PM7543FSZ Analog Devices Inc, PM7543FSZ Datasheet - Page 13

• Manufacturer Part Number: PM7543FSZ
• Description: DAC 1-CH R-2R 12-Bit 16-Pin SOIC
• Manufacturer: Analog Devices Inc

Specifications of PM7543FSZ

• Package: 16SOIC
• Resolution: 12 Bit
• Architecture: R-2R
• Digital Interface Type: Serial
• Number Of Outputs Per Chip: 1
• Output Type: Current
• Full Scale Error: ±2 LSB
• Integral Nonlinearity Error: ±1 LSB
• Settling Time: 1µs
• Number Of Bits: 12
• Data Interface: Serial
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ANALOGDEVICES fAX-ON-DEMAND HOTLINE
0000
REV. D
The DACregistermustfirstbe
desired full-scale output.
and must air be of the same (preferably metal foil) type to assure
temperature coefficient match. Mismatching between AJ and A4causes
offset and full-scale errors while an A5 to A4 and R3 mismatch will
Calibration
until VOUT
R1 and RFEEOBACK may be omitted, with VREFadjusted to yield the
BIPOLAR OPERATION
Figure 9 details a suggested
tion. Table 3 shows the digital input to analog output relationship,
The circuit uses offset binary coding, Two's
be converted to offset binary by software inversion
the addition of an external inverter to the MSB input.
Resistors R , R4' and Rs must be selected to match within 0.0' %
result in full-scale error.
FIGURE 9: Bipolar Operation (4-Quadrant, Offset Binary)
FIGURE 8: Unipolar Operation with Fast Op Amp and Gain
ErrorTrimming(2-Quadrant)
CONTROL
INPUTS
and adjusting R1 until VOUT= OV. R, and R2 may be omitted by
SERI"L
'"POT
-10V
DAn
Vo.,
cu.
=
is performed
-V REF(4095/4096). Inthe case of an adjustable VREF'
R,
-=-
by loading the DAC register with
(4-aUADRANT)
V,N
3,AGNO
circuitfor bipolar, or offset binary opera-
loaded withall is. R1 is then adjusted
100"
R,
IS
8-11
-
Vo.,
COfjTROL
CONTROL
Page
complement code can
INPUTS
BITS
25
'.~
'SY
of the MSB or by
PM-7543
SYSTEM
RESH
FROM
,0000000
SERIAL
INPUT
DATA
I
VOUT
R,
-12-
COMMON
AH"LOG
where Ax assumes avalueof 1 for an "ON" bit and Oforan "OFF" bit
adjusted by loading the DAC register with 111' 11"
ANALOG/DIGITAL DIVISION
The transfer function for the PM-7543 connected in the multiplying
0 1 "
0000
0000
NOTES:
2.
adjusting the ratio of RJ to A4 to yield VOUT= OV. Full scale can be
ther adjusting the amplitude of V REF orthe value of As until the desired
VOUTis achieved.
mode
VO=-VIN
TABLE 3: Bipolar (Offset Binary) Code Table
MSB
1. Nomina!full scale for the circuits of Figure 9 is given by
1 1 1 1
, 000
1 a 0 a
Nominal LSB magnitude tOf !he circuits of Figure 9 is
FS
Lffi=VREF/~\.
~
as
DIGITAL INPUT
VRf,F
shown in Figures 7 and 8 is:
(;;
1
0000
0000
0000
0000
, , 1,
l'
2047
2048
\20481
+ ;.~ +;~ + "';i~)
)
1 1
20kQ
R.
000
0000
000'
, , 1
0 0 0 ,
1 1 1 1
R,
LSB
a
,
VOIlT
NOMINALANALOG
(VOUT8sshown in Figure
+ VREF
+ VREF
-V
-VREF
-V
given by
REF
REF
PM-7543
(?_Q1?_)
(}6::-)
0
(---1-)
(~~:})
(
2048
2048
~._
2048
, 111 and ei-
)
OUTPUT
9)