GENERAL DESCRIPTION
The ALD4211/ALD4212/ALD4213 are quad SPST CMOS analog
switches specifically designed for low voltage, high speed applications
where 0.2pC charge injection, 200pf sampling capacitor, and picoamp
leakage current are important analog switch operating characteristics.
These analog switches feature fast switching, low on-resistance and
micropower consumption.
TheALD4211/4212/4213 are designed for precision applications such as
charge amplifiers, sample and hold amplifiers, data converter switches,
and programmable gain amplifiers. These switches are also excellent for
low voltage micropower general purpose switching applications.
APPLICATIONS INFORMATION
The ALD4211/4212/4213 operate with a standard single power supply
from +3V to +12Volts. Functionality extends down to a +2 volt power
supply making it suitable for lithium battery or rechargeable battery
operated systems where power, efficiency, and performance are
important design considerations. Break-before-make switching is
guaranteed with single supply operation. The ALD4211/4212/4213
may also be used with dual power supplies from
1.5 to
6 volts.
With special charge balancing and charge cancellation circuitry on
chip the ALD4211/ALD4212/ALD4213 were developed for ultra low
charge injection applications. Using a 200pF sampling capacitor, very
fast precise signal acquisition may be achieved. With ultra low
quiescent current, these switches interface directly to CMOS logic
levels from microprocessor or logic circuits. On the board level, low
charge injection and fast operation may be achieved by using short
leads, minimizing input and output capacitances, and by adequate
bypass capacitors placed on the board at the supply nodes. For more
information, see Application Note AN4200.
The ALD4211/ALD4212/ALD4213 are manufactured with Advanced Linear
Devices enhanced ACMOS silicon gate CMOS process. They are
designed also as linear cell elements in Advanced Linear Devices'
"Function-Specific" ASIC.
CMOS LOW VOLTAGE HIGH SPEED QUAD PRECISION ANALOG SWITCHES
ALD4211/ALD4212
ALD4213
A
DVANCED
L
INEAR
D
EVICES,
I
NC.
FEATURES
3V, 5V and
5V supply operation
0.2pC charge injection
200pF sampling capacitor
pA leakage current
0.1
W power dissipation
High precision
Rail to rail signal range
Low On-resistance
Break-before-make switching
BENEFITS
Five times faster signal capture
Low switching transients
Low signal loss
Essentially no DC power consumption
Full analog signal range from rail to rail
Flexible power supply range for battery
operated systems
APPLICATIONS
Fast sample and hold
Computer peripherals
PCMCIA
Low level signal conditioning circuits
Portable battery operated systems
Analog signal multiplexer
Programmable gain amplifiers
Switched capacitor circuits
Micropower based systems
Video/audio switches
Feedback control systems
Operating Temperature Range
-55
C to +125
C
-40
C to +85
C
-40
C to +85
C
16-Pin
16-Pin
16-Pin
CERDIP
Plastic Dip
SOIC
Package
Package
Package
ALD4211 DC
ALD4211 PC
ALD4211 SC
ALD4212 DC
ALD4212 PC
ALD4212 SC
ALD4213 DC
ALD4213 PC
ALD4213 SC
ORDERING INFORMATION
* Contact factory for industrial temperature range.
LOGIC TABLE
Input Logic
Switch State
ALD4211 ALD4212
ALD4213
0
On
Off
Off
On
1
Off
On
On
Off
Switch 1 / Switch 4
Switch 2 / Switch 3
PIN CONFIGURATION/ BLOCK DIAGRAM
OUT
2
DC, PC, SC PACKAGE
1
14
2
3
13
12
11
10
9
4
5
6
7
8
15
16
IN
1
COM
1
OUT
1
V-
GND
OUT
4
COM
4
IN
4
IN
3
IN
2
COM
2
V+
NC
OUT
3
COM
3
1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ALD4211/ALD4212
Advanced Linear Devices
2
ALD4213
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
+
referenced to V
-
-0.3V to +13.2V
GND
-0.3V to +13.2V
Terminal voltage range (any terminal) Note 1
(V- -0.3)V to (V+ +0.3)V
Power dissipation
600 mW
Operating temperature range PC, SC package
-40
C to +85
C
DC package
-55
C to +125
C
Storage temperature range
-65
C to +150
C
Lead temperature, 10 seconds
+260
C
DC current (any terminal)
10mA
Supply
V
SUPPLY
1.5
6.0
1.5
6.0
V
Dual Supply
Voltage
3.0
12.0
3.0
12.0
V
Single Supply
POWER SUPPLY RANGE
4211/4212/4213 (PC,SC)
4211/4212/4213 (DC)
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Analog Signal Range
V
A
-5.0
5.0
-5.0
5.0
V
On - Resistance
R
ON
90
135
90
135
V
A
= 0V
I
A
= 1mA
120
190
-40
C to +85
C
140
210
-55
C to +125
C
Change of On-Resistance
R
ON
16
16
%
from -V
S
to +V
S
Change of On-Resistance
R
ON
/
T
0.43
0.43
%/
C
with Temperature
R
ON
Match between
2
2
%
Switches
Off Com Leakage
I
COML
50
100
50
100
pA
V
COM
=
4.0V,V
OUT
= -/+4.0V
Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Off Out Leakage
I
OUTL
50
100
50
100
pA
V
OUT
=
4.0V, V
COM
= -/+4.0V
Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
On Channel
I
D(ON)
50
100
50
100
pA
Leakage Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Input High Voltage
V
I
H
4.0
4.0
Logic "1"
Input Low Voltage
V
I
L
0.8
0.8
V
Logic "0"
Input High or
I
H
Input Low Current
I
I
L
10
10
nA
Supply Current
I
SUPPLY
0.01
1
0.01
1
A
DC ELECTRICAL CHARACTERISTICS
T
A
= 25
C V
+
= +5.0V, V- = -5.0V GND = 0.0V unless otherwise specified
4211/4212/4213 (PC,SC)
4211/4212/4213 (DC)
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
ALD4211/ALD4212
Advanced Linear Devices
3
ALD4213
AC ELECTRICAL CHARACTERISTICS
T
A
= 25
C V
+
= +5.0V, V
-
= -5.0V, GND = 0.0V unless otherwise specified
4211/4212/4213(PC)
4211/4212/4213(DC) 4211/4212/4213(SC)
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
Turn On
Delay time
t
ON
60
130
60
130
60
130
ns
(Note 2)
Turn Off
Delay time
t
OFF
60
130
60
130
60
130
ns
(Note 2)
Charge Injection
Q
INJ
0.2
1.0
0.2
1.0
0.2
1.0
pC
(Note 3) (Note 4)
Off Isolation
75
75
75
dB
At f = 100KHz, (Note 5)
Crosstalk
90
90
90
dB
At f = 100KHz, (Note 6)
Total Harmonic
T
HD
0.05
0.05
0.05
%
R
L
= 10K
Distortion
0.01
0.01
0.01
R
L
= 100K
Com/Out
COM(OFF)
Off Capacitance
OUT(OFF)
3.0
3.0
3.0
pF
Channel On
Capacitance
C
DS (ON)
5.7
5.7
5.7
pF
Pin to Pin
Capacitance
C
PP
0.5
0.6
0.25
pF
Notes:
1. Voltage on any terminal must be less than (V+) + 0.3V and greater than (V-) - 0.3V, at all times including before power is applied and V+ =V- = 0.0V. Vsupply
power supply needs to be sequenced on first on power turn-on and sequenced off last during power turn-off. 2. See Switching Time Test Circuit. Break-before-make time is
not guaranteed. Turn on and turn off time may overlap. 3. Guaranteed by design. 4. See Charge Injection Test Circuit 5. See Off Isolation Test Circuit 6. See Crosstalk
Test Circuit. 7. See switching time test circuit.
Analog Signal Range
V
A
0.0
+5.0
0.0
+5.0
V
On - Resistance
R
ON
195
280
195
280
V
A
= 0V
I
A
= 1mA
250
365
-40
C to +85
C
270
390
-55
C to +125
C
Change of On-Resistance
R
ON
20
20
%
from -V
S
to +V
S
Change of On-Resistance
R
ON
/
T
0.43
0.43
%/
C
with Temperature
R
ON
Match
2
2
%
Between Switches
Off Com Leakage
I
COML
50
100
50
100
pA
VCOM = +/-4.0V,VOUT = -/+4.0V
Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Off Out Leakage
I
OUTL
50
100
50
100
pA
VOUT = +/-4.0V,VCOM = -/+4.0V
Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
On Channel
I
D(ON)
50
100
50
100
pA
Leakage Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Input High Voltage
V
I
H
4.0
4.0
Logic "1"
Input Low Voltage
V
I
L
0.8
0.8
V
Logic "0"
Input High or
I
I
H
Input Low Current
I
I
L
10
10
nA
Supply Current
I
SUPPLY
0.01
1
0.01
1
A
DC ELECTRICAL CHARACTERISTICS
T
A
= 25
C V
+
= +5.0V, V- = GND = 0.0V unless otherwise specified
4211/4212/4213 (PC,SC)
4211/4212/4213 (DC)
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
ALD4211/ALD4212
Advanced Linear Devices
4
ALD4213
AC ELECTRICAL CHARACTERISTICS
T
A
= 25
C V
+
= +5.0V, V
- =
GND = 0.0V unless otherwise specified
4211/4212/4213 (PC)
4211/4212/4213 (DC)
4211/4212/4213 (SC)
The ALD4211/ALD4212/ALD4213 feature very high
precision due to these factors:
1. The analog switch has ultra low capacitive charge coupling
so that the charge stored on a 200pF sampling capacitor
is minimally affected.
2. With special charge balancing and charge cancellation
circuitry designed on chip, the ALD4211/ALD4212/
ALD4213 achieves ultra low charge injection of typically
only 0.2pC resulting in extremely low signal distortion to
the external circuit.
3. The analog switch switching transistors have pA leakage
currents minimizing the droop rate of the sampling circuit.
4. The internal switch timing allows for the analog switch to
turn off internally without producing any residual transistor
channel charge injection, which may affect external
circuits. With a low loss polystyrene or polypropylene
sampling capacitor, long data retention times are possible
without significant signal loss.
The ALD4211/ALD4212/ALD4213 CMOS analog switches,
when used with industry standard pinout connection, have
the input and output pins reversed with the signal source
input connected to OUT pins and COM pins used as output
pins. In this connection and when used with 1,000pF or
greater value capacitors, or when connected to a DC current
or resistive load, the switch would not be operating in an ultra
low charge injection mode. Typical charge injection, in this
case, would be 5pC as the pin to pin capacitive coupling
effect would dominate. In this connection, all the other
characteristics of the ALD4211/ALD4212/ALD4213 CMOS
analog switches remain the same.
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
Turn On
Delay time
t
ON
85
170
85
170
85
170
ns
(Note 7)
Turn Off
Delay time
t
OFF
46
90
46
90
46
90
ns
(Note 7)
Break-Before-Make
Delay Time
t
BD
15
40
15
40
15
40
ns
Charge Injection
Q
INJ
0.2
1.0
0.2
1.0
0.2
1.0
pC
(Note 3) (Note 4)
Off Isolation
75
75
75
dB
At f = 100KHz, (Note 5)
Crosstalk
90
90
90
dB
At f = 100KHz, (Note 6)
Total Harmonic
T
HD
0.05
0.05
0.05
%
R
L
= 10K
Distortion
0.01
0.01
0.01
R
L
= 100K
Com/Out
COM(OFF)
Off Capacitance
OUT(OFF)
3.0
3.0
3.0
pF
Channel On
C
DS (ON)
5.7
5.7
5.7
pF
Capacitance
Pin to Pin
C
PP
0.5
0.6
0.25
pF
Capacitance
ALD4211/ALD4212
Advanced Linear Devices
5
ALD4213
Analog Signal Range
V
A
0.0
3.0
0.0
3.0
V
On - Resistance
R
ON
500
700
500
700
V
A
= 0V
I
A
= 1mA
620
880
-40
C to +85
C
680
1000
-55
C to +125
C
Change of On-Resistance
R
ON
43
43
%
from -VS to +VS
Change of On-Resistance
R
ON
/
T
0.27
0.27
%/
C
with Temperature
R
ON
Match
2
2
%
Between Switches
Off Com
I
COML
50
100
50
100
pA
VCOM =
4.0V,VOUT = -/+4.0V
Leakage Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Off Out
I
OUTL
50
100
50
100
pA
VOUT =
4.0V,VCOM = -/+4.0V
Leakage Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Channel On
I
D(ON)
50
100
50
100
pA
Leakage Current
500
pA
-40
C to +85
C
4000
pA
-55
C to +125
C
Input High Voltage
V
I
H
4.0
4.0
Logic "1"
Input Low Voltage
V
I
L
0.8
0.8
V
Logic "0"
Input High or
I
I
H
Input Low Current
I
I
L
10
10
nA
Supply Current
I
SUPPLY
0.01
1
0.01
1
A
DC ELECTRICAL CHARACTERISTICS
T
A
= 25
C V
+
= +3.0V, V- = GND = 0.0V unless otherwise specified
4211/4212/4213 (PC,SC)
4211/4212/4213 (DC)
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
Turn On Delay time
t
ON
160
300
160
300
160
300
ns
(Note 7)
Turn Off Delay time
t
OFF
78
1500
78
150
78
150
ns
(Note 7)
Break-Before-Make
t
BD
20
82
20
82
20
82
ns
Delay Time
Charge Injection
Q
INJ
0.2
0.5
0.2
0.5
0.2
0.5
pC
(Note 3) (Note 4)
Off Isolation
75
75
75
dB
At f = 100KHz, (Note 5)
Crosstalk
90
90
90
dB
At f = 100KHz, (Note 6)
Total Harmonic
T
HD
0.05
0.05
0.05
%
R
L
= 10K
Distortion
0.01
0.01
0.01
R
L
= 100K
Com/Out
COM(OFF)
Off Capacitance
OUT(OFF)
3.0
3.0
3.0
pF
Channel On
C
DS (ON)
5.7
5.7
5.7
pF
Capacitance
Pin to Pin
C
PP
0.5
0.6
0.25
pF
Capacitance
AC ELECTRICAL CHARACTERISTICS
T
A
= 25
C V
+
= +3.0V, V
- =
GND = 0.0V unless otherwise specified
4211/4212/4213 (PC)
4211/4212/4213 (DC) 4211/4212/4213 (SC)
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