TL H 5687
DAC0808DAC0807DAC0806
8-Bit
DA
Converters
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
g
5V sup-
plies No reference current (I
REF
) trimming is required for
most applications since the full scale output current is typi-
cally
g
1 LSB of 255 I
REF
256 Relative accuracies of bet-
ter than
g
0 19% assure 8-bit monotonicity and linearity
while zero level output current of less than 4 mA provides
8-bit zero accuracy for I
REF
t
2 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
g
0 19% error maximum (DAC0808)
Y
Full scale current match
g
1 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
g
4 5V to
g
18V
Y
Low power consumption 33 mW
g
5V
Block and Connection Diagrams
TL H 5687 1
Dual-In-Line Package
TL H 5687 2
Small-Outline Package
TL H 5687 13
Top View
Ordering Information
ACCURACY
OPERATING TEMPERATURE
ORDER NUMBERS
RANGE
J PACKAGE (J16A)
N PACKAGE (N16A)
SO PACKAGE (M16A)
DAC0808LCN MC1408P8
DAC0808LCM
7-bit
0 C
s
T
A
s
a
75 C
DAC0807LCJ MC1408L7 DAC0807LCN MC1408P7
DAC0807LCM
6-bit
0 C
s
T
A
s
a
75 C
DAC0806LCJ MC1408L6 DAC0806LCN MC1408P6
DAC0806LCM
Note
Devices may be ordered by using either order number
Order Number
DAC0808 DAC0807
or DAC0806
See NS Package
Number J16A
M16A or N16A
C1995 National Semiconductor Corporation
RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
(Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Power Supply Voltage
V
CC
a
18 V
DC
V
EE
b
18 V
DC
Digital Input Voltage V5 V12
b
10 V
DC
to
a
18 V
DC
Applied Output Voltage V
O
b
11 V
DC
to
a
18 V
DC
Reference Current I
14
5 mA
Reference Amplifier Inputs V14 V15
V
CC
V
EE
Power Dissipation (Note 3)
1000 mW
ESD Susceptibility (Note 4)
TBD
Storage Temperature Range
b
65 C to
a
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
s
T
A
s
T
MAX
DAC0808LC Series
0
s
T
A
s
a
75 C
Electrical Characteristics
(V
CC
e
5V V
EE
e b
15 V
DC
V
REF
R14
e
2 mA DAC0808 T
A
e b
55 C to
a
125 C DAC0808C DAC0807C DAC0806C T
A
e
0 C to
a
75 C 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)
g
0 19
%
DAC0807LC (LM1408-7) (Note 5)
g
0 39
%
DAC0806LC (LM1408-6) (Note 5)
g
0 78
%
Settling Time to Within
LSB
T
A
e
25 C (Note 6)
150
ns
(Includes t
PLH
)
(Figure 5)
t
PLH
t
PHL
Propagation Delay Time
T
A
e
25 C
(Figure 5)
30
100
ns
TCI
O
Output Full Scale Current Drift
g
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
e
5V
0
0 040
mA
Low Level
V
IL
e
0 8V
b
0 003
b
0 8
mA
I
15
Reference Input Bias Current
(Figure 3)
b
1
b
3
m
A
Output Current Range
(Figure 3)
V
EE
e b
5V
0
2 0
2 1
mA
V
EE
e b
15V T
A
e
25 C
0
2 0
4 2
mA
I
O
Output Current
V
REF
e
2 000V
R14
e
1000X
(Figure 3)
1 9
1 99
2 1
mA
Output Current All Bits Low
(Figure 3)
0
4
m
A
Output Voltage Compliance (Note 2)
E
r
s
0 19% T
A
e
25 C
V
EE
e b
5V I
REF
e
1 mA
b
0 55
a
0 4
V
DC
V
EE
Below
b
10V
b
5 0
a
0 4
V
DC
2
Electrical Characteristics
(Continued)
(V
CC
e
5V V
EE
e b
15 V
DC
V
REF
R14
e
2 mA DAC0808 T
A
e b
55 C to
a
125 C DAC0808C DAC0807C DAC0806C T
A
e
0 C to
a
75 C and all digital inputs at high logic level unless otherwise noted )
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SRI
REF
Reference Current Slew Rate
(Figure 6)
4
8
mA ms
Output Current Power Supply
b
5V
s
V
EE
s
b
16 5V
0 05
2 7
m
A V
Sensitivity
Power Supply Current (All Bits
(Figure 3)
Low)
I
CC
2 3
22
mA
I
EE
b
4 3
b
13
mA
Power Supply Voltage Range
T
A
e
25 C
(Figure 3)
V
CC
4 5
5 0
5 5
V
DC
V
EE
b
4 5
b
15
b
16 5
V
DC
Power Dissipation
All Bits Low
V
CC
e
5V V
EE
e b
5V
33
170
mW
V
CC
e
5V V
EE
e b
15V
106
305
mW
All Bits High
V
CC
e
15V V
EE
e b
5V
90
mW
V
CC
e
15V V
EE
e b
15V
160
mW
Note 1
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 2
Range control is not required
Note 3
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
i
JA
and the ambient temperature T
A
The maximum
allowable power dissipation at any temperature is P
D
e
(T
JMAX
b
T
A
) i
JA
or the number given in the Absolute Maixmum Ratings whichever is lower For this
device T
JMAX
e
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 package this number increases to 175 C W and for the small outline M package this number is 100 C W
Note 4
Human body model 100 pF discharged through a 1 5 kX resistor
Note 5
All current switches are tested to guarantee at least 50% of rated current
Note 6
All bits switched
Note 7
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
V
O
e
10V
A1
2
a
A2
4
a
A8
256
J
TL H 5687 3
FIGURE 1
a
10V Output Digital to Analog Converter (Note 7)
3
Typical Performance Characteristics
V
CC
e
5V V
EE
e b
15V T
A
e
25 C unless otherwise noted
Logic Input Current vs
Input Voltage
Bit Transfer Characteristics
Logic Threshold Voltage vs
Temperature
Output Current vs Output
Voltage (Output Voltage
Compliance)
Output Voltage Compliance
vs Temperature
Typical Power Supply
Current vs Temperature
Typical Power Supply
Current vs V
EE
Typical Power Supply
Current vs V
CC
Reference Input
Frequency Response
Unless otherwise specified R14
e
R15
e
1 kX C
e
15 pF pin 16 to
V
EE
R
L
e
50X pin 4 to ground
Curve A
Large Signal Bandwidth
Method of
Figure 7 V
REF
e
2 Vp-p
offset 1 V above ground
Curve B
Small Signal Bandwidth
Method of
Figure 7 R
L
e
250X V
REF
e
50 mVp-p offset 200 mV above
ground
Curve C
Large and Small Signal
Bandwidth Method of
Figure 9 (no op
amp R
L
e
50X) R
S
e
50X V
REF
e
2V V
S
e
100 mVp-p centered at 0V
TL H 5687 5
4
TLH5687
4
FIGURE
2
Equivalent
Circuit
of
the
DAC0808
Series
(Note
7)
5
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