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TMUX1109
SCDS406 –DECEMBER 2018
TMUX1109 5 V, ±2.5 V, Low-Leakage-Current, 4:1, 2-Channel Precision Multiplexer
1 Features
3 Description
The TMUX1109 is a precision complementary metal-
oxide semiconductor (CMOS) multiplexer (MUX). The
TMUX1109 offers differential 4:1 or dual 4:1 single-
ended channels. Wide operating supply of 1.08 V to
5.5 V allows for use in a broad array of applications
from medical equipment to industrial systems. The
device supports bidirectional analog and digital
signals on the source (Sx) and drain (D) pins ranging
from GND to VDD. All logic inputs have 1.8 V logic
compatible thresholds, ensuring both TTL and CMOS
logic compatibility when operating in the valid supply
voltage range. Fail-Safe Logic circuitry allows
voltages on the control pins to be applied before the
supply pin, protecting the device from potential
damage.
1
•
Single Supply Range: 1.08 V to 5.5 V
Dual Supply Range: ±2.75 V
Low Leakage Current: 3 pA
Low Charge Injection: 1 pC
Low On-Resistance: 1.8 Ω
-40°C to +125°C Operating Temperature
1.8 V Logic Compatible
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Fail-Safe Logic
Rail to Rail Operation
Bidirectional Signal Path
Break-Before-Make Switching
ESD Protection HBM: 2000 V
The TMUX1109 is part of the precision switches and
multiplexers family of devices. These devices have
very low on and off leakage currents and low charge
injection, allowing them to be used in high precision
measurement applications. A low supply current of
8nA and small package options enable use in
portable applications.
2 Applications
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Ultrasound Scanners
Patient Monitoring & Diagnostics
Optical Networking
Optical Test Equipment
Remote Radio Unit
Device Information(1)
Wired Networking
PART NUMBER
PACKAGE
TSSOP (16)
QFN (16)
BODY SIZE (NOM)
5.00 mm × 4.40 mm
2.60 mm x 1.80 mm
ATE Test Equipment
TMUX1109
Factory Automation and Industrial Controls
Programmable Logic Controllers (PLC)
Analog Input Modules
(1) For all available packages, see the package option addendum
at the end of the data sheet.
SONAR Receivers
Motor Drive
Servo Drive Position Feedback
Application Example
Block Diagram
REFby2
TMUX1109
1µF
4 Channels per ADC
REFby2
(2.048V output)
S1A
S2A
S3A
S4A
Cf1 3pF
INN_x
Rg1 1kΩ
Rfil1 30.1Ω
SxA
Rf1 1kΩ
+5V
REFby2
2.048V
DA
Riso1
AINP_A
DA
15pF
15pF
10Ω
4:1
-
Cfil
150pF
Vocm
+
-
ADC_A
Differential
MUX
+
100nF
Riso2
10Ω
AINM_A
DB
Rfil2 30.1Ω
Rf2 1kΩ
SxB
S1B
S2B
S3B
S4B
INP_x
INN_x
Rg2 1kΩ
Cf2 3pF
ADS9224R
Dual,
Simultaneous-
Sampling
Low-Latency
SAR ADC
THS4551 (4x)
DB
TMUX1109
Cf1 3pF
Rg1 1kΩ
Rfil1 30.1Ω
SxA
Rf1 1kΩ
REFby2
2.048V
+5V
Riso1
10Ω
15pF
15pF
AINP_B
DA
4:1
-
1-OF-4
DECODER
Cfil
150pF
Vocm
+
-
Differential
MUX
ADC_B
+
100nF
Riso2
10Ω
DB
AINM_B
Rfil2 30.1Ω
Rf2 1kΩ
SxB
Rg2 1kΩ
Cf2 3pF
INP_x
THS4551 (4x)
A0
A1
EN
TMUX1109
4 Channels per ADC
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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