參數(shù)資料
型號(hào)： X9522V20I-B
廠商： INTERSIL CORP
元件分類： 數(shù)字電位計(jì)
英文描述： Laser Diode Control for Fiber Optic Modules
中文描述： DIGITAL POTENTIOMETER, PDSO20
封裝： PLASTIC, TSSOP-20
文件頁數(shù)： 21/29頁
文件大小： 486K
代理商： X9522V20I-B
21
FN8208.0
March 10, 2005
A.C. CHARACTERISTICS (See Figure 20, Figure 21, Figure 22)
A.C. TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Levels
Output Load
NONVOLATILE WRITE CYCLE TIMING
CAPACITANCE (T
A
= 25°C, F = 1.0 MHZ, VCC / V1 = 5V)
Notes: 1. Typical values are for TA = 25°C and Vcc / V1 = 5.0V
Notes: 2. Cb = total capacitance of one bus line in pF.
Notes: 3. Over recommended operating conditions, unless otherwise specified
Notes: 4. t
WC
is the time from a valid STOP condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It is
the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.
Notes: 5. This parameter is not 100% tested.
Symbol
f
SCL
t
IN(5)
t
AA(5)
t
BUF(5)
t
LOW
t
HIGH
t
SU:STA
t
HD:STA
t
SU:DAT
t
HD:DAT
t
SU:STO
t
DH(5)
t
R(5)
t
F(5)
t
SU:WP
t
HD:WP
Cb
(5)
Parameter
400kHz
Min
Max
Units
SCL Clock Frequency
Pulse width Suppression Time at inputs
0
400
kHz
50
ns
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
SCL LOW to SDA Data Out Valid
0.1
0.9
Time the bus free before start of new transmission
1.3
Clock LOW Time
1.3
Clock HIGH Time
0.6
Start Condition Setup Time
0.6
Start Condition Hold Time
0.6
Data In Setup Time
100
ns
μ
s
μ
s
Data In Hold Time
0
Stop Condition Setup Time
0.6
Data Output Hold Time
50
ns
SDA and SCL Rise Time
20 +.1Cb
(2)
300
ns
SDA and SCL Fall Time
20 +.1Cb
(2)
300
ns
μ
s
μ
s
WP Setup Time
0.6
WP Hold Time
0
Capacitive load for each bus line
400
pF
0.1Vcc to 0.9Vcc
10ns
0.5Vcc
See Figure 18
Symbol
Parameter
Min.
Typ.(1)
Max.
Units
t
WC(4)
Nonvolatile Write Cycle Time
5
10
ms
Symbol
Parameter
Max
Units
Test Conditions
C
OUT
(5)
Output Capacitance (SDA, V2RO, V3RO)
8
pF
V
OUT
= 0V
C
IN
(5)
Input Capacitance (SCL, WP)
6
pF
V
IN
= 0V
X9522
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