National Semiconductor DAC0808 Technical data
DAC0808
8-Bit D/A Converter
DAC0808 8-Bit D/A Converter
May 1999
General Description
The DAC0808 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
No reference current (I
applications since the full scale output current is typically
LSB of 255 I
±
0.19% assure 8-bit monotonicity and linearity while zero
level output current of less than 4 µA provides 8-bit zero
accuracy for I
DAC0808 is independent of bit codes, and exhibits essentially constant device characteristics over the entire supply
voltage range.
The DAC0808 will interface directly with popular TTL, DTLor
CMOS logic levels, and is a direct replacement for the
MC1508/MC1408. For higher speed applications, see
DAC0800 data sheet.
/256. Relative accuracies of better than
REF
≥2 mA. The power supply currents of the
REF
) trimming is required for most
REF
±
5V supplies.
±
Block and Connection Diagrams
Features
n Relative accuracy:±0.19% error maximum
n Full scale current match:
n Fast settling time: 150 ns typ
n Noninverting digital inputs are TTL and CMOS
1
compatible
n High speed multiplying input slew rate: 8 mA/µs
n Power supply voltage range:
n Low power consumption: 33 mW
±
1 LSB typ
±
4.5V to±18V
@
±
5V
DS005687-1
Dual-In-Line Package
DS005687-2
Top View
Order Number DAC0808
See NS Package M16A or N16A
© 2001 National Semiconductor Corporation DS005687 www.national.com
Block and Connection Diagrams (Continued)
DAC0808
Ordering Information
ACCURACY OPERATING
TEMPERATURE RANGE N PACKAGE (N16A)
8-bit 0˚C≤T
Note 1: Devices may be ordered by using either order number.
≤+75˚C DAC0808LCN MC1408P8 DAC0808LCM
A
Small-Outline Package
DS005687-13
(Note 1)
SO PACKAGE
(M16A)
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DAC0808
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Supply Voltage
V
CC
V
EE
Digital Input Voltage, V5–V12 −10 VDCto +18 V
Applied Output Voltage, V
Reference Current, I
14
O
−11 VDCto +18 V
Reference Amplifier Inputs, V14, V15 V
+18 V
−18 V
5mA
CC,VEE
DC
DC
DC
DC
Storage Temperature Range −65˚C to +150˚C
Lead Temp. (Soldering, 10 seconds)
Dual-In-Line Package (Plastic) 260˚C
Dual-In-Line Package (Ceramic) 300˚C
Surface Mount Package
Vapor Phase (60 seconds) 215˚C
Infrared (15 seconds) 220˚C
Operating Ratings
Temperature Range T
DAC0808 0 ≤TA≤ +75˚C
MIN
≤ TA≤ T
Power Dissipation (Note 4) 1000 mW
ESD Susceptibility (Note 5) TBD
Electrical Characteristics
(VCC= 5V, VEE= −15 VDC,V
Symbol Parameter Conditions Min Typ Max Units
E
r
Relative Accuracy (Error Relative (
to Full Scale I
DAC0808LC (LM1408-8)
Settling Time to Within
t
PLH,tPHL
TCI
O
(Includes t
Propagation Delay Time TA= 25˚C, (
Output Full Scale Current Drift
PLH
MSB Digital Input Logic Levels (
V
IH
V
IL
High Level, Logic “1” 2 V
Low Level, Logic “0” 0.8 V
MSB Digital Input Current (
High Level V
Low Level V
I
15
Reference Input Bias Current (
Output Current Range (
I
O
Output Current V
Output Current, All Bits Low (
Output Voltage Compliance (Note 3) E
V
=−5V, I
EE
REF
VEEBelow −10V −5.0, +0.4 V
SRI
REF
Reference Current Slew Rate (
Output Current Power Supply −5V ≤ V
Sensitivity
Power Supply Current (All Bits (
Low)
I
CC
I
EE
Power Supply Voltage Range T
V
CC
V
EE
Power Dissipation
/R14 = 2 mA, and all digital inputs at high logic level unless otherwise noted.)
REF
Figure 4
)
O
1
⁄2LSB TA=25˚C (Note 7), 150 ns
)(
Figure 5
Figure 3
Figure 3
Figure 3
Figure 3
V
V
)%
±
0.19 %
)
Figure 5
) 30 100 ns
±
20 ppm/˚C
)
)
= 5V 0 0.040 mA
IH
= 0.8V −0.003 −0.8 mA
IL
)−1−3µA
)
= −5V 0 2.0 2.1 mA
EE
= −15V, TA= 25˚C 0 2.0 4.2 mA
EE
= 2.000V,
REF
R14 = 1000Ω,
(
Figure 3
Figure 3
) 1.9 1.99 2.1 mA
)04µA
≤ 0.19%, TA= 25˚C
r
=1 mA −0.55, +0.4 V
Figure 6
Figure 3
) 4 8 mA/µs
≤ −16.5V 0.05 2.7 µA/V
EE
)
2.3 22 mA
−4.3 −13 mA
= 25˚C, (
A
Figure 3
)
4.5 5.0 5.5 V
−4.5 −15 −16.5 V
MAX
DC
DC
DC
DC
DC
DC
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Electrical Characteristics (Continued)
(VCC= 5V, VEE= −15 VDC,V
DAC0808
Symbol Parameter Conditions Min Typ Max Units
All Bits Low V
All Bits High V
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its specified operating conditions.
Note 3: Range control is not required.
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation at any temperature is P
= 125˚C, and the typical junction-to-ambient thermal resistance of the dual-in-line J package when the board mounted is 100˚C/W. For the dual-in-lineN
T
JMAX
package, this number increases to 175˚C/W and for the small outline M package this number is 100˚C/W.
Note 5: Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 6: All current switches are tested to guarantee at least 50% of rated current.
Note 7: All bits switched.
Note 8: Pin-out numbers for the DAL080X represent the dual-in-line package. The small outline package pinout differs from the dual-in-line package.
/R14 = 2 mA, and all digital inputs at high logic level unless otherwise noted.)
REF
= 5V, VEE= −5V 33 170 mW
CC
V
= 5V, VEE= −15V 106 305 mW
CC
= 15V, VEE= −5V 90 mW
CC
V
= 15V, VEE= −15V 160 mW
CC
, θJA, and the ambient temperature, TA. The maximum
D
=(T
)/θJAor the number given in the Absolute Maixmum Ratings, whichever is lower. For this device,
JMAX−TA
JMAX
Typical Application
DS005687-23
FIGURE 1. +10V Output Digital to Analog Converter (Note 8)
Typical Performance Characteristics
Logic Input Current vs
Input Voltage
DS005687-14
Bit Transfer Characteristics
DS005687-3
VCC=5V,VEE= −15V, TA= 25˚C, unless otherwise noted
Logic Threshold Voltage vs
Temperature
DS005687-15
DS005687-16
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