19-4244; Rev 1; 12/08
KIT
ATION
EVALU
E
BL
AVAILA
Dual SPDT Negative Rail Analog Switches
with ±V
CC
Capability
General Description
The MAX14504/MAX14505/MAX14505A/MAX14506
dual single-pole/double-throw (SPDT) audio switches
feature negative signal capability that allows signals
from -V
CC
to +V
CC
to pass without distortion. They fea-
ture high continuous current ratings of 550mA (continu-
ous) and 850mA (pulsed). These analog switches have
low on-resistance, low supply current, and operate from
a single +2.3V to +5.5V supply.
The MAX14505/MAX14505A have internal shunt switches
that discharge the audio amplifier AC-coupling capaci-
tance at the normally open (NO) terminals. This reduces
click-and-pop sounds that occur when switching audio
signals between precharged points. The MAX14504/
MAX14505/MAX14505A/MAX14506 control the switches
with control bit, CB, and feature an enable input,
EN,
that
place COM in a high-impedance mode.
The MAX14504/MAX14505/MAX14505A/MAX14506 are
fully specified to operate from a single +2.3V to +5.5V
power supply. These devices are available in a 1.56mm
x 2.14mm, 12-bump WLP package, and operate over
the -40°C to +85°C extended temperature range.
Features
o
Distortion-Free Negative Signal Throughput from
-V
CC
to +V
CC
o
Internal Shunt Switches Reduce Click/Pop
(MAX14505/MAX14505A)
o
Low On-Resistance 0.36Ω (typ)
o
1mΩ (typ) On-Resistance Flatness
o
COM High Impedance for
EN
= High
o
Low 0.2µA (max) Shutdown Current
(MAX14505A/MAX14506)
o
+2.3V to +5.5V Single-Supply Voltage
o
Small, 1.56mm x 2.14mm, 12-Bump WLP Package
MAX14504/MAX14505/MAX14505A/MAX14506
Pin Configuration
MAX14504/
MAX14505/
MAX14505A/
MAX14506
1
2
3
4
TOP VIEW
(BUMPS ON BOTTOM)
Applications
Cell Phones
MP3 Players
Portable Audio Equipment
Speaker Switching
A
+
NO2
NEG
V
CC
NO1
COM2
B
NC2
C
EN
GND
COM1
CB
GND
NC1
Typical Operating Circuit appears at end of data sheet.
WLP
(1.56mm x 2.14mm)
Ordering Information/Selector Guide
PART
MAX14504EWC+
MAX14505EWC+*
MAX14505AEWC+
MAX14506EWC+*
PIN-PACKAGE
12 WLP
12 WLP
12 WLP
12 WLP
TOP MARK
AAH
AAI
AAK
AAJ
COM SIGNAL RANGE FOR
EN
= V
CC
±V
CC
±V
CC
0 to +V
CC
0 to +V
CC
CLICKLESS
NO
YES
YES
NO
Note:
All devices are specified over the -40°C to +85°C temperature range.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*Future
product—contact factory for availability.
________________________________________________________________
Maxim Integrated Products
1
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.
Dual SPDT Negative Rail Analog Switches
with ±V
CC
Capability
MAX14504/MAX14505/MAX14505A/MAX14506
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.)
V
CC
........................................................................-0.3V to +6.0V
NC_, NO_, COM_ (Note 1)..................-V
CC
- 0.3V to V
CC
+ 0.3V
NC_, NO_, COM_ (MAX14505A/MAX14506,
EN
= V
CC
)
(Note 1) .......................................................-0.3V to V
CC
+ 0.3V
CB,
EN......................................................................-0.3V
to +6V
Continuous Current (NC_, NO_, COM_).........................±550mA
Continuous Current on Shunt Switches ..............................±5mA
Peak Current (NC_, NO_, COM_)
(pulsed at 1ms, 10% duty cycle)..................................±850mA
Continuous Power Dissipation (T
A
= +70°C) for multilayer board:
12-Pin WLP (derate 8.5mW/°C above +70°C) ..............678mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Package Junction-to-Ambient Thermal
Resistance (θ
JA
) (Note 2)............................................118°C/W
Lead Temperature (soldering) .........................................+300°C
Note 1:
Signals on NC_, NO_, and COM_ exceeding -V
CC
or +V
CC
are clamped by internal diodes. For
EN
≥
V
IH
signals on NC_,
NO_, and COM_ exceeding 0 or +V
CC
are clamped by internal diodes (MAX14505A/MAX14506). Limit forward-diode current
to maximum current rating.
Note 2:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
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
(V
CC
= +2.3 to +5.5V, T
A
= T
MIN
to T
MAX,
C
NEG
= 3.3nF, unless otherwise noted. Typical values are at V
CC
= +3.0V, T
A
= +25°C,
unless otherwise noted.) (Note 3)
PARAMETER
ANALOG SWITCH
V
EN
= 0
Analog Signal Range
NC_, NO_,
COM_
(MAX14504/
MAX14505)
V
EN
= V
CC
(MAX14505A/
MAX14506)
T
A
= +25°C
T
A
= T
MIN
to
T
MAX
10
1
15
55
120
-V
CC
-V
CC
0
0.36
+V
CC
+V
CC
+V
CC
0.5
Ω
0.65
mΩ
mΩ
Ω
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
R
ON
V
CC
= +3.0V,
I
COM_
= 50mA,
V
NC_
, V
NO_
=
-V
CC
to V
CC
On-Resistance Match
Between Channels
On-Resistance Flatness
Shunt Switch Resistance
∆R
ON
R
FLAT (ON)
R
SHUNT
V
CC
= +3.0V, I
NC_
= I
NO_
= 50mA;
between NC_ and NO_ only
V
CC
= +3.0V, I
NC_
= I
NO_
= 50mA,
V
NC_
, V
NO_
= -V
CC
to V
CC
(Note 4)
V
NO_
= +100mV
2
_______________________________________________________________________________________
Dual SPDT Negative Rail Analog Switches
with ±V
CC
Capability
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.3 to +5.5V, T
A
= T
MIN
to T
MAX,
C
NEG
= 3.3nF, unless otherwise noted. Typical values are at V
CC
= +3.0V, T
A
= +25°C,
unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
V
CC
= +3.0V, switch open;
V
NO_
= -2.5V, +2.5V;
V
COM_
= +2.5V, -2.5V, unconnected
(MAX14504/MAX14506)
V
CC
= +3.0V, switch open;
V
NC_
= -2.5V, +2.5V;
V
COM_
= +2.5V, -2.5V, unconnected
COM_ On-Leakage
Current
DYNAMIC TIMING (Note 5)
Turn-On Time
Turn-Off Time
AUDIO PERFORMANCE
Total Harmonic Distortion Plus
Noise
Off-Isolation
Crosstalk
NC_ or NO_ Off-Capacitance
COM_ On-Capacitance
LOGIC INPUT (CB,
EN)
Input Logic-High
Input Logic-Low
Input Leakage Current
V
IH
V
IL
I
IN
V
CB
= V
EN
= 0 or V
CC
-1
1.4
0.5
+1
V
V
µA
THD+N
V
ISO
V
CT
C
NC
_
(OFF)
,
C
NO
_
(OFF)
f = 20Hz to 20kHz, V
COM_
= 0.5V
P-P
,
R
S
= R
L
= 50Ω; DC bias = 0
R
S
= R
L
= 50Ω; V
COM
_ = 0.5V
P-P
,
f = 20kHz (Note 6), Figure 2
R
S
= R
L
= 50Ω; V
COM
_ = 0.5V
P-P
,
f = 20kHz (Note 7), Figure 2
V
NC_/NO_
= 0.5V
P-P
, f = 1MHz; Figure 3
0.001
-84
-90
65
125
%
dB
dB
pF
pF
t
ON
t
OFF
V
NO_
or V
NC_
= 0, R
L
= 50Ω, Figure 1
V
NO_
or V
NC_
= 0, R
L
= 50Ω, Figure 1
14
1.5
60
3
ms
µs
V
CC
= +3.0V, switch closed;
V
COM_
= +2.5V, -2.5V ;
V
NC_
or V
NO_
= +2.5V, -2.5V, unconnected
MIN
TYP
MAX
UNITS
MAX14504/MAX14505/MAX14505A/MAX14506
-50
+50
nA
NC_ or NO_ Off-Leakage
Current
I
NC
_
(OFF)
,
I
NO_ (OFF)
-50
+50
I
COM_ (ON)
-100
+100
nA
C
COM
_
(ON)
V
NC_/NO_
= 0.5V
P-P
, f = 1MHz; Figure 3
_______________________________________________________________________________________
3
Dual SPDT Negative Rail Analog Switches
with ±V
CC
Capability
MAX14504/MAX14505/MAX14505A/MAX14506
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.3 to +5.5V, T
A
= T
MIN
to T
MAX,
C
NEG
= 3.3nF, unless otherwise noted. Typical values are at V
CC
= +3.0V, T
A
= +25°C,
unless otherwise noted.) (Note 3)
PARAMETER
POWER SUPPLY
Power-Supply Range
Power-Supply Rejection Ratio
(PSRR)
V
CC
Supply Current
I
CC
V
CC
R
COM_
= 50Ω, f = 10kHz
V
CC
= +3.0V, V
EN
= 0, V
CB
= 0 or V
CC
V
CC
= +5.5V, V
EN
= 0, V
CB
= 0 or V
CC
V
CC
= +3.0V, V
EN
= V
CC
(MAX14504/MAX14505)
V
CC
= +5.5V, V
EN
= V
CC
(MAX14504/MAX14505)
V
CC
Shutdown Supply Current
I
CC_SHDN
V
CC
= +3.0V, V
EN
= V
CC
(MAX14505A/MAX14506)
V
CC
= +5.5V, V
EN
= V
CC
(MAX14505A/MAX14506)
Supply Current Increase with
Supply Voltage
Negative Charge-Pump Output
I
CC_CTRL
V
NEG
V
CC
= 5.5V, V
CB
= V
EN
= 0.5V or 1.4V
C
NEG
= 3.3nF
-1.01V
CC
2
-V
CC
2.3
78
12
21
23
41
15
29
µA
0.15
0.2
5
-0.95V
CC
µA
V
5.5
V
dB
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 3:
All parameters are production tested at T
A
= +85°C, and guaranteed by design over the specified temperature range.
Note 4:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Note 5:
All timing is measured using 20% and 80% levels.
Note 6:
Off-Isolation = 20log
10
[V
COM_
/(V
NO_
or V
NC_
)], V
COM_
= output, V
NO_
or V
NC_
= input to off switch.
Note 7:
Between any two switches.
Typical Operating Characteristics
(V
CC
= 3.0V, T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
COM
MAX14504 toc01
ON-RESISTANCE vs. V
COM
0.9
0.8
0.7
R
ON
(Ω)
0.6
0.5
0.4
0.3
0.2
0.1
0
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
R
ON
(Ω)
V
CC
= 3.0V
MAX14504 toc02
ON-RESISTANCE vs. V
COM
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
V
CC
= 5.5V
MAX14504 toc03
1.0
0.9
0.8
0.7
R
ON
(Ω)
0.6
0.5
0.4
0.3
0.2
0.1
0
-2.30
-1.15
0
V
COM
(V)
1.15
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
V
CC
= 2.3V
1.0
1.0
2.30
-3
-2
-1
0
V
COM
(V)
1
2
3
-5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 5.5
V
COM
(V)
4
_______________________________________________________________________________________
Dual SPDT Negative Rail Analog Switches
with ±V
CC
Capability
Typical Operating Characteristics (continued)
(V
CC
= 3.0V, T
A
= +25°C, unless otherwise noted.)
NC_/NO_ TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
MAX14504 toc04
MAX14504/MAX14505/MAX14505A/MAX14506
R
ON
FLATNESS vs. V
COM
0.3650
20
MAX14504 toc05
2.0
0.3645
R
ON
(Ω)
t
ON
(ms)
15
t
ON
1.5
t
OFF
(µs)
0.3640
10
t
OFF
1.0
0.3635
5
0.5
0.3630
-3
-2
-1
0
V
COM
(V)
1
2
3
0
2.3
3.1
3.9
4.7
SUPPLY VOLTAGE (V)
0
5.5
NC_/NO_ TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
20
MAX14504 toc06
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
CB = EN = 0
20
MAX14504 toc07
2.0
25
t
ON
10
t
OFF
5
0.5
1.0
t
OFF
(µs)
t
ON
(ms)
SUPPLY CURRENT (µA)
15
1.5
15
10
5
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
0
0
2.3
3.1
3.9
4.7
5.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE
MAX14504 toc08
LOGIC-INPUT LOW THRESHOLD
vs. SUPPLY VOLTAGE
MAX14504 toc09
SUPPLY CURRENT
vs. CB LOGIC LEVEL
V
CC
= 5.5V
EN = 0
MAX14504 toc10
22
20
SUPPLY CURRENT (µA)
18
16
14
12
10
CB = EN = 0
-40
-15
10
35
60
V
CC
= 3.0V
V
CC
= 5.5V
2.0
1.8
LOGIC-INPUT LOW THRESHOLD (V)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
IH
V
IL
100
80
SUPPLY CURRENT (µA)
60
40
20
0
2.7
3.0
3.3
3.6
0
1.1
2.2
3.3
SUPPLY VOLTAGE (V)
CB LOGIC LEVEL (V)
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
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