- 您现在的位置：买卖IC网 > PDF目录378276 > AD7523 (Intersil Corporation) 8-Bit, Multiplying D/A Converters PDF资料下载
参数资料
| 型号： | AD7523 |
| 厂商： | Intersil Corporation |
| 英文描述： | 8-Bit, Multiplying D/A Converters |
| 中文描述： | 8位乘法D / A转换 |
| 文件页数： | 6/9页 |
| 文件大小： | 99K |
| 代理商： | AD7523 |
10-13
Offset Adjustment
1. Adjust V
REF
to approximately +10V.
2. Connect all digital inputs to “Logic 1”.
3. Adjust I
OUT2
amplifier offset adjust trimpot for 0V
±
1mV at
I
OUT2
amplifier output.
4. Connect MSB (Bit 1) to “Logic 1” and all other bits to
“Logic 0”.
5. Adjust I
OUT1
amplifier offset adjust trimpot for 0V
±
1mV
at V
OUT
.
Gain Adjustment
1. Connect all digital inputs to V+.
2. Monitor V
OUT
for a -V
REF
(1
1
/
28
) volts reading.
3. To increase V
OUT
, connect a series resistor, R2, of up to
250
between V
OUT
and R
FEEDBACK
.
4. To decrease V
OUT
, connect a series resistor, R1, of up to
250
between the reference voltage and the V
REF
terminal.
Bipolar (Offset Binary) Operation - AD7533
The circuit configuration for operating the AD7533 in the
bipolar mode is given in Figure 3. Using offset binary digital
input codes and positive and negative reference voltage val-
ues, 4-Quadrant multiplication can be realized. The “Digital
Input Code/Analog Output Value” table for bipolar mode is
given in Table 4.
A “Logic 1” input at any digital input forces the corresponding
ladder switch to steer the bit current to I
OUT1
bus. A “Logic 0”
input forces the bit current to I
OUT2
bus. For any code the
I
OUT1
and I
OUT2
bus currents are complements of one
another. The current amplifier at I
OUT2
changes the polarity of
I
OUT2
current and the transconductance amplifier at I
OUT1
output sums the two currents. This configuration doubles the
output range. The difference current resulting at zero offset
binary code, (MSB = “Logic 1”, all other bits = “Logic 0”), is cor-
rected by using an external resistor, (10M
), from V
REF
to
I
OUT2
.
TABLE 4. UNlPOLAR BINARY CODE - AD7533
DIGITAL INPUT
MSB
LSB
(NOTE 1)
NOMINAL ANALOG OUTPUT
1111111111
1000000001
1000000000
0
0111111111
0000000001
0000000000
NOTES:
1. V
OUT
as shown in the Functional Diagram.
2. Nominal Full Scale for the circuit of Figure 6 is given by:
.
3. Nominal LSB magnitude for the circuit of Figure 3 is given by:
.
-VREF
---------
-VREF
---------
+VREF
---------
+VREF
---------
+VREF
---------
FSR
VREF
------------
=
LSB
VREF
---------
=
FIGURE 4. 10-BIT AND SIGN MULTIPLYING DAC
OUT2
6
+
-
R
FEEDBACK
6
+
-
OUT1
15
16
1
4
13
3
2
AD7533
MSB
LSB
14
V+
V
REF
MAGNITUDE
BITS
±
10V
BIPOLAR
ANALOG INPUT
V
OUT
10K
GND
SIGN BIT
DIGITAL
INPUT
10K
1
/
2
IH5140
5K
AD7523, AD7533
相关PDF资料 |
PDF描述 |
|---|---|
| AD7523KN | 8-Bit, Multiplying D/A Converters |
| AD7523LN | 8-Bit, Multiplying D/A Converters |
| AD7523JN | 8-Bit, Multiplying D/A Converters |
| AD7739 | 8-Channel, High Throughput, 24-Bit Sigma-Delta ADC |
| AD7739BRU | 8-Channel, High Throughput, 24-Bit Sigma-Delta ADC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7523 WAF | 制造商:Intersil Corporation 功能描述: |
| AD7523AD | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Data Acquisition |
| AD7523BD | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Data Acquisition |
| AD7523CD | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Data Acquisition |
| AD7523JCWE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Digital-to-Analog Converter |
发布紧急采购，3分钟左右您将得到回复。