參數(shù)資料
型號： MAX5195EGM
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： DAC
英文描述： 14-Bit, 260Msps High-Dynamic Performance DAC
中文描述： PARALLEL, WORD INPUT LOADING, 14-BIT DAC, QCC48
封裝： 7 X 7 MM, 0.90 MM HEIGHT, QFN-48
文件頁數(shù)： 13/17頁
文件大?。?/td> 599K
代理商： MAX5195EGM
swing of 1V
P-P
(0.5V
P-P
single ended) when applying a
full-scale current of 20mA.
Alternatively, an external unity-gain amplifier can be
used to buffer the outputs. This circuit works as an I-V
amplifier (Figure 7b), in which OUTP is held at AV
CC
by
the inverting terminal of the buffer amplifier. OUTN
should then be connected to AV
CC
to provide a DC-
current path for the current switched to OUTP. The
amplifier
’
s maximum output swing and the MAX5195
full-scale current determine the value of R
LOOP
. An
optional roll-off capacitor (C
LOOP
) in the feedback loop
helps to ease dV/dt requirements at the input of the
operational amplifier. It is recommended that the ampli-
fier
’
s power-supply rails be higher than the resistor
’
s
output reference voltage AV
CC
due to its positive and
negative output swing around AV
CC
.
M
14-Bit, 260Msps High-Dynamic
Performance DAC
______________________________________________________________________________________
13
D0
–
D13
AV
CC
, DV
CC
AGND, DGND
AV
CC
AV
CC
OUTP
OUTN
R
T
27.4
R
T
27.4
AGND
AGND
MAX5195
14
V
OUTP
V
OUTN
V
OUT_
= I
FS
×
R
LOAD
R
: RESISTOR COMBINATION OF
INTERNAL R2R NETWORK AND EXTERNAL
TERMINATION RESISTOR
Figure 7a. Single-Ended Unbuffered Output Configuration
D0
–
D13
AV
CC
, DV
CC
AGND, DGND
AV
CC
OUTP
OUTN
AGND
MAX5195
14
V
OUT
R
LOOP
C
LOOP
Figure 7b. Single-Ended Buffered Output Configuration
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