Dual SPDT Negative Rail Analog Switches

8

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Test Circuits/Timing Diagrams (continued)

Pin Description

PIN

NAME

FUNCTION

A1

NO2

Analog Switch 2, Normally Open Terminal

A2

NEG

Negative Supply Voltage Output. Connect NEG to GND with a 3.3nF capacitor. Do not use NEG to

power any external circuitry.

A3

with a 0.1µF ceramic capacitor placed as close as possible to the device.

A4

NO1

Analog Switch 1, Normally Open Terminal

B1

COM2

Analog Switch 2, Common Terminal

B2

EN

Active-Low Enable Input. Drive

EN high to put switches in a high-impedance mode. Shunt click/pop

switches are not affected by the state of

EN. The MAX14505A/MAX14506 enter a low current state

when

EN is driven high.

B3, C3

GND

Ground

B4

COM1

Analog Switch 1, Common Terminal

C1

NC2

Analog Switch 2, Normally Closed Terminal

C2

CB

Control Bit Input. CB controls switch 1 and switch 2. See the Functional Diagram/Truth Table.

C4

NC1

Analog Switch 1, Normally Closed Terminal

GND

NC_ OR

NO_

COM_

MAX14504/

MAX14505/

MAX14505A/

MAX14506

CAPACITANCE

METER

CB

NEG

0.1

µF

f = 1MHz

Figure 3. Channel Off-/On-Capacitance