參數(shù)資料
型號(hào): MAX532AEWE
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: DAC
英文描述: Circular Connector; No. of Contacts:18; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-18 RoHS Compliant: No
中文描述: DUAL, SERIAL INPUT LOADING, 2.5 us SETTLING TIME, 12-BIT DAC, PDSO16
封裝: 0.300 INCH, PLASTIC, SO-16
文件頁(yè)數(shù): 11/16頁(yè)
文件大?。?/td> 162K
代理商: MAX532AEWE
With the values of t
RC
given in Table 1, t
CSS0
is always
given by t
DV
+ t
DS
. For different values of R or C, t
RC
must be calculated to determine t
CSS0
.
Additionally, the maximum clock frequency is limited to
1
f
CLK
(max) = ————————————— .
2 x (t
DO
+ t
RC
-15ns + t
DS
)
For example, with t
RC
= 15ns (5V ±10% supply with
1k
pull-up), the maximum clock frequency is 2MHz.
Digital-to-Analog S ec tion
Figure 8 shows a simplified circuit diagram for one of
the DACs and the output amplifier.
A segmented scheme is used to improve linearity,
whereby the two MSBs of the 12-bit data word are
decoded to drive the three switches, SA, SB, and SC.
The remaining ten bits drive the switches S0 through S9
in a standard R-2R ladder configuration.
Each of the switches, SA, SB, and SC, steers 1/4 of the
total reference current with the remaining 1/4 passing
through the R-2R section.
The output amplifier and feedback resistor perform the
current-to-voltage conversion, giving the following:
VOUT_ = -D x VREF_,
where _ denotes A or B, and D is the fractional representa-
tion of the digital word. (D can be set from 0 to 4095/4096.)
M
Dual, S erial-Input,
Voltage-Output, 12-Bit MDAC
______________________________________________________________________________________
11
V
PULL-UP
(V)
4.5
4.5
4.5
4.5
4.5
11.4
11.4
11.4
11.4
11.4
13.5
13.5
13.5
13.5
13.5
C (pF)
20
35
50
100
150
20
35
50
100
150
20
35
50
100
150
R
P
(k
)
1
1
1
1
1
3
3
3
3
3
3
3
3
3
3
t
RC
(ns)
15
27
38
76
114
14
25
35
71
106
12
21
29
59
88
Table 1. t
RC
Delay Times
R
R
R
2R
2R
2R
2R
2R
2R
2R
SC
SB
SA
S9
S8
S0
R/2
RFB_
VOUT_
AGND_
SHOWN FOR ALL 1s ON DAC
VREF_
Figure 8. Simplified D/A Circuit Diagram
DACA
AGNDA
V
SS
DGND
RFBA
VOUTA
V
OUT
V
IN
-12V to -15V
V
DD
VREFA
+12V to +15V
MAX532
Figure 9. Unipolar Binary Operation
相關(guān)PDF資料
PDF描述
MAX532BCPE Dual, Serial-Input, Voltage-Output, 12-Bit MDAC
MAX532BCWE Dual, Serial-Input, Voltage-Output, 12-Bit MDAC
MAX532ACWE Dual, Serial-Input, Voltage-Output, 12-Bit MDAC
MAX532AEPE Single Universal Serial Bus Port Transient Suppressor 6-SOT-23 -40 to 85
MAX532AMJE Single Universal Serial Bus Port Transient Suppressor 6-SOT-23 -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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