TS5A4594

SINGLECHANNEL 8 W SPST ANALOG SWITCH

SCDS179 – FEBRUARY 2005

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9

PIN DESCRIPTION

PIN

NUMBER

NAME

DESCRIPTION

1

COM

Common

2

NO

Normally open

3

GND

Digital ground

4

IN

Digital control pin to connect COM to NO

5

V+

Power supply

PARAMETER DESCRIPTION

SYMBOL

DESCRIPTION

VCOM

Voltage at COM

VNO

Voltage at NO

ron

Resistance between COM and NO ports when the channel is ON

ron(flat)

Difference between the maximum and minimum value of ron in a channel over the specified range of conditions

INO(OFF)

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

Minimum input voltage for logic high for the control input (IN)

VIL

Maximum input voltage for logic low for the control input (IN)

VI

Voltage at the control input (IN)

IIH, IIL

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.

CNO(OFF)

Capacitance at the NO port when the corresponding channel (NO to COM) is OFF

CNO(ON)

Capacitance at the NO port when the corresponding channel (NO to COM) is ON

CCOM(OFF)

Capacitance at the COM port when the corresponding channel (COM to NO) is OFF

CCOM(ON)

Capacitance at the COM port when the corresponding channel (COM to NO) is ON

CI

Capacitance of control input (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 describes the signal distortion caused by the analog switch. This is defined as the ratio of root mean

square (RMS) value of the second, third, and higher harmonic to the absolute magnitude of the fundamental harmonic.

I+

Static power-supply current with the control (IN) pin at V+ or GND