19-2365; Rev 4; 3/09
0.7
Ω
, Low-Voltage, Quad 2:1 Analog
Multiplexers
General Description
The MAX4780/MAX4784 are low on-resistance, low-
voltage, quad 2:1 analog multiplexers that operate from
a single +1.6V to +4.2V supply. These devices have
fast switching speeds (t
ON
= 20ns, t
OFF
= 8ns), handle
rail-to-rail analog signals, and consume less than 1µW
of quiescent power.
When powered from a +2.7V supply, the MAX4780/
MAX4784 feature low 0.7Ω on-resistance (R
ON
), and
0.1Ω R
ON
flatness. The digital logic input is +1.8V
CMOS-logic compatible when using a single +3V supply.
The MAX4780/MAX4784 are available in 16-pin TSSOP
and 3mm x 3mm thin QFN packages.
o
Low R
ON
0.7Ω (+2.7V Supply)
2Ω (+1.8V Supply)
o
0.1Ω R
ON
Flatness (+2.7V Supply)
o
3mm x 3mm Thin QFN Package
o
+1.8V CMOS Logic Compatible
o
Fast Switching: t
ON
= 20ns, t
OFF
= 8ns
Features
o
Single-Supply Operation from 1.6V to 4.2V
MAX4780/MAX4784
Applications
Power Routing
Battery-Powered Systems
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
PART
MAX4780ETE
MAX4780EUE
MAX4784ETE
MAX4784EUE
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 Thin QFN-EP*
16 TSSOP
16 Thin QFN-EP*
16 TSSOP
*EP
= Exposed pad.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
NC1
16
A0
15
V+
14
A1
13
A0
0
1
12
NC4
A1
0
1
MAX4780
ON SWITCH
NC1, NC2
NO1, NO2
ON SWITCH
NC3, NC4
NO3, NO4
MAX4784
A0
ON SWITCH
X
NONE
COM1-NC1
COM2-NC2
0
COM3-NC3
COM4-NC4
COM1-NO1
COM2-NO2
1
COM3-NO3
COM4-NO4
NO1
1
NC1
16
A0
15
V+
14
CONTROL LOGIC
12
NC4
EN
13
NO1
1
COM1
2
11
NO4
EN
1
0
COM1
2
11
NO4
MAX4780
NC2
3
10
COM4
MAX4784
NC2
3
10
COM4
NO2
4
9
NC3
NO2
4
9
NC3
5
COM2
6
GND
7
COM3
8
NO3
0
5
COM2
6
GND
7
COM3
8
NO3
THIN QFN-EP
THIN QFN-EP
Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.
________________________________________________________________
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.
0.7
Ω
, Low-Voltage, Quad 2:1 Analog
Multiplexers
MAX4780/MAX4784
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V+, A_,
EN
..........................................................-0.3V to +4.6V
COM_, NO_, NC_ (Note 1) ........................-0.3V to (V+ + 0.3V)
Continuous Current COM_ , NO_, NC_ .........................±300mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms 10% duty cycle)..................................±500mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin Thin QFN (derate 14.7mW/°C
above +70°C)......................................................1176.5mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C) .........755mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
Signals on COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum
current rating.
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—Single +3V Supply
(V+ = +2.7V to +4.2V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = +3.0V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1.5V
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1.5V
V+ = 2.7V,
I
COM
_ = 100mA;
V
NO
_ or V
NC
_ = 1V, 1.5V, 2V
V+ = 3.6V;
V
COM
_ = 0.3V, 3.3V;
V
NO
_ or V
NC
_ = 3.3V, 0.3V
V+ = 3.6V;
V
COM
_ = 0.3V, 3.3V;
V
NO
_ or V
NC
_ = 3.3V, 0.3V,
or unconnected
V+ = 3.6V;
V
COM
_ = 3.3V, 0.3V;
V
NO
_ or V
NC
_ = 3.3V, 0.3V,
or unconnected
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
-1
-5
-1
-5
-2
-10
±0.002
±0.002
±0.002
0.1
0.1
0
V+
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
0.7
1
Ω
1.2
0.15
Ω
0.2
0.2
Ω
0.3
+1
nA
+5
+1
nA
+5
+2
nA
+10
On-Resistance (Note 4)
R
ON
On-Resistance Match
Between Channels
(Notes 4, 5)
On-Resistance Flatness
(Note 6)
∆R
ON
R
FLAT(ON)
NO_ or NC_ Off-Leakage
Current (Note 7)
I
NO_(OFF)
,
I
NC_(OFF)
COM_ Off-Leakage Current
(MAX4784 Only) (Note 7)
I
COM_(OFF)
COM_ On-Leakage Current
(Note 7)
I
COM_(ON)
2
_______________________________________________________________________________________
0.7
Ω
, Low-Voltage, Quad 2:1 Analog
Multiplexers
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(V+ = +2.7V to +4.2V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = +3.0V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
MAX4780/MAX4784
SWITCH DYNAMIC CHARACTERISTICS
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50Ω, C
L
= 35pF,
Figure 1
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50Ω, C
L
= 35pF,
Figure 1
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50Ω, C
L
= 35pF,
Figure 2
V
GEN
= 0, R
GEN
= 0,
C
L
= 1.0nF, Figure 3
f = 1MHz, Figure 4
f = 1MHz, Figure 4
f = 1MHz, Figure 4
Signal = 0, R
IN
= R
OUT
=
50Ω, C
L
= 5pF, Figure 5
f = 1MHz, V
COM
_ = 1V
P-P
,
R
L
= 50Ω, C
L
= 5pF, Figure 5
f = 1MHz, V
COM
_ = 1V
P-P
, R
L
= 50Ω, C
L
= 5pF, Figures 4, 5
f = 20Hz to 20kHz,
V
COM
_ = 2V
P-P
, R
L
= 32Ω
+25°C
+25°C
+25°C
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
+25°C
+25°C
+25°C
1
5
33
60
85
123
-67
-95
0.008
pC
pF
pF
pF
MHz
dB
dB
%
7
ns
8
20
25
ns
30
10
ns
18
Turn-On Time
t
ON
Turn-Off Time
t
OFF
Break-Before-Make (Note 8)
t
BBM
Charge Injection
NO_ or NC_ Off-Capacitance
COM_ Off-Capacitance
COM_ On-Capacitance
-3dB On-Channel Bandwidth
Off-Isolation (Note 9)
Crosstalk (Note 10)
Total Harmonic Distortion
LOGIC INPUT (A_,
EN)
Input Logic-High
Input Logic-Low
Input Leakage Current
POWER SUPPLY
Power-Supply Range
Positive Supply Current
Q
C
OFF
C
COM_(OFF)
C
COM_(ON)
BW
V
ISO
V
CT
THD
V
IH
V
IL
I
IN
V
EN
= 0 or +3.6V,
V
A0
= 0 or +3.6V
1.8
0.5
-1
0.005
+1
V
V
µA
V+
I+
V+ = 3.6V,
EN,
A0 = 0 or V+,
all channels on or off
T
MIN
to T
MAX
1.6
3.6
2
V
µA
_______________________________________________________________________________________
3
0.7
Ω
, Low-Voltage, Quad 2:1 Analog
Multiplexers
MAX4780/MAX4784
ELECTRICAL CHARACTERISTICS—Single +1.8V Supply
(V+ = +1.8V, V
IH
= +1.0V, V
IL
= +0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.)
(Notes 2, 3)
PARAMETER
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
R
ON
I
NO_(OFF)
,
I
NC_(OFF)
I
COM
_ = 10mA,
V
NO
_ or V
NC
_ = 1.0V
V
COM
_ = 0.3V, 1.5V;
V
NO
_ or V
NC
_ = 1.5V,
0.3V
V
COM
_ = 0.3V, 1.5V;
V
NO
_ or V
NC
_ = 1.5V,
0.3V
V
COM
_ = 0.3V, 1.5V;
V
NO
_ or V
NC
_ = 0.3V,
1.5V, or unconnected
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
-1
-5
-1
-5
-2
-10
0
2
V+
3
5
+1
nA
+5
+1
nA
+5
+2
nA
+10
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
On-Resistance
NO_ or NC_ Off-Leakage
Current (Note 7)
COM_ Off-Leakage Current
(MAX4784 Only) (Note 7)
COM_ On-Leakage Current
(Note 7)
Ω
I
COM_(OFF)
I
COM_(ON)
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
t
ON
V
NO
_, V
NC
_ = 1.0V,
RL = 50Ω, C
L
= 35pF,
Figure 1
V
NO
_, V
NC
_ = 1.0V,
R
L
= 50Ω, C
L
= 35pF,
Figure 1
V
NO
_, V
NC
_ = 1.0V,
R
L
= 50Ω, C
L
= 35pF,
Figure 2
V
GEN
= 0, R
GEN
= 0,
C
L
= 1nF, Figure 3
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
1
5
pC
10
ns
10
25
30
ns
35
15
ns
20
Turn-Off Time
t
OFF
Break-Before-Make (Note 8)
t
BBM
Charge Injection
Q
4
_______________________________________________________________________________________
0.7
Ω
, Low-Voltage, Quad 2:1 Analog
Multiplexers
ELECTRICAL CHARACTERISTICS—Single +1.8V Supply (continued)
(V+ = +1.8V, V
IH
= +1.0V, V
IL
= +0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.)
(Notes 2, 3)
PARAMETER
LOGIC INPUT (A_,
EN)
Input Logic-High
Input Logic-Low
Input Leakage Current
V
IH
V
IL
I
IN
V
EN
= 0 or +3.6V,
V
A0
= 0 or +3.6V
-1
1
0.4
+1
V
V
µA
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
MAX4780/MAX4784
The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is
used in this data sheet.
Note 3:
-40°C specifications are guaranteed by design.
Note 4:
R
ON
and
∆R
ON
matching specifications for QFN packaged parts are guaranteed by design.
Note 5:
∆R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 6:
Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7:
Leakage parameters are 100% tested at T
A
= +85°C, and guaranteed by correlation over the full rated temperature range.
Note 8:
Guaranteed by design.
Note 9:
Off-isolation = 20log
10
(V
COM
_/V
NO
_), V
COM
_ = output, V
NO
_ = input to off switch.
Note 10:
Between two switches.
Note 11:
Parts are guaranteed to 1 million cycles of operation. (Cycle = switch on
¡
switch off
¡
switch on.)
Note 12:
The minimum load resistance is 8Ω. (See the
Typical Application Circuit.)
Note 2:
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. V
COM
AND TEMPERATURE
MAX4780/MAX4784 toc01
ON-RESISTANCE vs. V
COM
3.0
2.5
2.0
R
ON
(Ω)
V+ = +1.8V
1.5
1.0
0.5
V+ = +3.0V
0
0
V
COM
(V)
V+ = +3.6V
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
V+ = +2.5V
V+ = +2.7V
V+ = +1.6V
2.0
1.8
1.6
1.4
R
ON
(Ω)
1.2
1.0
0.8
0.6
0.4
0.2
0
0
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4780/MAX4784 toc02
MAX4780/MAX4784 toc03
10,000
OFF, V+ = +3.0V
LEAKAGE CURRENT (pA)
1000
ON, V+ = +3.0V
V+ = +1.8V, T
A
= -40°C
V+ = +1.8V, T
A
= +25°C
V+ = +1.8V, T
A
= +85°C
V+ = +3.0V, T
A
= +85°C
100
ON, V+ = +1.8V
10
OFF, V+ = +1.8V
V+ = +3.0V, T
A
= -40°C
V+ = +3.0V, T
A
= +25°C
1
0.5
1.0
1.5
V
COM
(V)
2.0
2.5
3.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
