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參數(shù)資料
| 型號： | HS7541AJP |
| 廠商： | SPECTRUM CONTROL INC |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 0.6 us SETTLING TIME, 12-BIT DAC, PQCC20 |
| 封裝： | PLASTIC, LCC-20 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 110K |
| 代理商： | HS7541AJP |
HS7541A
12-Bit CMOS Multiplying DAC
6
Copyright 2000 Sipex Corporation
minal, may be anywhere between 10k
(the
feedback resistor alone when all digital inputs
are LOW) and 7.5k
(the feedback resistor in
parallel with approximately 30k
of the R-2R
ladder network resistance when any single bit is
HIGH). Static accuracy and dynamic perfor-
mance will be affected by these variations.
UNIPOLAR OPERATION
Figure 4
shows the connections to implement
digital unipolar operation of the
HS7541A
. The
reference voltage applied to V
REF
(pin17) may be
positive or negative. The 2K
potentiometer
tied to V
, and the 1K
resistor in the feed-
back loop are both optional; they are needed
only when gain error must be trimmed to less
than 0.3% FSR. They should track each other to
better than 0.1%. It is not necessary that they
track the resistors internal to the
HS7541A
.
Figure 5. Bipolar Operation
V
REF
(–10V)
D
11
(MSB)
D
0
(LSB)
INPUT
DATA
2K
GAIN TRIM
1K
V
OUT
–
+
R
FB
I
O1
I
O2
GND
3
V
REF
V
DD
+15V
4
15
2
1
18
16
17
HS7541A
–
+
10K
10K
10K
390
500
As shown in the figure, the output current of the
HS7541A
is typically connected to an external
op amp, with its non-inverting input tied to
ground. The amplifier should be selected for
low input bias current and low drift over tem-
perature. To maintain the specified linearity, the
amplifier’s input offset voltage should be mulled
to less than
±
200
μ
V (0.1 LSB).
BIPOLAR OPERATION
Figure 5
shows the connections for bipolar
operation of the
HS7541A
. The digital input
coding is offset binary as shown in Table 2. As
is the case for unipolar operation, the gain trim
resistors can be omitted if minimum gain error
is not required. The op amp selection criteria
and offset nulling are the same as for unipolar
operation.
DIGITAL INPUT
1111 1111 1111
1000 0000 0000
0111 1111 1111
0000 0000 0000
I
0UT
-0.99975 x V
REF
-0.50000 x V
REF
-0.49975 x V
REF
0V
Table 1. Unipolar Input Coding
DIGITAL INPUT
1111 1111 1111
1000 0000 0001
1000 0000 0000
0100 0000 0000
0000 0000 0000
I
0UT
-0.99951 x V
REF
-0.00049 x V
REF
0V
+0.50000 x V
REF
+1.00000 x V
REF
Table 2. Bipolar Input Coding
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PDF描述 |
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| HS9372TB | SERIAL INPUT LOADING, 5 us SETTLING TIME, 16-BIT DAC, DIP24 |
| HSHM-H110B4-5CP1-TG30 | 110 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, PRESS FIT |
| HSHM-H110B4-5CP2-TG30 | 110 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, PRESS FIT |
| HSHM-H110B5-5CP1-TG30 | 110 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, PRESS FIT |
| HSHM-H110B5-5CP2-TG30 | 110 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, PRESS FIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HS7541AJS | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:12-Bit CMOS Multiplying DAC |
| HS7541AKN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:12-Bit CMOS Multiplying DAC |
| HS7541AKP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:12-Bit CMOS Multiplying DAC |
| HS7541AKS | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:12-Bit CMOS Multiplying DAC |
| HS7541AQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:12-Bit Digital-to-Analog Converter |
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