|
|
PDF HI-DAC85V Data sheet ( Hoja de datos )
| Número de pieza | HI-DAC85V | |
| Descripción | Monolithic D/A Converter | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de HI-DAC85V (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
|
No Preview Available !
HI-DAC80V,
HI-DAC85V
August 1997
12-Bit, Low Cost, Monolithic D/A Converters
Features
Description
• DAC 80V/DAC 85V Alternative Source
• Monolithic Construction
• Fast Settling Time (Typ) . . . . . . . . . . . . . . . . . . . . 1.5µs
• Guaranteed Monotonicity
• Wafer Laser Trimmed Linearity, Gain, Offset
• Span Resistors On-Chip
• On-Board Reference
• Supply Operation . . . . . . . . . . . . . . . . . . . . . . . . . . ±12V
Applications
• High Speed A/D Converters
• Precision Instrumentation
• CRT Display Generation
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HI3-DAC80V-5
0 to 75 24 Ld PDIP
HI3-DAC85V-4
-25 to 85 24 Ld PDIP
PKG.
NO.
E24.6
E24.6
The Hl-DAC80V is a monolithic direct replacement for the
popular DAC80 and AD DAC80. The HI-DAC85V is a mono-
lithic direct replacement for the popular DAC85 and AD
DAC85 as well as the HI-5685V. Single chip construction
along with several design innovations make the Hl-DAC80V
the optimum choice for low cost, high reliability applications.
Intersil’ unique Dielectric Isolation (Dl) processing reduces
internal parasitics resulting in fast switching times and mini-
mum glitch. On board span resistors are provided for good
tracking over temperature, and are laser trimmed to high
accuracy.
Internally the Hl-DAC80V/HI-DAC85V eliminates code
dependent ground currents by routing current from the posi-
tive supply to the internal ground node, as determined by an
auxiliary R2R ladder. This results in a cancellation of code
dependent ground currents allowing virtually zero variation
in current through the package common, pin 21.
The Hl-DAC80V is available as a voltage output device which
is guaranteed over the 0oC to 75oC temperature range. The
HI-DAC85V is available as a voltage output device which is
guaranteed over the -25oC to 85oC temperature range. It
includes a buried zener reference featuring a low temperature
coefficient as well as an on board operational amplifier. The
Hl-DAC80V requires only two power supplies and will operate
in the range of ± (11.4V to 16.5V).
Pinout
HI-DAC80V/HI-DAC85V
(PDIP)
TOP VIEW
(MSB) BIT 1 1
BIT 2 2
BIT 3 3
BIT 4 4
BIT 5 5
BIT 6 6
BIT 7 7
BIT 8 8
BIT 9 9
BIT 10 10
BIT 11 11
(LSB) BIT 12 12
24 6.3V REF OUT
23 GAIN ADJUST
22 +VS
21 COMMON
20 ∑ JUNCTION
19 20V RANGE
18 10V RANGE
17 BIPOLAR OFFSET
16 REF INPUT
15 VOUT
14 -VS
13 NC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
10-1034
File Number 3110.1
1 page  
HI-DAC80V, HI-DAC85V
Thermal Drift
Thermal drift is based on measurements at 25oC, at high
f(oTrHt)haenhdiglohw(T(THL-)2t5eomCp)earantdurleosw.
Drift calculations are made
(25oC-TL) ranges, and the
larger of the two values is given as a specification represent-
ing worst case drift.
Gain Drift, Offset Drift, Reference Drift and Total Bipolar Drift
are calculated in parts per million per oC as follows:
GainDrift = ∆-----F----S-F---R-S-----R⁄---∆----°---C-- × 106
values within the specified operating range. Gain and offset
errors must be calibrated to zero at 25oC. Then the specified
limits for Total Error apply for any input code and for any
temperature within the specified operating range.
Power Supply Sensitivity
Power Supply Sensitivity is a measure of the change in gain
and offset of the D/A converter resulting from a change in
-VS, or +VS supplies. It is specified under DC conditions and
expressed as full scale range percent of change divided by
power supply percent change.
OffsetDrift = ∆-----O-----f--f-F-s---S-e---t-R---⁄--∆----°---C--- × 106
ReferenceDrift = ∆----V-----R----VE----RF----E-⁄--(-F--∆----°---C-----) × 106
To talBipolarDrift = ∆----V-----O-F-----⁄S--(--R∆-----°--C------) × 106
NOTE: FSR = Full Scale Output Voltage - Zero Scale Output
Voltage
o∆rFFSSRR=(F25SoRC()T-HF)S-RFS(TRL)(.25oC),
VO = Steady State response to any input code.
Total Bipolar Drift is the variation of output voltage with
temperature, in the bipolar mode of operation. It represents
the net effect of drift in Gain, Offset, Linearity and Reference
Voltage. Total Bipolar Drift values are calculated, based on
measurements as explained above. Gain and Offset need
not be calibrated to zero at 25oC. The specified limits for
TBD apply for any input code and for any power supply set-
ting within the specified operating range.
Accuracy
PSS = -∆---------F------u--------l--Fl----S----SV-------c---∆---R-S----a---V-----(--(--l--N---e-SN---------o-R----o-×---m------a-m----1----i---n--n-0---i------nga0---------l-a-e---)-----l--×--)--------1-------0-------0----
Glitch
A glitch on the output of a D/A converter is a transient spike
resulting from unequal internal ON-OFF switching times.
Worst case glitches usually occur at half-scale, i.e., the
major carry code transition from 011...1 to 100...0 or vice
versa. For example, if turn ON is greater than OFF for
011...1 to 100...0, an intermediate state of 000...0 exists,
such that, the output momentarily glitches toward zero out-
put. Matched switching times and fast switching will reduce
glitches considerably. (Measured as one half the Product of
duration and amplitude.)
Decoupling and Grounding
For best accuracy and high frequency performance, the
grounding and decoupling scheme shown in Figure 1 should
be used. Decoupling capacitors should be connected close
to the HI-DAC80V/HI-DAC85V (preferably to the device pins)
and should be tantalum or electrolytic bypassed with
ceramic types for best high frequency noise rejection.
Linearity Error (Short for “Integral Linearity Error.” Also,
sometimes called “Integral Nonlinearity” and “Nonlinearity”.)
The maximum deviation of the actual transfer characteristic
from an ideal straight line. The ideal line is positioned
according to end-point linearity for D/A converter products
from Intersil Corporation , i.e., the line is drawn between the
end-points of the actual transfer characteristic (codes 00...0
and 11...1).
Differential Linearity Error The difference between one
LSB and the output voltage change corresponding to any
two consecutive codes. A Differential Nonlinearity of ±1 LSB
or less guarantees monotonicity.
Monotonicity The property of a D/A converter’s transfer
function which guarantees that the output derivative will not
change sign in response to a sequence of increasing (or
decreasing) input codes. That is, the only output response to
a code change is to remain constant, increase for Increasing
code, or decrease for decreasing code.
-VS
0.01µF
1µF
0.01µF
+VS
1µF
14 21 22
24
16 -
+
18
19
20
15
Total Error The net output error resulting from all internal
effects (primarily non-ideal Gain, Offset, Linearity and
Reference Voltage). Supply voltages may be set to any
FIGURE 1.
10-1038
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet HI-DAC85V.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HI-DAC85V | Monolithic D/A Converter | Intersil Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |