MAX1459 Datasheet, PDF (21/24 Pages) Maxim Integrated Products – 2-Wire, 4-20mA Smart Signal Conditioner

2-Wire, 4–20mA
Smart Signal Conditioner
DIGITAL
MULTIPLEXER
CS[1:N]
CS1
MODULE 1
CS
BDRIVE
INP
INM
CS2
MODULE 2
CS
BDRIVE
INP
INM
CSN
MODULE N
CS
BDRIVE
INP
INM
SCLK
SCLK
SCLK
+5V
V_DD
DIO _OUT
V_SS
V_DD
DIO _OUT
V_SS
V_DD
DIO _OUT
V_SS
VOUT
DVM
SCLK
DIO
TEST
OVEN
Figure 15. Automated Test System Concept
2) MAX1459 Reference Manual, which describes in
detail the architecture and functionality of the
MAX1459. This manual was developed for test engi-
neers familiar with data acquisition of sensor data
and provides sensor compensation algorithms and
test procedures.
3) MAX1459 Communication Software, which enables
programming of the MAX1459 from a computer (IBM
compatible), one module at a time.
4) Interface Adapter and Cable, which allow the con-
nection of the evaluation board to a PC parallel port.
MAX1459
Pilot Production System
Maxim understands that one of the biggest challenges
in pressure sensor design is the transition from proto-
type to production. To simplify this transition, Maxim
has developed the fully automated pilot production
system for volume applications.
The system consists of the Maxim 14XXDASBOARD
plus one or more 14XXMUXBOARD modules, a DVM,
an environmental chamber, and a pressure controller.
Only the 14XXDASBOARD and the 14XXMUXBOARD
modules are available through Maxim. The DVM, envi-
ronmental chamber, and pressure controller must be
acquired through other vendors.
The 14XXDASBOARD, in conjunction with the
14XXMUXBOARD modules, allow compensation of up to
112 units. IEEE-488 commands select the active DUT
and communicate with the MAX14XX application cir-
cuits. All system voltage measurements are multiplexed
for use with a single external DVM. Each DUT interfaces
to the 14XXMUXBOARD by means of a general-purpose
transition board, which provides digital interface signals
and low-noise analog inputs. The 14XXDASBOARD is
required to operate the 14XXMUXBOARD. All driver soft-
ware is incorporated into the 14XXDASBOARD firmware.
Sensor compensation procedure is implemented using
National Instruments’ LabView™ program.
LabView is a trademark of National Instruments.
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