ISL43210IH-T datasheet(8/13 Pages) INTERSIL

Nome de Peças	ISL43210IH-T

Descrição Electrónicos	Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches

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Fabricante Electrônico	INTERSIL [Intersil Corporation]

Página de início	http://www.intersil.com/cda/home

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8

FN6033.4

April 12, 2005

Detailed Description

The ISL43120–ISL43122 and ISL43210 bidirectional, dual

analog switches offer precise switching capability from a

single 2.7V to 12V supply with low on-resistance (19

Ω) and

high speed operation (tON = 28ns, tOFF = 20ns). The devices

are especially well suited to portable battery powered

equipment thanks to the low operating supply voltage (2.7V),

low power consumption (5

µW), low leakage currents (100pA

max), and the tiny SOT-23 packaging. High frequency

applications also benefit from the wide bandwidth, and the

very high off isolation and crosstalk rejection.

Supply Sequencing And Overvoltage Protection

With any CMOS device, proper power supply sequencing is

required to protect the device from excessive input currents

which might permanently damage the IC. All I/O pins contain

ESD protection diodes from the pin to V+ and GND (see

Figure 8). To prevent forward biasing these diodes, V+ must

be applied before any input signals, and input signal

voltages must remain between V+ and GND. If these

conditions cannot be guaranteed, then one of the following

two protection methods should be employed.

Logic inputs can easily be protected by adding a 1k

Ω

resistor in series with the input (see Figure 8). The resistor

limits the input current below the threshold that produces

permanent damage, and the sub-microamp input current

produces an insignificant voltage drop during normal

operation.

Adding a series resistor to the switch input defeats the

purpose of using a low RON switch, so two small signal

diodes can be added in series with the supply pins to provide

overvoltage protection for all pins (see Figure 8). These

additional diodes limit the analog signal from 1V below V+ to

1V above GND. The low leakage current performance is

unaffected by this approach, but the switch resistance may

increase, especially at low supply voltages.

Power-Supply Considerations

The ISL43XXX construction is typical of most CMOS analog

switches, except that they have only two supply pins: V+ and

GND. V+ and GND drive the internal CMOS switches and

set their analog voltage limits. Unlike switches with a 13V

maximum supply voltage, the ISL43XXX 15V maximum

supply voltage provides plenty of room for the 10% tolerance

of 12V supplies, as well as room for overshoot and noise

spikes.

The minimum recommended supply voltage is 2.7V. It is

important to note that the input signal range, switching times,

and on-resistance degrade at lower supply voltages. Refer

to the electrical specification tables and Typical Performance

curves for details.

FIGURE 6. CROSSTALK TEST CIRCUIT

FIGURE 7. CAPACITANCE TEST CIRCUIT

Test Circuits and Waveforms (Continued)

0V or 2.4V

ANALYZER

V+

C

NO1 or NC1

SIGNAL

GENERATOR

RL

GND

IN1

COM1

IN2

50

Ω

0V or VINH

NC

COM2

NO2 or NC2

V+

C

GND

NO or NC

COM

INX

IMPEDANCE

ANALYZER

0V or VINH

FIGURE 8. OVERVOLTAGE PROTECTION

GND

VCOM

VNO or NC

OPTIONAL PROTECTION

V+

INX

DIODE

OPTIONAL PROTECTION

DIODE

OPTIONAL

PROTECTION

RESISTOR

ISL43120, ISL43121, ISL43122, ISL43210

Nº de peça semelhante - ISL43210IH-T

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Intersil Corporation	ISL43210IH-T	394Kb / 13P	Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches
Intersil Corporation	ISL43210IH-T	304Kb / 12P	Low-Voltage, Single Supply, Single SPDT Analog Switch
Renesas Technology Corp	ISL43210IH-T	625Kb / 12P	Low-Voltage, Single Supply, Single SPDT Analog Switch

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Descrição semelhante - ISL43210IH-T

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Intersil Corporation	ISL43120	394Kb / 13P	Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches
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Intersil Corporation	ISL84541_0309	361Kb / 16P	Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches
Maxim Integrated Produc...	MAX4541	282Kb / 13P	Low-Voltage, Single-Supply Dual SPST/SPDT Analog Switches Rev 3; 8/02
Intersil Corporation	ISL43120IHZ-T	433Kb / 13P	Low-Voltage, Single Supply, Dual SPST Analog Switches August 17, 2015
Renesas Technology Corp	ISL43120	821Kb / 13P	Low-Voltage, Single Supply, Dual SPST Analog Switches

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