Texas Instruments TSW3070 High Speed DAC with Amplifiers Demonstration Kit TSW3070EVM TSW3070EVM Hoja De Datos
Los códigos de productos
TSW3070EVM
9.4
Baseband Filter
10
Schematic, Bill of Materials and Printed-Circuit Board Layout
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Schematic, Bill of Materials and Printed-Circuit Board Layout
Figure 19. Position of Ferrite Beads for Power Options
The TSW3070EVM has been designed to allow a fifth-order differential LC filter. The filter for the OPA695
is a fifth-order, low-pass filter with a corner at 200 MHz. This filter was designed with a 25-
is a fifth-order, low-pass filter with a corner at 200 MHz. This filter was designed with a 25-
Ω
source and
termination impedance to account for the DAC load and the operational amplifier input. The THS3091/5
filter is a fifth-order, low-pass filter with a corner at 100 MHz. This filter was designed with a 50-
filter is a fifth-order, low-pass filter with a corner at 100 MHz. This filter was designed with a 50-
Ω
impedance in mind. These filters can only be modified by bearing in mind the design of the DAC
termination and operational amplifier configuration. Both outputs of the amplifiers are intended to drive
50-
termination and operational amplifier configuration. Both outputs of the amplifiers are intended to drive
50-
Ω
test equipment.
The TSW3070EVM schematic, bill of materials, and board CAD design files can be found on the provided
compact disc.
compact disc.
SLWU055 – May 2008
TSW3070EVM: Amplifier Interface to Current Sink DAC - Arbitrary Waveform Generator Demonstration
27