National Semiconductor LMS4684 Technical data
LMS4684
0.5Ω Low-Voltage, Dual SPDT Analog Switch
LMS4684 0.5Ω Low-Voltage, Dual SPDT Analog Switch
June 2004
General Description
The LMS4684 is a low on-resistance, low voltage dual SPDT
(Single-Pole/Double-Throw) analog switch that operates
from a 1.8V to 5.5V supply. The LMS4684 features a 0.5Ω
for its NC switch and 0.8Ω RONfor its NO switch at a
R
ON
2.7V supply. The digital logic inputs are 1.8V logiccompatible with a 2.7V to 3.3V supply.
The LMS4684 is available in the 12 bump micro SMD and
the 10 lead LLP miniature packages. These PCB real estate
saving packages offer extreme performance while saving
money with small footprints.
Connection Diagrams
10-LLP Package 12-Bump micro SMD Package
Features
n NC switch R
n NO switch R
n 50nA (max) supply current T
n 1.8 to 5.5V single supply operation
n 12-Bump micro SMD package
n LLP-10 package, 3x4mm
n See AN-1112 for micro SMD package considerations
n See AN-1187 for LLP package considerations
ON
ON
0.5Ω max@2.7V
0.8Ω max@2.7V
= 25˚C
A
Applications
n Power routing
n Battery-operated equipment
n Communications circuits
n Modems
n Cell phones
DAP needs to be connected to pin 6 on the board
20077501
Top View
IN NO NC
0 Off On
1 On Off
Switches shown for Logic "0" input
© 2004 National Semiconductor Corporation DS200775 www.national.com
Center Bumps B2 and C2 are Not Electrically Connected
Top View
(Bumped Side Down)
20077502
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
LMS4684
please contact the National Semiconductor Sales Office/
Storage Temperature Range −65˚C to 150˚C
Junction Temperature (Note 3) 150˚C Max
Distributors for availability and specifications.
+
, IN −0.3V to 6.0V
V
COM, NO, NC −0.3V to (V
Continuous Current NO, NC,
+
+ 0.3V)
±
400mA
COM
ESD Tolerance (Note 2)
Human Body Model 2000V
Operating Ratings
Nominal Supply Voltage 1.8V to 5.5V
Temperature Range −40˚C to 85˚C
Thermal Resistance θ
LLP-10 TBD
micro SMD-12 TBD
JA
Machine Model 200V
Electrical Characteristics
Unless otherwise specified, V+= 2.7 to 3.3V, VIH= 1.4V, VIL= 0.5V. Typical values are measured at 3V, and TJ= 25˚C.
Boldface limits apply at temperature extremes.
Symbol Parameter Conditions Min Typ Max Units
,
V
NO
V
NC
V
COM
R
ON (NC)
R
ON (NO)
∆R
R
FLAT(NC)
Analog Signal Range 0 V
,
NC-On-Resistance (Note 4) V+=2.7, I
NO-On-Resistance (Note 4) V+=2.7, I
On-Resistance Match Between
ON
Channels (Note 4), (Note 5)
NC-On-Resistance Flatness (Note 6) V+=2.7V,
=0 to V
V
NC
=0 to V
V
NO
V+=2.7, I
or VNO=1.5V
V
NC
=100mA,
I
COM
=0 to V
V
NC
COM
COM
COM
=100ma,
+
=100ma,
+
=100ma,
+
LLP
=0˚C to 85˚C
T
J
micro SMD
0.3 0.5 Ω
0.45 0.8 Ω
TJ=0˚C to 85˚C
LLP
= −40˚C to +85˚C
T
J
micro SMD
= −40˚C to +85˚C
T
J
R
FLAT(NO)
I
NO(OFF)
or
I
NC(OFF)
I
COM
(ON)
NO-On Resistance Flatness (Note 6) V+=2.7V, I
= 0 to V
V
NO
COM
+
=100mA,
NO or NC Off-Leakage Current V+=3.3V, VNOor VNC=3V,
COM
=0.3V, 3V
COM
=3V, or floating
COM On-Leakage Current V
0.3V; V
+
=3.3V, VNOor VNC=3V,
0.3V, or floating; V
−1 1
−10 10
−2 2
−20 20
Dynamic Characteristics
t
t
t
ON
OFF
BBM
Turn-On Time V+=2.7V, VNOor VNC=1.5V;
=50Ω;CL=35pF;
R
L
Turn-Off Time V+=2.7V, VNOor VNC=1.5V;
=50Ω;CL=35pF;
R
L
Break-Before-Make-Delay V+=2.7V, VNOor VNC=1.5V;
=50Ω;CL=35pF;
R
L
Q Charge Injection COM =0; R
2 15 ns
=0; CL= 1nF; 200 pC
S
35 55
25 30
Digital I/O
V
IH
V
IL
I
IN
Input Logic High 1.4 V
Input Logic Low 0.5 V
IN Input Leakage Current VIN=0 or V
+
−1 1 µA
+
0.06 Ω
0.15
0.17
0.18
0.20
0.35 Ω
65
40
V
Ω
nA
nA
ns
ns
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Electrical Characteristics (Continued)
Unless otherwise specified, V+= 2.7 to 3.3V, VIH= 1.4V, VIL= 0.5V. Typical values are measured at 3V, and TJ= 25˚C.
Boldface limits apply at temperature extremes.
Symbol Parameter Conditions Min Typ Max Units
Power Supply
+
V
I+ Supply Current (Note 4) −50 0.04 50
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed.
Note 2: Human body model: 1.5kΩ in series with 100pF. Machine model, 0Ω in series with 200pF.
Note 3: The maximum power dissipation is a function of T
Note 4: Guaranteed by design.
Note 5: ∆R
Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges.
Power-Supply Range 1.8 5.5 V
−200 200
J(max)θJA
is equal to the difference between NC1/NC2 RONor NO1/NO2 RONat a specified voltage.
ON
and TA.
nA
Symbolic Diagram
LMS4684
20077503
Ordering Information
Package Part Number Package Marking Transport Media NSC Drawing
12-Bump
micro SMD
10-Pin LLP LMS4684LD
LMS4684ITL
LMS4684ITLX 3k Units Tape and Reel
LMS4684LDX 4.5k Units Tape and Reel
F09A
L4684
250 Units Tape and Reel TLA12DPA
1k Units Tape and Reel LDA10B
Pin Descriptions
Name Pin ID Description
LLP micro SMD
NC 5, 7 D3, D1 Analog switch normally closed terminal
IN 4, 8 C3, C1 Digital control input
COM 3, 9 B3, B1 Analog switch common terminal
NO 2, 10 A3, A1 Analog switch normally open terminal
+
V
GND 6, GND D2 Ground
1 A2 Positive supply voltage
B2, C2 Not electrically connected. Can be used to help dissipate heat by connecting to GND
pin.
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