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参数资料
| 型号： | HI7188EVAL |
| 厂商： | Intersil |
| 文件页数： | 7/22页 |
| 文件大小： | 0K |
| 描述： | EVALUATION PLATFORM HI7188 |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 240 |
| 数据接口： | 串行 |
| 输入范围： | ±2.5 V |
| 在以下条件下的电源（标准）： | 28mW @ 240SPS |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | HI7188 |
| 已供物品： | 板 |
Application Note 9518
6. NRAM 00000E 00000F 00000E 00000F 00000EC
00000F : 00000E (hex) will be written to the first, third, and
fifth logical negative gain calibration RAM location. These
coefficients would be used for gain calibration of negative
input voltages for logical channels 1, 3, and 5 which are
physically described by the CCR register contents. 00000F
(hex) will be written to the second, fourth, and sixth logical
negative gain calibration RAM location. These coefficients
would be used for gain calibration of negative input voltag-
es for logical channels 2, 4, and 6, which are physically de-
scribed by the CCR register contents.
If the above configuration file were used to restore the HI7188
the part would convert physical channels 1 and 2 in alternating
sequence after a system offset calibration were performed. It is
up to the user to ensure that the offset calibration voltage is
applied to the HI7188 inputs before restoring this file.
Configuration files are ASCII files that may be generated with a
text editor of your choice or through the Configuration Menu. A
valid configuration file does not require all memory elements be
specified. That is, any number of the lines in the above example
could have been omitted. The software inspects the first field of
each line for a known key word. The key words are CNTL,
CCR2, CCR1, ORAM, PRAM, and NRAM. These key words
must be upper case. Any line that does not have one of these
key words in the first field is considered a comment line. It is
important that the CNTL line occur before the calibration
RAM lines as the software must know the active channel
count before accessing RAMs.
Please note that the calibration coef?cients chosen for this
example are not realistic values and are used only for clari?-
cation in describing the contents of a con?guration ?le.
Read Menu:
The Read Menu allows the user to quickly read the contents
of all accessible registers of the HI7188, without knowledge
of the instruction byte required.
Read Menu:
1 Data RAM (quick read)
2 Data RAM
3 Control Register
4 CCR #2
5 CCR #1
6 Offset RAM
7 Positive Gain RAM
8 Negative Gain RAM
9 Hex Input
Menu Select:
m Main Menu
c Con?guration Menu
w Write Menu
Reset Select:
i I/O Reset
s System Reset
Enter Selection:
1
2
3
4
5
6
7
8
Data RAM (quick read): Entering 1 from the Read Menu
invokes a read communication cycle with the Data RAM.
The data is displayed in binary (MSB to LSB format),
hex, and volts for each active channel being converted.
Touch any key to return execution to the Read Menu.
Data RAM: Entering 2 from the Read menu invokes a
read communication cycle with the Data RAM. The user
will be asked if a continuous read is required. If continu-
ous read is not requested, a single Data RAM read will
occur and the software enters a “single step” read mode.
In this mode, entering [return] will execute another data
RAM read. This action continues until any key other than
[return] is entered at the prompt. Discontinuation of the
single step read mode returns the user to the Read
Menu. If a continuous read is requested, the software
inquires about saving the data to disc. If continuous read
without saving to disc is requested, the user is asked if
they would like data to be averaged and if so, how many
conversion results to average before displaying data (a
running average is maintained). See the Display of Data
RAM in Continuous Mode paragraph in the Software
Clari?cations section of this document for details on what
is displayed whether averaging is requested or not. If the
user requests continuous reads and saving the data to
disc, details regarding ?le name, number of conversion
scans to store and data format are asked for. The reads
are completed and execution returns to the Read Menu.
See the Saving Conversion Results to a File paragraph
in the Software Clari?cations section of this document for
details on the order of the prompts and other capabilities
Control Register: Entering 3 from the Read Menu invokes
a read communication cycle with the Control Register. The
data is displayed in hex, MSB to LSB format. Touch any
key to return execution to the Read Menu.
Channel Con?guration Register #2: Entering 4 from the
Read Menu invokes a read communication cycle with the
Channel Con?guration Register #2. The data is dis-
played in hex, MSB to LSB format. Touch any key to
return execution to the Read Menu.
Channel Con?guration Register #1: Entering 5 from the
Read Menu invokes a read communication cycle with the
Channel Con?guration Register #1. The data is dis-
played in hex, MSB to LSB format. Touch any key to
return execution to the Read Menu.
Offset Calibration RAM: Entering 6 from the Read Menu
invokes a read communication cycle with the Offset Cali-
bration RAM. The data is displayed in hex, MSB to LSB
format, for each active channel being converted. Touch
any key to return execution to the Read Menu.
Positive Gain Calibration RAM: Entering 7 from the Read
Menu invokes a read communication cycle with the Positive
Gain Calibration RAM. The data is displayed in hex, MSB to
LSB format, for each active channel being converted. Touch
any key to return execution to the Read Menu.
Negative Gain Calibration RAM: Entering 8 from the Read
Menu invokes a read communication cycle with the Nega-
tive Gain Calibration RAM. The data is displayed in hex,
7
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| HI7188IN | 功能描述:CONV A/D 16BIT 8:1 MUX 44-MQFP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| HI7188IP | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:IC 16BIT ADC 7188 DIP40 制造商:Harris Corporation 功能描述: |
| HI7190 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:null24-Bit, High Precision, Sigma Delta A/D Converter |
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