCY
-20
R_F = 499 W
-30 R_L = 200 W
V_O = 1 V_PP
-40 V_S = ±2.5 V
Gain = 6 dB
-50
-60
Gain = 0 dB
-70
-80
-90
0.1
1
10
100
f - Frequency - MHz
Figure 29.
1000
THS4520
SLOS503B – SEPTEMBER 2006 – REVISED JULY 2007
INPUT REFERRED NOISE vs FREQUENCY
100
10
I_n
V_n
1
10
100
1k
10 k
100 k
1M
f − Frequency − Hz
Figure 26.
POWER SUPPLY CURRENT vs SUPPLY VOLTAGE IN
POWER-DOWN MODE
10
9
8
T_A = 85^oC
7
6
5
T_A = 25^oC
4
T_A = -40^oC
3
2
1
0
1.5
1.75
2
2.25
2.5
V_S - Supply Voltage - ±V
Figure 28.
CM SMALL SIGNAL FREQUENCY RESPONSE
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
R_F = 499 W
-11
-12
R_L = 200 W
-13 Gain = 0 dB
-14
-15
V_O = 100 mV_PP
-16 ^V_S ^{= ±2.5 V}
-17
-18
-19
-20
0.1
1
10
100
f - Frequency - MHz
1000
Figure 30.
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