THS3217 Datasheet, PDF (61/73 Pages) Texas Instruments – THS3217 DC to 800-MHz, Differential-to-Single-Ended, DAC Output Amplifier

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THS3217
SBOS766B – FEBRUARY 2016 – REVISED FEBRUARY 2016
11 Power Supply Recommendations
The THS3217 typically operates on balanced, split supplies. The specifications and characterization plots use ±6
V in most cases. The full operating range for the THS3217 spans ±4 V to ±7.9 V. The input and output stages
have separate supply pins that are isolated internally.
The recommended external supply configuration brings ±V_CC into the output stage first, then back to the input
stage connections through a π-filter comprised of ferrite beads and added decoupling capacitors at +VCC2 (pin
16) and –VCC2 (pin 5). Figure 106 shows an example decoupling configuration.
Ferrite Bead
4H
Ferrite Bead
4H
6V
10 nF
220 nF
10 nF
220 nF
2.2 …F
Differential ^49.9
V_IN
49.9
16
15
1
50 k
2 x1
50 k
x1
50
+
250
500
3 x1
14
100
4
13
18.5 k
162
12
249
11
AV = 5 V/V
49.9
To
50-Ÿ /RDG
10
18.5 k
9
5
6
7
8
200
Ferrite Bead
4H
10 nF
220 nF
Ferrite Bead
4H
-6 V
10 nF
220 nF
2.2 …F
Figure 106. Recommended Power-Supply Configuration
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