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AD7523 数据表(PDF) 7 Page - Intersil Corporation

部件名 AD7523
功能描述  8-Bit, Multiplying D/A Converters
Download  9 Pages
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

AD7523 数据表(HTML) 7 Page - Intersil Corporation

  AD7523 Datasheet HTML 1Page - Intersil Corporation AD7523 Datasheet HTML 2Page - Intersil Corporation AD7523 Datasheet HTML 3Page - Intersil Corporation AD7523 Datasheet HTML 4Page - Intersil Corporation AD7523 Datasheet HTML 5Page - Intersil Corporation AD7523 Datasheet HTML 6Page - Intersil Corporation AD7523 Datasheet HTML 7Page - Intersil Corporation AD7523 Datasheet HTML 8Page - Intersil Corporation AD7523 Datasheet HTML 9Page - Intersil Corporation  
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10-14
Offset Adjustment
1. Adjust VREF to approximately +10V.
2. Connect all digital inputs to “Logic 1”.
3. Adjust IOUT2 amplifier offset adjust trimpot for 0V ±1mV at
IOUT2 amplifier output.
4. Connect MSB (Bit 1) to “Logic 1” and all other bits to “Logic 0”.
5. Adjust IOUT1 amplifier offset adjust trimpot for 0V ±1mV at
VOUT.
Gain Adjustment
1. Connect all digital inputs to V+.
2. Monitor VOUT for a -VREF (1 - 2
-9) volts reading.
3. To increase VOUT, connect a series resistor of up to 250Ω
between VOUT and RFEEDBACK.
4. To decrease VOUT, connect a series resistor of up to 250Ω
between the reference voltage and the VREF terminal.
FIGURE 5. PROGRAMMABLE FUNCTION GENERATOR
VOUT = -VIN/D
Where:
FIGURE 6. DIVIDER (DIGITALLY CONTROLLED GAIN)
FIGURE 7. MODIFIED SCALE FACTOR AND OFFSET
6
-
+
OUT1
15
16
1
4
13
3
2
AD7523/
MSB
LSB
14
NC
DIGITAL FREQUENCY
CONTROL WORD
AD7533
+15V
VDD
A1
C1
CALIBRATE
10K
6.8V
(2)
6
-
+
A2
10K 1%
10K 1%
4.7K
TRIANGULAR
WAVE
SQUARE
WAVE
1K
OUT2
6
-
+
OUT2
14
24
11
3
1
AD7523/
MSB
LSB
16
+15V
VIN
DIGITAL
INPUT
AD7533
15
BIT 8 (10) (AD7533)
BIT 1
“D”
VREF
VOUT
OUT1
RFB
D
Bit 1
2
1
-------------
Bit 2
2
2
-------------
Bit 8
2
2
-------------
++
=
0D
255
256
----------
≤≤


6
-
+
15
16
1
4
13
3
2
AD7523/
MSB
LSB
14
R1
AD7533
+15V
6
-
+
BIT 1
BIT 8
DIGITAL
INPUT
“D”
R2
VREF
VOUT
(10) (AD7533)
V
OUT
V
REF
R
2
R
1
R
2
+
----------------------



R
1
D
R
1
R
2
+
----------------------



=
Where D
Bit 1
2
1
------------
Bit 2
2
2
------------
Bit 8
2
8
------------
++
=
0D
255
256
----------
≤≤


AD7523, AD7533


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