参数资料
型号: AD7233BNZ
厂商: Analog Devices Inc
文件页数: 5/8页
文件大小: 0K
描述: IC DAC 12BIT SRL W/AMP 8PDIP
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 1
系列: DACPORT®
设置时间: 10µs
位数: 12
数据接口: 串行
转换器数目: 1
电压电源: 双 ±
功率耗散(最大): 168mW
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
输出数目和类型: 1 电压,双极
采样率(每秒): 300k
AD7233
REV. B
–5–
There are two ways in which the DAC latch and hence the ana-
log output may be updated. The status of the
LDAC input is
examined after
SYNC is taken low. Depending on its status, one
of two update modes is selected.
If
LDAC = 0 then the automatic update mode is selected. In
this mode the DAC latch and analog output are updated auto-
matically when the last bit in the serial data stream is clocked in.
The update thus takes place on the sixteenth falling SCLK edge.
If
LDAC = 1 then the automatic update is disabled and the
DAC latch is updated by taking
LDAC low any time after the
16-bit data transfer is complete. The update now occurs on the
falling edge of
LDAC. This facility is useful for simultaneous
update in multi-DAC systems. Note that the
LDAC input must
be taken back high again before the next data transfer is initiated.
SYNC
SCLK
SDIN
LDAC
RESET
16
COUNTER/
DECODER
GATING
SIGNAL
AUTO-UPDATE
CIRCUITRY
GATING
SCLK
DAC LATCH (12 BITS)
INPUT SHIFT REGISTER (16 BITS)
Figure 2. Simplified Loading Structure
DB15
DON’T CARE
DB14
DON’T CARE
DB13
DON’T CARE
DB12
DON’T CARE
DB11
MSB
DB1
DB0
LSB
t
2
t
1
t
4
t
5
t
3
t
6
t
7
t
8
SYNC
SCLK
SDIN
LDAC
Figure 3. Timing Diagram
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