参数资料
型号: AD9520-1/PCBZ
厂商: Analog Devices Inc
文件页数: 6/80页
文件大小: 0K
描述: BOARD EVAL FOR AD9520-1
设计资源: Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers (CN0121)
Phase Coherent FSK Modulator (CN0186)
AD9520 Eval Brd Schematic
AD9520 BOM
标准包装: 1
主要目的: 计时,时钟发生器
嵌入式:
已用 IC / 零件: AD9520-1
主要属性: 12 LVPECL/24 CMOS 输出时钟发生器,带 2.5 GHz VCO
次要属性: SPI 和 I2C 兼容控制端口
已供物品: 板,线缆,CD,电源
产品目录页面: 776 (CN2011-ZH PDF)
相关产品: AD9520-1BCPZ-REEL7-ND - IC CLOCK GEN 2.5GHZ VCO 64LFCSP
AD9520-1BCPZ-ND - IC CLOCK GEN 2.5GHZ VCO 64LFCSP
AD9520-1
Data Sheet
Rev. A | Page 14 of 80
SERIAL CONTROL PORT—IC MODE
Table 14.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
SDA, SCL (WHEN INPUTTING DATA)
Input Logic 1 Voltage
0.7 × VS
V
Input Logic 0 Voltage
0.3 × VS
V
Input Current with an Input Voltage Between
0.1 × VS and 0.9 × VS
10
+10
A
Hysteresis of Schmitt Trigger Inputs
0.015 × VS
V
Pulse Width of Spikes That Must Be Suppressed by
the Input Filter, tSPIKE
50
ns
SDA (WHEN OUTPUTTING DATA)
Output Logic 0 Voltage at 3 mA Sink Current
0.4
V
Output Fall Time from VIHMIN to VILMAX with a Bus
Capacitance from 10 pF to 400 pF
20 + 0.1 Cb
250
ns
Cb = capacitance of one bus line in pF
TIMING
Note that all I2C timing values are
referred to VIHMIN (0.3 × VS) and
VILMAX levels (0.7 × VS)
Clock Rate (SCL, fI2C)
400
kHz
Bus Free Time Between a Stop and Start Condition, tIDLE
1.3
s
Setup Time for a Repeated Start Condition, tSET; STR
0.6
s
Hold Time (Repeated) Start Condition, tHLD; STR
0.6
s
After this period, the first clock pulse
is generated
Setup Time for Stop Condition, tSET; STP
0.6
s
Low Period of the SCL Clock, tLOW
1.3
s
High Period of the SCL Clock, tHIGH
0.6
s
SCL, SDA Rise Time, tRISE
20 + 0.1 Cb
300
ns
SCL, SDA Fall Time, tFALL
20 + 0.1 Cb
300
ns
Data Setup Time, tSET; DAT
120
ns
This is a minor deviation from the
original IC specification of 100 ns
minimum
Data Hold Time, tHLD; DAT
140
880
ns
This is a minor deviation from the
original IC specification of 0 ns
minimum1
Capacitive Load for Each Bus Line, Cb
400
pF
1
According to the original I2C specification, an I2C master must also provide a minimum hold time of 300 ns for the SDA signal to bridge the undefined region of the SCL
falling edge.
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