DAC8043A Analog Devices, DAC8043A Datasheet - Page 8

• Manufacturer Part Number: DAC8043A
• Description: 12-Bit Current-Out DAC in TSSOP-8 Package
• Manufacturer: Analog Devices

Specifications of DAC8043A

• Resolution (bits): 12bit
• Dac Update Rate: 4MSPS
• Dac Settling Time: 250ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Ser

DAC8043A
reference, the DAC output will provide a proportional dc voltage
output according to the transfer equation:
where D is the decimal data loaded into the DAC register and
V
BIPOLAR 4-QUADRANT MULTIPLYING
Figure 20 shows a suggested circuit to achieve 4-quadrant mul-
tiplying operation. The summing amplifier multiplies V
2, and offsets the output with the reference voltage so that a
midscale digital input code of 2048 places V
The negative full-scale voltage will be V
loaded with all zeros. The positive full-scale output will be
REF
10V
is the externally applied reference voltage source.
P
Figure 19. Unipolar (2-Quadrant) Operation
V
V
AC
8-Lead Plastic Dual In-Line Package [PDIP]
REF
Dimensions shown in inches and (millimeters).
DIGITAL INPUTS OMITTED FOR CLARITY
2R
R
V
OUT
V
DD
2R
= –D/4096 × V
R
FB
(N-8)
R
GND
FB
10pF
I
OUT
REF
REF
when the DAC is
OUT2
OP77
at zero volts.
OUTLINE DIMENSIONS
OUT1
V
OUT
by
–8–
–(V
the digital coding is offset binary. The voltage output transfer
equation for various input data and reference (or signal) values
follows:
where D is the decimal data loaded into the DAC register and
V
Precision resistors will be necessary to avoid ratio errors. Other-
wise trimming will be required to achieve full accuracy specifica-
tions available from the DAC8043A device. See the various
Analog Devices Digital Potentiometer products for automated
trimming solutions (e.g., the AD5204 for low voltage applica-
tions or the AD7376 for high voltage applications).
REF
10V
DIGITAL INPUTS OMITTED FOR CLARITY
REF
P
8-Lead Thin Shrink Small Outline Package [TSSOP]
V
is the externally applied reference voltage source.
AC
V
8-Lead Standard Small Outline Package [SOIC_N]
– 1 LSB) when the DAC is loaded with all ones. Thus
REF
Figure 20. Bipolar (4-Quadrant) Operation
Dimensions shown in millimeters and (inches).
2R
R
Dimensions shown in millimeters.
V
OUT2
V
DD
2R
= (D/2048 – 1) × –V
R
FB
R
GND
(RU-8)
FB
S-Suffix
I
OUT
(R-8)
10pF
(0V TO –V
OP213
20k
V
REF
OUT1
10k
REF
)
OP213
20k
REV. B
V
OUT2