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, V
LC
, grounded.
Changing the V
LC
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
Ordering Information
Non-Linearity
Temperature
Order Numbers
Range
J Package (J16A) (Note 1)
N Package (N16E) (Note 1) SO Package (M16A)
0.1% FS
0C
T
A
+70C
DAC0802LCJ
DAC-08HQ DAC0802LCN
DAC-08HP
DAC0802LCM
0.19% FS
-55C
T
A
+125C
DAC0800LJ
DAC-08Q
0.19% FS
0C
T
A
+70C
DAC0800LCJ
DAC-08EQ
DAC0800LCN
DAC-08EP
DAC0800LCM
Note 1: Devices may be ordered by using either order number.
DS005686-1
FIGURE 1.
20 V
P-P
Output Digital-to-Analog Converter (Note 5)
June 1999
DAC0800/DAC0802
8-Bit
Digital-to-Analog
Converters
1999 National Semiconductor Corporation
DS005686
www.national.com
Absolute Maximum Ratings
(Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
+
- V
-
)
18V or 36V
Power Dissipation (Note 3)
500 mW
Reference Input Differential Voltage
(V14 to V15)
V
-
to V
+
Reference Input Common-Mode
Range (V14, V15)
V
-
to V
+
Reference Input Current
5 mA
Logic Inputs
V
-
to V
-
plus 36V
Analog Current Outputs
(V
S
- = -15V)
4.25 mA
ESD Susceptibility (Note 4)
TBD V
Storage Temperature
-65C to +150C
Lead Temp. (Soldering, 10 seconds)
Dual-In-Line Package (plastic)
260C
Dual-In-Line Package (ceramic)
300C
Surface Mount Package
Vapor Phase (60 seconds)
215C
Infrared (15 seconds)
220C
Operating Conditions
(Note 2)
Min
Max
Units
Temperature (T
A
)
DAC0800L
-55
+125
C
DAC0800LC
0
+70
C
DAC0802LC
0
+70
C
Electrical Characteristics
The following specifications apply for V
S
=
15V, I
REF
= 2 mA and T
MIN
T
A
T
MAX
unless otherwise specified. Output
characteristics refer to both I
OUT
and I
OUT
.
DAC0802LC
DAC0800L/
Symbol
Parameter
Conditions
DAC0800LC
Units
Min
Typ
Max
Min
Typ
Max
Resolution
8
8
8
8
8
8
Bits
Monotonicity
8
8
8
8
8
8
Bits
Nonlinearity
0.1
0.19
%FS
t
s
Settling Time
To
1
/
2
LSB, All Bits Switched
100
135
ns
"ON" or "OFF", T
A
=25C
DAC0800L
100
135
ns
DAC0800LC
100
150
ns
tPLH,
Propagation Delay
T
A
=25C
tPHL
Each Bit
35
60
35
60
ns
All Bits Switched
35
60
35
60
ns
TCI
FS
Full Scale Tempco
10
50
10
50
ppm/C
V
OC
Output Voltage Compliance
Full Scale Current Change
-10
18
-10
18
V
<
1
/
2
LSB, R
OUT
>
20 M
Typ
I
FS4
Full Scale Current
V
REF
=10.000V, R14=5.000 k
1.984
1.992
2.000
1.94
1.99
2.04
mA
R15=5.000 k
, T
A
=25C
I
FSS
Full Scale Symmetry
I
FS4
-I
FS2
0.5
4.0
1
8.0
A
I
ZS
Zero Scale Current
0.1
1.0
0.2
2.0
A
I
FSR
Output Current Range
V
-
=-5V
0
2.0
2.1
0
2.0
2.1
mA
V
-
=-8V to -18V
0
2.0
4.2
0
2.0
4.2
mA
Logic Input Levels
V
IL
Logic "0"
V
LC
=0V
0.8
0.8
V
V
IH
Logic "1"
2.0
2.0
V
Logic Input Current
V
LC
=0V
I
IL
Logic "0"
-10V
V
IN
+0.8V
-2.0
-10
-2.0
-10
A
I
IH
Logic "1"
2V
V
IN
+18V
0.002
10
0.002
10
A
V
IS
Logic Input Swing
V
-
=-15V
-10
18
-10
18
V
V
THR
Logic Threshold Range
V
S
=
15V
-10
13.5
-10
13.5
V
I
15
Reference Bias Current
-1.0
-3.0
-1.0
-3.0
A
dl/dt
Reference Input Slew Rate
(
Figure 11
)
4.0
8.0
4.0
8.0
mA/s
PSSI
FS+
Power Supply Sensitivity
4.5V
V
+
18V
0.0001
0.01
0.0001
0.01
%/%
PSSI
FS-
-4.5V
V
-
18V
0.0001
0.01
0.0001
0.01
%/%
I
REF
=1mA
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2
Electrical Characteristics
(Continued)
The following specifications apply for V
S
=
15V, I
REF
= 2 mA and T
MIN
T
A
T
MAX
unless otherwise specified. Output
characteristics refer to both I
OUT
and I
OUT
.
DAC0802LC
DAC0800L/
Symbol
Parameter
Conditions
DAC0800LC
Units
Min
Typ
Max
Min
Typ
Max
Power Supply Current
V
S
=
5V, I
REF
=1 mA
I+
2.3
3.8
2.3
3.8
mA
I-
-4.3
-5.8
-4.3
-5.8
mA
V
S
=5V, -15V, I
REF
=2 mA
I+
2.4
3.8
2.4
3.8
mA
I-
-6.4
-7.8
-6.4
-7.8
mA
V
S
=
15V, I
REF
=2 mA
I+
2.5
3.8
2.5
3.8
mA
I-
-6.5
-7.8
-6.5
-7.8
mA
P
D
Power Dissipation
5V, I
REF
=1 mA
33
48
33
48
mW
5V,-15V, I
REF
=2 mA
108
136
108
136
mW
15V, I
REF
=2 mA
135
174
135
174
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: The maximum junction temperature of the DAC0800 and DAC0802 is 125C. For operating at elevated temperatures, devices in the Dual-In-Line J package
must be derated based on a thermal resistance of 100C/W, junction-to-ambient, 175C/W for the molded Dual-In-Line N package and 100C/W for the Small Outline
M package.
Note 4: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5: Pin-out numbers for the DAC080X represent the Dual-In-Line package. The Small Outline package pin-out differs from the Dual-In-Line package.
Connection Diagrams
Dual-In-Line Package
DS005686-13
Top View
Small Outline Package
DS005686-14
Top View
See Ordering Information
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3
Block Diagram
(Note 5)
Typical Performance Characteristics
DS005686-2
Full Scale Current
vs Reference Current
DS005686-22
LSB Propagation Delay vs I
FS
DS005686-23
Reference Input
Frequency Response
DS005686-24
Curve 1: C
C
=15 pF, V
IN
=2 Vp-p centered at 1V.
Curve 2: C
C
=15 pF, V
IN
=50 mVp-p centered at
200 mV.
Curve 3: C
C
=0 pF, V
IN
=100 mVp-p centered at
0V and applied through 50
connected to pin
14.2V applied to R14.
Reference Amp
Common-Mode Range
DS005686-25
Note. Positive common-mode range is always
(V+) - 1.5V.
Logic Input Current
vs Input Voltage
DS005686-26
V
TH
-- V
LC
vs Temperature
DS005686-27
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4
Typical Performance Characteristics
(Continued)
Equivalent Circuit
Output Current vs Output
Voltage (Output Voltage
Compliance)
DS005686-28
Output Voltage Compliance
vs Temperature
DS005686-29
Bit Transfer
Characteristics
DS005686-30
Note. B1B8 have identical transfer
characteristics. Bits are fully switched with less
than
1
/
2
LSB error, at less than
100 mV from
actual threshold. These switching points are
guaranteed to lie between 0.8 and 2V over the
operating temperature range (V
LC
= 0V).
Power Supply Current
vs +V
DS005686-31
Power Supply Current
vs -V
DS005686-32
Power Supply Current
vs Temperature
DS005686-33
DS005686-15
FIGURE 2.
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