參數(shù)資料
型號(hào)： MAX1452AAE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號(hào)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(yè)數(shù)： 13/24頁(yè)
文件大小： 283K
代理商： MAX1452AAE
1) Write the 16 data bits to DHR[15:0] using four byte
accesses into the interface register set.
2) Write the address of the target internal calibration
register to ICRA[3:0].
3) Write the load internal calibration register (LdICR)
command to CRIL[3:0].
When a LdICR command is issued to the CRIL register,
the calibration register loaded depends on the address
in the internal calibration register address (ICRA).
Table
11
specifies which calibration register is decoded.
Erasing and Writing the EEPROM
The internal EEPROM needs to be erased (bytes set to
FFhex) prior to programming the desired contents.
Remember to save the 3 MSBs of byte 161hex (high-
byte of the configuration register) and restore it when
programming its contents to prevent modification of the
trimmed oscillator frequency.
The internal EEPROM can be entirely erased with the
ERASE command, or partially erased with the
PageErase command (see
Table 10
, CRIL command).
It is necessary to wait 6ms after issuing the ERASE or
PageErase command.
After the EEPROM bytes have been erased (value of
every byte = FFhex), the user can program its contents,
following the procedure below:
1) Write the 8 data bits to DHR[7:0] using two byte
accesses into the interface register set.
2) Write the address of the target internal EEPROM
location to IEEA[9:0] using three byte accesses into
the interface register set.
3) Write the EEPROM write command (EEPW) to
CRIL[3:0].
Serial Digital Output
When a RdIRS command is written to CRIL[3:0], DIO is
configured as a digital output and the contents of the
register designated by IRSP[3:0] are sent out as a byte
framed by a start bit and a stop bit.
Once the tester finishes sending the RdIRS command,
it must three-state its connection to DIO to allow the
MAX1452 to drive the DIO line. The MAX1452 will three-
state DIO high for 1 byte time and then drive with the
start bit in the next bit period followed by the data byte
and stop bit. The sequence is shown in Figure 5.
The data returned on a RdIRS command depends on
the address in IRSP.
Table 12
defines what is returned
for the various addresses.
Multiplexed Analog Output
When a RdAlg command is written to CRIL[3:0] the
analog signal designated by ALOC[3:0] is asserted on
the OUT pin. The duration of the analog signal is deter-
mined by ATIM[3:0] after which the pin reverts to three-
state. While the analog signal is asserted in the OUT
pin, DIO is simultaneously three-stated, enabling a par-
allel wiring of DIO and OUT. When DIO and OUT are
connected in parallel, the host computer or calibration
system must three-state its connection to DIO after
asserting the stop bit.
Do not load the OUT line when
reading internal signals, such as BDR, FSOTC...etc.
The analog output sequence with DIO and OUT is
shown in Figure 6.
The duration of the analog signal is controlled by
ATIM[3:0] as given in
Table 13.
The analog signal driven onto the OUT pin is deter-
mined by the value in the ALOC register. The signals
are specified in
Table 14.
Test System Configuration
The MAX1452 is designed to support an automated
production test system with integrated calibration and
temperature compensation.
Figure 7
shows the imple-
mentation concept for a low-cost test system capable
of testing many transducer modules connected in par-
M
Low-Cost Precision Sensor
Signal Conditioner
______________________________________________________________________________________
13
DRIVEN BY TESTER
DRIVEN BY MAX1452
THREE-STATE
NEED WEAK
PULLUP
THREE-STATE
NEED WEAK
PULLUP
S
L
S
L
M
S
M
S
1 1 1 1 1 0 1 0 0 1 1 0 1 0 1
1 1 1 1 1 1 1 1
1 0 0 0 0 0 1 0 0 0 1
1 1 1 1 1 1 1 1
1 1
DIO
Figure 5. DIO Output Data Format
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1452AAE+ 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(zhǔn)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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX1452AAE+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(zhǔn)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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX1452AAE-T 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) LO-COST PREC SNSR SIGNAL CDTNR RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX1452ATG 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX1452ATG+ 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) LO-COST PREC SNSR SIGNAL CDTNR RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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