THS4552 Datasheet, PDF (19/71 Pages) Texas Instruments – Dual-Channel, Low-Noise, Precision, 150-MHz, Fully Differential Amplifier

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THS4552
SBOS831 – DECEMBER 2016
Typical Characteristics: 3-V to 5-V Supply Range (continued)
at T_A ≈ 25°C, VOCM pin = open, R_F = 1 kΩ, R_L = 1 kΩ, V_OUT = 2 V_PP, 50-Ω input match, G = 1 V/V, PD = V_S+, single-ended
input, differential output, and input and output referenced to default midsupply for ac-coupled tests (unless otherwise noted);
see Figure 61 for a gain of 1-V/V test circuit
3
0.6
2
1
0.4
0
-1
0.2
-2
-3
0
-4
-5
-0.2
-6
-7
-8
-9
100k
+5 V, 100 mVpp
+5 V, 1 Vpp
+3 V, 100 mVpp
+3 V, 1 Vpp
1M
10M
Frequency (Hz)
100M
D043
+5 V, 0.2-V step
-0.4
+5 V, 1-V step
+3 V, 0.2-V step
+3 V, 1-V step
-0.6
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Time(Ps)
D044
Figure 43. Common-Mode Voltage, Small- and Large-Signal
Response (VOCM Pin Driven)
1000
+3 V, VOCM Pin Driven
+5 V, VOCM Pin Driven
+3 V, VOCM Pin Floating
+5 V, VOCM Pin Floating
Figure 44. Common-Mode Voltage, Small- and Large-Step
Response (VOCM Pin Driven)
3
+3 V
+5 V
2
100
1
0
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
D045
The VOCM pin is either driven to midsupply by low-impedance
source or allowed to float and default to midsupply
Figure 45. Output Common-Mode Noise vs Frequency
120
+5 V
115
+3 V
110
105
100
95
90
85
80
0
1
2
3
4
5
V_OCM - (V_S-) (V)
D047
Simulated with single-ended to differential gain of 1,
PSRR for negative supply to differential output
Figure 47. –PSRR vs V_OCM Approaching V_S–
-1
0 0.5 1 1.5 2 2.5 3 3.5 4
V_OCM - (V_S-) (V)
D046
Average V_OCM output offset of 39 units,
standard deviation < 2 mV
Figure 46. V_OCM Offset vs V_OCM Setting
120
+5 V
115
+3 V
110
105
100
95
90
85
80
0
1
2
3
4
5
V_OCM - (V_S-) (V)
D048
Simulated with single-ended to differential gain of 1,
PSRR for positive supply to differential output
Figure 48. +PSRR vs V_OCM Approaching V_S+
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