AS1751 , AS1752, AS1753
H i g h - Sp e e d , L o w - Vo l ta g e , S i n g l e - S u p p l y,
0 . 9
Ω,
Q u a d S P S T A n a l o g S w i t c h e s
D a ta S he e t
1 General Description
The AS1751/AS1752/AS1753 are high-speed, low-volt-
age, quad single-pole/single-throw (SPST) analog
switches.
Fast switching speeds, low ON-resistance, and low
power consumption make these devices ideal for single-
cell battery powered applications.
These highly-reliable devices operate from a single +1.6
to +3.6V supply, and are differentiated by the type and
number of switches:
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2 Key Features
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ON-Resistance:
- 0.9Ω (+3V supply)
- 2.5Ω (+1.8V supply)
R
ON
Matching:
- 0.12Ω (+3V supply)
- 0.25Ω (+1.8V supply)
R
ON
Flatness: 0.1Ω (+3V Supply)
Supply Voltage Range: +1.6 to +3.6V
Switching Speed: t
ON
= 22ns, t
OFF
= 14ns
Current-Handling: 250mA Continuous
Break-Before-Make Switching (AS1753)
Rail-to-Rail Signal Handling
1.8V CMOS Logic Compatible (+3V Supply)
Operating Temperature Range: -40 to +85ºC
Package Types:
- 16-pin TQFN (3mm x 3mm)
- 14-pin TSSOP
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AS1751 – Four normally open (NO) switches
AS1752 – Four normally closed (NC) switches
AS1753 – Two NO switches and Two NC switches
The AS1753 supports break-before-make switching.
With very low ON-resistance (R
ON
), R
ON
matching and
R
ON
flatness, the devices can accurately switch signals
for sample and hold circuits, digital filters, and op-amp
gain switching networks.
The AS1751/AS1752/AS1753 digital logic input is 1.8V
CMOS-compatible when using a +3V supply, and all
devices can handle Rail-to-Rail signals.
The devices are available in a 3mm x 3mm 16-pin TQFN
package and a 14-pin TSSOP package.
Figure 1. 14-pin TSSOP Block Diagrams
AS1751
1
NO1
2
COM1
3
NO2
4
COM2
5
IN2
6
IN3
7
GND
14
V+
13
IN1
12
IN4
11
NO4
10
COM4
9
COM3
8
NO3
1
NC1
2
COM1
3
NC2
4
COM2
5
IN2
6
IN3
7
GND
!
!
3 Applications
The devices are ideal for use in power routing systems,
cordless and mobile phones, MP3 players, CD and DVD
players, PDAs, handheld computers, digital cameras,
hard drives, and any other application where high-speed
signal switching is required.
AS1753
14
V+
13
IN1
12
IN4
11
NC4
10
COM4
9
COM3
8
NC3
1
NO1
2
COM1
3
NC2
4
COM2
5
IN2
6
IN3
7
GND
14
V+
13
IN1
12
IN4
11
NC4
10
COM4
9
COM3
8
NO3
AS1752
Device
AS1751
AS1752
AS1753
Input
Low
High
Low
High
Low
High
Switch State
Off
On
On
Off
Switches 1, 3 = Off
Switches 2, 4 = On
Switches 1, 3 = On
Switches 2, 4 = Off
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Revision 1.41
1 - 16
AS1751/AS1752/AS1753
Data Sheet
- P i n o u t
4 Pinout
Pin Assignments
Figure 2. TQFN Pin Assignments (Top View)
16 COM1
16 COM1
16 COM1
15 NO1
15 NO1
15 NC1
13 IN1
13 IN1
NO2 1
COM2 2
12 IN4
NC2 1
COM2 2
12 IN4
NC2 1
COM2 2
13 IN1
12 IN4
11 NC4
10
14 V+
14 V+
–
3
AS1751
11 NO4
10
–
–
3
AS1752
11 NC4
10
–
–
3
AS1753
14 V+
–
IN2 4
IN3 5
GND 6
NO3 7
COM3 8
9 COM4
IN2 4
IN3 5
GND 6
NC3 7
COM3 8
9 COM4
IN2 4
IN3 5
GND 6
NO3 7
COM3 8
9 COM4
Figure 3. TSSOP Pin Assignments (Top View)
NC1 1
COM1 2
NC2 3
COM2 4
IN2 5
IN3 6
GND 7
NO1 1
COM1 2
NO2 3
COM2 4
IN2 5
IN3 6
GND 7
14 V+
13 IN1
12 IN4
14 V+
13 IN1
12 IN4
NO1 1
COM1 2
NC2 3
COM2 4
IN2 5
IN3 6
GND 7
14 V+
13 IN1
12 IN4
AS1751
11 NO4
10 COM4
9 COM3
8 NO3
AS1752
11 NC4
10 COM4
9 COM3
8 NC3
AS1753
11 NC4
10 COM4
9 COM3
8 NO3
Pin Descriptions
Table 1. Pin Descriptions
Pin Number
Pin Name
COM1:COM4
GND
(see
Figure 2
and
Figure 3)
IN1:IN4
NC1:NC4
NO1:NO4
V+
Ground
Analog Switch 1, 2, 3, 4 Logic Control Input
Analog Switch 1, 2, 3, 4 Normally Closed Terminal
Analog Switch 1, 2, 3, 4 Normally Open Terminal
Input Supply Voltage.
+1.6 to +3.6V
Description
Analog Switch 1, 2, 3, 4 Common
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Revision 1.41
2 - 16
AS1751/AS1752/AS1753
Data Sheet
- A b s o l u t e M a x i m u m
Ratings
5 Absolute Maximum Ratings
Stresses beyond those listed in
Table 2
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
Electrical Character-
istics on page 4
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Table 2. Absolute Maximum Ratings
Parameter
V+, INx to GND
COMx, NOx, NCx to GND
†
Min
-0.3
-0.3
-250
-350
Max
+5
V+
+ 0.3
+250
+350
727
1349
Units
V
V
mA
mA
mW
ºC
V
mA
ºC
ºC
Comments
COMx, NOx, NCx Continuous Current
COMx, NOx, NCx Peak Current
16-pin TQFN
Continuous Power
Dissipation (T
AMB
= +70ºC) 14-pin TSSOP
Operating Temperature Range
Electro-Static Discharge
Latch Up Immunity
Junction Temperature
Storage Temperature Range
Pulsed at 1ms 10% duty cycle
Derate at 9.1W/ºC above +70ºC
Derate at 16.9W/ºC above +70ºC
HBM Mil-Std883E 3015.7
methods
Norm:
JEDEC 17
-40
+85
2500
250
+150
-65
+150
Package Body Temperature
+260
ºC
The reflow peak soldering temperature (body
temperature) specified is in accordance with
IPC/JEDEC J-STD-020C “Moisture/Reflow
Sensitivity Classification for Non-Hermetic
Solid State Surface Mount Devices”
†
Signals on pins COM1, COM3, NO1, NO2, NC1, or NC2 that exceed V+ or GND are clamped by internal diodes. For-
ward-diode current should be limited to the maximum current rating.
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Revision 1.41
3 - 16
AS1751/AS1752/AS1753
Data Sheet
- E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
Table 3. Power Supply Characteristics
Symbol
V+
I+
Parameter
Power Supply Range
Positive Supply
Current
Conditions
T
AMB
= T
MIN
to T
MAX
V+ = 3.6V, V
INx
= 0 or V+, T
AMB
= +25ºC
Min
1.6
Typ
Max Unit
3.6
0.1
V
µA
V+ = +2.7 to +3.6V, V
IH
= +1.4V, V
IL
= +0.5V, T
AMB
= T
MIN
to T
MAX
(unless otherwise specified). Typ values @ V+ =
+3.0V, T
AMB
= +25ºC.
Table 4. +3V Supply Electrical Characteristics
Symbol
Analog Switch
V
COMx
,
V
NOx
, V
NCx
R
ON
Analog Signal Range
ON-Resistance
ON-Resistance Match
1
Between Channels
ON-Resistance
2
Flatness
NOx or NCx
Off-Leakage Current
COMx Off-Leakage
Current
COMx On-Leakage
Current
V+ = 2.7V, I
COMx
= 100mA,
V
NOx
or V
NCx
= 1.5V
V+ = 2.7V, I
COMx
= 100mA,
V
NOx
or V
NCx
= 1.5V
V+ = 2.7V, I
COMx
= 100mA,
V
NOx
or V
NCx
= 1, 1.5, or 2V
V+ = 3.6V,
V
COMx
= 0.3 or 3.6V,
V
NOx
or V
NCx
= 3.6 or 0.3V
V+ = 3.6V,
V
COMx
= 0.3 or 3.6V,
V
NOx
or V
NCx
= 3.6 or 0.3V
V+ = 3.6V,
V
COMx
= 0.3 or 3.6V,
V
NOx
or V
NCx
= 0.3 or 3.6V
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
-2.5
-10
-2.5
-10
-2.5
-10
0.02
0.03
0
0.4
V+
0.9
1
0.12
0.15
0.1
0.12
+2.5
nA
+10
+2.5
nA
+10
+2.5
nA
+10
Ω
Ω
V
Ω
Parameter
Conditions
Min
Typ
Max Unit
ΔR
ON
R
FLAT(ON)
I
NOx(OFF)
,
I
NCx(OFF)
I
COMx(OFF)
I
COMx(ON)
Switch Dynamic Characteristics
t
ON
Turn On Time
3
V
NOx
or V
NCx
= 1.5V,
R
LOAD
= 50Ω, C
LOAD
=
35pF, Figures 13, 14
V
NOx
or V
NCx
= 1.5V,
R
LOAD
= 50Ω, C
LOAD
=
35pF, Figures 13, 14
3
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
2
16
22
ns
24
t
OFF
Turn Off Time
3
5
14
ns
15
t
BBM
Q
C
OFF
C
COMx(OFF)
C
COMx(ON)
Break-Before-Make
Charge Injection
NOx, NCx
Off-Capacitance
COMx
Off-Capacitance
COMx
On-Capacitance
V
NOx
or V
NCx
= 1.5V,
R
LOAD
= 50Ω, C
LOAD
=
35pF,
Figure 15
(AS1753)
11
ns
2
45
49
85
pC
pF
pF
pF
V
GEN
= V+, R
GEN
= 0, C
LOAD
= 1.0nF,
Figure 16
f = 1MHz,
Figure 17
f = 1MHz,
Figure 17
f = 1MHz,
Figure 17
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Revision 1.41
4 - 16
AS1751/AS1752/AS1753
Data Sheet
- E l e c t r i c a l C h a r a c t e r i s t i c s
Table 4. +3V Supply Electrical Characteristics (Continued)
Symbol
V
ISO
Parameter
Off-Isolation
5
4
Conditions
f = 10MHz, R
LOAD
= 50Ω, C
LOAD
= 5pF,
Figure 18
f = 1MHz, R
LOAD
= 50Ω, C
LOAD
= 5pF,
Figure 18
f = 10MHz, R
LOAD
= 50Ω, C
LOAD
= 5pF,
Figure 18
f = 1MHz, R
LOAD
= 50Ω, C
LOAD
= 5pF,
Figure 18
f = 20Hz to 20kHz, V
COMx
= 2Vp-p, R
LOAD
= 32Ω
Min
Typ
-40
Max Unit
dB
-55
-70
dB
-80
0.033
%
Crosstalk
THD
Logic Input
V
IH
V
IL
I
IN
Total Harmonic
Distortion
Input Logic High
Input Logic Low
Input Leakage Current
V
INx
= 0 or V+
1.4
0.5
-1
0.0001
+1
V
V
µA
V+ = +1.8V, V
IH
= +1.0V, V
IL
= 0.4V, T
AMB
= T
MIN
to T
MAX
(unless otherwise specified). Typ values @ T
AMB
= +25ºC.
Table 5. +1.8V Supply Electrical Characteristics
Symbol
Analog Switch
V
COMx
,
V
NOx
, V
NCx
R
ON
Analog Signal
Range
ON-Resistance
ON-Resistance
Match Between
1
Channels
V+ = 1.8V, I
COMx
= 10mA,
V
NOx
or V
NCx
= 0.9V
V+ = 1.8V, I
COMx
= 10mA,
V
NOx
or V
NCx
= 0.9V
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
T
AMB
= +25ºC
T
AMB
= T
MIN
to T
MAX
0.05
0
0.9
V+
2.5
3
0.25
0.25
Ω
V
Ω
Parameter
Conditions
Min
Typ
Max
Unit
ΔR
ON
Switch Dynamic Characteristics
t
ON
Turn On Time
3
V
NOx
or V
NCx
= 1.0V,
T
AMB
= +25ºC
R
LOAD
= 50Ω, C
LOAD
= 35pF,
T
AMB
= T
MIN
to T
MAX
Figures 13, 14
V
NOx
or V
NCx
= 1.0V,
T
AMB
= +25ºC
R
LOAD
= 50Ω, C
LOAD
= 35pF,
T
AMB
= T
MIN
to T
MAX
Figures 13, 14
V
GEN
= V+, R
GEN
= 0, C
LOAD
= 1.0nF,
Figure 16
1.0
22
30
35
ns
t
OFF
Q
Logic Input
V
IH
V
IL
I
IN
Turn Off Time
3
12
20
25
ns
pC
V
0.4
V
µA
Charge Injection
Input Logic High
Input Logic Low
Input Leakage
Current
1
V
INx
= 0 or V+
-1
0.0001
+1
1.
ΔR
ON
= R
ON(MAX)
- R
ON(MIN)
.
2. Flatness is defined as the difference between the maximum and the minimum value of ON-resistance as measured
over the specified analog signal ranges.
3. Guaranteed by design.
4. Off-Isolation = 20log10(V
COMx
/V
NOx
), V
COMx
= output, V
NOx
= input to off switch.
5. Between two switches.
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Revision 1.41
5 - 16
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