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PDF MAX4678 Data sheet ( Hoja de datos )
| Número de pieza | MAX4678 | |
| Descripción | 2 / Quad / SPST / CMOS Analog Switches | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1713; Rev 0; 4/00
2Ω, Quad, SPST, CMOS Analog Switches
General Description
The MAX4677/MAX4678/MAX4679 quad analog switch-
es feature 1.6Ω max on-resistance (RON) when operat-
ing 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-to-
Rail® analog signals. Off-leakage current is 0.1nA at
+25°C. These switches are ideal in low-distortion appli-
cations 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.
The MAX4677 has four normally closed (NC) switches,
and the MAX4678 has four normally open (NO) switch-
es. The MAX4679 has two NC and two NO switches
and features guaranteed break-before-make switching.
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.
________________________Applications
Reed Relay Replacement Avionics
Test Equipment
ADC Systems
Communications Systems Data-Acquisition Systems
Audio Signal Routing
PBX/PABX Systems
Features
o On-Resistance 1.6Ω max
o On-Resistance Flatness 0.4Ω max
o On-Resistance Matching 0.3Ω max
o Dual ±2.7V to ±5.5V or Single +2.7V to +11V
Supply Range
o TTL/CMOS-Logic Compatible
o Crosstalk -84dB at 1MHz
o Off-Isolation -65dB at 1MHz
o -3dB Bandwidth: 66MHz
o Rail-to-Rail Signal Range
Ordering Information
PART
MAX4677EUE
MAX4677EPE
MAX4678EUE
MAX4678EPE
MAX4679EUE
MAX4679EPE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 TSSOP
16 DIP
16 TSSOP
16 DIP
16 TSSOP
16 DIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
______________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1
COM1 2
NC1 3
V- 4
GND 5
NC4 6
COM4 7
IN4 8
MAX4677
16 IN2
15 COM2
14 NC2
13 V+
12 VL
11 NC3
10 COM3
9 IN3
DIP/TSSOP
MAX4677
LOGIC
SWITCH
0 ON
1 OFF
IN1 1
COM1 2
NO1 3
V- 4
GND 5
NO4 6
COM4 7
IN4 8
MAX4678
16 IN2
15 COM2
14 NO2
13 V+
12 VL
11 NO3
10 COM3
9 IN3
DIP/TSSOP
MAX4678
LOGIC
SWITCH
0 OFF
1 ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
IN1 1
COM1 2
NO1 3
V- 4
GND 5
NO4 6
COM4 7
IN4 8
MAX4679
16 IN2
15 COM2
14 NC2
13 V+
12 VL
11 NC3
10 COM3
9 IN3
LOGIC
0
1
DIP/TSSOP
MAX4679
SWITCHES
1, 4
OFF
ON
SWITCHES
2, 3
ON
OFF
________________________________________________________________ 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.
1 page  
2Ω, Quad, SPST, CMOS Analog Switches
ELECTRICAL CHARACTERISTICS–Single Supply (continued)
(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
Break-Before- Make
Delay
tBBM
MAX4679 only, RL = 300Ω, CL = 35pF, Figure 3
5
ns
Charge Injection
Off-Isolation
Crosstalk
-3dB Bandwidth
Q
VISO
BW
RGEN = 0, CL = 1nF, VGEN = 0, Figure 4
RL = 50Ω, CL = 5pF, f = 1MHz, Figure 5b
RL = 50Ω, CL= 5pF, f = 1MHz, Figure 6b
RS = 50Ω, RL = 50Ω, Figure 7b
9 pC
-65 dB
-84 dB
63 MHz
NC or NO Off-
Capacitance
C(N_OFF) f = 1MHz, Figure 8
85 pF
COM Off-Capacitance
On-Capacitance
C(COMOFF)
C(ON)
f = 1MHz, Figure 8
f = 1MHz, Figure 8
85 pF
350 pF
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.
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
(DUAL SUPPLY)
2.0
1.8 V± = ±2.5V
1.6
1.4
1.2
1.0
0.8 V± = ±3V
0.6
V± = ±4V
V± = ±5V
0.4
0.2
0
-5 -3 -1
1
VCOM (V)
3
5
Typical Operating Characteristics
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
5.0
V- = 0
4.5
V+ = 2.5V
4.0
3.5 V+ = 3V
3.0
2.5
V+ = 4V
V+ = 5V
2.0
1.5
1.0
0.5
0
0
V+ = 12V
V+ = 9V
1234
VCOM (V)
5
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
1.4
1.2
TA = +85°C
1.0
TA = +25°C
0.8
TA = -40°C
0.6
0.4
V+ = +5V
0.2 V- = -5V
VL = V+
0
-5 -4 -3 -2 -1 0 1 2 3 4 5
VCOM (V)
_______________________________________________________________________________________ 5
5 Page 
2Ω, Quad, SPST, CMOS Analog Switches
NETWORK ANALYZER
PORT 1
PORT 2
COM1
N_1
IN_
MAX4677
MAX4678
MAX4679
V+
V- GND VL V+
+5V
Figure 7b. Insertion Loss Test Circuit, Single Supply
Chip Information
TRANSISTOR COUNT: 240
PROCESS: CMOS
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX4678.PDF ] | |
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