TSW3070EVM Introduction
17
SLWU055A – May 2008 – Revised May 2016
Copyright © 2008–2016, Texas Instruments Incorporated
TSW3070EVM: Amplifier Interface to Current Sink DAC - Arbitrary Waveform
Generator Demonstration
6
TSW3070EVM Introduction
The TSW3070EVM was designed to provide a robust yet flexible evaluation system for the DAC5682Z as
used in an arbitrary waveform generation system. The EVM includes, in addition to the DAC5682Z, a
CDCM7005 for clock distribution, an OPA695, THS3091, and THS3095 active output interface designed to
drive into a 50-
Ω
termination. For a complete hardware description, consult the schematics and layout
documents included on the provided CD.
6.1
Jumper Settings
The TSW3070EVM has onboard jumpers that allow you to modify the board configuration.
explains the functionality of the jumpers.
Table 4. Jumper List
Jumper
Label
Function
Condition
Default
JP8
EXTLO
Internal (GND) or external (3.3V) voltage reference
GND
Pin 2-3
JP10
VFUSE
Factory use only. Connect to 1.8VDD for normal operation.
1.8 VDD
Pin 1-2
JP11
THS PD
Low-active power down of THS3091 and THS3095
+Vamp
Pin 1-2
JP12
CDC_PD
Low-active power down of CDCM7005
3.3 VCLK
Pin 1-2
JP13
VCXOB
Choose internal VCXO or external VCXO INB
Internal VCXO
Pin 1-2
JP14
VCXO_P
Choose internal VCXO or external VCXO positive input
Internal VCXO
Pin 1-2
JP15
VCXO_N
Choose CDCM7005 or external VBB
CDCM7005
Pin 1-2
JP16
REF_CLK
Choose internal 10-MHz ref or external ref
Internal Ref
Pin 2-3
JP19
+3.3VCLK
VCXO power supply
VCXO on
Pin 1-2
6.2
Input and Output Connectors
lists the input and output connectors.
Table 5. Input and Output Connections
Reference
Designator
Label
Connector Type
Description
J1
IOUTB2
SMA
DACB transformer output. Optional IOUTB2 output.
J3
IOUTA2
SMA
DACA transformer output. Optional IOUTA2 output.
J5
SAMTEC
Input LVDS data to DAC682z. Output clock to data source.
J6
EXT_VCXO_P
SMA
External main clock input.
J7
EXT_VCXO_N
SMA
External VCXO negative connection. Not required.
J8
Y2A_CLK
SMA
Optional CDCM7005 clock output.
J9
EXT_REF_C
SMA
External reference clock input.
J10
Y2B_CLK
SMA
Optional CDCM7005 clock output.
J13
USB_CONN
USB
USB connector for software communication.
J12, J25
6-V input and return
Banana Plug
6-V input voltage pair
J16
THS3091, THS3095
OUT
SMA
Output of the THS3091 and THS3095 amplifier
J11
OPA695 OUT
SMA
Output of the OPA695 amplifier