參數(shù)資料
型號(hào): DS1800
英文描述: Dual Inverting Log Gain/Attenuator
中文描述: 雙反向登錄增益/衰減器
文件頁(yè)數(shù): 9/14頁(yè)
文件大?。?/td> 428K
代理商: DS1800
DS1800
9
of
14
AC ELECTRICAL CHARACTERISTICS
PARAMETER
(-40
°
C to +85
°
C; V
CC
=2.7V to 5.5V)
TYP
MAX
SYMBOL
MIN
UNITS
NOTES
CLK Frequency
f
CLK
DC
10
MHz
Width of CLK Pulse
t
CH
50
ns
Data Setup Time
t
DC
30
ns
Data Hold Time
t
CDH
10
ns
Propagation Delay Time
Low to High Level
High to Low Level
t
PLH
50
ns
RST
High to Clock Input High
t
CC
50
ns
RST
Low
to Clock Input High
t
HLT
50
ns
CLK Rise Time
t
CB
50
ns
RST
Inactive
t
BLT
200
ns
AC ELECTRICAL CHARACTERISTICS
PUSHBUTTON INPUTS
PARAMETER
(-40
°
C to +85
°
C; V
CC
=2.7V to 5.5V)
MIN
TYP
MAX
SYMBOL
UNITS
NOTES
Single Pulse Input
Slow Mode
Fast Mode
Repetitive Input Pulse High Time
Slow Mode
Fast Mode
Continuous Input Pulse
t
CPW
1
50
800
ms
μs
3,5,11
t
HPW
1
50
0.8
800
ms
μs
s
3,5,11
t
CCP
DC
3,5,11
NOTES:
1.
All voltages are referenced to ground.
2.
Valid for V
CC
= 5V only.
3.
Both PxA and PxG inputs are internally pulled up with a 50K
resistance.
4.
Capacitance values apply at 25°C.
5.
Input pulse width is the minimum time required for an input to cause an increment or decrement of
wiper position. If the PxA or PxG inputs are held active for longer than 0.8 seconds, subsequent
increments or decrements will occur at intervals of 25 ms. Timing tolerances for pushbutton control
are specified at 35%.
6.
Inter–Channel Matching is used to determine the relative voltage difference in dB between the same
position on each potentiometer. The DS1800 is specified for ±0.25 dB inter-channel matching from
position 0 to position 112 (+20 dB to –27 dB) and ±0.5 dB from position 113 to position 127.
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