MAX322ESA [MAXIM]
Precision, Dual-Supply, SPST Analog Switches; 精密，双电源， SPST模拟开关
| 型号： | MAX322ESA |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Precision, Dual-Supply, SPST Analog Switches |
| 文件： | 总8页 (文件大小：112K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0350; Rev 0; 12/94
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
01/MAX32
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX320/MAX321/MAX322 a re p re c is ion, d ua l,
SPST analog switches designed to operate from ±3V to
±8V dual supplies. The MAX320 has two normally open
(NO) s witc he s a nd the MAX321 ha s two norma lly
closed (NC) switches. The MAX322 has one NO and
one NC switch. Low power consumption (1.25mW)
makes these parts ideal for battery-powered equip -
ment. They offer low leakage currents (100pA max) and
♦ Low On-Resistance, 35Ω max (16Ω typical)
♦ R
♦ R
Matching Between Channels <2Ω
Flatness <4Ω
ON
ON
♦ Guaranteed Charge Injection <5pC
♦ Bipolar Supply Operation (±3V to ±8V)
♦ Low Power Consumption, <1.25mW
fast switching speeds (t
max).
= 150ns max, t
= 100ns
ON
OFF
♦ Low Leakage Current Over Temperature,
<2.5nA at +85°C
The MAX320 series, powered from ±5V supplies, offers
35Ω ma x on-re s is ta nc e (R ), 2Ω ma x ma tc hing
♦ Fast Switching, t
<150ns, t
<100ns
ON
ON
OFF
between channels, and 4Ω max R
flatness.
ON
♦ Guaranteed Break-Before-Make (MAX322 only)
These switches also offer 5pC max charge injection
and a minimum of 2000V ESD protection per Method
3015.7.
______________Ord e rin g In fo rm a t io n
For equivalent devices specified for single-supply oper-
ation, see the MAX323/MAX324/MAX325 data sheet.
For q ua d ve rs ions of the s e s witc he s , s e e the
MAX391/MAX392/MAX393 data sheet.
PART
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 SO
MAX320CPA
MAX320CSA
MAX320CUA
MAX320C/D
MAX320EPA
MAX320ESA
MAX320EJA
MAX320MJA
0°C to +70°C
0°C to +70°C
8 µMAX
0°C to +70°C
Dice*
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
8 Plastic DIP
8 SO
________________________Ap p lic a t io n s
Battery-Operated Systems Sample-and-Hold Circuits
8 CERDIP**
8 CERDIP**
Heads-Up Displays
Guidance and Control Systems
Audio and Video Switching Military Radios
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability.
Test Equipment
Communications Systems
PBX, PABX
±5V DACs and ADCs
_____________________P in Co n fig u ra t io n s /Fu n c t io n a l Dia g ra m s /Tru t h Ta b le s
TOP VIEW
MAX320
MAX321
MAX322
8
7
6
5
8
7
6
5
8
7
6
5
1
2
3
4
1
2
3
4
1
2
3
4
NO1
COM1
IN2
NC1
COM1
IN2
NO1
COM1
IN2
V+
V+
V+
IN1
IN1
IN1
COM2
NO2
COM2
NC2
COM2
NC2
V-
V-
V-
DIP/SO/µMAX
DIP/SO/µMAX
DIP/SO/µMAX
MAX320
MAX321
MAX322
SWITCH 2
LOGIC
SWITCH 1
LOGIC
SWITCH
LOGIC
SWITCH
0
1
OFF
ON
0
1
ON
0
1
OFF
ON
ON
OFF
OFF
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V-
µMAX (derate 4.10mW/°C above +70°C) .....................330mW
V+ ................................................................(V- - 0.3V) to +17V
IN_, COM_, NC_, NO_ (Note 1).........(V- - 0.3V) to (V+ + 0.3V)
Continuous Current (any terminal)......................................30mA
Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ..............................100mA
ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation
CERDIP (derate 8.00mW/°C above +70°C)..................640mW
Operating Temperature Ranges
MAX32_C_ _ ........................................................0°C to +70°C
MAX32_E_ _......................................................-40°C to +85°C
MAX32_MJA ...................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
Narrow SO (derate 5.88mW/°C above +70°C) .............471mW
Note 1: Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode 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
(V+ = +5V ±10%, V- = -5V ±10%, V
= 3.5V, V = 2.5V, T = T
to T , unless otherwise noted.)
MAX
INH
INL
A
MIN
MIN
TYP
(Note 2)
MAX
PARAMETER
ANALOG SWITCH
SYMBOL
CONDITIONS
UNITS
V
,
COM
01/MAX32
Analog Signal Range
V
NO
,
(Note 3)
V-
V+
V
V
NC
C, E
M
16
16
35
30
T
=
A
V+ = 4.5V,
V- = -4.5V,
+25°C
On-Resistance
R
Ω
ON
I
= 1.0mA,
COM
T
A
= T
to T
MAX
45
MIN
V
NO
or V = ±3.5V
NC
V+ = 5V, V- = -5V,
= 1.0mA,
T
= +25°C
0.3
1
2
4
4
6
A
On-Resistance Match Between
Channels (Note 4)
∆R
I
Ω
Ω
ON
COM
V
NO
or V = ±3V
T
A
= T
to T
NC
MIN
MAX
MAX
V+ = 5V, V- = -5V,
I = 1.0mA,
T = +25°C
A
On-Resistance Flatness
(Note 5)
R
FLAT(ON) COM
V
NO
or V = ±3V
T
A
= T
to T
NC
MIN
V+ = 5.5V,
V- = -5.5V,
T
= +25°C
-0.1
0.01
0.01
0.05
0.1
A
I
NO(OFF)
or
NC(OFF)
NO or NC Off Leakage Current
(Note 6)
nA
nA
nA
V
COM
= ±4.5V,
C, E
-5
5
T
= T
A
MIN
I
±
V
NO
or V
=
4.5V
NC
to T
MAX
M
-40
40
V+ = 5.5V,
V- = -5.5V,
T
A
= +25°C
-0.1
0.1
COM Off Leakage Current
(Note 6)
I
COM(OFF)
V
COM
= ±4.5V,
C, E
M
-5
5
T
= T
A
MIN
±
V
NO
or V
=
4.5V
NC
to T
MAX
-40
40
V+ = 5.5V,
V- = -5.5V,
T
A
= +25°C
-0.2
0.2
COM On Leakage Current
(Note 6)
I
COM(ON)
V
COM
= ±4.5V,
C, E
M
-10
-50
10
50
T
= T
A
MIN
V
NO
or V = ±4.5V
NC
to T
MAX
2
_______________________________________________________________________________________
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
01/MAX32
ELECTRICAL CHARACTERISTICS
(V+ = +5V ±10%, V- = -5V ±10%, V
= 3.5V, V = 2.5V, T = T
to T , unless otherwise noted.)
MAX
INH
INL
A
MIN
MIN
TYP
(Note 2)
MAX
PARAMETER
LOGIC INPUT
SYMBOL
CONDITIONS
UNITS
Input Current with Input
Voltage High
I
-0.5
0.005
0.005
0.5
0.5
µA
µA
V
INH
Input Current with Input
Voltage Low
I
-0.5
3.5
INL
V+ = 5V ±10%, V- ≤ 0V
3V < V+ < 8V, V- ≤ 0V
V+ = 5V ±10%, V- ≤ 0V
3V < V+ < 8V, V- ≤ 0V
Input Voltage High
V
INH
V+ - 1.5
V+ - 2.5
65
2.5
Input Voltage Low
DYNAMIC
V
V
INL
T
= +25°C
150
175
100
150
A
Turn-On Time
t
V
= ±3V, Figure 2
= ±3V, Figure 2
ns
ns
ON
COM
T
A
= T
to T
MIN
MAX
MAX
T
A
= +25°C
35
Turn-Off Time
t
V
COM
OFF
T
A
= T
to T
MIN
Break-Before-Make
Time Delay (Note 3)
t
MAX322 only, R = 300Ω, C = 35pF, Figure 3
2
5
2
ns
D
L
L
Charge Injection
(Note 3)
C
R
= 1.0nF, V
= 0V,
L
GEN
Q
T
= +25°C
= +25°C
= +25°C
5
pC
dB
dB
A
= 0Ω, Figure 4
GEN
R
= 50Ω, C = 5pF,
L
L
Off Isolation (Note 7)
Crosstalk (Note 8)
OIRR
T
A
72
85
f = 1MHz, Figure 5
R
= 50Ω, C = 5pF,
L
L
T
A
f = 1MHz, Figure 6
f = 1MHz, Figure 7
f = 1MHz, Figure 7
f = 1MHz, Figure 8
NC or NO Capacitance
COM Off Capacitance
COM On Capacitance
SUPPLY
C
T
= +25°C
= +25°C
= +25°C
9
9
pF
pF
pF
(OFF)
A
C
C
T
A
COM(OFF)
COM(ON)
T
A
22
Power-Supply Range
±2.7
-125
±8
V
V+ = 5.5V, V- = -5.5V,
T
= +25°C
80
80
125
A
Positive Supply Current
I+
I-
V
IN
= 0V or V+,
µA
T
A
= T
to T
-200
-125
-200
200
125
200
MIN
MAX
all channels on or off
V+ = 5.5V, V- = -5.5V,
T
A
= +25°C
Negative Supply
Current
V
IN
= 0V or V+,
µA
T
A
= T
to T
MIN
MAX
all channels on or off
Note 2: The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in
this data sheet.
Note 3: Guaranteed by design.
Note 4: ∆R
= ∆R
max - ∆R
min.
ON
ON
ON
Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Note 6: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25°C.
Note 7: Off Isolation = 20 log
[ V
COM
⁄ (V
V
) ], V
= output, V
V
= input to off switch.
10
NC or NO
COM
NC or NO
Note 8: Between any two switches.
_______________________________________________________________________________________
3
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
__________________________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s
(V+ = +5V, V- = -5V, T = +25°C, unless otherwise noted.)
A
ON-RESISTANCE MATCH vs. VOLTAGE
AT COM PIN (OVER TEMPERATURE)
ON-RESISTANCE vs. VOLTAGE AT COM PIN
(OVER TEMPERATURE)
ON-RESISTANCE vs. VOLTAGE AT COM PIN
30
25
20
0.50
0.45
0.40
30
A: T = -55°C
A
V± = ±3V
A
B
B: T = +25°C
A
25
20
15
C: T = +85°C
A
D: T = +125°C
A
0.35
0.30
0.25
V± = ±5V
V± = ±8V
C
D
15
10
0.20
0.15
10
5
D
B
A: T = +125°C
A
C
A
B: T = +85°C
A
0.10
0.05
0
5
0
C: T = +25°C
A
D: T = -55°C
A
0
-5 -4 -3 -2 -1
0
1
2
3
4 5
-2
-8 -6 -4
0
2
4
6
8
-5
-3
-1
1
3
5
V
COM
(V)
V
COM
(V)
V
COM
(V)
CHARGE INJECTION vs.
VOLTAGE AT COM PIN
ON LEAKAGE CURRENT vs. TEMPERATURE
OFF LEAKAGE CURRENT vs. TEMPERATURE
20
15
10
5
100
10
100
10
V+ = +5.5V, V- = -5.5V
V+ = +5.5V, V- = -5.5V
V
= ±4.5V
V
= ±4.5V, V or V = ±4.5V
COM
or V
COM
NC NO
±
01/MAX32
V
= 4.5V
NC
NO
1
1
0
0.1
0.1
-5
0.01
0.001
0.0001
0.01
0.001
0.0001
-10
-15
-20
-5 -4 -3 -2 -1
V
0
1
2
3
4
5
-55 -35 -15
5
25 45 65 85 105 125
-55 -35 -15
5
25 45 65 85 105 125
(V)
TEMPERATURE (°C)
TEMPERATURE (°C)
COM
SUPPLY CURRENT vs. TEMPERATURE
140
120
100
80
60
40
20
0
-55 -35 -15
5
25 45 65 85 105 125
TEMPERATURE (°C)
4
_______________________________________________________________________________________
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
01/MAX32
_____________________P in De s c rip t io n
POSITIVE SUPPLY
PIN
NAME
FUNCTION
D1
V+
NO1
Normally Open Analog
Switch Terminal
(MAX320/MAX322)
1
NC1
(MAX321)
Normally Closed Analog
Switch Terminal
NO
COM
Analog Switch Common
Terminals
2, 6
COM1, COM2
V
g
3, 7
4
IN2, IN1
V-
Logic Inputs
Negative Supply
V-
MAX320
MAX321
MAX322
NO2
(MAX320)
Normally Open Analog
Switch Terminal
D2
5
8
NEGATIVE SUPPLY
NC2
Normally Closed Analog
Switch Terminal
(MAX321/MAX322)
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
V+
Positive Supply
this sequencing is not possible, and if the analog or
logic inputs are not current-limited to <30mA, add two
small signal diodes (D1, D2) as shown in Figure 1.
Adding protection diodes reduces the analog signal
range to a diode drop (about 0.7V) below V+ for D1,
and a diode drop above V- for D2. Leakage is not
affected by adding the diodes. On-resistance increas-
es by a small amount at low supply voltages. Maximum
supply voltage (V- to V+) must not exceed 17V.
__________Ap p lic a t io n s In fo rm a t io n
Lo g ic Le ve ls
Calculate the logic thresholds typically as follows: V
=
IH
(V+ - 1.5V) and V = (V+ - 2.5V).
IL
Power-supply consumption is minimized when IN1 and
IN2 are driven with logic-high levels equal to V+ and logic-
low levels well below the calculated V of (V+ - 2.5V). IN1
IL
and IN2 can be driven to V- without damage.
Adding protection diode D1 causes the logic thresh-
olds to be shifted relative to the positive power-supply
rail. This can be significant when low positive supply
voltages (+5V or less) are used. Driving IN1 and IN2 all
the way to the supply rails (i.e., to a diode drop higher
than the V+ pin or a diode drop lower than the V- pin) is
always acceptable.
An a lo g S ig n a l Le ve ls
Analog signals that range over the entire supply voltage
(V- to V+) can be switched, with very little change in on-
resistance over the entire voltage range (see Typical
Operating Characteristics). All switches are bidirec-
tional, so NO_, NC_, and COM_ pins can be used as
either inputs or outputs.
The protection diodes D1 and D2 also protect against
some overvoltage situations. With the circuit of Figure 1,
if the supply voltage is below the absolute maximum
rating and if a fault voltage up to the absolute maximum
rating is applied to an analog signal pin, no damage
will result. For example, with ±5V supplies, analog sig-
nals up to ±8.5V will not damage the circuit of Figure 1.
If only a single fault signal is present, the fault voltage
can rise to +12V or to -12V without damage.
P o w e r-S u p p ly S e q u e n c in g
a n d Ove rvo lt a g e P ro t e c t io n
Do not exceed the absolute maximum ratings, because
stresses beyond the listed ratings may cause perma-
nent damage to the devices.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+, followed by V-,
before applying analog signals or logic inputs, especial-
ly if the analog or logic signals are not current-limited. If
_______________________________________________________________________________________
5
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
______________________________________________Te s t Circ u it s /Tim in g Dia g ra m s
MAX320
+5V
t
< 20ns
r
MAX321
MAX322
t < 20ns
f
LOGIC
INPUT
SWITCH
OUTPUT
50%
V+
COM
IN
NO
SWITCH
INPUT
V
COM
V
OUT
or NC
R
300Ω
C
L
L
t
OFF
35pF
V
OUT
0.9 x V
0.9 x V
OUT
0UT
V-
LOGIC
INPUT
SWITCH
OUTPUT
0V
t
ON
-5V
C INCLUDES FIXTURE AND STRAY CAPACITANCE.
L
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
R
L
V
= V
OUT COM
(
)
R + R
ON
L
Figure 2. Switching Time
+5V
MAX322
COM1
LOGIC
INPUT
50%
V+
V
OUT1
NO1
NC2
01/MAX32
V
COM1
= +3V
V
OUT2
COM2
IN
C
35pF
R
300Ω
L1
SWITCH
L1
V
COM2
= +3V
0.9 x V
0UT1
OUTPUT 1
(V
R
300Ω
0V
0V
L2
)
OUT1
C
L2
35pF
LOGIC
INPUT
SWITCH
OUTPUT 2
V-
0.9 x V
OUT2
(V
)
OUT2
-5V
t
t
D
D
C INCLUDES FIXTURE AND STRAY CAPACITANCE.
L
Figure 3. Break-Before-Make Interval (MAX322 only)
+5V
∆V
OUT
MAX320
MAX321
MAX322
V+
V
OUT
R
GEN
COM
NC
V
OUT
IN
or NO
OFF
OFF
OFF
C
L
ON
ON
V
GEN
V-
IN
-5V
OFF
IN
V
Q = (∆V )(C )
IN
OUT
L
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 4. Charge Injection
_______________________________________________________________________________________
6
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
01/MAX32
_________________________________Te s t Circ u it s /Tim in g Dia g ra m s (c o n t in u e d )
MAX320
MAX321
MAX322
MAX320
MAX321
MAX322
+5V
V+
+5V
V+
10nF
10nF
SIGNAL
GENERATOR 0dBm
SIGNAL
GENERATOR 0dBm
50Ω
COM
N01
IN2
COM1
IN1
IN
V
IN
V
IN
0V or 2.4V
ANALYZER
NC
COM
ANALYZER
or NO
COM2
N02
N.C.
V-
V-
R
L
R
L
10nF
10nF
-5V
-5V
Figure 5. Off Isolation
Figure 6. Crosstalk
+5V
+5V
V+
MAX320
MAX321
MAX322
10nF
10nF
MAX320
MAX321
MAX322
V+
COM
COM
CAPACITANCE
METER
IN
IN
V
IN
V
IN
CAPACITANCE
METER
f = 1MHz
NC or
NO
NC or
NO
f = 1MHz
V-
V-
10nF
10nF
-5V
-5V
Figure 8. Channel-On Capacitance
Figure 7. Channel-Off Capacitance
_______________________________________________________________________________________
7
P re c is io n , Du a l-S u p p ly, S P S T
An a lo g S w it c h e s
__Ord e rin g In fo rm a t io n (c o n t in u e d )
___________________Ch ip To p o g ra p h y
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
NO1 (MAX320/2)
NC1 (MAX321)
MAX321CPA
MAX321CSA
MAX321CUA
MAX321C/D
MAX321EPA
MAX321ESA
MAX321EJA
MAX321MJA
MAX322CPA
MAX322CSA
MAX322CUA
MAX322C/D
MAX322EPA
MAX322ESA
MAX322EJA
MAX322MJA
V+
8 µMAX
COM1
IN1
Dice*
8 Plastic DIP
8 SO
0. 075"
(1. 90mm)
8 CERDIP**
8 CERDIP**
8 Plastic DIP
8 SO
IN2
V-
COM2
NO2 (MAX320)
NC2 (MAX321/2)
8 µMAX
Dice*
8 Plastic DIP
8 SO
0. 055"
8 CERDIP**
8 CERDIP**
(1. 40mm)
TRANSISTOR COUNT: 91
SUBSTRATE CONNECTED TO V+
* Contact factory for dice specifications.
** Contact factory for availability.
01/MAX32
________________________________________________________P a c k a g e In fo rm a t io n
INCHES
MILLIMETERS
DIM
MIN
0.036
MAX
0.044
0.008
0.014
0.007
0.120
0.120
MIN
0.91
0.10
0.25
0.13
2.95
2.95
MAX
1.11
0.20
0.36
0.18
3.05
3.05
A
C
A1 0.004
α
A
B
C
D
E
e
0.010
0.005
0.116
0.116
0.101mm
0.004 in
e
B
A1
L
0.0256
0.65
H
L
0.188
0.016
0°
0.198
0.026
6°
4.78
0.41
0°
5.03
0.66
6°
α
E
H
8-PIN µMAX
MICROMAX SMALL OUTLINE
PACKAGE
D
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8
___________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 (4 0 8 ) 7 3 7 -7 6 0 0
© 1994 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
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