參數(shù)資料
型號: AD7834SQ
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: LC2MOS Quad 14-Bit DAC
中文描述: QUAD, SERIAL INPUT LOADING, 14-BIT DAC, CDIP28
封裝: 0.600 INCH, CERDIP-28
文件頁數(shù): 3/16頁
文件大?。?/td> 404K
代理商: AD7834SQ
AD7834/AD7835
REV. A
–3–
TIMING SPECIFICATIONS
1
Parameter
Limit at T
MIN,
T
MAX
Units
Description
AD7834 Specific
t
12
t
22
100
50
60
66
30
30
40
30
10
0
40
20
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
SCLK Cycle Time
SCLK Low Time @ +25
°
C
SCLK Low Time –40
°
C to +85
°
C
SCLK Low Time –55
°
C to +125
°
C
SCLK High Time
FSYNC
,
PAEN
Setup Time
FSYNC
,
PAEN
Hold Time
Data Setup Time
Data Hold Time
LDAC
to
FSYNC
Setup Time
LDAC
to
FSYNC
Hold Time
Delay Between Write Operations
t
32
t
4
t
5
t
6
t
7
t
8
t
9
t
21
AD7835 Specific
t
11
t
12
t
13
t
14
t
15
t
16
t
17
t
18
t
19
t
20
General
t
10
15
15
0
0
40
40
10
0
0
0
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
A0, A1, A2,
BYSHF
to
CS
Setup Time
A0, A1, A2,
BYSHF
to
CS
Hold Time
CS
to
WR
Setup Time
CS
to
WR
Hold Time
WR
Pulse Width
Data Setup Time
Data Hold Time
LDAC
to
CS
Setup Time
CS
to
LDAC
Setup Time
LDAC
to
CS
Hold Time
40
ns min
LDAC
,
CLR
Pulse Width
NOTES
1
All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.
2
Rise and fall times should be no longer than 50 ns.
Specifications subject to change without notice.
(V
CC
= +5 V
±
5%; V
DD
= +15 V
±
5%; V
SS
= –15 V
±
5%; AGND = DGND = 0 V)
t
12
t
14
t
17
t
16
t
15
t
10
t
18
t
19
t
11
t
13
A0. A1 A2
BYSHF
CS
WR
DATA
LDAC
(SIMULTANEOUS
UPDATE)
LDAC
(PRE-CHANNEL
UPDATE)
Figure 2. AD7835 Timing Diagram
t
1
t
3
t
10
t
20
t
9
t
4
LDAC
(SIMULTANEOUS
UPDATE)
LDAC
(PRE-CHANNEL
UPDATE)
1ST
CLK
2ND
CLK
24TH
CLK
t
5
t
8
t
2
D0
D1
t
7
t
6
D22
D23
SCLK
DIN
FSYNC
Figure 1. AD7834 Timing Diagram
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