
SCDS185A JANUARY 2005 REVISED JANUARY 2005
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PIN DESCRIPTION
PIN
NUMBER
NAME
DESCRIPTION
1
NO
Normally open
2
COM
Common
3
GND
Digital ground
4
IN
Digital control pin to connect COM to NO
5
V+
Power supply
PARAMETER DESCRIPTION
SYMBOL
DESCRIPTION
VCOM
VNO
ron
ron(flat)
INO(OFF)
Voltage at COM
Voltage at NO
Resistance between COM and NO ports when the channel is ON
Difference between the maximum and minimum value of ron in a channel over the specified range of conditions
Leakage current measured at the NO port, with the corresponding channel (NO to COM) in the OFF state
INO(ON)
Leakage current measured at the NO port, with the corresponding channel (NO to COM) in the ON state and the output (COM)
open
ICOM(OFF)
Leakage current measured at the COM port, with the corresponding channel (COM to NO) in the OFF state
ICOM(ON)
Leakage current measured at the COM port, with the corresponding channel (COM to NO) in the ON state and the output (NO)
open
VIH
VIL
VI
IIH, IIL
Minimum input voltage for logic high for the control input (IN)
Maximum input voltage for logic low for the control input (IN)
Voltage at the control input (IN)
Leakage current measured at the control input (IN)
tON
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 or NO) signal when the switch is turning ON.
tOFF
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 or NO) signal when the switch is turning OFF.
QC
Charge injection is a measurement of unwanted signal coupling from the control (IN) input to the analog (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, QC = CL
×
VCOM, CL is the load capacitance and
VCOM is the change in analog output voltage.
Capacitance at the NO port when the corresponding channel (NO to COM) is OFF
CNO(OFF)
CNO(ON)
CCOM(OFF)
CCOM(ON)
CI
Capacitance at the NO port when the corresponding channel (NO to COM) is ON
Capacitance at the COM port when the corresponding channel (COM to NO) is OFF
Capacitance at the COM port when the corresponding channel (COM to NO) is ON
Capacitance of IN
OISO
OFF isolation of the switch is a measurement of OFF-state switch impedance. This is measured in dB in a specific frequency,
with the corresponding channel (NO to COM) in the OFF state.
BW
Bandwidth of the switch. This is the frequency in which the gain of an ON channel is 3 dB below the DC gain.
THD
Total harmonic distortion is defined as the ratio of the root mean square (RMS) value of the second, third, and higher
harmonics to the magnitude of fundamental harmonic.
I+
I+
Static power-supply current with the control (IN) pin at V+ or GND
This is the increase in I+ for each control (IN) input that is at the specified voltage, rather than at V+ or GND.