Datasheet

The power requirements are shown in Table 1. Note that the
external AVDD and AVSS power rails are required for full system
operation. The currently supported platforms and ports are shown
in Table 2.
Table 1. Power Requirements for the Carmel Subsystem
Reference Design
Power
Name
Jumper
Shunt
Input
Voltage
(V)
Input
Current
(mA, max)
3.3V Pmod
Power
Supply
JU4: 1-
2
3.3 49.0
AVDD —
15.0 to
32.5
25.0
AVSS —
-15.0 to
-32.5
25.0
Table 2. Supported Platforms and Ports
Supported Platforms Ports
LX9 platform (Spartan
®
-6)
J5
ZedBoard platform (Zynq
®
-7020)
JA1
The MAX15500 (U1) is a single-channel, low-cost, precision analog current/voltage output conditioner
developed to meet the requirements of PLCs and other industrial control and automation applications.
The MAX15500 operates from a ±15V to ±32.5V power-supply range.
The MAX15500 can generate both unipolar and bipolar current and voltage outputs. In current mode, the
device produces currents of -1.2mA to +24mA or -24mA to +24mA. In voltage mode, the device
produces voltages of -0.3V to +6V, -0.6V to +12V, or ±12V. To allow for overrange and underrange
capability in unipolar mode, the transfer function of the MAX15500 is offset so that when the voltage at
AIN is 5% of full scale, IOUT is 0mA and VOUT is 0V. Once VAIN attains full scale, VOUT or IOUT
becomes full scale +5% or +20% depending on the state of FSMODE.
The MAX15500 protects against overcurrent and short-circuit conditions when OUT goes to ground or a
voltage up to ±32.5V. The device also monitors for overtemperature and supply brownout conditions. The
supply brownout threshold is programmable between ±10V and ±24V in 2V increments. The MAX15500
provides extensive error reporting of short-circuit, open-circuit, brownout, and overtemperature conditions
through the SPI interface and an additional open-drain interrupt output (ERROR). The MAX15500 also
includes an analog 0 to 3V output (MON) to monitor the load condition at OUT.
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