DAC14QM_15 Datasheet, PDF (3/6 Pages) Analog Devices – HIGH RESOLUTION DIGITAL TO ANALOG CONVERTER

INSTALLATION
The following installation guidelines are offered to help mini-
mize the potential causes of error discussed previously:
1. Locate the unit and the wiring to its connector so as to
provide optimum isolation from sources of RFI and EMI.
2. Attempt to locate the unit and its connector in a plane of
thermal equipotential. It must be appreciated that popular
electronic wiring materials usually involve different metals,
and the junctions will act as thermocouples if they are
located in regions of differing temperature.
3. It is important to connect the +5V logic supply common
(usually a carrier of pulse noise) to the analog supply
common at a point that minimizes system noise.
4. When using the DAC-QG, the user must properly connect
the four-terminal output amplifier to allow inherent cir-
cuit compensation for contact resistance.
1.0
II
I
II
1.0
.J.
vi
u: 0.1
*
V^IOL^IJT^.A^I GE OUT^.lPU¹T
1'\ STEP' 1%FS
I -Ll
VOLTAGE
SOTUETPP=^UF^TS
\
i\
0...
*
0.1I
--' 48Kwl
\yTO[
j 184L
doglito'
ILl
IC AMP
D-QI
/.
I
>U-
a^<_=uu^{:_{> 0.01}
<{
--'CURRENT
\?SUTTEPPUTFS 1\
\
\
f- Ci\
STEP' 1%FS
O^{I II}
1\
'\
, _0.001 ^I I I
\
1\
B^10-7
10-6
1O~5
10-4
TIME - see
S _{Figure 1. DAC-14/160M Settling Time}
1O~3
O _1.0
L _I
t1 ^ET _en
E ^{*... 0.1I}
,
I
>-
U
<{
a:
=>
u
~ 0.01
48Kw/o
degl;tcho,
"R
0.001
1077
-
10-6
\
\
10-5
TIME - see
I
10-4
10-3
Figure 2a. Settling Time DAC-160G, Step +FS to tFS
10'
+20
~ 100
"0
>
I
~ 10-'
=>
-0 _e>_n
C
I
UJ
-20 C
=>
I
>-
U<{
a:
=>
u
~ 0.01
48K w/o
deghtehe,
"R
184Lwl deghtch.,
0' IC AMP
w/o degl;tch.,
yo:
I
....
-'
~ 10-2
<{
UenJ
0 10-3
Z
-^!:'^:
"-
-40 ::;;
<{
UJ
en
~ -60
".
A
184Lw/o
""
<{
UJ
""
<{
UJ
"-
de4g8hKtcwh.,1 \/iitTi
';; 10-4
-80 +1
0.001
-
I' In I
10-7
10-6
10-5
10-4
10-3
TIME - see
10-5 -
1
lk
BANDWIDTH
10k
- Hz
-100
1M
Figure 2b. Settling Time DAC-160G, Step ~ 1% FS
-
103
102 ^I
E
.<;
,,I
0
~~
10'
I
U
Z
<{
0
UJ 100
"-
::;;
....
=>
"- 10-'
....
=>
0
10-2
~
,;"
10-3 ^,./I~
II
0.01
0.1.
III Jv.~~V1 v
,,~<?j.- ":P'
Y _,;"/
1/
7
/
1/ ,<$
V
,>'b~
I
...,j;I
I I II I I
II
I
10
100
lk
10k
FREQUENCY- Hz
Figure 3. DAC-160G, -H'eak Noise vs. Bandwidth
10.0
u
:;
E
I
I
....
1.0 I
~
0
a:
<;)
.....
UJ
en
0
-- - - ^---
-ro' ^{-- o.143x35°C=.SmV}
Z
'"
0.1 I
<{
UJ
"-
.Â¥
I
'0ti
S!
I_u!,
'"
"'
r\
0.01
1
10
100
1K
10K
VALUE OF C8 - pF
C8 IS Cf IN FIG. 3
Figure 4. Output Impedance vs. Frequency
Figure 5. -H'eakNoise Growth per °c vs. Value of CB (cf)
when using Deglitcher
D/A CONVERTERS 369