MAX4908, MAX4909, MAX4930, MAX4932 Dual 3:1 Clickless Audio Multiplexers with Negative-Signal Handling

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Description

The MAX4908/MAX4909/MAX4930/MAX4932 dual 3:1 clickless audio multiplexers feature negative-signal capability that allows signals as low as V_CC - 5.5V to pass through without distortion. These analog multiplexers have a low on-resistance (0.38Ω), low supply current, and operate from a single +1.8V to +5.5V supply.

The MAX4908 has shunt resistors on all input terminals, and the MAX4909 has shunt resistors on all input terminals except X0 and Y0. The MAX4930 has shunt resistors only on the X2 and Y2 terminals, and the MAX4932 has no shunt resistors. The shunt resistor feature reduces click-and-pop sounds by automatically discharging the capacitance at the input terminal when they are not connected. A break-before-make feature further reduces popping.

The MAX4908/MAX4909/MAX4930/MAX4932 use two digital control inputs CB1 and CB2 to switch between signals. The digital control inputs can accept up to +5.5V independent of the supply voltage.

The MAX4908/MAX4909/MAX4930/MAX4932 are available in 12-bump UCSP™ and 14-pin TDFN-EP packages and operate over the -40°C to +85°C extended temperature range.

Key Features

Applications/Uses

Distortion-Free Negative Signal Throughput Down to V_CC - 5.5V
Internal Shunt Resistors Reduce Click-and-Pop Sounds
High PSRR Reduces Supply Noise
Low On-Resistance: 0.38Ω (typ)
Channel-to-Channel Matching: 0.1Ω (max)
On-Resistance Flatness: 0.35Ω (max)
Single +1.8V to +5.5V Supply Voltage
-70dB (typ) Crosstalk (20kHz)
-80dB (typ) Off-Isolation (20kHz)
0.02% (typ) Total Harmonic Distortion
50nA Leakage Current
50nA Supply Current

	Cell Phones
	MP3 Players
	Notebook Computers
	PDAs and Handheld Devices

Key Specifications: Switches and Multiplexers (Low Voltage)

Part Number

Configuration

Number of Channels

V_SUPPLY, Single (min) (V)

V_SUPPLY, Single (max) (V)

R_ON (max) (Ω)

I_{L (OFF)} (max) (nA)

C_ON (pF)

C_OFF (pF)

Features

V_ISO, Off-Isolation (dB)

V_CT, Crosstalk (dB)

ΔR_ON (max) (Ω)

R_FLAT(ON) (max) (Ω)

Redundancy Switch

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Price^**

MAX4908

SP3T

1.8

5.5

0.8

450

200

•	1.8V Logic Compatible

0.1

0.35

Yes

THIN QFN (Dual)/14
UCSP/12

$1.20 @ 1k

MAX4909

$1.20 @ 1k

See All Switches and Multiplexers (Low Voltage) (127)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-12 of 12

MAX4908

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4908ETD+

THIN QFN (Dual);14 pin;10 mm²
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T1433+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4908ETD+T

THIN QFN (Dual);14 pin;10 mm²
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T1433+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4908EBC+

UCSP;12 pin;3 mm²
Dwg: 21-0104F (PDF)
Use pkgcode/variation: B12+1*

-40°C to +85°C

See data sheet
Materials Analysis

MAX4908EBC+T

UCSP;12 pin;3 mm²
Dwg: 21-0104F (PDF)
Use pkgcode/variation: B12+1*

-40°C to +85°C

See data sheet
Materials Analysis

MAX4909

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4909ETD+

THIN QFN (Dual);14 pin;10 mm²
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T1433+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4909ETD+T

THIN QFN (Dual);14 pin;10 mm²
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T1433+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4909EBC+

UCSP;12 pin;3 mm²
Dwg: 21-0104F (PDF)
Use pkgcode/variation: B12+1*

-40°C to +85°C

See data sheet
Materials Analysis

MAX4909EBC+T

UCSP;12 pin;3 mm²
Dwg: 21-0104F (PDF)
Use pkgcode/variation: B12+1*

-40°C to +85°C

See data sheet
Materials Analysis

MAX4932

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4932ETD+

THIN QFN (Dual);14 pin;10 mm²
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T1433+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4932ETD+T

THIN QFN (Dual);14 pin;10 mm²
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T1433+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4932EBC+

UCSP;12 pin;3 mm²
Dwg: 21-0104F (PDF)
Use pkgcode/variation: B12+1*

-40°C to +85°C

See data sheet
Materials Analysis

MAX4932EBC+T

UCSP;12 pin;3 mm²
Dwg: 21-0104F (PDF)
Use pkgcode/variation: B12+1*

-40°C to +85°C

See data sheet
Materials Analysis