High Voltage Latch-Up Proof,
4-/8-Channel Multiplexers
Data Sheet
ADG5408/ADG5409
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Latch-up proof
ADG5408
ADG5409
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
S1
S1A
S4A
DA
DB
D
S1B
S4B
Fully specified at 15 V, 20 V, +12 V, and +36 V
V
SS to VDD analog signal range
S8
APPLICATIONS
1-OF-8
DECODER
1-OF-4
DECODER
Relay replacement
Automatic test equipment
Data acquisition
A0 A1 A2 EN
A0 A1 EN
Figure 1.
Instrumentation
Avionics
Audio and video switching
Communication systems
GENERAL DESCRIPTION
The ADG5408/ADG5409 do not have VL pins; rather, the logic
power supply is generated internally by an on-chip voltage
generator.
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.
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.
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.
2. Low RON
.
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.
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.
5. 3 V logic compatible digital inputs: VINH = 2.0 V, VINL = 0.8 V.
6. No VL logic power supply required.
Rev. B
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