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DAC0800LJ Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer DAC0800LJ
Beschreibung 8-Bit Digital-to-Analog Converters
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 11 Seiten
DAC0800LJ Datasheet, Funktion
June 1999
DAC0800/DAC0802
8-Bit Digital-to-Analog Converters
General Description
The DAC0800 series are monolithic 8-bit high-speed
current-output digital-to-analog converters (DAC) featuring
typical settling times of 100 ns. When used as a multiplying
DAC, monotonic performance over a 40 to 1 reference cur-
rent range is possible. The DAC0800 series also features
high compliance complementary current outputs to allow dif-
ferential output voltages of 20 Vp-p with simple resistor loads
as shown in Figure 1. The reference-to-full-scale current
matching of better than ±1 LSB eliminates the need for
full-scale trims in most applications while the nonlinearities
of better than ±0.1% over temperature minimizes system er-
ror accumulations.
The noise immune inputs of the DAC0800 series will accept
TTL levels with the logic threshold pin, VLC, grounded.
Changing the VLC potential will allow direct interface to other
logic families. The performance and characteristics of the
device are essentially unchanged over the full ±4.5V to
±18V power supply range; power dissipation is only 33 mW
with ±5V supplies and is independent of the logic input
states.
The DAC0800, DAC0802, DAC0800C and DAC0802C are a
direct replacement for the DAC-08, DAC-08A, DAC-08C,
and DAC-08H, respectively.
Features
n Fast settling output current: 100 ns
n Full scale error: ±1 LSB
n Nonlinearity over temperature: ±0.1%
n Full scale current drift: ±10 ppm/˚C
n High output compliance: −10V to +18V
n Complementary current outputs
n Interface directly with TTL, CMOS, PMOS and others
n 2 quadrant wide range multiplying capability
n Wide power supply range: ±4.5V to ±18V
n Low power consumption: 33 mW at ±5V
n Low cost
Typical Applications
DS005686-1
FIGURE 1. ±20 VP-P Output Digital-to-Analog Converter (Note 5)
Ordering Information
Non-Linearity
Temperature
Order Numbers
Range
J Package (J16A) (Note 1) N Package (N16E) (Note 1) SO Package (M16A)
±0.1% FS
±0.19% FS
±0.19% FS
0˚C TA +70˚C
−55˚C TA +125˚C
0˚C TA +70˚C
DAC0802LCJ
DAC0800LJ
DAC0800LCJ
DAC-08HQ DAC0802LCN
DAC-08Q
DAC-08EQ DAC0800LCN
DAC-08HP
DAC-08EP
DAC0802LCM
DAC0800LCM
Note 1: Devices may be ordered by using either order number.
© 1999 National Semiconductor Corporation DS005686
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DAC0800LJ Datasheet, Funktion
Typical Applications
DS005686-5
IO + IO = IFS for all logic states
For fixed reference, TTL operation, typical values are:
VREF = 10.000V
RREF = 5.000k
R15 RREF
CC = 0.01 µF
VLC = 0V (Ground)
FIGURE 3. Basic Positive Reference Operation (Note 5)
DS005686-21
FIGURE 4. Recommended Full Scale Adjustment
Circuit (Note 5)
DS005686-16
Note. RREF sets IFS; R15 is for bias current cancellation
FIGURE 5. Basic Negative Reference Operation
(Note 5)
DS005686-17
Full Scale
Full Scale−LSB
Half Scale+LSB
Half Scale
Half Scale−LSB
Zero Scale+LSB
Zero Scale
B1 B2 B3 B4 B5 B6 B7 B8
11111111
11111110
10000001
10000000
01111111
00000001
00000000
IO mA
1.992
1.984
1.008
1.000
0.992
0.008
0.000
IOmA
0.000
0.008
0.984
0.992
1.000
1.984
1.992
EO
−9.960
−9.920
−5.040
−5.000
−4.960
−0.040
0.000
FIGURE 6. Basic Unipolar Negative Operation (Note 5)
EO
0.000
−0.040
−4.920
−4.960
−5.000
−9.920
−9.960
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