MAX4908ETD+TCFD-MAX4932EWC+T Fast Delivery |IC PHOENIX CO.,LIMITED

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MAX4908ETD+TCFD-MAX4932EWC+T
Dual 3:1 Clickless Audio Multiplexers with Negative-Signal Handling
General Description
The MAX4908/MAX4909/MAX4930/MAX4932 dual
3:1 clickless audio multiplexers feature negative-signal
capability that allows signals as low as VCC - 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 wafer-level package (WLP) and 14-pin TDFN-EP
package and operate over the -40°C to +85°C extended
temperature range.
Applications●Cell Phones●PDAs and Handheld Devices●Notebook Computers●MP3 Players
Beneits and Features●Distortion-Free Negative Signal Throughput Down to
VCC - 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
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
(All voltages referenced to GND.)
VCC, CB_ .............................................................-0.3V to +6.0VX, X_, Y, Y_ ......................................(VCC - 6V) to (VCC + 0.3V)Continuous Current X, X_, Y, Y_ ....................................±300mAPeak Current X, X_, Y, Y_ (pulsed at 1ms, 50% Duty Cycle) .........................................................±400mAPeak Current X, X_, Y, Y_ (pulsed at 1ms, 10% Duty Cycle) .........................................................±500mA
Continuous Power Dissipation (TA = +70°C)12-Bump WLP (derate 8.5mW/°C above +70°C) ............678mW14-Pin TDFN, Single-Layer Board (derate 18.5mW/°C above +70°C) ............................1482mW14-Pin TDFN, Multilayer Board (derate 24.4mW/°C above +70°C) ............................1951mWOperating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°CStorage Temperature Range ............................-65°C to +150°CLead Temperature (soldering, 10s) .................................+300°C
(VCC = +2.7V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.0V, TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLY
Supply Voltage VCC1.85.5V
Supply Current ICC
VCC = +5.5V, VCB_ = 0V or VCC0.052VCC = +2.7V, VCB_ = +0.5V or +1.4V4
VCC = +5.5V, VCB_ = +0.5V or +1.4V8
ANALOG SWITCH
Analog Signal Range (Note 2)VX_, VY_,
VX, VY
VCC -
5.5VVCCV
On-Resistance (Note 3)RON
VCC = +2.7V; VX_ = VY_ =
VCC - 5.5V; -1V, 0V, +1V, +2V,
VCC; IX_ = IY_ = 100mA
TA = +25°C0.380.75TA = TMIN to TMAX0.8
On-Resistance Match Between Channels (Notes 3 and 4)ΔRONBetween X0 and Y0, X1 and Y1, X2 and Y2;
VCC = +2.7V; VX_ or VY_ = 0V; IX_ = IY_= 100mA0.1Ω
On-Resistance Flatness(Notes 3 and 5)RFLATVCC = +2.7V; VX_ = VY_ = VCC - 5.5V,-1V, 0, +1V, +2V, VCC; IX_ = IY_ = 100mA0.35Ω
Shunt Switch ResistanceRSH23.86kΩ
X0, Y0 Off-Leakage Current(MAX4909/MAX4930/MAX4932)
IL(OFF)
VCC = +2.7V, switch open,
VX0 or VY0 = -2.5V or +2.5V,
VX or VY = +2.5V or -2.5V
TA = +25°C-50+50
TA = TMIN to TMAX-200+200
X1, Y1 Off-Leakage Current(MAX4930/MAX4932)
VCC = +2.7V, switch open,
VX1 or VY1 = -2.5V or +2.5V,
VX or VY = +2.5V or -2.5V
TA = +25°C-50+50
TA = TMIN to TMAX-200+200
X2, Y2 Off-Leakage Current(MAX4932)
VCC = +2.7V, switch open,
VX2 or VY2 = -2.5V or +2.5V,
VX or VY = +2.5V or -2.5V
TA = +25°C-50+50
TA = TMIN to TMAX-200+200
X, Y On-Leakage CurrentIL(ON)
VCC = +2.7V, switch closed,
VX0 or VY0 = -2.5V or +2.5V or unconnected, VX = VY = -2.5V
TA = +25°C-100+100
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(VCC = +2.7V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.0V, TA = +25°C.) (Note 1)
Note 1: All parameters are production tested at TA = +25°C and guaranteed by design over the specified temperature range.
Note 2: Signals on X, Y, X_, or Y_ exceeding VCC are clamped by internal diodes. Limit forward-diode current to maximum current
rating.
Note 3: Guaranteed by design; not production tested.
Note 4: ΔRON = RON(MAX) – RON(MIN).
Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 6: X Off-Isolation = 20log10 [VX / VX_], VX = output, VX_ = input to off switch. Y Off-Isolation = 20log10 [VY / VY_], VY = output,
VY_ = input to off switch.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DYNAMIC CHARACTERISTICS
Turn-On TimetONVCC = +2.7V, CB_ = low to high, RL = 50Ω,
CL = 5pF, Figure 21.0µs
Turn-Off TimetOFFVCC = +2.7V, CB_ = high to low, RL = 50Ω,
CL = 5pF, Figure 21.0µs
Break-Before-Make Delay
TimetDVCC = +2.7V, CB_ = low to high or high to low,RL = 50Ω, CL = 5pF, Figure 31.015ns
Charge Injection QVX = VY = 0V, RGEN = 0Ω, CL = 1nF, Figure 4300pC
Power-Supply Rejection Ratio PSRRfSW = 20kHz, VX or VY = 1VRMS, RL = 50Ω, CL = 5pF60dB
Off-IsolationVISOfSW = 20kHz, VX = VY = 1VRMS, RL = 50Ω,Figure 5 (Note 6)-80dB
CrosstalkVCTfSW = 20kHz, VX or VY = 1VRMS, RL = 50Ω, Figure 5-70dB
Total Harmonic DistortionTHDfSW = 20Hz to 20kHz, VX or VY = 0.5VP-P, RL = 50Ω, DC bias = 00.02%
X_, Y_ Off-CapacitanceCX_(OFF)
CY_(OFF)
fSW = 1MHz, VX or VY = 0.5VP-P, DC bias = 0,Figure 6200pF
X, Y On-CapacitanceCX(ON)
CY(ON)
fSW = 1MHz, VX or VY = 0.5VP-P, DC bias = 0,Figure 6450pF
DIGITAL INPUTS (CB_)
Input Logic-HighVIH1.4V
Input Logic-LowVIL0.5V
Input Leakage CurrentICBVCB_ = 0V or VCC-1+1µA
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Electrical Characteristics (continued)
(VCC = 3.0V, TA = +25°C, unless otherwise noted.)
CHANNEL ON-RESISTANCE
vs. COM VOLTAGE
MAX4908/09 toc02
COM VOLTAGE (V)
ON-RESISTANCE (10-1-2
TA = +85C
TA = +25C
TA = -40C
VCC = 3V
CHANNEL ON-RESISTANCE
vs. X/Y VOLTAGE
MAX4908/09 toc03
X/Y VOLTAGE (V)
ON-RESISTANCE (3210
TA = +85°C
TA = +25°C
TA = -40°C
VCC = 5V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4908/09 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
VCB1 = VCB2 = 0V
TURN-OFF/TURN-ON TIME
vs. SUPPLY VOLTAGE
MAX4908/09 toc05
SUPPLY VOLTAGE (V)
tON
OFF
(ns)
X0 tON (CB1 = HIGH TO LOW)
CB2 = HIGH
X2 tOFF (CB1 = HIGH TO LOW)
X2 tON (CB1 = LOW TO HIGH)
X0 tOFF (CB1 = LOW TO HIGH)
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4908/09 toc06
LOGIC THRESHOLD (V)
VCB_ RISING
VCB_ FALLING
CHANNEL ON-RESISTANCE
vs. COM VOLTAGE
MAX4908/09 toc01
COM VOLTAGE (V)
ON-RESISTANCE (43210-1-2-3
VCC = 1.8V
VCC = 2.0V
VCC = 2.3V
VCC = 2.7VVCC = 3V
VCC = 5V
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
MAX4908/09 toc07
SUPPLY CURRENT (µA)
VCC = +4.3V
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Typical Operating Characteristics
(VCC = 3.0V, TA = +25°C, unless otherwise noted.)
CHARGE INJECTION
vs. X/Y COMMON VOLTAGE
MAX4908/09 toc08
X/Y VOLTAGE (V)
CHARGE INJECTION (pC)3210-1-2
VCC = 5V
VCC = 2V
FREQUENCY RESPONSE
MAX4908/09 toc09
FREQUENCY (MHz)
ON-LOSS (dB)10.10.01
OFF-ISOLATION vs. FREQUENCY
MAX4908/09 toc10
FREQUENCY (MHz)
OFF-LOSS (dB)10.10.01
CROSSTALK vs. FREQUENCY
MAX4908/09 toc11
FREQUENCY (MHz)
CROSSTALK (dB)10.010.1
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4908/09 toc12
THD (%)10.1
RL = 50Ω
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX4908/09 toc13
PSRR (dB)
RL = 50Ω
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Typical Operating Characteristics (continued)
PINNAMEFUNCTIONTDFN-EPWLPB4VCCPositive Supply Voltage InputC4XAnalog Output X Common Terminal
3,10—N.C.No Connection. Not internally connected.C3X2Analog Input X2C2X1Analog Input X1B2CB1Digital Control Input 1C1X0Analog Input X0 B1GNDGroundA1Y0Analog Input Y0A2Y1Analog Input Y1A3Y2Analog Input Y2B3CB2Digital Control Input 2A4YAnalog Output Y Common Terminal—EPExposed Pad. Connect to ground or leave unconnected.
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling
Bump Descriptions
MAX4908
MAX4909
MAX4930
MAX4932
TDFN(3mm x 3mm)451110YCB2N.C.GNDN.C.VCCXX1X0CB1
TOP VIEW
(BUMPS ON BOTTOM)
TOP VIEW
WLP(1.5mm x 2mm)234Y1Y2Y
GNDCB1CB2VCCX1X2X
EP = EXPOSED PAD.
CONNECT EP TO GND OR
LEAVE UNCONNECTED.
MAX4908
MAX4909
MAX4930
MAX4932
Bump Conigurations
Detailed Description
The MAX4908/MAX4909/MAX4930/MAX4932 dual 3:1 clickless audio multiplexers are low 0.38Ω (typ) on-resistance, low 150nA (typ) supply current, high power-supply rejection ratio (PSRR) devices that operate from a +1.8V to +5.5V
single supply. These devices feature a negative signal capability that allows signals below GND to pass through
without distortion and break-before-make switching.
The MAX4908/MAX4909/MAX4930/MAX4932 use two
digital control bits CB1 and CB2 to switch between signals
(see Table 1). The MAX4908 has shunt resistors on all the
unselected terminals to suppress click-and-pop sounds
that may occur from switching to a precharged terminal.
The MAX4909 does not have click-and-pop suppression
resistors on X0 and Y0 terminals for applications that
do not require predischarge switching. The MAX4930
only has shunt resistors on X2 and Y2 terminals. The
MAX4932 has no shunt resistors on all terminals.
Applications Information
Digital Control Inputs
The MAX4908/MAX4909/MAX4930/MAX4932 logic
inputs accept up to +5.5V regardless of supply voltage. For example, with a +3.3V supply, CB_ can be driven low to GND and high to +5.5V, allowing for mixing of logic levels in a system. Driving CB_ rail-to-rail minimizes power consumption. For a +3.3V supply voltage, the logic thresholds are +0.5V (low) and +1.4V (high).
Analog Signal Levels
These devices have a low on-resistance of 0.38Ω (typ) and
the on-resistance flatness is guaranteed over temperature
and will show minimal variation over the entire voltage
supply range (see the Typical Operating Characteristics).
The on-resistance flatness and low-leakage features
make it ideal for bidirectional operation. The switches are bidirectional, so X_, Y_, and common terminals X and Y
pins can be either inputs or outputs.
These devices pass signals as low as VCC - 5.5V, including
signals below ground with minimal distortion.
Click-Pop Suppression
The MAX4908 has a 3.8kΩ (typ) shunt resistor on all
of its input terminals to automatically discharge any
capacitance when they are not connected to common
terminal X and Y. The MAX4909 has shunt resistors on
all terminals except X0 and Y0. The MAX4930 only has
shunt resistors on X2 and Y2. The shunt resistors reduce
audible click-and-pop sounds that occur when switching
between audio sources.
Audible clicks and pops are caused when a step DC voltage is switched into the speaker. The DC step
transients can be reduced by automatically discharging the side that is not connected to the common terminal, thus reducing any residual DC voltage and clicks and pops.
Break-Before-Make Switching
The MAX4908/MAX4909/MAX4930/MAX4932 feature break-before-make switching, which is configured to break (open) the first set of contacts before engaging (closing) the new contacts. This prevents the momentary connection of the old and new signal paths to the output,
further reducing click-and-pop sounds.
Power-Supply Sequencing and Overvoltage
ProtectionCaution: Do not exceed the Absolute Maximum Ratings since stresses beyond the listed ratings may cause permanent damage to the device.
Proper power-supply sequencing is recommended for all CMOS devices. Improper supply sequencing can force the switch into latchup, causing it to draw excessive supply
current. The only way out of latchup is to recycle the power and reapply properly. Connect all ground pins first,
apply power to VCC , and finally apply signals to X_, Y_, and common terminals. Follow the reverse order upon
power-down.
Table 1. Truth Table
CB1CB2COMMON XCOMMON Y0High ImpedanceHigh Impedance1Connected to X0Connected to Y00Connected to X1Connected to Y11Connected to X2Connected to Y2
MAX4908/MAX4909/
MAX4930/MAX4932
Dual 3:1 Clickless Audio Multiplexers
with Negative-Signal Handling

Partno	Mfg	Dc	Qty	Available	Descript
MAX4908ETD+TCFD	MAXIM	N/a	589	avai	Dual 3:1 Clickless Audio Multiplexers with Negative-Signal Handling
MAX4932EWC+T \|MAX4932EWCT	MAXIM	N/a	5860	avai	Dual 3:1 Clickless Audio Multiplexers with Negative-Signal Handling