HI7190EVAL Intersil, HI7190EVAL Datasheet - Page 5

• Manufacturer Part Number: HI7190EVAL
• Description: EVALUATION PLATFORM HI7190
• Manufacturer: Intersil

Specifications of HI7190EVAL

• Number Of Adc's: 1
• Number Of Bits: 24
• Sampling Rate (per Second): 200k
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±2.5 V
• Power (typ) @ Conditions: 15mW @ 200kSPS
• Voltage Supply Source: Analog and Digital, Dual ±
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: HI7190
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

m Entering m from the Write Menu invokes the Main Menu.
r
x
Read Menu:
1 Data Output Register, ‘Read Once’
2 Data Output Register, ‘Read Continuous’
3 Command Register
4 Offset Calibration Register
5 Positive Full Scale Register
6 Negative Full Scale Register
m Main Menu
w Write Menu
x
1 Entering 1 from the Read Menu invokes a read commu-
2 Entering 2 from the Read Menu invokes continuous read
3 Entering 3 from the Read Menu invokes a read commu-
4 Entering 4 from the Read Menu invokes a read commu-
5 Entering 5 from the Read Menu invokes a read commu-
significant to least significant format. The Negative Full
Scale Calibration Register is 3 bytes. All three bytes
must be entered at the prompt.
Entering r from the Write Menu invokes the Read Menu.
Entering x from the Write Menu exits the program.
Exit Program
nication cycle with the Data Output Register. The Data
Output Register will be read one time, the data will be
displayed, and the program will return to the Main Menu.
communication cycles with the Data Output Register.
Refer to the Software Clarifications section of this docu-
ment for details on the displayed data. Continuous data
reads will be displayed until any key is pressed. When a
key is pressed, the program returns to the Main Menu.
nication cycle with the Control Register. The user will be
asked if a continuous read is required. If continuous read
is not requested, executing this command will invoke a
single read of the Control Register, display the data and
return execution to the Main Menu. If continuous read is
requested, the read executions will continue until any
key is touched to abort reads. It is generally not expected
that this register will be read in continuous mode.
nication cycle with the Offset Calibration Register. The
user will be asked if a continuous read is required. If con-
tinuous read is not requested, executing this command
will invoke a single read of the Offset Calibration Regis-
ter, display the data and return execution to the Main
Menu. If continuous read is requested, the read execu-
tions will continue until any key is touched to abort reads.
It is generally not expected that this register will be read
in continuous mode.
nication cycle with the Positive Full Scale Calibration
Register. The user will be asked if a continuous read is
required. If continuous read is not requested, executing
this command will invoke a single read of the Positive
Full Scale Calibration Register, display the data and
return execution to the Main Menu. If continuous read is
requested, the read executions will continue until any
Application Note 9505
5
6 Entering 6 from the Read Menu invokes a read commu-
Examples:
1. Write 8 (hex) to the Offset Calibration Register and
2. Configure the device for bipolar mode, offset binary
Software Execution
The PORT_ID.DAT file contains the port identification for the
parallel printer port interfacing the HI7190 Evaluation board
to the PC. This file needs to be edited (as discussed in the
HI7190RDME.TXT file) before running the software. The
DOS MSD command can be used to find the printer port
identification.
Loading Software: Copy the four files (7190BTA5.CPP,
7190BTA5.EXE, PORT_ID.DAT, and 7190RDME.TXT) from
the diskette onto your PC hard drive into the directory of your
choice. The file 7190BTA5.CPP is the evaluation software
source code. The file 7190BTA5.EXE is the executable pro-
gram and 7190RDME.TXT is a README file containing
valuable information. Please read the 7190RDME.TXT file
before continuing.
key is touched to abort reads. It is generally not expected
that this register will be read in continuous mode.
nication cycle with the Negative Full Scale Calibration
Register. The user will be asked if a continuous read is
required. If continuous read is not requested, executing
this command will invoke a single read of the Negative
Full Scale Calibration Register, display the data and
return execution to the Main Menu. If continuous read is
requested, the read executions will continue until any
key is touched to abort reads. It is generally not expected
that this register will be read in continuous mode.
then read it back. To accomplish this task, choose the
Write Menu option from the Main Menu, choose the Off-
set Register option from the Write Menu. Enter 000008
at the prompt. The program returns to the Main Menu.
Now select the Read Menu option from the Main Menu,
choose the Offset Register option from the Read Menu.
The user will be prompted to decide upon a single read
or continuous read. Enter n for a single read. The data
read will be displayed on the screen and the program will
return to the Main Menu.
coding, 10Hz filter notch frequency, gain of 1, and
conversion mode operation. Select the Change Mode
Menu option from the Main Menu and then the Custom
Menu option from the Change Mode Menu. When
prompted for data coding enter 0 for offset binary. The
next prompt is to enter the notch frequency, enter 10 for
10Hz. Next, the operational mode table is displayed,
choose 0 for conversion mode. The next prompt is for
bipolar/unipolar operation, enter 1 for bipolar mode. The
next screen displays the gain selection table, enter 1 for
gain equal 1. The program determines the data required
to configure the HI7190 as the user specified and
invokes the proper communication cycle. Execution
returns to the Main Menu.