- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383320 > MAX1452EAE (MAXIM INTEGRATED PRODUCTS INC) Low-Cost Precision Sensor Signal Conditioner PDF資料下載
參數(shù)資料
| 型號： | MAX1452EAE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Low-Cost Precision Sensor Signal Conditioner |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | ROHS COMPLIANT, SSOP-16 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大小： | 283K |
| 代理商： | MAX1452EAE |
utilizes a switched capacitor CMOS technology, with an
input referred offset trimming range of more than
±150mV with an approximate 3μV resolution (16 bits).
The PGA provides gain values from 39V/V to 240V/V in
16 steps.
The MAX1452 uses four 16-bit DACs with calibration
coefficients stored by the user in an internal 768 x 8
EEPROM (6144 bits). This memory contains the follow-
ing information, as 16-bit wide words:
Configuration Register
Offset Calibration Coefficient Table
Offset Temperature Coefficient Register
FSO (Full-Span Output) Calibration Table
FSO Temperature Error Correction Coefficient
Register
52 bytes (416 bits) uncommitted for customer pro-
gramming of manufacturing data (e.g., serial num-
ber and date)
Offset Correction
Initial offset correction is accomplished at the input
stage of the signal gain amplifiers by a coarse offset
setting. Final offset correction occurs through the use of
a temperature indexed lookup table with 176 16-bit
entries. The on-chip temperature sensor provides a
unique 16-bit offset trim value from the table with an
indexing resolution of approximately 1.5
°
C from -40
°
C
to +125
°
C. Every millisecond, the on-chip temperature
sensor provides indexing into the offset lookup table in
EEPROM and the resulting value transferred to the off-
set DAC register. The resulting voltage is fed into a
summing junction at the PGA output, compensating the
sensor offset with a resolution of ±76μV (±0.0019%
FSO). If the offset TC DAC is set to zero then the maxi-
mum temperature error is equivalent to one degree of
temperature drift of the sensor, given the Offset DAC
has corrected the sensor at every 1.5
°
C. The tempera-
ture indexing boundaries are outside of the specified
Absolute Maximum Ratings
. The minimum indexing
value is 00hex corresponding to approximately -69
°
C.
All temperatures below this value will output the coeffi-
cient value at index 00hex. The maximum indexing
value is AFhex, which is the highest lookup table entry.
All temperatures higher than approximately 184
°
C will
output the highest lookup table index value. No index-
ing wrap-around errors are produced.
FSO Correction
Two functional blocks control the FSO gain calibration.
First, a coarse gain is set by digitally selecting the gain
of the PGA. Second, FSO DAC sets the sensor bridge
current or voltage with the digital input obtained from a
temperature-indexed reference to the FSO lookup table
in EEPROM. FSO correction occurs through the use of
a temperature indexed lookup table with 176 16-bit
entries. The on-chip temperature sensor provides a
unique FSO trim from the table with an indexing resolu-
tion approaching one 16-bit value at every 1.5
°
C from
-40
°
C to +125
°
C. The temperature indexing boundaries
are outside of the specified
Absolute Maximum
Ratings
. The minimum indexing value is 00hex corre-
sponding to approximately -69
°
C. All temperatures
below this value will output the coefficient value at
index 00hex. The maximum indexing value is AFhex,
which is the highest lookup table entry. All tempera-
tures higher than approximately 184
°
C will output the
highest lookup table index value. No indexing wrap-
around errors are produced.
Linear and Nonlinear Temperature
Compensation
Writing 16-bit calibration coefficients into the offset TC
and FSOTC registers compensates first-order tempera-
M
Low-Cost Precision Sensor
Signal Conditioner
_______________________________________________________________________________________
7
MAX1452
BIAS
GENERATOR
OSCILLATOR
1
1
1
1
ANAMUX
FSOTC
176
TEMPERATURE
LOOK UP
POINTS FOR
OFFSET AND
SPAN.
OP-AMP
A = 1
AMPOUT
V
SS
OUT
V
DD
CLK1M
TEST
INTERNAL
EEPROM
6144 BITS
416 BITS
FOR USER
BDR
PGA
VDDF
DIO
V
DD
BDR
UNLOCK
AMP+
AMP-
INP
ISRC
INM
8-BIT ADC
TEMP
SENSOR
IRO
DAC
CURRENT
SOURCE
V
DD
∑
Figure 1. Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1457 | 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation |
| MAX1457ACJ | 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation |
| MAX1457CCJ | 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation |
| MAX1457CWI | 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation |
| MAX1457AWI | 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1452EAE+ | 功能描述:板上安裝溫度傳感器 Precision Sensor Signal Conditioner RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX1452EAE+C8H | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1452EAE+T | 功能描述:板上安裝溫度傳感器 Precision Sensor Signal Conditioner RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX1452EAE-T | 功能描述:板上安裝溫度傳感器 Precision Sensor Signal Conditioner RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX1452EVKIT-CS | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
發(fā)布緊急采購，3分鐘左右您將得到回復。