MAX4595

SINGLECHANNEL 10 W SPST ANALOG SWITCH

SLLS640 – JANUARY 2005

www.ti.com

8

PIN DESCRIPTION

PIN

NUMBER

NAME

DESCRIPTION

1

COM

Common

2

NC

Normally closed

3

GND

Digital ground

4

IN

Digital control pin to connect COM to NC

5

V+

Power supply

PARAMETER DESCRIPTION

SYMBOL

DESCRIPTION

VCOM

Voltage at COM

VNC

Voltage at NC

ron

Resistance between COM and NC 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

INC(OFF)

Leakage current measured at the NC port, with the corresponding channel (NC to COM) in the OFF state

INC(ON)

Leakage current measured at the NC port, with the corresponding channel (NC 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 NC) in the OFF state

ICOM(ON)

Leakage current measured at the COM port, with the corresponding channel (COM to NC) in the ON state and the output (NC)

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 NC) 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 NC) 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 (NC 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.

CNC(OFF)

Capacitance at the NC port when the corresponding channel (NC to COM) is OFF

CNC(ON)

Capacitance at the NC port when the corresponding channel (NC to COM) is ON

CCOM(OFF)

Capacitance at the COM port when the corresponding channel (COM to NC) is OFF

CCOM(ON)

Capacitance at the COM port when the corresponding channel (COM to NC) 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 (NC 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