参数资料
型号: 20-151-0178
厂商: Rabbit Semiconductor
文件页数: 54/162页
文件大小: 0K
描述: CABLE CONVERTER RS-232 TO USB
标准包装: 1
附件类型: USB 至 RS232 适配器
适用于相关产品: 基于 Rabbit 的板
产品目录页面: 619 (CN2011-ZH PDF)
其它名称: 20-151-0178-ND
316-1181
4.3.12 Digital-to-Analog Converters
The RabbitFLEX BL300F can have up to two DAC channels. The analog output from channel #0 comes
out on J2, pin 7or can be used to drive the optional speaker output (See Section 4.3.12.3 ). Analog output
channel #1 comes out on J2, pin 8. There are two voltage output range options:
? 0-3 V
? 0-10 V
There are two things to notice in the circuit schematics for the DAC channels ( Figure 4-21 and Figure 4-
22 ). First, the 0-10 V DAC channel uses the op amp to increase the PWM voltage to the desired range.
Second, the +K voltage is user-supplied and must be at least +12 V, and no more than 30 V when either
DAC channel is set to the 0-10 voltage range.
NOTE: The DACs are powered by the same voltage source, which means that a 0-3 V DAC
will be powered by +K on J2 if the 0-10 V DAC also exists. If there is no 0-10 V DAC, any 0-
3 V DACs will be powered by +5 V.
48
RabbitFLEX BL300F Options
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