參數(shù)資料
型號: AD9522-2/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 5/84頁
文件大小: 0K
描述: BOARD EVAL FOR AD9522-2 CLK GEN
設計資源: AD9522 Eval Board Schematic
AD9522 BOM
標準包裝: 1
主要目的: 計時,時鐘發(fā)生器
嵌入式:
已用 IC / 零件: AD9522-2
主要屬性: 12 LVDS/24 CMOS 輸出,2.2 GHz VCO
次要屬性: I²C & SPI 接口
已供物品:
AD9522-2
Rev. 0 | Page 13 of 84
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
μA
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 refer
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
μs
Setup Time for a Repeated Start Condition, tSET; STR
0.6
μs
Hold Time (Repeated) Start Condition (After This Period,
the First Clock Pulse Is Generated), tHLD; STR
0.6
μs
Setup Time for Stop Condition, tSET; STP
0.6
μs
Low Period of the SCL Clock, tLOW
1.3
μs
High Period of the SCL Clock, tHIGH
0.6
μs
SCL, SDA Rise Time, tRISE
20 + 0.1 Cb
300
ns
Cb = capacitance of one bus line in pF
SCL, SDA Fall Time, tFALL
20 + 0.1 Cb
300
ns
Cb = capacitance of one bus line in pF
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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