MAX4850 Maxim, MAX4850 Datasheet

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MAX4850

Manufacturer Part Number
MAX4850
Description
The MAX4850/MAX4850H/MAX4852/MAX4852H family of dual SPDT (single-pole/double-throw) switches operate from a single +2V to +5
Manufacturer
Maxim
Datasheet
The MAX4850/MAX4850H/MAX4852/MAX4852H family
of dual SPDT (single-pole/double-throw) switches oper-
ate from a single +2V to +5.5V supply and can handle
signals greater than the supply rail. These switches fea-
ture low 3.5Ω or 3.5Ω/7Ω on-resistance with low on-
capacitance, making them ideal for switching audio
and data signals.
The MAX4850/MAX4850H are configured with two
SPDT switches and feature two comparators for head-
phone detection or mute/send key functions. The
MAX4852 has two SPDT switches with no comparators
for low 1µA supply current.
For over-rail applications, these devices offer either the
pass-through or high-impedance option. For the
MAX4850/MAX4852, the signal (up to 5.5V) passes
through the switch without distortion even when the posi-
tive supply rail is exceeded. For the MAX4850H/
MAX4852H, the switch input becomes high impedance
when the input signal exceeds the supply rail.
The MAX4850/MAX4850H/MAX4852/MAX4852H are
available in the space-saving (3mm x 3mm), 16-pin
TQFN package and operate over the extended temper-
ature range of -40°C to +85°C.
19-3375; Rev 0; 7/04
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
USB Switching
Audio-Signal Routing
Cellular Phones
Notebook Computers
PDAs and Other Handheld Devices
________________________________________________________________ Maxim Integrated Products
COUT1
COUT2
NC1
NO1
NC2
NO2
General Description
MAX4850H
MAX4850
3.5Ω
3.5Ω
V
V
CC
3
CC
3
Applications
Dual SPDT Analog Switches with
COM1
IN1
IN2
COM2
CIN1
CIN2
NC1
NO1
NC2
NO2
Over-Rail Signal Handling
MAX4852H
MAX4852
3.5Ω
3.5Ω
♦ USB 2.0 Full Speed (12MB) and USB 1.1 Signal
♦ Switch Signals Greater than V
♦ 0.1ns Differential Skew
♦ 3.5Ω/7Ω On-Resistance
♦ 135MHz -3dB Bandwidth
♦ +2V to +5.5V Supply Range
♦ 1.8V Logic Compatible
♦ Low Supply Current
♦ Available in a Space-Saving (3mm x 3mm),
*EP = Exposed paddle.
Pin Configurations and Selector Guide appear at end of
data sheet.
MAX4850ETE
MAX4850HETE
MAX4852ETE
MAX4852HETE
Switching Compliant
1µA (MAX4852)
5µA (MAX4850)
10µA (MAX4850H/MAX4852H)
16-Pin TQFN Package
PART
COM1
IN1
IN2
COM2
Block Diagrams/Truth Table
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
SWITCHES SHOWN FOR
LOGIC 0 INPUT
IN_
0
1
MAX4850_
MAX4852_
NO_
OFF
ON
NC_
OFF
ON
PIN-PACKAGE
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
CC
Features
MARK
TOP
ABU
ACA
ABV
ABZ
1

Related parts for MAX4850

MAX4850 Summary of contents

Page 1

... For the MAX4850/MAX4852, the signal (up to 5.5V) passes through the switch without distortion even when the posi- tive supply rail is exceeded. For the MAX4850H/ MAX4852H, the switch input becomes high impedance when the input signal exceeds the supply rail. ...

Page 2

... D+ and D- USB signals with a guaran- teed skew of less than 1ns (see Figure 1), as measured from 50% of the input signal to 50% of the output signal. The MAX4850_ feature a comparator that can be used for headphone or mute detection. The comparator threshold is internally generated to be approximately 1 ...

Page 3

... Dual SPDT Analog Switches with Over-Rail Signal Handling MAX4850_ V CC MAX4852_ V CC NO_ V NO IN_ GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE OUT Figure 1. Switching Time TxD+ R TxD 39Ω 50pF DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS. ...

Page 4

... Figure 4. Charge Injection +5V 10nF IN_ CC MAX4850_ MAX4852_ NC1 GND 50Ω MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF", NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON", NO_ OR NC_ TERMINAL ON EACH SWITCH. ...

Page 5

... Figure 6. Channel Off-/On-Capacitance MAX4850_ V CC NO_ COUT_ CIN_ V CIN_ GND Figure 7. Comparator Switching Time 14 ______________________________________________________________________________________ V CC 10nF V CC COM_ MAX4850_ MAX4852_ IN NC_ OR NO_ GND V + 100mV TH COMPARATOR INPUT (V ) CIN_ V - 100mV TH t COMP V OUT V COUT_ COMPARATOR OUTPUT (V ) COUT_ ...

Page 6

... MUTE Pin Configurations NO2 12 N.C. 11 MAX4852 MAX4852H COM2 10 IN2 THIN QFN Typical Operating Circuit MAX4850_ OUT+ NC1 OUT- COM1 NO1 IN1 INPUT SELECT IN2 NC2 OUT+ COM2 V CC OUT- NO2 COUT CIN MUTE BUTTON ...

Page 7

... NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY. 12. WARPAGE NOT TO EXCEED 0.10mm. 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. ...

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