NSC DAC0808LCN, DAC0808LCMX, DAC0808LCM Datasheet
DAC0808
8-Bit D/A Converter
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
±
5V supplies.
No reference current (I
REF
) trimming is required for most ap-
plications since the full scale output current is typically
±
1
LSB of 255 I
REF
/256. Relative accuracies of better than
±
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
REF
≥2 mA. The power supply currents of the
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.
Features
n Relative accuracy:±0.19%error maximum
n Full scale current match:
±
1 LSB typ
n Fast settling time: 150 ns typ
n Noninverting digital inputs are TTL and CMOS
compatible
n High speed multiplying input slew rate: 8 mA/µs
n Power supply voltage range:
±
4.5V to±18V
n Low power consumption: 33 mW
@
±
5V
Block and Connection Diagrams
DS005687-1
Dual-In-Line Package
DS005687-2
Top View
Order Number DAC0808
See NS Package M16A or N16A
May 1999
DAC0808 8-Bit D/A Converter
© 1999 National Semiconductor Corporation DS005687 www.national.com
Block and Connection Diagrams (Continued)
Ordering Information
ACCURACY OPERATING
TEMPERATURE RANGE N PACKAGE (N16A)
(Note 1)
SO PACKAGE
(M16A)
8-bit 0˚C≤T
A
≤+75˚C DAC0808LCN MC1408P8 DAC0808LCM
Note 1: Devices may be ordered by using either order number.
Small-Outline Package
DS005687-13
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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
+18 V
DC
V
EE
−18 V
DC
Digital Input Voltage, V5–V12 −10 VDCto +18 V
DC
Applied Output Voltage, V
O
−11 VDCto +18 V
DC
Reference Current, I
14
5mA
Reference Amplifier Inputs, V14, V15 V
CC,VEE
Power Dissipation (Note 4) 1000 mW
ESD Susceptibility (Note 5) TBD
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
MIN
≤ TA≤ T
MAX
DAC0808 0 ≤TA≤ +75˚C
Electrical Characteristics
(V
CC
=
5V, V
EE
=
−15 V
DC,VREF
/R14=2 mA, and all digital inputs at high logic level unless otherwise noted.)
Symbol Parameter Conditions Min Typ Max Units
E
r
Relative Accuracy (Error Relative (
Figure 4
)
%
to Full Scale I
O
)
DAC0808LC (LM1408-8)
±
0.19
%
Settling Time to Within
1
⁄2LSB T
A
=
25˚C (Note 7), 150 ns
(Includes t
PLH
)(
Figure 5
)
t
PLH,tPHL
Propagation Delay Time T
A
=
25˚C, (
Figure 5
) 30 100 ns
TCI
O
Output Full Scale Current Drift
±
20 ppm/˚C
MSB Digital Input Logic Levels (
Figure 3
)
V
IH
High Level, Logic “1” 2 V
DC
V
IL
Low Level, Logic “0” 0.8 V
DC
MSB Digital Input Current (
Figure 3
)
High Level V
IH
=
5V 0 0.040 mA
Low Level V
IL
=
0.8V −0.003 −0.8 mA
I
15
Reference Input Bias Current (
Figure 3
)−1−3µA
Output Current Range (
Figure 3
)
V
EE
=
−5V 0 2.0 2.1 mA
V
EE
=
−15V, T
A
=
25˚C 0 2.0 4.2 mA
I
O
Output Current V
REF
=
2.000V,
R14=1000Ω,
(
Figure 3
) 1.9 1.99 2.1 mA
Output Current, All Bits Low (
Figure 3
)04µA
Output Voltage Compliance (Note 3) E
r
≤ 0.19%,T
A
=
25˚C
V
EE
=
−5V, I
REF
=
1 mA −0.55, +0.4 V
DC
VEEBelow −10V −5.0, +0.4 V
DC
SRI
REF
Reference Current Slew Rate (
Figure 6
) 4 8 mA/µs
Output Current Power Supply −5V ≤ V
EE
≤ −16.5V 0.05 2.7 µA/V
Sensitivity
Power Supply Current (All Bits (
Figure 3
)
Low)
I
CC
2.3 22 mA
I
EE
−4.3 −13 mA
Power Supply Voltage Range T
A
=
25˚C, (
Figure 3
)
V
CC
4.5 5.0 5.5 V
DC
V
EE
−4.5 −15 −16.5 V
DC
Power Dissipation
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Electrical Characteristics (Continued)
(V
CC
=
5V, V
EE
=
−15 V
DC,VREF
/R14=2 mA, and all digital inputs at high logic level unless otherwise noted.)
Symbol Parameter Conditions Min Typ Max Units
All Bits Low V
CC
=
5V, V
EE
=
−5V 33 170 mW
V
CC
=
5V, V
EE
=
−15V 106 305 mW
All Bits High V
CC
=
15V, V
EE
=
−5V 90 mW
V
CC
=
15V, V
EE
=
−15V 160 mW
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
JMAX
, θJA, and the ambient temperature, TA. The maximum
allowable power dissipation at any temperature is P
D
=
(T
JMAX−TA
)/θJAor the number given in the Absolute Maixmum Ratings, whichever is lower. For this device,
T
JMAX
=
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-line N pack-
age, 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.
Typical Application
Typical Performance Characteristics
V
CC
=
5V, V
EE
=
−15V, T
A
=
25˚C, unless otherwise noted
DS005687-3
DS005687-23
FIGURE 1. +10V Output Digital to Analog Converter (Note 8)
Logic Input Current vs
Input Voltage
DS005687-14
Bit Transfer Characteristics
DS005687-15
Logic Threshold Voltage vs
Temperature
DS005687-16
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