Maxim MAX4678EPE 2â ¦, quad, spst, cmos analog switch Datasheet

19-1713; Rev 0; 4/00
2Ω, Quad, SPST, CMOS Analog Switches
Features
♦ On-Resistance 1.6Ω max
The MAX4677 has four normally closed (NC) switches,
and the MAX4678 has four normally open (NO) switches. The MAX4679 has two NC and two NO switches
and features guaranteed break-before-make switching.
♦ -3dB Bandwidth: 66MHz
♦ On-Resistance Flatness 0.4Ω max
♦ On-Resistance Matching 0.3Ω max
♦ Dual ±2.7V to ±5.5V or Single +2.7V to +11V
Supply Range
♦ TTL/CMOS-Logic Compatible
♦ Crosstalk -84dB at 1MHz
♦ Off-Isolation -65dB at 1MHz
♦ Rail-to-Rail Signal Range
The MAX4677/MAX4678/MAX4679 operate from either
a single +2.7V to +11V or dual ±2.7V to ±5.5V supplies,
making them ideal for use in digital card applications
and single-ended 75Ω systems.
These devices feature a separate logic supply input
that operates from +2.7V to V+, allowing independent
logic and analog supplies.
Ordering Information
PART
MAX4677EUE
________________________Applications
Reed Relay Replacement
Test Equipment
Communications Systems
Audio Signal Routing
Avionics
ADC Systems
Data-Acquisition Systems
PBX/PABX Systems
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
16 TSSOP
MAX4677EPE
-40°C to +85°C
16 DIP
MAX4678EUE
-40°C to +85°C
16 TSSOP
MAX4678EPE
-40°C to +85°C
16 DIP
MAX4679EUE
-40°C to +85°C
16 TSSOP
MAX4679EPE
-40°C to +85°C
16 DIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
______________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1
16
IN2
COM1 2
15
COM2
NC1 3
14 NC2
V- 4
MAX4677
GND 5
NC4 6
COM2
14
NO2
NO1
3
V- 4
12
VL
GND 5
11
NC3
NO4 6
IN4 8
9
DIP/TSSOP
MAX4677
LOGIC
SWITCH
ON
OFF
IN2
15
V+
10
0
1
16
13
7
COM4
IN1 1
COM1 2
COM3
IN3
MAX4678
16
IN2
15
COM2
14
NC2
NO1
3
13 V+
V- 4
12 VL
GND 5
11 NO3
NO4 6
10 COM3
COM4 7
IN1 1
COM1 2
9
IN4 8
IN3
0
1
OFF
ON
MAX4679
12 VL
11 NC3
10 COM3
COM4 7
9
IN4 8
DIP/TSSOP
MAX4678
LOGIC
SWITCH
13 V+
IN3
DIP/TSSOP
LOGIC
MAX4679
SWITCHES
1, 4
SWITCHES
2, 3
0
1
OFF
ON
ON
OFF
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX4677/MAX4678/MAX4679
General Description
The MAX4677/MAX4678/MAX4679 quad analog switches feature 1.6Ω max on-resistance (RON) when operating from a dual ±5V supply. RON is matched between
channels to 0.3Ω max and is flat (0.4Ω max) over the
specified signal range. Each switch can handle Rail-toRail® analog signals. Off-leakage current is 0.1nA at
+25°C. These switches are ideal in low-distortion applications and are the preferred solution over mechanical
relays in automated test equipment. They have low
power requirements, require less board space, and are
more reliable than mechanical relays.
MAX4677/MAX4678/MAX4679
2Ω, Quad, SPST, CMOS Analog Switches
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +12V
V- to GND ...............................................................+0.3V to -12V
V+ to V- ................................................................................+12V
VL, IN_ to GND (Note 1) ...............................-0.3V to (V+ + 0.3V)
VCOM_, VNC_, VNO_ (Note 1)............................................V- to V+
Current (any terminal).......................................................±50mA
Continuous Current (COM_, NC_, NO_).........................±100mA
Peak Current (COM_, NC_, NO_
pulsed at 1ms 10% duty cycle) .................................±200mA
Continuous Power Dissipation (TA = +70°C)
16-Pin Plastic DIP (derate 10.5mW/°C above +70°C)..842mW
16-Pin TSSOP (derate 5.7mW/°C above +70°C)..........457mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
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–Dual Supplies
(V+ = +5V ±10%, V- = -5V ±10%, VL = +2.7V to V+, GND = 0, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Input Voltage Range
On-Resistance
VCOM_,
VNO_, VNC_
RON
On-Resistance Match
Between Channels
(Note 3)
∆RON
On-Resistance Flatness
(Note 4)
RFLAT
NC_ or NO_ Off-Leakage
Current (Note 5)
COM_ Off-Leakage
Current (Note 5)
COM_ On-Leakage
Current (Note 5)
IN_(OFF)
ICOM_(OFF)
ICOM_(ON)
VV+ = 4.5V, V- = -4.5V,
ICOM_ = 50mA,
VNO_ or VNC_ = ±3.3V
TA = +25°C
V+ = 4.5V, V- = -4.5V,
ICOM_ = 50mA, VNO_ or
VNC_ = ±3.3V
TA = +25°C
1.2
TA = TMIN to TMAX
0.2
TA = TMIN to TMAX
0.3
Ω
0.5
TA = +25°C
V+ = +5.5V, V- = -5.5V,
VNO_ or VNC_ = ±4.5V,
VCOM_ = +4.5V
TA = +25°C
-1
TA = TMIN to TMAX
-10
TA = +25°C
-1
TA = TMIN to TMAX
-10
TA = +25°C
-2
V+ = +5.5V, V- = -5.5V,
VCOM_ = ±4.5V,
VNO_ or VNC_ = ±4.5V or
floating
Ω
2
V+ = 4.5V, V- = -4.5V,
ICOM_ = 50mA, VNO_ or
VNC_ = ±3.3V, 0
V+ = +5.5V, V- = -5.5V,
VNO_ or VNC_ = ±4.5V,
VCOM_ = +4.5V
1.6
0.2
TA = TMIN to TMAX
0.4
Ω
0.5
0.1
1
nA
10
0.1
1
nA
10
0.2
2
nA
TA = TMIN to TMAX
-25
25
LOGIC INPUT
Input Logic High
VIH
VL = V+
Input Logic Low
VIL
VL = V+
Input Leakage Current
IIN
VL = V+
2
2.4
-1
V
0.005
_______________________________________________________________________________________
0.8
V
1
µA
2Ω, Quad, SPST, CMOS Analog Switches
(V+ = +5V ±10%, V- = -5V ±10%, VL = +2.7V to V+, GND = 0, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
POWER SUPPLY
Positive Supply Voltage
V+
+2.7
+5.5
Negative Supply Voltage
V-
-2.7
-5.5
V
Logic Supply Voltage
VL
2.7
V+
V
Positive Supply Current
I+
IN_ = GND or VL
1
µA
Negative Supply Current
I-
IN_ = GND or VL
-1
µA
Logic Supply Current
IL
IN_ = GND or VL
1
µA
IN_ = 0 or V+, V+ = 5.5V, V- = -5.5V
1
µA
Ground Current
DYNAMIC
IGND
Turn-On Time
tON
Turn-Off Time
tOFF
Break-Before-Make Delay
Charge Injection
tBBM
Q
Off-Isolation
On-Capacitance
350
ns
TA = TMIN to TMAX
500
TA = +25°C
110
150
ns
TA = TMIN to TMAX
Figure 3, MAX4679 only, RL = 300Ω,
CL = 35pF
350
5
ns
pC
RL = 50Ω, CL = 5pF, f = 1MHz, Figure 5a
-65
dB
RL = 50Ω, CL = 5pF, f = 1MHz, Figure 6a
-84
dB
RS = 50Ω, RL = 50Ω, Figure 7a
66
MHz
C(N_OFF)
f = 1MHz, Figure 8
85
pF
C(COMOFF)
f = 1MHz, Figure 8
85
pF
C(ON)
f = 1MHz, Figure 8
350
pF
BW
COM Off-Capacitance
200
85
VISO
NC or NO OffCapacitance
V+ = +4.5V, V- = -4.5V,
VNC_ or VNO_ = ±3.3V,
VL = V+, Figure 2
TA = +25°C
RGEN = 0, CL = 1nF, VGEN = 0, Figure 4
Crosstalk
-3dB Bandwidth
V+ = +4.5V, V- = -4.5V,
VNC_ or VNO_= ±3.3V,
VL = V+, Figure 2
0.001
_______________________________________________________________________________________
3
MAX4677/MAX4678/MAX4679
ELECTRICAL CHARACTERISTICS–Dual Supplies (continued)
MAX4677/MAX4678/MAX4679
2Ω, Quad, SPST, CMOS Analog Switches
ELECTRICAL CHARACTERISTICS–Single Supply
(V+ = +5V ±10%, V- = 0, VL = +2.7V to V+, GND = 0, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Input Voltage Range
VCOM_,
VNO_, VNC_
0
RON
V+ = +4.5V, ICOM_ = 50mA,
VNO_ or VNC_ = 3.3V
On-Resistance Match
Between Channels
(Note 3)
∆RON
V+ = +4.5V, ICOM_ = 50mA,
VNO_ or VNC_ = 3.3V
On-Resistance Flatness
(Note 4)
RFLAT
On-Resistance
NC_ or NO_ OffLeakage Current
(Note 5)
IN_(OFF)
COM_ Off-Leakage
Current (Note 5)
ICOM_(OFF)
COM_ On-Leakage
Current (Note 5)
ICOM_(ON)
TA = +25°C
1.8
TA = TMIN to TMAX
2.7
3.5
TA = +25°C
0.05
TA = TMIN to TMAX
0.15
Ω
Ω
0.3
V+ = +4.5V, ICOM_ = 50mA,
VNO_ or VNC_ = 3.3V, 1.5V
TA = +25°C
0.15
V+ = +5.5V;
VNO_ or VNC_ = 4.5V, 1V;
VCOM_ = 1V, 4.5V
TA = +25°C
-1
TA = TMIN to TMAX
-10
V+ = +5.5V;
VNO_ or VNC_ = 4.5V, 1V;
VCOM_ = 1V, 4.5V
TA = +25°C
-1
TA = TMIN to TMAX
-10
V+ = +5.5V; VCOM_ = 1V,
4.5V; VNO_ or VNC_ = 1V,
4.5V, or floating
TA = +25°C
-2
TA = TMIN to TMAX
-25
TA = TMIN to TMAX
0.25
0.4
0.1
Ω
1
nA
10
0.1
1
nA
10
0.2
2
nA
25
LOGIC INPUT
Input Low Voltage
VIL
VL = V+
Input High Voltage
VIH
VL = V+
2.4
Input Leakage Current
IIN
VL = V+
-1
0.8
V
1
µA
V
0.005
POWER SUPPLY
Positive Supply Voltage
V+
2.7
6
V
Logic Supply Voltage
VL
2.7
V+
V
Positive Supply Current
l+
VIN_ = 0 or VL, VL = V+
1
µA
Logic Supply Current
IL
VIN_ = 0 or VL, V+ = 5.5V
1
µA
IGND
VIN_ = 0 or VL, V+ = 5.5V
1
10
µA
600
1000
Ground Current
1
DYNAMIC
Turn-On Time
Turn-Off Time
4
tON
tOFF
VL = V+, V+ = +4.5V; VNC_
or VNO_ = 3.3V, RL = 300Ω,
CL = 35pF, Figure 2
VL = V+, V+ = +4.5V; VNC_
or VNO_ = 3.3V, RL = 300Ω,
CL = 35pF, Figure 2
TA = +25°C
ns
TA = TMIN to TMAX
TA = +25°C
1400
120
165
ns
TA = TMIN to TMAX
_______________________________________________________________________________________
400
2Ω, Quad, SPST, CMOS Analog Switches
(V+ = +5V ±10%, V- = 0, VL = +2.7V to V+, GND = 0, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
Break-Before- Make
Delay
CONDITIONS
MAX4679 only, RL = 300Ω, CL = 35pF, Figure 3
tBBM
Charge Injection
Q
Off-Isolation
On-Capacitance
UNITS
5
ns
9
pC
-65
dB
RL = 50Ω, CL= 5pF, f = 1MHz, Figure 6b
-84
dB
RS = 50Ω, RL = 50Ω, Figure 7b
63
MHz
C(N_OFF)
f = 1MHz, Figure 8
85
pF
C(COMOFF)
f = 1MHz, Figure 8
85
pF
C(ON)
f = 1MHz, Figure 8
350
pF
BW
COM Off-Capacitance
MAX
RL = 50Ω, CL = 5pF, f = 1MHz, Figure 5b
VISO
NC or NO OffCapacitance
TYP
RGEN = 0, CL = 1nF, VGEN = 0, Figure 4
Crosstalk
-3dB Bandwidth
MIN
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: ∆RON = RON(MAX) - RON(MIN).
Note 4: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 5: Leakage parameters are 100% tested at maximum-rated hot operating temperature and the highest supply voltage, and
guaranteed by correlation at +25°C.
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
1.6
V+ = 2.5V
4.0
1.4
1.2
1.0
V± = ±3V
0.8
0.6
3.0
0
0
-3
-1
1
VCOM (V)
3
5
0.8
TA = -40°C
0.6
0.4
1.0
0.5
-5
V+ = 5V
V+ = 4V
2.5
0.2
TA = +85°C
TA = +25°C
1.5
V± = ±5V
1.2
1.0
2.0
V± = ±4V
0.4
1.4
V+ = 3V
3.5
RON (Ω)
RON (Ω)
V- = 0
4.5
RON (Ω)
V± = ±2.5V
MAX4677/8/9-02
5.0
MAX4677/8/9-01
2.0
1.8
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
MAX4677/8/9-03
ON-RESISTANCE vs. VCOM
(DUAL SUPPLY)
V+ = +5V
V- = -5V
VL = V+
0.2
V+ = 9V
V+ = 12V
0
0
1
2
3
VCOM (V)
4
5
-5
-4
-3
-2
-1
0
1
2
3
4
5
VCOM (V)
_______________________________________________________________________________________
5
MAX4677/MAX4678/MAX4679
ELECTRICAL CHARACTERISTICS–Single Supply (continued)
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
ON-/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
0.1
LEAKAGE CURRENT (nA)
2.0
TA = +25°C
TA = -40°C
1.0
0.5
V+ = +5V
V- = 0
VL = V+
0
0.01
ON-LEAKAGE
0.001
OFF-LEAKAGE
0.0001
0.00001
0.000001
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
-40
-20
0
VCOM (V)
CHARGE INJECTION
vs. VCOM
tON, tOFF vs. SUPPLY VOLTAGE
(DUAL SUPPLIES)
80
215
50
40
325
tON
275
225
V+ = +5V
V- = 0
30
20
-2
-1
0
1
2
3
4
tOFF
75
±1.5 ±2.0 ±2.5 ±3.0 ±3.5 ±4.0 ±4.5 ±5.0
5
-40
-20
0
20
40
60
80
VCOM (V)
V+, V- (V)
TEMPERATURE (°C)
tON, tOFF vs. LOGIC SUPPLY
INPUT THRESHOLD vs. LOGIC SUPPLY
POWER-SUPPLY CURRENT
vs. TEMPERATURE
225
THRESHOLD VOLTAGE (V)
tON
175
125
2.0
100
1000
MAX46778/9-11
275
V+ = +5V
V- = -5V
100
10
VTH (RISING)
1.5
I+, I-, IL (nA)
V+ = +5V
V- = -5V
MAX4677/8/9-10
2.5
MAX4677/8/9-09
325
-3
155
95
75
-4
175
115
tOFF
125
0
tON
135
175
10
-5
80
195
TIME (ns)
TIME (ns)
60
60
V+ = +5V
V- = -5V
VL = V+
235
375
V+ = +5V
V- = -5V
70
CHARGE (pC)
VL = V+
425
255
MAX4677/8/9-07
VL = V+
40
tON, tOFF vs. TEMPERATURE
475
MAX4677/8/9-06
100
90
20
TEMPERATURE (°C)
MAX4677/8/9-08
RON (Ω)
TA = +85°C
1.5
MAX4677/8/9-05
1
AMX4677/8/9-04
2.5
TIME (ns)
MAX4677/MAX4678/MAX4679
2Ω, Quad, SPST, CMOS Analog Switches
VTH (FALLING)
1.0
1
I+, I0.1
0.01
IL
0.001
0.5
tOFF
0.0001
75
2.0
2.5
3.0
3.5
VL (V)
6
0.00001
0
1.5
4.0
4.5
5.0
1.5
2.0
2.5
3.0
3.5
VL (V)
4.0
4.5
5.0
5.5
-40
-20
0
20
40
TEMPERATURE °(C)
_______________________________________________________________________________________
60
80
2Ω, Quad, SPST, CMOS Analog Switches
1
0
V+ = +5V
INSERTION LOSS
V- = -5V
OFF-ISOLATION
VL = V+
1. -3dB, 66MHz
2. -65dB, 1MHz
3. -84dB,1MHz
-20
(dB)
-30
-40
-50
1
0
V+ = +5V
INSERTION LOSS
V- = -5V
VL = V+
OFF-ISOLATION
1. -3dB, 63MHz
2. -65dB, 1MHz
3. -84dB,1MHz
2
-10
-20
-30
(dB)
-10
10
MAX4677/8/9-12
10
-40
-50
2
MAX4677/8/9-13
INSERTION LOSS,
OFF-ISOLATION, AND CROSSTALK
vs. FREQUENCY (SINGLE SUPPLY)
INSERTION LOSS,
OFF-ISOLATION, AND CROSSTALK
vs. FREQUENCY (DUAL SUPPLIES)
-60
-60
-70
3
-80
-70
CROSSTALK
CROSSTALK
3
-80
-90
-90
0.1
1
10
0.1
100
1
10
100
(MHz)
(MHz)
Pin Description
PIN
MAX4677
MAX4678
MAX4679
NAME
FUNCTION
1, 8, 9, 16
1, 8, 9, 16
1, 8, 9, 16
IN1, IN2,
IN3, IN4
2, 7, 10, 15
2, 7, 10, 15
2, 7, 10, 15
COM1, COM2,
COM3, COM4
3, 6, 11, 14
—
—
NC1, NC2,
NC3, NC4
Analog Switch Normally Closed Terminals
—
3, 6, 11, 14
—
NO1, NO2,
NO3, NO4
Analog Switch Normally Open Terminals
—
—
3, 6
NO1, NO4
Analog Switch Normally Open Terminals
—
—
11, 14
NC2, NC3
Analog Switch Normally Closed Terminals
4
4
4
V-
5
5
5
GND
Logic Inputs
Analog Switch Common Terminals
Negative Supply-Voltage Input. Connect to GND
for single-supply operation.
Ground
12
12
12
VL
Logic Supply Input
13
13
13
V+
Positive Supply Input
_______________________________________________________________________________________
7
MAX4677/MAX4678/MAX4679
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
MAX4677/MAX4678/MAX4679
2Ω, Quad, SPST, CMOS Analog Switches
Power-supply bypassing improves noise margin and
prevents switching noise from propagating from the V+
supply to other components. A 0.1µF capacitor connected from V+ to GND is adequate for most applications.
___________Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings
can cause permanent damage to the devices. Always
sequence V+ on first, then V-, then VL followed by the
logic inputs, NO_, NC_, or COM. If proper power-supply
sequencing is not possible, add two small signal diodes
(D1, D2) in series with the supply pins, and a Schottky
diode between V+ and VL for overvoltage protection
(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 leakage characteristics. Device operation is unchanged, and the difference between V+ and
V- should not exceed 11V.
V+
MAX4677
MAX4678
MAX4679
D1
*
*
*
*
VL
COM_
NO_
V2
D2
V*INTERNAL PROTECTION DIODES
Figure 1. Overvoltage Protection Using External Blocking Diodes
MAX4677
MAX4678
MAX4679
SWITCH
INPUT
V+
V+
VL
COM_
V COM
SWITCH
OUTPUT
V+
NO_
OR NC_
VOUT
RL
300Ω
IN_
GND
LOGIC
INPUT
LOGIC
INPUT
50%
0
CL
35pF
t OFF
VOUT
VSWITCH
OUTPUT
V-
0V
t r < 20ns
t f < 20ns
+3V
0
0.9 x V0UT
0.9 x VOUT
t ON
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL
RL + RON
VOUT = VCOM
(
)
Figure 2. Switching Time
V+
V+
VL
V+
LOGIC
INPUT
MAX4679
VCOM1 = +3V
VCOM2 = +3V
LOGIC
INPUT
COM1
VOUT1
NC2
COM2
IN1
IN2
NO1
VOUT2
RL2
GND
CL2
CL1
50%
0
SWITCH
OUTPUT 1
(VOUT1)
0.9 x V0UT1
0
SWITCH
OUTPUT 2
(VOUT2)
VV-
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL1
+3V
RL = 300Ω
CL = 35pF
0.9 x VOUT2
0
tD
Figure 3. Break-Before-Make Interval (MAX4679 Only)
8
_______________________________________________________________________________________
tD
2Ω, Quad, SPST, CMOS Analog Switches
RGEN
V+
V+
VL
V+
∆VOUT
VOUT
NC_OR
NO_
COM_
VOUT
IN
OFF
CL
V GEN
GND
MAX4677/MAX4678/MAX4679
MAX4677
MAX4678
MAX4679
IN
V-
IN
VIN = +3V
OFF
ON
V-
ON
OFF
OFF
Q = (∆V OUT )(C L )
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 4. Charge Injection
NETWORK
ANALYZER
MAX4677
MAX4678
MAX4679
IN1
N_1
PORT 1
COM1
N_1
PORT 1
NETWORK
ANALYZER
50Ω
50Ω
PORT 2
COM_
N_ _
VV-
GND
VL
IN_
MAX4677
MAX4678
MAX4679
IN_
N_ _
PORT 2
COM1
COM_
GND
VL
V+
V+
+5V
-5V
Figure 5a. Off-Isolation Test Circuit, Dual Supplies
+5V
Figure 5b. Off-Isolation Test Circuit, Single Supply
_______________________________________________________________________________________
9
MAX4677/MAX4678/MAX4679
2Ω, Quad, SPST, CMOS Analog Switches
NETWORK
ANALYZER
MAX4677
MAX4678
MAX4679
NETWORK
ANALYZER
PORT 1
COM1
PORT 1
MAX4677
MAX4678
MAX4679
COM1
N_1
IN1
N_1
IN1
V+
50Ω
COM_
COM_
PORT 2
V+
PORT 2
N_ _
N_ _
IN2
V+
IN2
V-
GND
VL
V+
V-
V-
GND
VL
V+
V+
V+
Figure 6a. Crosstalk Test Circuit, Dual Supplies
Figure 6b. Crosstalk Test Circuit, Single Supply
NETWORK ANALYZER
COM1
PORT 1
N_1
V+
PORT 2
COM_
V-5V
MAX4677
MAX4678
MAX4679
GND
VL
V+
+5V
Figure 7a. Insertion Loss Test Circuit, Dual Supplies
10
______________________________________________________________________________________
50Ω
2Ω, Quad, SPST, CMOS Analog Switches
PORT 1
N_1
COM1
IN_
V+
MAX4677
MAX4678
MAX4679
PORT 2
V-
GND
VL
V+
+5V
Figure 7b. Insertion Loss Test Circuit, Single Supply
Chip Information
TRANSISTOR COUNT: 240
PROCESS: CMOS
______________________________________________________________________________________
11
MAX4677/MAX4678/MAX4679
NETWORK ANALYZER
2Ω, Quad, SPST, CMOS Analog Switches
PDIPN.EPS
TSSOP.EPS
MAX4677/MAX4678/MAX4679
Package Information
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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