ST STG3684 User Manual
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LOW VOLTAGE 0.5Ω MAX DUAL SPDT SWITCH
WITH BREAK BEFORE MAKE FEATURE
■ HIGH SPEED:
t
= 0.3ns (TYP.) at VCC=3.0V
PD
t
= 0.4ns (TYP.) at VCC=2.3V
PD
■ ULTRA LOW POWER DISSIPATION:
I
=0.2µA (MAX.)at TA= 85°C
CC
■ LOW "ON" RESISTANCE V
R
=0.5Ω (MAX. TA= 25°C) at VCC=2.7
ON
R
=0.8Ω (MAX. TA= 25°C) at VCC=2.3V
ON
R
=3.0Ω (MAX. TA= 25°C) at VCC=1.8V
ON
■ WIDE OPERATING VOLTAGE RANGE:
V
(OPR) = 1.65V to 4.3V SINGLE SUPPLY
CC
■ 4.3V TOLERANT AND 1. 8V COMPATIBLE
THRESHOLD ON DIGITALCONTROL I NPUT
at V
■ LATCH-UP PERFORMANCE EXCEE DS
= 2.3 to 3. 0V
CC
300mA (JESD 17)
DESCRIPTION
The STG3684 is an high-speed CMOS DUAL
ANALOG S.P.D.T. (Single Pole Dual T hrow)
SWITCH or DUAL 2:1 Multiplexer/Demultiplexer
Bus Switch fabricated in silicon gate C
technology. It is designed t o operate from 1.65V to
4.3V, making this device ideal f or portable
applications.
It offers very l ow ON-Resistance (<0.5
V
=3.0V. The nIN inputs are provided to control
CC
the swi tches. The switches nS1 are ON (they are
IN
=0V:
2
MOS
Ω)at
STG3684
QFN
ORDER CODES
PACKAGE T & R
QFN STG3684QTR
connected to common Ports Dn) when the nIN
input is held high and OFF (high impedance state
exists between the two ports) when nIN is held
low; the switches nS2 are ON (they are connected
to common Ports Dn) when th e nIN input is hel d
low and OFF (high impedance state exists
between the two ports) when IN is held high.
Additional key features are fast switching speed,
Break Before Make Delay Time and Ultra Low
Power Cons umption. All inputs and outputs are
equipped with protection circuits against static
discharge, giving them ESD immunity a nd
transient excess voltage. It’s available in the
commercial temperature range in the QF N
package.
PIN CONNECTION
Rev. 2
1/11May 2004
STG3684
Figure 1: Input Equivalent Circuit Table 1: Pin Description
QFN
PIN N°
SYMBOL
NAME AND
FUNCTION
1, 9 1IN, 2IN Controls
2, 10
4, 12
1S1 to 2S1
1S2 to 2S2
Independent Channels
3, 11 D1, D2 Common Channels
5,7,8,13,15,16 NC Not Connected
6 GND Ground (0V)
14 V
CC
PositiveSupply
Voltage
Table 2: Truth Table
IN SWITCH S1 SWITCH S2
H ON OFF(*)
L OFF(*) ON
(*) High Impedance
Table 3: Absolute Maximum Ratings
Symbol Parameter Value Unit
V
V
V
V
I
IKC
I
I
OK
I
I
OP
or I
I
CC
P
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
(1) Derate above 70°C: by 18.5mW/°C.
Supply Voltage
CC
DC Input Voltage -0.5 to VCC+0.5
I
DC Control Input Voltage
IC
DC Output Voltage -0.5 to VCC+0.5
O
DC Input Diode Current on control pin (VIN<0V)
DC InputDiode Current (VIN<0V)
IK
DC Output Diode Current
DC Output Current
O
DC Output Current Peak (pulse at 1ms, 10% duty cycle)
DC VCCor Ground Current
GND
Power Dissipation at Ta=70°C (1)
D
Storage Temperature
stg
Lead Temperature (10 sec)
L
-0.5 to 4.6 V
V
-0.5 to 4.6 V
V
− 50 mA
± 50 mA
± 20 mA
± 300 mA
± 500 mA
± 100 mA
1120 mW
-65 to 150 °C
300 °C
Table 4: Recommended Operating Conditions
Symbol Parameter Value Unit
V
V
V
V
T
dt/dv
1) Truth Table guaranteed: 1.2V to 4.3V.
Supply Voltage (note 1)
CC
Input Voltage 0 to V
I
Control Input Voltage
IC
Output Voltage 0 to V
O
Operating Temperature
op
Input Rise and Fall Time Control Input V
= 1.65V to 2.7V
CC
= 3.0V to 4.3V
V
CC
1.65 to 4.3 V
CC
0to4.3 V
CC
-55 to 125 °C
0to20
0to10
2/11
V
V
ns/V
Table 5: DC Specifications
Test Conditions Value
Symbol Parameter
V
High Level
IH
Input Voltage
V
Low Level
IL
Input Voltage
R
Switch ON
ON
Resistance
(1)
∆R
ON
ON
Resistance
Match
between
channels
(1,2)
R
FLAT
ON
Resistance
FLATNESS
(3)
I
OFF State
OFF
Leakage
Current
(nSn), (Dn)
Input
I
IN
Leakage
Current
Quiescent
I
CC
Supply
Current (1)
V
CC
(V)
1.65-1.95 0.65V
2.3-2.5
2.7-3.0
3.3 1.5
3.6
4.3
1.65-1.95 0.40 0.40 0.40
2.3-2.5
2.7-3.6
3.3 0.50 0.50 0.50
3.6
4.3
4.3
3.0 0.40 0.50 0.60
2.7 0.40 0.50 0.60
2.3 0.50 0.80 0.80
1.8 0.70 3.0 4.0
1.65 0.80 3.0 4.0
2.7
4.3
3.0
2.7 0.07 0.15 0.15
2.3
1.65 V
4.3
0-4.3 VIN=0to4.3V ±0.1 ± 1 µA
1.65-4.3 VIN=VCCor
STG3684
=25°C
T
A
Min. Typ. Max. Min. Max. Min. Max.
CC
1.4 1.4 1.4
1.4 1.4 1.4
1.7 1.7 1.7
2.2 2.2 2.2
0.50 0.50 0.50
0.50 0.50 0.50
0.50 0.50 0.50
1.3 1.3 1.3
0.40 0.50 0.50
V
=0V to V
S
CC
IS=100mA
=1.5V
V
S
I
=100mA
S
=1.5V
V
S
I
=100mA
S
=0.8V
S
I
=100mA
S
0.06 Ω
VS=0.3or 4V ±10 ± 100 nA
±0.05 ±0.2 ±1 µA
GND
-40 to 85°C -55 to 125°C
0.65V
CC
0.65V
CC
1.5 1.5
Unit
V
V
Ω
Ω
Note 1:Guaranteedbydesign
Note 2:∆R
Note 3: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified
analog signal ranges.
ON=RON(MAX)-RON(MIN)
.
3/11
STG3684
Table 6: AC Electrical Characteristics (CL=35pF,RL=50Ω, tr=tf≤ 5ns)
Test Condition Value
= 25°C
Symbol Parameter
t
PLH,tPHL
t
t
Propagation Delay 1.65-1.95
TURN-ON time 1.65-1.95 VS=0.8V
ON
TURN-OFF time 1.65-1.95 VS=0.8V
OFF
Break Before Make
Time Delay
t
D
Q Charge injection 1.65-1.95
T
V
CC
(V)
2.3-2.7 0.40
3.0-3.6 0.30
=OPEN
V
I
A
Min. Typ. Max. Min. Max. Min. Max.
3.6-4.3 0.30
2.3-2.7 V
3.0-3.6 V
3.6-4.3 V
2.3-2.7 V
3.0-3.6 V
3.6-4.3 V
1.65-1.95
2.3-2.7 2 15
3.0-3.6 2 15
3.6-4.3 2 15
2.3-2.7 200
3.0-3.6 200
3.6-4.3 200
S
S
S
S
S
S
C
=35pF
L
R
L
V
S
C
= 100pF
L
R
=1MΩ
L
V
GEN
R
GEN
=1.5V
=1.5V
=1.5V
=1.5V
=1.5V
=1.5V
=50Ω
=1.5V
=0V
=0Ω
0.45
70
30 50 60
30 50 60
30 50 60
45
25 30 40
25 30 40
25 30 40
-40 to 85°C -55 to 125°C
Unit
ns
ns
ns
ns
pC
Table 7: An alog Switch Characteristics (C
= 5pF, RL=50Ω,TA= 25°C)
L
Test Condition Value
Symbol Parameter
OIRR Off Isolation (1) 1.65-4.3 V
V
(V)
CC
=1V
S
Min. Typ. Max. Min. Max. Min. Max.
RMS
f= 100KHz
Xtalk Crosstalk 1.65-4.3 V
=1V
S
RMS
f= 100KHz
THD Total Harmonic
Distortion
2.3-4.3 R
L
V
IN
=600Ω
=2V
PP
f= 20Hz to 20kHz
BW -3dB Bandwidth 1.65-4.3 R
IN
Sn
C
D
Control Pin Input
Capacitance
Sn Port Capacitance
D Port Capacitance when
3.3
3.3
C
C
=50Ω
L
f= 1MHz 37
f= 1MHz 84
Switch is Enabled
Note 1: Off Isolation=20Log10(VD/VS), VD= output. VS= input at off switch
= 25°C
T
A
-40 to 85°C -55 to 125°C
-64 dB
-54 dB
0.03 %
50 MHz
5
Unit
pF
4/11
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