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DAC10GS Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer DAC10GS
Beschreibung 10-Bit High Speed Multiplying D/A Converter Universal Digital Logic Interface
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 10 Seiten
DAC10GS Datasheet, Funktion
a 10-Bit High Speed Multiplying D/A Converter
(Universal Digital Logic Interface)
DAC10*
FEATURES
Fast Settling: 85 ns
Low Full-Scale Drift: 10 ppm/؇C
Nonlinearity to 0.05% Max Over Temperature Range
Complementary Current Outputs: 0 mA to 4 mA␣
Wide Range Multiplying Capability: 1 MHz Bandwidth
Wide Power Supply Range: +5, –7.5 Min to ؎18 V Max
Direct Interface to TTL, CMOS, ECL, PMOS, NMOS
Availability in Die Form␣
GENERAL DESCRIPTION
The DAC10 series of 10-bit monolithic multiplying digital-to-
analog converters provide high speed performance and full-scale
accuracy.
Advanced circuit design achieves 85 ns settling times with very
low “glitch” energy and low power consumption. Direct inter-
face to all popular logic families with full noise immunity is
provided by the high swing, adjustable threshold logic inputs.
All DAC10 series models guarantee full 10-bit monotonicity,
and nonlinearities as tight as +0.05% over the entire operating
temperature range are available. Device performance is essen-
tially unchanged over the ± 18 V power supply range, with
85 mW power consumption attainable at lower supplies.
A highly stable, unique trim method is used, which selectively
shorts Zener diodes, to provide 1/2 LSB full-scale accuracy
without the need for laser trimming.
Single-chip reliability, coupled with low cost and outstanding
flexibility, make the DAC10 device an ideal building block for
A/D converters, Data Acquisition systems, CRT displays, pro-
grammable test equipment and other applications where low
power consumption, input/output versatility and long-term
stability are required.
VREF (+)
16
VREF (–)
17
V+
15
VLC
1
SIMPLIFIED SCHEMATIC
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
5 6 7 8 9 10 11 12 13 14
BIAS NETWORK
CURRENT SWITCHES
REFERENCE
AMPLIFIER
4
IOUT
2 IOUT
18
COMP
3
V–
*Protected by Patent Nos. 4,055,770, 4,056,740 and 4,092,639.
REV. D
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1998






DAC10GS Datasheet, Funktion
DAC10
–VREF
RREF 16
R17 17
DAC10
4
IO
2 IO
IFS
–VREF
RREF
؋
2
NOTE: RREF SETS IFS; R17 IS FOR BIAS
CURRENT CANCELLATION
Figure 9. Basic Negative Reference Operation
VREF
+10V
LOW T.C.
4.5k
39k
16
IREF(+) 2mA
10k
POT
1V 17
APPROXIMATELY
5k
DAC10
Figure 10. Recommended Full-Scale Adjustment Circuit
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
EO
IREF = 16
2.000mA
DAC10
IO 4 1.25k
1.25k
IO 2
EO
FULL RANGE
HALF-SCALE +LSB
HALF-SCALE
HALF-SCALE –LSB
HALF-SCALE +LSB
ZERO SCALE +LSB
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
1 111 1 1 1 111
1 000 0 0 0 001
1 000 0 0 0 000
0 111 1 1 1 111
0 000 0 0 0 001
0 000 0 0 0 000
IOmA
3.996
2.004
2.000
1.996
0.004
0.000
IOmA
0.000
1.992
1.996
2.000
3.992
3.996
EO
–4.995
–2.505
–2.500
–2.495
–0.005
0.000
EO
–0.000
–2.490
–2.495
–2.500
–4.990
–4.995
Figure 11. Basic Unipolar Negative Operation
MSB
LSB
+5V
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
IREF (+) = 16
2.000mA
DAC10
IO 4 EO
IO 2
EO
2.5k
2.5k
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
POSITIVE FULL RANGE
1 111 11 1 1 11
POSITIVE FULL RANGE –LSB 1 1 1 1 1 1 1 1 1 0
ZERO-SCALE +LSB
1 000 00 0 0 01
ZERO-SCALE
1 000 00 0 0 00
ZERO-SCALE –LSB
1 111 11 1 1 11
NEGATIVE FULL-SCALE +LSB 0 0 0 0 0 0 0 0 0 1
NEGATIVE FULL-SCALE
0 000 00 0 0 00
EO
–4.990
–4.980
–0.010
0.000
+0.010
+4.990
+5.000
EO
+5.000
+4.990
+0.020
+0.010
0.000
–4.980
–4.990
Figure 12. Basic Bipolar Output Operation
+15V
2
VIN
VO 6
REF01
5k
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
5.000
k
5k
DAC10
CC
IO 4
VLC IO 2
GND
4
V+ V–
2.5k
+15V
–15V
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
POSITIVE FULL RANGE
1 1 11 1 11 1 11
EO ZERO-SCALE
1 0 00 0 00 0 00
NEGATIVE FULL-SCALE +LSB 0 0 0 0 0 0 0 0 0 1
NEGATIVE FULL-SCALE
0 0 00 0 00 0 00
EO
+4.990
0.00
–4.990
–5.000
Figure 13. Offset Binary Operation
–6– REV. D

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