DS1800 Dallas Semiconducotr, DS1800 Datasheet - Page 9

• Manufacturer Part Number: DS1800
• Description: Dual Inverting Log Gain/Attenuator
• Manufacturer: Dallas Semiconducotr

AC ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICS
PUSHBUTTON INPUTS
NOTES:
1. All voltages are referenced to ground.
2. Valid for V
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
6. Inter–Channel Matching is used to determine the relative voltage difference in dB between the same
CLK Frequency
Width of CLK Pulse
Data Setup Time
Data Hold Time
Propagation Delay Time
CLK Rise Time
PARAMETER
Single Pulse Input
Repetitive Input Pulse High Time
Continuous Input Pulse
RST
RST
RST
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%.
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.
Low to High Level
High to Low Level
Slow Mode
Fast Mode
Slow Mode
Fast Mode
High to Clock Input High
Low to Clock Input High
Inactive
PARAMETER
CC
= 5V only.
SYMBOL
t
f
t
t
t
t
t
CDH
t
t
HLT
CLK
PLH
BLT
CH
DC
CC
CB
SYMBOL
t
t
t
CPW
HPW
CCP
9
MIN
200
DC
50
30
10
50
50
of
14
MIN
0.8
50
50
1
1
(-40 C to +85 C; V
(-40 C to +85 C; V
TYP
TYP
MAX
MAX
10
50
50
800
800
DC
CC
CC
UNITS
UNITS
=2.7V to 5.5V)
=2.7V to 5.5V)
MHz
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
s
NOTES
NOTES
3,5,11
3,5,11
3,5,11
DS1800