Datasheet


 W   
 
SCDS183A – JANUARY 2005 – REVISED APRIL 2006
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14
PIN DESCRIPTION
PIN
NUMBER
NAME DESCRIPTION
1 COM Common
2 EN Chip enable (active low)
3 GND Digital ground
4 GND Digital ground
5 IN Digital control to connect COM to NC or NO
6 NO Normally open
7 NC Normally closed
8 V
+
Power supply
PARAMETER DESCRIPTION
SYMBOL DESCRIPTION
V
COM
Voltage at COM
V
NC
Voltage at NC
V
NO
Voltage at NO
r
on
Resistance between COM and NC or COM and NO ports when the channel is ON
∆r
on
Difference of r
on
between channels in a specific device
r
on(flat)
Difference between the maximum and minimum value of r
on
in a channel over the specified range of conditions
I
NC(OFF)
Leakage current measured at the NC port, with the corresponding channel (NC to COM) in the OFF state
I
NO(OFF)
Leakage current measured at the NO port, with the corresponding channel (NO to COM) in the OFF state
I
NC(ON)
Leakage current measured at the NC port, with the corresponding channel (NC to COM) in the ON state and the output (COM)
open
I
NO(ON)
Leakage current measured at the NO port, with the corresponding channel (NO to COM) in the ON state and the output (COM)
open
I
COM(OFF)
Leakage current measured at the COM port, with the corresponding channel (COM to NO or COM to NC) in the OFF state and
the output (NC or NO) open
I
COM(ON)
Leakage current measured at the COM port, with the corresponding channel (COM to NO or COM to NC) in the ON state and
the output (NC or NO) open
V
IH
Minimum input voltage for logic high for the control input (IN, EN)
V
IL
Maximum input voltage for logic low for the control input (IN, EN)
V
I
Voltage at the control input (IN, EN)
I
IH
, I
IL
Leakage current measured at the control input (IN, EN)
t
ON
Turn-on time for the switch. This parameter is measured under the specified range of conditions and by the propagation delay
between the digital control (IN) signal and analog output (COM, NC, or NO) signal when the switch is turning ON.
t
OFF
Turn-off time for the switch. This parameter is measured under the specified range of conditions and by the propagation delay
between the digital control (IN) signal and analog output (COM, NC, or NO) signal when the switch is turning OFF.
Q
C
Charge injection is a measurement of unwanted signal coupling from the control (IN) input to the analog (NC, NO, or COM)
output. This is measured in coulomb (C) and measured by the total charge induced due to switching of the control input.
Charge injection, Q
C
= C
L
× ∆V
COM
, C
L
is the load capacitance and ∆V
COM
is the change in analog output voltage.