参数资料
型号: AD5446YRMZ-RL7
厂商: Analog Devices Inc
文件页数: 26/29页
文件大小: 0K
描述: IC DAC 14BIT SRL 10MSOP
设计资源: Versatile High Precision Programmable Current Sources Using DACs, Op Amps, and MOSFET Transistors (CN0151)
标准包装: 1,000
位数: 14
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
电压电源: 单电源
功率耗散(最大): 50.5µW
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 带卷 (TR)
输出数目和类型: 2 电流,单极;2 电流,双极
采样率(每秒): 2.7M
Data Sheet
AD5444/AD5446
Rev. E | Page 5 of 28
TIMING CHARACTERISTICS
All input signals are specified with tr = tf = 1 ns (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2. VDD = 2.5 V to 5.5 V,
VREF = 10 V, IOUT2 = 0 V, temperature range for Y version: 40°C to +125°C; all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter1
VDD = 4.5 V to
5.5 V
VDD = 2.5 V to
5.5 V
Unit
Conditions/Comments
fSCLK
50
MHz max
Maximum clock frequency.
t1
20
ns min
SCLK cycle time.
t2
8
ns min
SCLK high time.
t3
8
ns min
SCLK low time.
t4
8
ns min
SYNC falling edge to SCLK active edge setup time.
t5
5
ns min
Data setup time.
t6
4.5
ns min
Data hold time.
t7
5
ns min
SYNC rising edge to SCLK active edge setup time
t8
30
ns min
Minimum SYNC high time.
t9
23
30
ns min
SCLK active edge to SDO valid.
Update Rate
2.7
MSPS
Consists of cycle time, SYNC high time, data setup time and output
voltage settling time.
1 Guaranteed by design and characterization; not subject to production test.
0
45
88
-0
02
t7
t1
t3
t2
t4
t5
t6
DB15
DB0
SCLK
SYNC
SDIN
t8
Figure 2. Standalone Timing Diagram
DB15 (N)
DB0 (N)
DB15
(N + 1)
DB0
(N + 1)
SCLK
SDIN
SDO
NOTES
ALTERNATIVELY, DATA CAN BE CLOCKED INTO INPUT SHIFT REGISTER ON RISING EDGE OF SCLK AS
DETERMINED BY CONTROL BITS. IN THIS CASE, DATA IS CLOCKED OUT OF SDO ON FALLING
EDGE OF SCLK. TIMING AS ABOVE, WITH SCLK INVERTED.
t4
t5
t6
t2
t1
t3
t7
t8
t9
DB15 (N)
DB0 (N)
SYNC
04
58
8-
00
3
Figure 3. Daisy-Chain Timing Diagram
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