MAX15501EVKIT+ Maxim Integrated Products, MAX15501EVKIT+ Datasheet - Page 25

• Manufacturer Part Number: MAX15501EVKIT+
• Description: KIT EVAL FOR MAX15501
• Manufacturer: Maxim Integrated Products

Specifications of MAX15501EVKIT+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Since the MAX15500/MAX15501 do not use a continuous
clock signal, the SPI read cycles are used to cycle the
error detection and reporting logic. Continue to poll the
device until the error readback reports an all clear status
when resolving single or multiple errors. See below for
examples of typical error handling situations and the
effects of the SPI read operations.
1) Error resolved by the system.
2) Error resolved before the host processor reads error
register.
a) The MAX15500/MAX15501 detect an error condi-
b) The host controller reads the error register for the
c) The host processor resolves the error successfully.
d) The host processor reads the error register for the
e) The host reads the error register for a third time.
a) The MAX15500/MAX15501 detect an error condi-
b) The host controller reads the error register for the
c) The host processor reads the error register for the
tion and ERROR asserts.
first time. This has the effect of resetting ERROR.
The data indicates to the host processor which
error is active.
second time. The data still shows that the error is
present as the error persisted for some time after
step b and before step c. If the error is either an
open load or short circuit, the intermittent bit is set.
An overtemperature or a brownout does not set the
intermittent bit. Reading the register a second time
resets the register.
The data now shows the error is resolved and
future occurrences of this error will trigger ERROR
assertion.
tion and ERROR asserts, but the error resolves
itself.
first time resetting ERROR. The data indicates to
the host processor which error is active. The data
also indicates to the host that the error has been
resolved since the intermittent bit is set.
second time. The data still shows that the error is
active. If the error is for an output fault, the data
also indicates to the host that the error has been
resolved since the intermittent bit is set. Reading
the register a second time resets the register.
______________________________________________________________________________________
Voltage-Output Conditioners
Industrial Analog Current/
3) An error that cannot be resolved.
In current mode, there is approximately 1.0V across the
current-sensing resistors at full scale. The current sens-
ing resistor sets the gain and is calculated as follows:
where V
sense resistor.
See Table 8 for values of V
The output gain in voltage mode is fixed as shown in
Table 9.
Use Table 10 to select the compensation capacitor.
In the current-mode application, use Kelvin and a short
connection from SENSERN and SENSERP to the R
terminals to minimize gain-error drift. Balance and mini-
mize all analog input traces for optimum performance.
a) The MAX15500/MAX15501 detect an error condi-
b) The host controller reads the error register for the
c) The host processor takes action to resolve the
d) The host processor reads the error register for the
e) The host processor reads the error for the third
Setting the Output Gain in Current Mode
tion and ERROR asserts.
first time and resets ERROR. The data indicates to
the host processor which error is active.
error unsuccessfully.
second time. The data still shows that the error is
present.
time. The data show the error to be unresolved.
ERROR does not respond to the same error until
the error is resolved and reported. ERROR asserts
if different errors occur.
SENSE_FS
R
Applications Information
SENSE
Selection of the Compensation
Output Gain in Voltage Mode
Layout Considerations
is the full-scale voltage across the
= V
SENSE_FS
SENSE_FS
Capacitor (C
/I
.
MAX
COMP
SENSE
25
)