THS3215 Datasheet, PDF (52/71 Pages) Texas Instruments – THS3215 650-MHz, Differential to Single-Ended DAC Output Amplifier

THS3215
SBOS780A – MARCH 2016 – REVISED APRIL 2016
10 Application and Implementation
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NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
10.1.1 Typical Applications
The five example designs presented show a good, but not comprehensive, range of the possible solutions that
the THS3215 provides. Numerous more configurations are clearly possible to the creative designer.
10.1.1.1 High-Frequency, High-Voltage, Dual-Output Line Driver for AWGs
6V
6V
Differential
Filter
VPATHSEL = 3.3 V
16
15
14
13
102
50 k
1
100
x1
50 k
50
2 x1
+
18.5 k
12
OPS AV= 2.96 V/V
203
49.9
11
VOUT= 5 VPP
Either 2.5 VPP
or
10 VPP at Load
VO
To
50-Ÿ /RDG
250
500
3 x1
10
18.5 k
4
5
±6 V
9
6
7
8
±6 V
50-MHz, 3rd-order Bessel filter
90.9
250 nH
25-MHz, 3rd-order
Bessel filter
270 nH
402
10
39 pF
49.9 Ÿ
10
200 pF
+15V
+
THS3095
AV= 3.8 V/V
± THS3095
-15V
1.2 k
432
11 pF
52 pF ₄₆₄
Figure 95. Dual-Channel Design: 5 V_PP at THS3215 Output and 20 V_PP at THS3095 Output
10.1.1.1.1 Design Requirements
For this design example, use the parameters listed in Table 7 as the input parameters.
Table 7. Dual-Output Design Specifications
DESIGN PARAMETER
High-frequency, THS3215 channel
High-voltage, THS3095 channel
EXAMPLE VALUE
5-V_PP, 50-MHz bandwidth
20-V_PP, 25-MHz bandwidth
52
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