MAX4520 Datasheet PDF - Maxim Integrated
| Part Number | MAX4520 | |
| Description | SPST Analog Switches | |
| Manufacturers | Maxim Integrated | |
| Logo |  |
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19-1542; Rev 0; 10/99
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
General Description
The MAX4510/MAX4520 single-pole/single-throw (SPST),
fault-protected analog switches feature a fault-protected
input and Rail-to-Rail® signal-handling capability. The
normally open (NO) and normally closed (NC) terminals
are protected from overvoltage faults up to 36V during
power-on and 44V with power off. During a fault condi-
tion, the switch input terminal (NO or NC) becomes an
open circuit; only nanoamperes of leakage current flow
from the fault source, and the switch output (COM) fur-
nishes up to 13mA of the appropriate polarity supply
voltage to the load. This ensures unambiguous rail-to-rail
outputs when a fault begins and ends.
On-resistance is 160Ω max. The off-leakage current is
only 0.5nA at +25°C and 10nA at +85°C. The MAX4510
is a normally closed switch, while the MAX4520 is a
normally open switch. These CMOS switches operate
with dual power supplies ranging from ±4.5V to ±20V
or a single supply between +9V and +36V.
The digital input has +0.8V and +2.4V logic thresholds,
ensuring both TTL- and CMOS-logic compatibility when
using ±15V or a single +12V supply. The MAX4510/
MAX4520 are available in 6-pin SOT23 and 8-pin µMAX
packages.
Features
o ±40V Fault Protection with Power Off
±36V Fault Protection with ±15V Supplies
o Switch is Off with Power Removed
o Rail-to-Rail Signal Handling
o 160Ω max Signal Paths with ±15V Supplies
o On-Switch Turns Off with Overvoltage
o 0.5nA Off-Leakage Current
o Output Clamped to Appropriate Supply Voltage
During Fault Condition; No Transition Glitch
o No Power-Supply Sequencing Required
o ±4.5V to ±20V Dual Supplies
+9V to +36V Single Supply
o Low Power Consumption: <2mW
o TTL- and CMOS-Compatible Logic Inputs with
Single +9V to +15V or ±15V Supplies
Applications
Data Acquisition
Industrial and Process-Control Systems
Avionics
ATE Equipment
Redundant/Backup Systems
Pin Configurations/Truth Tables
TOP VIEW
V+ 1
V- 2
MAX4510
MAX4520
6 NC (NO)
5 COM
Ordering Information
PART
TEMP. RANGE
MAX4510EUT-T -40°C to +85°C
MAX4510EUA -40°C to +85°C
MAX4520EUT-T -40°C to +85°C
MAX4520EUA -40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
8 µMAX
6 SOT23-6
8 µMAX
TOP
MARK
AABZ
—
AADK
—
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
IN 3
( ) ARE FOR MAX4520.
SOT23
4 GND
IN MAX4510 MAX4520
0 ON
OFF
1 OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT.
ALL SWITCHES ARE OFF WITH POWER REMOVED.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
|
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Rail-to-Rail, Fault-Protected,
SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
(V+ = +12V, V- = 0, GND = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 3)
PARAMETER
SYMBOL
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
Turn-Off Time
tOFF
CONDITIONS
VNO or VNC = 7V, RL = 2kΩ,
CL = 35pF, Figure 2
VNO or VNC = 7V, RL = 2kΩ,
CL = 35pF, Figure 2
TA
+25°C
E
+25°C
E
MIN TYP MAX UNITS
500 750
1000
60 200
300
ns
ns
Charge Injection (Note 7)
Q
CL = 1nF, VNO = 0,
RS = 0Ω, Figure 3
+25°C
15
pC
NO or NC Off-Capacitance
COM Off-Capacitance
COM On-Capacitance
CNO(OFF),
CNC(OFF)
CCOM(OFF)
CCOM(ON)
f = 1MHz, Figure 4
VCOM = 0, f = 1MHz, Figure 4
VCOM = VNO = 0,
f = 1MHz, Figure 4
+25°C
+25°C
+25°C
9 pF
9 pF
22 pF
Off-Isolation (Note 8)
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V- and GND Supply Current
VISO
V+
I+
IGND
RL = 50Ω, CL = 15pF,
VIN = 1VRMS, f = 1MHz, Figure 5
+25°C
VIN = 0 or 5V
VIN = 0 or 12V
VIN = 0 or 5V
E
+25°C
E
+25°C
E
+25°C
E
9
-62 dB
36
50 125
175
25 75
125
50 125
175
V
µA
µA
µA
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at TA = +25°C.
SOT packages are 100% tested at +25°C. Limits at the maximum-rated temperature are guaranteed by design and corre-
lation limits at +25°C. Leakage tests for the SOT package are typical only.
NC and NO pins are fault protected. Signals on NC or NO exceeding -36V to +36V may damage the device. These limits
apply with power applied to V+ or V-, or ±40V with V+ = V- = 0.
Guaranteed by design.
Off isolation = 20log10 [ VCOM / (VNC or VNO) ], VCOM = output, VNC or VNO = input to off switch.
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
_______________________________________________________________________________________ 5
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| Information | Total 12 Pages | |
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