THS3215 Datasheet, PDF (19/71 Pages) Texas Instruments – THS3215 650-MHz, Differential to Single-Ended DAC Output Amplifier

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THS3215
SBOS780A – MARCH 2016 – REVISED APRIL 2016
7.12 Typical Characteristics: Midscale (DC) Reference Buffer
at +V_CC = 6.0 V, –V_CC = –6.0 V, R_LOAD = 150 Ω, and T_J ≈ 25˚C (unless otherwise noted)
1
0.6
0
0.4
-1
-2
0.2
-3
0
-4
-5
-0.2
-6
-0.4
-7
0.1V_PP
1.0V_PP
-8
-0.6
1M
10M
100M
700M
Frequency (Hz)
D049
100 mV_PP
1 V_PP
Time (20 ns/div)
D050
Figure 49. Frequency Response vs Output Voltage
100
I_O = 0 mA
I_O = -20 mA
I_O = 20 mA
10
1
0.1
0.01
100k
1M
10M
Frequency (Hz)
100M
D051
Figure 50. Step Response
60
GND I/P, I_LOAD= 0 mA
50
GND I/P, I_LOAD= -20 mA
GND I/P, I_LOAD= 20 mA
Float I/P, I_LOAD= 0 mA
40
Float I/P, I_LOAD= -20 mA
Float I/P, I_LOAD= 20 mA
30
20
10
0
-10
-40 -20
0 20 40 60 80
Junction Temperature (qC)
100 120
D052
Figure 51. Buffer Output Impedance vs Load Current
7
6
5
4
3
2
1
0
1
10
100
Load Capacitance (nF)
D053
R_LOAD = 150 Ω in parallel with C_LOAD, see the Midscale Buffer
R_OUT Versus C_LOAD Measurement section for circuit setup
Figure 53. Series Resistance vs Capacitive Load
Figure 52. Buffer Output Offset vs Load Current (I_LOAD)
3
0
-3
-6
No Cap
-9
1 nF
10 nF
100 nF
-12
1M
10M
100M
500M
Frequency (Hz)
D054
V_OUT = 100 mV_PP, R_LOAD = 150 Ω in parallel with C_LOAD, see
Midscale Buffer R_OUT Versus C_LOAD Measurement for circuit setup
Figure 54. Frequency Response vs Capacitive Load
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