MAX4539 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers

19-4780; Rev 1; 6/99
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
General Description
The MAX4539/MAX4540 low-voltage, CMOS 8-channel
(MAX4539) and dual 4-channel (MAX4540) multiplexers
are ideal for precision ADC calibration and system self-
monitoring applications. These calibration multiplexers
(cal-muxes) have precision resistor-dividers to generate
accurate voltage ratios from an input reference voltage.
The reference ratios include 15/4096 and 4081/4096 of
the external reference voltage, accurate to 15 bits, and
1/2V+ and 5/8(V+ - V-), accurate to 8 bits. The external
reference voltage as well as ground can also be
switched to the output. The MAX4539/MAX4540 have
enable inputs and address latching. All digital inputs
have 0.8V and 2.4V logic thresholds, ensuring both
TTL- and CMOS-logic compatibility when using a ±5V
or a single +5V supply. Protection diodes at all inputs
provide an ESD rating >2kV.
The MAX4539/MAX4540 operate from a single +2.7V to
+12V supply, or from dual supplies of ±2.7V to ±6V.
On-resistance (100Ω max) is matched between switch-
es to 6Ω max. Each switch can handle Rail-to-Rail^®
analog signals. The off leakage current is 0.1nA at
T_A = +25°C and 2nA at T_A = +85°C.
The MAX4539/MAX4540 are available in small 20-pin
DIP, SO, and SSOP packages.
Battery-Operated Equipment
Data-Acquisition Systems
Test Equipment
Applications
Avionics
Audio-Signal Routing
Networking
PART
MAX4539CAP
MAX4539CWP
MAX4539CPP
MAX4539EAP
MAX4539EWP
MAX4539EPP
MAX4540CAP
MAX4540CWP
MAX4540CPP
MAX4540EAP
MAX4540EWP
MAX4540EPP
Ordering Information
TEMP. RANGE
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
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
PIN-PACKAGE
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Features
o On-Chip Gain and Offset Divider Networks
Provide 15-Bit Accurate Output Ratios
o On-Chip V+ to GND and V+ to V- Divider Networks
Provide 8-Bit Accurate Output Ratios
o R_ON: 100Ω max
o R_ON Matching Between Channels: 6Ω max
o Charge Injection: 5pC max
o Low 0.1nA Off Leakage Current
o Small 20-Pin SSOP/SO/DIP Packages
Pin Configurations/
_______________Functional Diagrams
V+ ¹
3R
5R
GND
V-
REFHI
2
3
4
15R1
MAX4539
R2
20
19
LOGIC
DECODER
18
17
16
15
R2
LATCH
EN
CAL
A0
A1
A2
4081R1
15R1
4081R1
REFLO ⁵
COM ⁶
NO1
NO2
7
8
NO3 ⁹
NO4 ¹⁰
MAX4540 appears at end of data sheet.
14
13
NO8
NO7
12
NO6
11
NO5
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone].
For small orders, phone [phone].