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MAX4666EPE

P1-P3P4-P6P7-P9P10-P12
0
200
100
300
400
500
600
010155 2025303540
ON/OFF TIMES vs. SUPPLY VOLTAGE
(SINGLE SUPPLY)
MAX4664 TOC10
V+ (V)
t
ON
, t
OFF
(ns)
t
ON
t
OFF
R
L
= 100Ω
C
L
= 35pF
V
COM
= 5V
0
80
60
100
120
140
160
-60 -20 0-40 20 40 60 80 100
ON/OFF TIMES vs. TEMPERATURE
(DUAL SUPPLIES)
MAX4664 TOC11
TEMPERATURE (°C)
t
ON,
t
OFF
(ns)
40
20
t
ON
t
OFF
R
L
= 100Ω
C
L
= 35pF
V
COM
= 10V
V+ = +15V
V- = -15V
0.01
1
0.1
10
100
1k
10k
-60 -20 0-40 20 40 60 80 100
SUPPLY CURRENT
vs. TEMPERATURE
MAX4664 TOC13
TEMPERATURE (°C)
I+, I- (pA)
I+
I-
V+ = +15V
V- = -15V
0
-100
0.01 1 100.1 100
FREQUENCY RESPONSE
MAX4664 TOC14
FREQUENCY (MHz)
LOSS (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
CROSSTALK
ON-PHASE
ON-LOSS
OFF-ISOLATION
50Ω IN AND OUT
V+ = +15V
V- = -15V
0
200
150
250
300
350
400
-60 -20 0-40 20 40 60 80 100
ON/OFF TIMES vs. TEMPERATURE
(SINGLE SUPPLY)
MAX4664 TOC12
TEMPERATURE (°C)
t
ON
, t
OFF
(ns)
100
50
t
ON
t
OFF
V
COM
= 5V
V+ = +12V
V- = GND
R
L
= 100Ω
C
L
= 35pF
MAX4664/MAX4665/MAX4666
5
Ω
, Quad, SPST,
CMOS Analog Switches
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
MAX4664/MAX4665/MAX4666
5
Ω
, Quad, SPST,
CMOS Analog Switches
8 _______________________________________________________________________________________
Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings, because stresses beyond the listed rat-
ings can cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, NO, or COM. If power-supply sequencing
is not possible, add two small signal diodes (D1, D2) in
series with supply pins (Figure 1). Adding diodes
reduces the analog signal range to one diode drop
below V+ and one diode drop above V-, but does not
affect the devices’ low switch resistance and low leak-
age characteristics. Device operation is unchanged,
and the difference between V+ and V- should not
exceed 44V. These protection diodes are not recom-
mended when using a single supply.
Off-Isolation at High Frequencies
In 50Ω systems, the high-frequency on-response of
these parts extends from DC to above 100MHz, with a
typical loss of -2dB. When the switch is turned off, how-
ever, it behaves like a capacitor, and off-isolation
decreases with increasing frequency. (Above 300MHz,
the switch actually passes more signal turned off than
turned on.) This effect is more pronounced with higher
source and load impedances.
COM_
V-
V+
NO_
* INTERNAL PROTECTION DIODES
D2
D1
-15V
+15V
MAX4664
MAX4665
MAX4666
*
*
*
*
Figure 1. Overvoltage Protection Using External Blocking
Diodes
NAME FUNCTION
MAX4664
1, 16, 9, 8
IN1, IN2,
IN3, IN4
Logic-Control Digital Inputs
PIN
2, 15,
10, 7
COM1, COM2,
COM3, COM4
Analog Switch, Common Terminals
3,14, 11, 6
NC1, NC2,
NC3, NC4
Analog Switch, Normally Closed Terminals
4 V-
Negative Analog Supply-Voltage Input. Connect to GND for single-
supply operation.
– NC2, NC3 Analog Switch, Normally Closed Terminal
– NO1, NO4 Analog Switch, Normally Open Terminal
–
NO1, NO2,
NO3, NO4
Analog Switch, Normally Open Terminals
13 V+ Positive Analog Supply Input
12 V
L
Logic-Supply Input
5 GND Ground
MAX4665
1, 16, 9, 8
2, 15,
10, 7
–
4
–
–
3,14, 11, 6
13
12
5
MAX4666
1, 16, 9, 8
2, 15,
10, 7
–
4
14, 11
3, 6
–
13
12
5
Pin Description
MAX4664/MAX4665/MAX4666
5
Ω
, Quad, SPST,
CMOS Analog Switches
_______________________________________________________________________________________ 9
t
r
< 20ns
t
f
< 20ns
50%
0
LOGIC
INPUT
V-
-15V
R
L
100Ω
NO_
OR NC_
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
O
= V
COM (
R
L
)
R
L
+ R
ON
SWITCH
INPUT
IN_
+3V
t
OFF
0
COM_
SWITCH
OUTPUT
0.9V
0
0.9V
0
t
ON
V
O
SWITCH
OUTPUT
LOGIC
INPUT
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V
L
V+
C
L
35pF
+5V
+15V
V
O
V
COM_
0
REPEAT TEST FOR EACH SWITCH. FOR LOAD
CONDITIONS, SEE
Electrical Characteristics.
MAX4664
MAX4665
MAX4666
Figure 2. Switching-Time Test Circuit
Above 5MHz, circuit board layout becomes critical,
and it becomes difficult to characterize the response of
the switch independent of the circuit. The graphs
shown in the
Typical Operating Characteristics
were
taken using a 50Ω source and load connected with
BNC connectors to a circuit board deemed “average,”
that is, designed with isolation in mind, but not using
stripline or other special RF circuit techniques. For criti-
cal applications above 5MHz, use the MAX440,
MAX441, and MAX442, which are fully characterized
up to 160MHz.
V
GEN
GND
NC_ OR
C
L
V
O
-15V
V-
V+
V
O
V
IN
OFF
ON
OFF
∆V
O
Q = (∆V
O
)(C
L
)
COM_
+5V
V
IN
DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
OFF
ON
OFF
V
IN
V
IN
= +3V
+15V
R
GEN
IN_
V
L
MAX4664
MAX4665
MAX4666
NO_
Figure 3. Charge-Injection Test Circuit
P1-P3P4-P6P7-P9P10-P12

MAX4666EPE

Mfr. #:
Buy MAX4666EPE
Manufacturer:
Maxim Integrated
Description:
IC SW QUAD ANLG 5 OHM SPST 16DIP
Lifecycle:
New from this manufacturer.
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