If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
+
− V
−
)
Power Dissipation (Note 2)
Reference Input Differential Voltage
(V14 to V15)
Reference Input Common-Mode
Range (V14, V15)
Reference Input Current
Logic Inputs
Analog Current Outputs
(V
S
− = −15V)
ESD Susceptibility (Note 3)
Storage Temperature
Lead Temp. (Soldering, 10 seconds)
Dual-In-Line Package (plastic)
Dual-In-Line Package (ceramic)
Surface Mount Package
Vapor Phase (60 seconds)
Infrared (15 seconds)
215˚C
220˚C
260˚C
300˚C
4.25 mA
TBD V
−65˚C to +150˚C
V
−
to V
+
5 mA
V
−
to V
−
plus 36V
V
−
to V
+
Operating Conditions
Min
Temperature (T
A
)
DAC0800L
DAC0800LC
DAC0802LC
V
+
V−
I
REF
(V
−
= −5V)
I
REF
(V = −15V)
−
(Note 1)
Max
+125
+70
+70
(V ) +
30
−5
2
4
−
Units
˚C
˚C
˚C
V
V
mA
mA
±
18V or 36V
500 mW
−55
0
0
(V ) +
10
−15
1
1
−
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 char-
acteristics refer to both I
OUT
and I
OUT
.
Symbol
Parameter
Resolution
Monotonicity
Nonlinearity
To
±
1
⁄
2
LSB, All Bits
Switched “ON” or “OFF”,
T
A
=25˚C
DAC0800L
DAC0800LC
t
PLH
,
t
PHL
TCI
FS
V
OC
Propagation Delay
Each Bit
All Bits Switched
Full Scale Tempco
Output Voltage
Compliance
Full Scale Current Change
<
1
⁄
2
LSB, R
OUT
>
20 MΩ,
Typical
V
REF
= 10.000V,
R14 = R15 = 5.000 kΩ,
T
A
=25˚C
I
FS4
−I
FS2
V
−
= −5V
V
−
= −8V to −18V
0
0
−10
T
A
=25˚C
35
35
60
60
35
35
60
60
ns
ns
ppm/˚C
V
100
Conditions
Min
8
8
DAC0802LC
Typ
8
8
Max
8
8
Min
8
8
DAC0800L/
DAC0800LC
Typ
8
8
Max
8
8
Bits
Bits
%FS
ns
100
100
135
150
ns
ns
Units
±
0.1
135
±
0.19
t
s
Settling Time
±
10
±
50
18
−10
±
10
±
50
18
I
FS4
I
FSS
I
ZS
I
FSR
Full Scale Current
Full Scale Symmetry
Zero Scale Current
Output Current Range
1.984
1.992
2.00
1.94
1.99
2.04
mA
µA
µA
mA
±
0.5
0.1
2.0
2.0
±
4.0
1.0
2.1
4.2
0
0
±
1
0.2
2.0
2.0
±
8.0
2.0
2.1
4.2
www.national.com
2
DAC0800/DAC0802
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 char-
acteristics refer to both I
OUT
and I
OUT
.
Parameter
Logic Input Levels
Conditions
Min
V
LC
= 0V
0.8
2.0
V
LC
= 0V
−10V
≤
V
IN
≤
+0.8V
2V
≤
V
IN
≤
+18V
V
−
= −15V
V
S
=
±
15V
−10
−10
−1.0
(Figure
11)
4.5V
≤
V
+
≤
18V
−4.5V
≤
V
−
≤
18V, I
REF
=
1mA
V
S
=
±
5V, I
REF
= 1 mA
V
S
= +5V, −15V, I
REF
= 2
mA
V
S
=
±
15V, I
REF
= 2 mA
4.0
8.0
0.0001
0.0001
2.3
−4.3
2.4
−6.4
2.5
−6.5
33
108
135
0.01
0.01
3.8
−5.8
3.8
−7.8
3.8
−7.8
48
136
174
−2.0
0.002
−10
10
18
13.5
−3.0
4.0
−10
−10
−1.0
8.0
0.0001
0.0001
2.3
−4.3
2.4
−6.4
2.5
−6.5
33
108
135
0.01
0.01
3.8
−5.8
3.8
−7.8
3.8
−7.8
48
136
174
−2.0
0.002
−10
10
18
13.5
−3.0
µA
µA
V
V
µA
mA/µs
%/%
%/%
mA
mA
mA
mA
mA
mA
mW
mW
mW
2.0
0.8
V
V
DAC0802LC
Typ
Max
Min
DAC0800L/
DAC0800LC
Typ
Max
Units
Symbol
V
IL
V
IH
I
IL
I
IH
V
IS
V
THR
I
15
dl/dt
PSSI
FS+
PSSI
FS−
I+
I−
I+
I−
I+
I−
P
D
Logic “0”
Logic “1”
Logic Input Current
Logic “0”
Logic “1”
Logic Input Swing
Logic Threshold Range
Reference Bias Current
Reference Input Slew
Rate
Positive Power Supply
Sensitivity
Negative Power Supply
Sensitivity
Power Supply Current
Power Supply Current
Power Supply Current
±
5V, I
REF
= 1 mA
Power Consumption
+5V, −15V, I
REF
= 2 mA
±
15V, I
REF
= 2 mA
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:
The maximum junction temperature of the DAC0800 and DAC0802 is 125˚C. For operating at elevated temperatures, devices in the Dual-In-Line J package
must be derated based on a thermal resistance of 100˚C/W, junction-to-ambient, 175˚C/W for the molded Dual-In-Line N package and 100˚C/W for the Small Outline
M package.
Note 3:
Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 4:
Pin numbers represent the Dual-In-Line package. The Small Outline package pin numbers differ from from that of the Dual-In-Line package.
Connection Diagrams
Dual-In-Line Package
Small Outline Package
00568614
Top View
00568613
Top View
See Ordering Information
3
www.national.com
DAC0800/DAC0802
Block Diagram
(Note 4)
00568602
Typical Performance Characteristics
Full Scale Current vs.
Reference Current
LSB Propagation Delay vs. I
FS
00568622
00568623
Reference Input
Frequency Response
Reference Amp
Common-Mode Range
00568624
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 50Ω
connected to pin 14.2V applied to R14.
00568625
Note. Positive common-mode range is always (V+) − 1.5V.
www.national.com
4
DAC0800/DAC0802
Typical Performance Characteristics
Logic Input Current vs.
Input Voltage
(Continued)
V
TH
— V
LC
vs. Temperature
00568627
00568626
Output Current vs. Output
Voltage (Output Voltage
Compliance)
Output Voltage Compliance vs.
Temperature
00568628
00568629
Bit Transfer
Characteristics
Power Supply Current
vs. +V
00568630
00568631
Note. B1–B8 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
单片机结构是什么样的，由什么模块组成 单片机（Micro Control Unit）全称微型控制单元，简称单片机(MCU)，从字面意思可以了解到它其实就是一个微型的计算机系统，51单片机包含CPU（8051内核），SRAM(内存)惨不忍睹的1K，闪存(硬盘)也只有可怜的几十K，然后外围的模块基本就是下载代码用的ISP，中断模块，基本输入输出I/O模块，复位模块，串口模块，EEPROM，看门狗...[详细]
国产芯片交流
