参数资料
型号: AD767KPZ-REEL
厂商: Analog Devices Inc
文件页数: 8/8页
文件大小: 0K
描述: IC DAC 12BIT W/AMP 28-PLCC
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 750
设置时间: 3µs
位数: 12
数据接口: 并联
转换器数目: 1
电压电源: 双 ±
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC(11.51x11.51)
包装: 带卷 (TR)
输出数目和类型: 1 电压,单极;1 电压,双极
采样率(每秒): *
AD767
REV. A
–8–
C1068a–10–4/88
PRINTED
IN
U.S.A.
Figure 9. TMS32020 – AD767 Interface
ADSP-2100 – AD767 INTERFACE
The ADSP-2100 single chip DSP processor may be interfaced
to the AD767 as shown in Figure 10. With a clock frequency of
32 MHz, and instruction execution in a single 125 ns cycle, the
processor will support the AD767 interface with a single wait
state.
Figure 10. ADSP-2100 – AD767 Interface
At the beginning of the data memory access cycle the processor
provides a 14-bit address on the DMA bus. The DMS signal is
then asserted enabling a LOW address decode. Valid data is
now placed on the data bus and DMWR is issued. DMWR is
OR’ed with the LOW address decode to generate the AD767
CS
.
The LOW decoded address is also gated with the Q output of a
D flip-flop to hold DMACK (Data Memory Acknowledge)
LOW. This forces the processor into a wait state and extends
the AD767 CS by 1 clock cycle. The rising edge of CLKOUT
latches Q HIGH bringing DMACK HIGH. The cycle is now
complete.
TMS320C25 – AD767 INTERFACE
Figure 11 illustrates the AD767 interface to a TMS320C25
digital signal processor. Due to the high-speed capability of the
processor (40 MHz), a single wait state is required and is easily
generated using MSC. A 20 MHz TMS320C25 however, does
not require wait states and should be interfaced using the circuit
shown in Figure 9.
Figure 11. TMS320C25 – AD767 Interface
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
24-Pin Ceramic (Suffix D)
24-Pin Plastic (Suffix N)
28-Pin PLCC (Suffix P)
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