High Voltage Latch-Up Proof,

4-/8-Channel Multiplexers

ADG5408/ADG5409

Rev. 0

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FEATURES

Latch-up proof

8 kV human body model (HBM) ESD rating

Low on resistance (13.5 Ω)

±9 V to ±22 V dual-supply operation

9 V to 40 V single-supply operation

48 V supply maximum ratings

Fully specified at ±15 V, ±20 V, +12 V, and +36 V

APPLICATIONS

Relay replacement

Automatic test equipment

Data acquisition

Instrumentation

Avionics

Audio and video switching

Communication systems

FUNCTIONAL BLOCK DIAGRAMS

ADG5408

S1

S8

D

ADG5409

S1A

S4B

DA

DB

S4A

S1B

1-OF-4

DECODER

1-OF-8

DECODER

A0

A1

EN

A0 A1 A2 EN

Figure 1.

GENERAL DESCRIPTION

The ADG5408/ADG5409 are monolithic CMOS analog multi-

plexers comprising eight single channels and four differential

channels, respectively. The ADG5408 switches one of eight

inputs to a common output, as determined by the 3-bit binary

address lines, A0, A1, and A2. The ADG5409 switches one of

four differential inputs to a common differential output, as

determined by the 2-bit binary address lines, A0 and A1.

An EN input on both devices enables or disables the device.

When EN is disabled, all channels switch off. The on-resistance

profile is very flat over the full analog input range, which ensures

good linearity and low distortion when switching audio signals.

High switching speed also makes the parts suitable for video

signal switching.

Each switch conducts equally well in both directions when on,

and each switch has an input signal range that extends to the

power supplies. In the off condition, signal levels up to the

supplies are blocked.

power supply is generated internally by an on-chip voltage

generator.

PRODUCT HIGHLIGHTS

1.

Trench isolation guards against latch-up. A dielectric trench

separates the P and N channel transistors thereby preventing

latch-up even under severe overvoltage conditions.

2.

3.

Dual-supply operation. For applications where the analog

signal is bipolar, the ADG5408/ADG5409 can be operated

from dual supplies up to ±22 V.

4.

Single-supply operation. For applications where the analog

signal is unipolar, the ADG5408/ADG5409 can be operated

from a single rail power supply up to 40 V.

5.

6.