AS1746 datasheet(1/2 Pages) AMSCO

Part #	AS1746

Description	0.5/0.6ohm, Low-Voltage, Dual SPDT Analog Switch

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Manufacturer	AMSCO [ams AG]

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AS1746

0.5/0.6

Ω, Low-Voltage, Dual SPDT Analog Switch

www.austriamicrosystems.com

Revision 1.03

1 - 15

Datasheet

1 General Description

The AS1746 is a low on-resistance (RON), low-voltage,

dual-single-pole/double-throw (SPDT) analog switch

designed to operate from a single +1.8 to +5.5V supply.

The device features a 0.5

Ω (max) RON for normally

closed (NC) switches and a 0.6

Ω (max) RON for nor-

mally open (NO) switches using a +2.7V supply.

The AS1746 features break-before-make switching

(2ns) with tON = 50ns and tOFF = 30ns (using a +2.7V

supply).

The digital logic inputs are 1.8V logic-compatible with

+2.7 to +3.3V supplies.

The AS1746 is available in a TDFN-10 (3x3mm) pack-

age and a WL-CSP-10 package.

Figure 1. AS1746 - Block Diagram

2 Key Features

!

Single Supply Operation: +1.8V to +5.5V

!

Normally Closed Switch RON: 0.45

Ω (+2.7V Supply)

!

Normally Open Switch RON: 0.55

Ω (+2.7V Supply)

!

RON Matching Between Channels: 0.06

Ω

!

RON Flatness Over Signal Range: 0.15

Ω

!

Supply Current: 50nA

!

Rail-to-Rail Signal Handling

!

1.8V Logic Compatibility

!

Low Crosstalk: -60dB (100kHz)

!

High Off-Isolation: -64dB (100kHz)

!

Total Harmonic Distortion: 0.025%

!

Ultra-Low Leakage Currents: 1nA (@ TAMB = +25ºC)

!

Package Types:

- TDFN-10 (3x3mm)

- WL-CSP-10

3 Applications

The device is ideal for audio headsets, MP3 players,

power routing switches, relay replacements, audio and

video signal routing, communications circuits, PCMCIA

cards, mobile phones, MODEMs, and any battery-oper-

ated equipment.

Truth Table

Switch shown for logic low input.

IN

NOx to

COM

NCx to

COM

Low

Off

On

High

On

Off

AS1746

4

IN1

3

COM1

2

NO1

1

V+

6GND

7

NC2

9COM2

10 NO2

5

NC1

8

IN2

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