MAX4745ELB+T Maxim Integrated Products, MAX4745ELB+T Datasheet

IC SWITCH DUAL SPDT 10UDFN

MAX4745ELB+T

Manufacturer Part Number
MAX4745ELB+T
Description
IC SWITCH DUAL SPDT 10UDFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX4745ELB+T

Function
Audio Switch
Circuit
2 x SPDT
On-state Resistance
950 mOhm
Voltage Supply Source
Single Supply
Voltage - Supply, Single/dual (±)
1.8 V ~ 5.5 V
Current - Supply
0.3µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-µDFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MAX4745ELB+T
MAX4745ELB+TTR
The MAX4744/MAX4744H/MAX4745/MAX4745H dual
SPDT (single pole/double throw) audio switches feature
negative signal capability that allows signals as low as
V
log switches have a low on-resistance, low supply cur-
rent, and operate from a single +1.8V to +5.5V supply.
The MAX4744/MAX4744H have internal shunt resistors
that automatically discharge the capacitance at the nor-
mally open (NO) and normally closed (NC) terminals
when they are not connected. This reduces click-and-pop
sounds that occur when switching audio signals between
pre-charged points. A break-before-make feature further
reduces popping. The MAX4744/MAX4745 control the
switches with two control bits CB1 and CB2. The
MAX4744H/MAX4745H have one control bit to switch
both switches and an enable input EN to put the switches
in a high-impedance mode. The MAX4744H/MAX4745H
also have an internal protection network against voltages
applied to COM_ when V
These devices are available in a space-saving 10-pin
µDFN (2mm x 2mm) package and operate over the
-40°C to +85°C extended temperature range.
19-0563; Rev 0; 5/06
Note: All devices are specified over the -40°C to +85°C operating temperature range.
+ Denotes lead-free package.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX4744ELB+T
MAX4744HELB+T
MAX4745ELB+T
MAX4745HELB+T
CC
- 5.5V to pass through without distortion. These ana-
Speaker Switching
Power Routing
Cellular Phones
MP3 Players
PDAs and other Handheld Devices
Notebook Computers
PART
Low-Voltage, Dual SPDT, Audio Clickless
________________________________________________________________ Maxim Integrated Products
Switches With Negative Rail Capability
General Description
CC
= 0V.
10 µDFN-10
10 µDFN-10
10 µDFN-10
10 µDFN-10
PACKAGE
PIN-
Applications
MARK
+AAG
+AAH
+AAF
+AAI
TOP
♦ Distortion-Free Negative Signal Throughput Down
♦ Internal Shunt Resistor Reduces Click/Pop
♦ 0.6Ω (typ) Low On-Resistance
♦ 0.1Ω (max) Channel-to-Channel Matching
♦ 0.55Ω (max) On-Resistance Flatness
♦ +1.8V to +5.5V Single-Supply Voltage
♦ 0.01% (typ) Total Harmonic Distortion
♦ -75dB (typ) Crosstalk (100kHz)
♦ -68dB (typ) Off-Isolation (100kHz)
♦ Available in 10-pin µDFN Package (2mm x 2mm)
CLICKLESS
TOP VIEW
to V
(MAX4744/MAX4744H)
Yes
Yes
No
No
+
CC
COM1
CB1
10
1
- 5.5V
(2mm x 2mm)
NC1
NO1
9
2
MAX4744
MAX4745
μDFN
GND
V
CC
8
3
COM PROTECTION
NC2
NO2
7
4
Ordering Information
COM2
CB2
6
5
Yes
Yes
No
No
Pin Configurations
+
COM1
EN
10
1
(2mm x 2mm)
NC1
NO1
9
MAX4744H
MAX4745H
2
μDFN
V
GND
CC
8
3
Features
PKG CODE
NC2
NO2
L1022-1
L1022-1
L1022-1
L1022-1
7
4
COM2
CB0
6
5
1

Related parts for MAX4745ELB+T

MAX4745ELB+T Summary of contents

Page 1

... PIN- PART PACKAGE MAX4744ELB+T 10 µDFN-10 MAX4744HELB+T 10 µDFN-10 MAX4745ELB+T 10 µDFN-10 MAX4745HELB+T 10 µDFN-10 Note: All devices are specified over the -40°C to +85°C operating temperature range. + Denotes lead-free package. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’ ...

Page 2

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) , CB_, EN ........................................................-0.3V to +6. NC_, NO_ ...........................................(V COM_ (MAX4744/MAX4745).............(V COM_ (MAX4744H/MAX4745H)......................................(Note 1) Continuous Current NO_, NC_, COM_. ..........................±300mA ...

Page 3

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL COM_ Leakage Under Protection I ...

Page 4

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL DIGITAL INPUTS (CB_, EN) Input-Logic ...

Page 5

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability (V = +3.3V +25°C, unless otherwise noted NC_ TURN-ON/NO_ TURN-OFF TIME vs. SUPPLY VOLTAGE 800 700 600 NC_ TURN-ON TIME 500 400 NO_ TURN-OFF TIME 300 ...

Page 6

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability (V = +3.3V +25°C, unless otherwise noted LEAKAGE CURRENT vs. TEMPERATURE 1000 100 10 1.0 0.1 -40 -15 10 TEMPERATURE (°C) OFF-ISOLATION vs. FREQUENCY -40 -50 ...

Page 7

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability PIN NAME MAX4744/ MAX4744H/ MAX4745 MAX4745H 1 — CB1 EN — NO1 3 3 GND 4 4 NO2 5 — CB2 — 5 CB0 6 6 COM2 ...

Page 8

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability MAX4744 NC1 SWITCH 1 NO1 SHUNT SWITCH NC2 SWITCH 2 NO2 MAX4745 NC1 SWITCH 1 NO1 NC2 SWITCH 2 NO2 Figure 1. Functional Diagram Analog Signal Levels These devices pass ...

Page 9

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability MAX4744/MAX4745/ MAX4744H/MAX4745H NO_ NC_ NO_ OR NC_ CB_ GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE OUT N_ R ...

Page 10

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability MAX4744/MAX4745/ MAX4744H/MAX4745H COM_ GND Figure 4. Charge Injection V CC 10nF CB_ CC COM_ V CC MAX4744 MAX4744H NC_ GND MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AND OPEN ...

Page 11

Low-Voltage, Dual SPDT, Audio Clickless Switches With Negative Rail Capability V CC 10nF COM_ CAPACITANCE ANALYZER NC_ 1MHz NO_ GND Figure 6. Channel Off-/On-Capacitance Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ MAX4744 MAX4744H MAX4745 MAXIM MAX4745H Direct Drive™ CB_ ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products ...

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