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5962-89728022A 参数 Datasheet PDF下载

5962-89728022A图片预览
型号: 5962-89728022A
PDF下载: 下载PDF文件 查看货源
内容描述: [Multiple Output, High Precision, Dual Tracking Reference]
分类和应用:
文件页数/大小: 20 页 / 577 K
品牌: ADI [ ADI ]
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Data Sheet  
AD588  
APPLICATIONS INFORMATION  
The AD588 can be configured to provide +10 V and –10 V  
reference outputs, as shown in Figure 4 and Figure 6, respectively.  
It can also be used to provide +5 V, 5 V, or a 5 V tracking  
reference, as shown in Figure 5. Table 5 details the appropriate  
pin connections for each output range. In each case, Pin 9 is  
connected to system ground, and power is applied to Pin 2  
and Pin 16.  
Amplifier A3 and Amplifier A4 can be used interchangeably.  
However, the AD588 is tested (and the specifications are  
guaranteed) with the amplifiers connected, as indicated in  
Figure 4 and Table 5. When either A3 or A4 is unused, its  
output force and sense pins should be connected or the input  
tied to ground.  
Two outputs of the same voltage can be obtained by connecting  
both A3 and A4 to the appropriate unbuffered output on Pin 6,  
Pin 8, or Pin 11. Performance in these dual-output configurations  
typically meets data sheet specifications.  
The architecture of the AD588 provides ground sense and  
uncommitted output buffer amplifiers that offer the user a great  
deal of functional flexibility. The AD588 is specified and tested  
in the configurations shown in Figure 6. The user can choose to  
take advantage of the many other configuration options available  
with the AD588. However, performance in these configurations  
is not guaranteed to meet the extremely stringent data sheet  
specifications.  
CALIBRATION  
Generally, the AD588 meets the requirements of a precision  
system without additional adjustment. Initial output voltage  
error of 1 mV and output noise specs of 10 µV p-p allow for  
accuracies of 12 bits to 16 bits. However, in applications where  
an even greater level of accuracy is required, additional calibra-  
tion may be called for. Provision for trimming has been made  
through the use of the GAIN ADJ and BAL ADJ pins (Pin 5 and  
Pin 12, respectively).  
As indicated in Table 5, a +5 V buffered output can be provided  
using Amplifier A4 in the +10 V configuration (Figure 4). A  
−5 V buffered output can be provided using Amplifier A3 in the  
−10 V configuration (Figure 6). Specifications are not guaranteed  
for the +5 V or −5 V outputs in these configurations. Performance  
is similar to that specified for the +10 V or −10 V outputs.  
The AD588 provides a precision 10 V span with a center tap  
(VCT) that is used with the buffer and ground sense amplifiers to  
achieve the voltage output configurations in Table 5. GAIN ADJ  
and BAL ADJ can be used in any of these configurations to trim  
the magnitude of the span voltage and the position of the center  
tap within the span. The gain adjust should be performed first.  
Although the trims are not interactive within the device, the  
gain trim moves the balance trim point as it changes the  
magnitude of the span.  
As indicated in Table 5, unbuffered outputs are available at  
Pin 6, Pin 8, and Pin 11. Loading of these unbuffered outputs  
impairs circuit performance.  
Table 5. Pin Connections  
Connect  
Pin 10 to Pin  
8
Unbuffered1 Output on Pins  
−10 V −5 V 0 V +5 V +10 V  
Buffered Output  
Connections  
Buffered Output on Pins  
Range  
−10 V  
−5 V 0 V +5 V +10 V  
+10 V  
8
11  
6
11 to 13, 1± to 15,  
6 to ±, and 3 to 1  
8 to 13, 1± to 15,  
6 to ±, and 3 to 1  
8 to 13, 1± to 15,  
11 to ±, and 3 to 1  
6 to ± and 3 to 1  
8 to 13 and 1± to 15  
15  
1
−5 V or +5 V  
−10 V  
11  
6
8
11  
6
6
15  
1
8
11  
15  
1
+5 V  
−5 V  
11  
11  
6
1
8
15  
1 Unbuffered outputs should not be loaded.  
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