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参数资料
| 型号： | AD7523JN |
| 厂商： | HARRIS SEMICONDUCTOR |
| 元件分类： | DAC |
| 英文描述： | 8-Bit, Multiplying D/A Converters |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDIP16 |
| 文件页数： | 3/9页 |
| 文件大小： | 99K |
| 代理商： | AD7523JN |
10-10
Definition of Terms
Nonlinearity:
Error contributed by deviation of the DAC
transfer function from a “best straight line” through the actual
plot of transfer function. Normally expressed as a
percentage of full scale range or in (sub)multiples of 1 LSB.
Resolution:
It is addressing the smallest distinct analog
output change that a D/A converter can produce. It is
commonly expressed as the number of converter bits. A
converter with resolution of n bits can resolve output changes
of 2
-N
of the full-scale range, e.g., 2
-N
V
REF
for a unipolar
conversion. Resolution by no means implies linearity.
Settling Time:
Time required for the output of a DAC to
settle to within specified error band around its final value
(e.g.,
1
/
2
LSB) for a given digital input change, i.e., all digital
inputs LOW to HIGH and HIGH to LOW.
Gain Error:
The difference between actual and ideal analog
output values at full-scale range, i.e., all digital inputs at
HIGH state. It is expressed as a percentage of full scale
range or in (sub)multiples of 1 LSB.
Feedthrough Error:
Error caused by capacitive coupling
from V
REF
to I
OUT1
with all digital inputs LOW.
Output Capacitance:
Capacitance from I
OUT1
, and I
OUT2
terminals to ground.
Output Leakage Current:
Current which appears on
I
OUT1
, terminal when all digital inputs are LOW or on I
OUT2
terminal when all digital inputs are HIGH.
For further information on the use of this device, see the
following Application Notes:
ANALOG OUTPUT
Output Capacitance
C
OUT1
All Digital Inputs High
(Note 4)
C
OUT2
-
100
-
100
-
100
-
100
pF
-
30
-
30
-
35
-
35
pF
C
OUT1
All Digital Inputs Low
(Note 4)
C
OUT2
-
30
-
30
-
35
-
35
pF
-
100
-
100
-
100
-
100
pF
DIGITAL INPUTS
Low State Threshold, V
IL
-
0.8
-
0.8
-
0.8
-
0.8
V
High State Threshold, V
IH
2,4
-
2,4
-
2.4
-
2.4
-
V
Input Current (Low or High),
I
IL
, I
IH
V
IN
= 0V or + 15V
-
±
1
-
±
1
-
±
1
-
±
1
μ
A
Input Coding
See Tables 1 and 3
Binary/Offset Binary
Binary/Offset Binary
Input Capacitance
(Note 4)
-
4
-
4
-
4
-
4
pF
POWER SUPPLY CHARACTERISTICS
Power Supply Voltage Range
(Note 6)
+5 to +16
+5 to +16
V
I+
All Digital Inputs High or
Low (Excluding Ladder
Network)
-
2
-
2.5
-
2
-
2.5
mA
NOTES:
2. Full Scale Range (FSR) is 10V for unipolar and
±
10V for bipolar modes.
3. Using internal feedback resistor, R
FEEDBACK
.
4. Guaranteed by design or characterization and not production tested.
5. Accuracy not guaranteed unless outputs at ground potential.
6. Accuracy is tested and guaranteed at V+ = +15V, only.
Electrical Specifications
V+ = +15V, V
REF
= +10V, V
OUT1
= V
OUT2
= 0V, Unless Otherwise Specified
(Continued)
PARAMETER
TEST CONDITIONS
AD7523
AD7533
UNITS
T
A
25
o
C
T
A
MIN-MAX
T
A
25
o
C
T
A
MIN-MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
NOTE #
DESCRIPTION
AnswerFAX
DOC. #
AN002
“Principles of Data Acquisition and
Conversion”
9002
AN018
“Do’s and Don’ts of Applying A/D
Converters”
9018
AN042
“Interpretation of Data Conversion
Accuracy Specifications”
9042
AD7523, AD7533
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