Serially-Controlled Octal SPST Switches

ADG1414

Rev. 0

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FEATURES

SPI interface

Supports daisy-chain mode

9.5 Ω on resistance @ 25°C

1.6 Ω on-resistance flatness

Fully specified at ±15 V, +12 V, ±5 V

3 V logic-compatible inputs

Rail-to-rail operation

24-lead TSSOP and 24-lead 4 mm × 4 mm LFCSP

APPLICATIONS

Automatic test equipment

Data acquisition systems

Battery-powered systems

Sample-and-hold systems

Audio signal routing

Video signal routing

Communication systems

FUNCTIONAL BLOCK DIAGRAM

D8

SDO

D7

D6

D5

D4

D3

D2

D1

S8

S7

S6

S5

S4

S3

S2

S1

INPUT SHIFT

REGISTER

SCLK

DIN

SYNC

ADG1414

Figure 1.

GENERAL DESCRIPTION

The ADG1414 is a monolithic complementary metal-oxide

semiconductor (CMOS) device containing eight independently

selectable switches designed on an industrial CMOS (iCMOS®)

process. iCMOS is a modular manufacturing process combining

high voltage CMOS and bipolar technologies. iCMOS components

can tolerate high supply voltages while providing increased perfor-

mance, dramatically lower power consumption, and reduce the

package size.

The ADG1414 is a set of octal SPST (single-pole, single-throw)

switches controlled via a 3-wire serial interface. On resistance is

closely matched between switches and is very flat over the full

signal range. Each switch conducts equally well in both direc-

tions and the input signal range extends to the supplies.

Data is written to these devices in the form of eight bits; each

bit corresponds to one channel.

The ADG1414 utilizes a versatile 3-wire serial interface that

operates at clock rates of up to 50 MHz and is compatible with

standard SPI, QSPI™, MICROWIRE™, and DSP interface

standards. The output of the shift register, SDO, enables a

number of these parts to be daisy chained.

On power-up, all switches are in the off condition, and the

internal registers contain all zeros.

PRODUCT HIGHLIGHTS

1.

50 MHz serial interface.

2.

9.5 Ω on resistance.

3.

1.6 Ω on-resistance flatness.

4.

24-lead TSSOP and 4 mm × 4 mm LFCSP packages.