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DAC0808LCM Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer DAC0808LCM
Beschreibung 8-Bit D/A Converter
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 11 Seiten
DAC0808LCM Datasheet, Funktion
January 1995
DAC0808 DAC0807 DAC0806 8-Bit D A Converters
General Description
The DAC0808 series is an 8-bit monolithic digital-to-analog
converter (DAC) featuring a full scale output current settling
time of 150 ns while dissipating only 33 mW with g5V sup-
plies No reference current (IREF) trimming is required for
most applications since the full scale output current is typi-
cally g1 LSB of 255 IREF 256 Relative accuracies of bet-
ter than g0 19% assure 8-bit monotonicity and linearity
while zero level output current of less than 4 mA provides
8-bit zero accuracy for IREFt2 mA The power supply cur-
rents of the DAC0808 series are independent of bit codes
and exhibits essentially constant device characteristics over
the entire supply voltage range
The DAC0808 will interface directly with popular TTL DTL
or CMOS logic levels and is a direct replacement for the
MC1508 MC1408 For higher speed applications see
DAC0800 data sheet
Features
Y Relative accuracy g0 19% error maximum (DAC0808)
Y Full scale current match g1 LSB typ
Y 7 and 6-bit accuracy available (DAC0807 DAC0806)
Y Fast settling time 150 ns typ
Y Noninverting digital inputs are TTL and CMOS compati-
ble
Y High speed multiplying input slew rate 8 mA ms
Y Power supply voltage range g4 5V to g18V
Y Low power consumption 33 mW g5V
Block and Connection Diagrams
Dual-In-Line Package
Order Number
DAC0808 DAC0807
or DAC0806
See NS Package
Number J16A
M16A or N16A
TL H 5687 – 1
Small-Outline Package
TL H 5687 – 2
Ordering Information
Top View
TL H 5687 – 13
ACCURACY OPERATING TEMPERATURE
RANGE
J PACKAGE (J16A)
ORDER NUMBERS
N PACKAGE (N16A)
SO PACKAGE (M16A)
DAC0808LCN MC1408P8
7-bit
6-bit
0 CsTAsa75 C
0 CsTAsa75 C
DAC0807LCJ MC1408L7 DAC0807LCN MC1408P7
DAC0806LCJ MC1408L6 DAC0806LCN MC1408P6
Note Devices may be ordered by using either order number
DAC0808LCM
DAC0807LCM
DAC0806LCM
C1995 National Semiconductor Corporation TL H 5687
RRD-B30M115 Printed in U S A






DAC0808LCM Datasheet, Funktion
Test Circuits
VI and I1 apply to inputs A1 – A8
The resistor tied to pin 15 is to temperature compensate the
bias current and may not be necessary for all applications
 JA1 A2 A3 A4 A5 A6 A7 A8
IO e K
a a aa a a a
2 4 8 16 32 64 128 256
where K j VREF
R14
and AN e ‘‘1’’ if AN is at high level
AN e ‘‘0’’ if AN is at low level
TL H 5687–6
FIGURE 3 Notation Definitions Test Circuit (Note 7)
FIGURE 4 Relative Accuracy Test Circuit (Note 7)
TL H 5687 – 7
FIGURE 5 Transient Response and Settling Time (Note 7)
6
TL H 5687 – 8

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SeitenGesamt 11 Seiten
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TeilenummerBeschreibungHersteller
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