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DAC7632 데이터시트(PDF) 19 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
부품명 DAC7632
상세설명  16-Bit, Dual Voltage Output DIGITAL-TO-ANALOG CONVERTER
PDF  21 Pages
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제조업체  BURR-BROWN [Burr-Brown (TI)]
홈페이지  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

DAC7632 데이터시트(HTML) 19 Page - Burr-Brown (TI)

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DAC7632
19
SBAS234
www.ti.com
SYMBOL
DESCRIPTION
MIN
MAX
UNITS
tDS
Data Valid to CLK Rising
10
ns
tDH
Data Held Valid after CLK Rises
20
ns
tCH
CLK HIGH
25
ns
tCL
CLK LOW
25
ns
tCSS
CS LOW to CLK Rising
15
ns
tCSH
CLK HIGH to CS Rising
0
ns
tLD1
LOAD HIGH to CLK Rising
10
ns
tLD2
CLK Rising to LOAD LOW
30
ns
tLDRW
LOAD LOW Time
30
ns
tLDDL
LDAC LOW Time
100
ns
tLDDH
LDAC HIGH Time
100
ns
tLDDD
LOAD LOW to LDAC Rising
40
ns
tRSSS
RESETSEL Valid to RESET HIGH
0
ns
tRSSH
RESET HIGH to RESETSEL Not Valid
100
ns
tRSTL
RESET LOW Time
10
ns
tRSTH
RESET HIGH Time
10
ns
tSDO
SDO Propogation Delay
10
30
ns
tS
Settling Time
10
µs
TABLE III. Timing Specifications (TA = –40°C to +85°C).
FIGURE 16. 4-20mA Digitally-Controlled Current Source.
V
OUTA
V
OUTA Sense
V
REFL Sense
V
REFL
V
REFH
V
REFH Sense
V
OUTB Sense
V
OUTB
32
31
30
29
28
27
26
25
DAC7632
1000pF
I
OUT
100
Ω
+2.5V
20k
Ω
80k
Ω
+V
+V
OPA2350
100
Ω
2200pF
1000pF
2200pF
V
PROGRAMMED
125
Ω
I
OUT
V
PROGRAMMED
125
Ω
Figure 16 shows a DAC7632 in a 4-20mA current output
configuration. The output current can be determined by
Equation 3:
I
VV
N
V
OUT =


• 




+ 


25
05
125
65 536
05
125
.
– .
,
.
ΩΩ
At full-scale, the output current is 16mA, plus the 4mA, for the
zero current. At zero scale the output current is the offset
current of 4mA (0.5V/125
Ω).



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