參數(shù)資料
型號(hào)： DAC5574EVM
廠商： Texas Instruments, Inc.
英文描述： DAC5574 Evaluation Module(DAC5574評(píng)估模塊)
中文描述： DAC5574評(píng)估模塊（DAC5574評(píng)估模塊）
文件頁(yè)數(shù)： 12/39頁(yè)
文件大小： 437K
代理商： DAC5574EVM
EVM Basic Functions
1-4
1.2.2
Reference Voltage
The 5-V precision voltage reference is provided to supply the external voltage
reference for the DAC8571 only through REF02, U3, via jumper TP9 by
shorting pins 1 and 2. The reference voltage goes through an adjustable 5-k
potentiometer R11 in series with 0-
R10, to allow the user to adjust the
reference voltage.
Caution
To avoid potential damage to the EVM board, make sure that the
correct cables are connected to their respective terminals as
labeled on the EVM board.
Stresses above the maximum listed voltage ratings may cause
permanent damage to the device.
Header J4 pin 20 provides a connection point for an alternative external
reference source if desired. In this configuration the jumper on TP9 must be
removed and TP8 must be shorted. The external voltage reference must not
exceed 5 V.
The REF02 circuit also provides an alternative adjustable analog supply for
U1, U4, and U8 (whichever is installed on the EVM) through W1 pin 1 if desired.
It also provides both reference and supply voltages for U4 by shorting TP9.
Since it is possible to install all DAC devices (U1, U4 and U8) on the EVM, the
possibility of different supply requirements may arise. To isolate the supply and
reference voltages of U4 from U1 and U8, remove R25 and install R38. This
allows the DAC8571 (U4) to operate using the REF02 (U3) as its supply and
reference sources while U1 and U8 are supplied by 5 VA.
The REF02 precision reference is powered by V
CC
(+15V) through J1-3 or
J6-1.
Caution
When applying an external voltage reference through J4-20, make
sure that it does not exceed +5 V maximum. Otherwise, this can
permanently damage the DAC8571, U4, device under test.
1.3
EVM Basic Functions
This EVM is a functional platform to evaluate the features and characteristics
of the DAC7574, DAC6574, DAC5574, DAC7571, DAC6571, DAC5571, and
DAC8571 digital-to-analog converters. The EVM can be used with a
microprocessor, TI DSP, or a waveform generator.
Headers J2 and P2 connect the control signals and data interface of a host
processor or waveform generator to the DAC EVM.
相關(guān)PDF資料
PDF描述
DAC6574EVM DAC6574 Evaluation Module(DAC6574評(píng)估模塊)
DAC7574EVM DAC7574 Evaluation Module(DAC7574評(píng)估模塊)
DAC5571EVM DAC5571 Evaluation Module(DAC5571評(píng)估模塊)
DAC6571EVM DAC6571 Evaluation Module(DAC6571評(píng)估模塊)
DAC7571EVM DAC7571 Evaluation Module(DAC7571評(píng)估模塊)
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