84052IBZ 데이터 시트보기 (PDF) - Renesas Electronics

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84052IBZ

Low Voltage, Single and Dual Supply, 8-to-1 Multiplexer, Dual 4-to-1 Multiplexer and a Triple SPDT Analog Switch

Renesas Electronics 

ISL84051, ISL84052, ISL84053

Test Circuits and Waveforms (Continued)

V+

C

V-

C

SIGNAL

GENERATOR

ANALYZER

RL

NO or NC

0V OR V+

ADDX

COM GND

0V OR V+

INH

V+

C

V-

C

rON = V1/1mA

NO or NC

VNX

1mA

V1

0V OR V+

ADDX

COM

GND INH

FIGURE 4. OFF ISOLATION TEST CIRCUIT

FIGURE 5. rON TEST CIRCUIT

V+

C

V-

C

SIGNAL

GENERATOR

0V OR V+

NOA or NCA COMA

ISL84052

AND

ADDX ISL84053

ANALYZER

RL

COMB

NOB or NCB

GND INH

50Ω

NC

FIGURE 6. CROSSTALK TEST CIRCUIT

Detailed Description

The ISL84051, ISL84052, ISL84053 analog switches offer

precise switching capability from a bipolar ±2V to ±6V or a

single 2V to 12V supply with low on-resistance (60Ω) and high

speed operation (tON = 50ns, tOFF = 40ns). The devices are

especially well suited to portable battery powered equipment

thanks to the low operating supply voltage (2V), low power

consumption (3µW), low leakage currents (5nA max). 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

FN6047 Rev.10.00

May 16, 2011

IMPEDANCE

ANALYZER

V+

C

V-

C

NO OR NC

0V OR V+

ADDX

COM GND INH

FIGURE 7. CAPACITANCE TEST CIRCUIT

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

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

8). To prevent forward biasing these diodes, V+ and V- must be

applied before any input signals, and input signal voltages

must remain between V+ and V-. 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 1kΩ 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.

This method is not applicable for the signal path inputs.

Adding a series resistor to the switch input defeats the purpose

of using a low rON switch, so two small signal diodes can be

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