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DAC7632 데이터시트(PDF) 18 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) 18 Page - Burr-Brown (TI)

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DAC7632
18
SBAS234
www.ti.com
FIGURE 15. Digital Input and Output Timing.
DACSEL
(LSB)
SDI
CLK
CS
LOAD
X
D15
D1
D0
SDI
CLK
LDAC
RST
V
OUT
tcss
t
LD1
t
CL
t
CH
t
DS
t
DH
t
LD2
t
LDRW
t
S
t
RSTH
t
RSTL
t
RSSS
t
RSSH
t
CSH
t
S
±0.003% FSR
ERROR BAND
±0.003% FSR
ERROR BAND
RSTSEL
X
X
XX
X
QUICK
LOAD
(MSB)
t
LDDD
LDAC
t
LDDH
t
LDDL
t
SDO
SDO
DIGITAL TIMING
Figure 15 and Table III provide detailed timing for the digital
interface of the DAC7632.
DIGITAL INPUT CODING
The DAC7632 input data is in Straight Binary format. The
output voltage is given by Equation 1.
VV
L
VH
VL
N
OUT
REF
REF
REF
=+ (
)
–•
,
65 536
where N is the digital input code. This equation does not
include the effects of offset (zero-scale) or gain (full-scale)
errors.
DIGITALLY-PROGRAMMABLE CURRENT SOURCE
The DAC7632 offers a unique set of features that allows a
wide range of flexibility in designing application circuits such
as programmable current sources. The DAC7632 offers both
a differential reference input, as well as an open-loop con-
figuration around the output amplifier. The open-loop con-
figuration around the output amplifier allows a transistor to be
placed within the loop to implement a digitally-program-
mable, unidirectional current source. The availability of a
differential reference allows programmability for both the full-
scale and zero-scale currents. The output current is calcu-
lated as:
I
VH
VL
R
VL R
OUT
REF
REF
SENSE
REF
SENSE
=




+
(
)
–
•
,
/
N
65 536



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