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參數(shù)資料
| 型號(hào)： | AD7628 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84% |
| 中文描述： | CMOS雙8位緩沖乘法DAC |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大小： | 193K |
| 代理商： | AD7628 |
AD7628
–7–
REV. A
MICROPROCE SSOR INT E RFACE
Figure 11. AD7628 Dual DAC to 6800 CPU Interface
PROGRAMMABLE WINDOW COMPARAT OR
Figure 13. Digitally Programmable Window Comparator
(Upper and Lower Limit Detector)
PROGRAMMABLE ST AT E VARIABLE FILT E R
Figure 12. AD7628 Dual DAC to 8085 CPU Interface
In the circuit of Figure 13, the AD7628 is used to implement a
programmable window comparator. DACs A and B are loaded
with the required upper and lower voltage limits for the test,
respectively. If the test input is not within the programmed lim-
its, the pass/fail output will indicate a fail (logic zero).
In this state, variable or universal filter configuration (Figure
14) for DACs A1 and B1 control the gain and Q of the filter
characteristic, while DACs A2 and B2 control the cutoff fre-
quency, f
C
. DACs A2 and B2 must track accurately for the simple
expression for f
C
to hold. T his is readily accomplished by the
AD7628. Op amps are 2
×
AD644. C3 compensates for the
effects of op amp gain-bandwidth limitations.
T he filter provides low pass, high pass and band pass outputs
and is ideally suited for applications where microprocessor con-
trol of filter parameters is required, e.g., equalizer, tone con-
trols, etc.
Programmable range for component values shown is f
C
= 0 kHz
to 15 kHz and Q = 0.3 to 4.5.
Figure 14. Digitally Controlled State Variable Filter
CIRCUIT E QUAT IONS
C
1
= C
2
, R
1
= R
2
, R
4
= R
5
f
C
=
1
2
π
R
1
C
1
Q =
R
3
R
4
.
R
F
R
FBB
1
A
O
= –
R
F
R
S
NOT E
DAC equivalent resistance equals
(
DAC Digital Code
256
×
DAC Ladder resistance
)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7628BQ | CMOS Dual 8-Bit Buffered Multiplying DAC |
| AD7628KN | CMOS Dual 8-Bit Buffered Multiplying DAC |
| AD7628KP | ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84% |
| AD7628KR | CMOS Dual 8-Bit Buffered Multiplying DAC |
| AD7628TE | CMOS Dual 8-Bit Buffered Multiplying DAC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7628BFN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7628BN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7628BQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD7628KC/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7628KCWP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
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