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| 型號： | MAX1254BEUE+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 17/29頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT W/REF 16-TSSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 96 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 94k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 15mW |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 16-TSSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 8 個單端，單極；8 個單端，雙極；4 個差分，單極；4 個差分，雙極 |
| 產(chǎn)品目錄頁面： | 1396 (CN2011-ZH PDF) |
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MAX1253/MAX1254
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
24
______________________________________________________________________________________
The temperature measurement process is fully auto-
mated in the MAX1253/MAX1254. All steps are
sequenced and executed by the MAX1253/MAX1254
each time an input channel (or an input channel pair)
configured for temperature measurement is scanned.
The resulting 12-bit, two’s complement number repre-
sents the sensor temperature in degrees Celsius, with
1 LSB = +0.125
°C.
The MAX1253/MAX1254 support both single-ended
and differential temperature measurements.
Applications Information
Setting Up the
MAX1253/MAX1254 Subsystem
The MAX1253/MAX1254 are autonomous subsystems,
requiring only initialization to scan, convert, and monitor
the voltage signals or the temperature sensors con-
nected to their input channels.
For simple applications, using any number of the input
channels and any combination of voltage/temperature
and unipolar/differential, with no interrupt generation
required, use the following intitialization procedure:
Issue a Write Global Configuration Registers com-
mand. This is a single, 5-byte write operation that con-
figures the input channels, enables the channels to be
used, sets the sample wait time between scans, con-
figures the interrupt output INT, selects the reference
mode, and starts the automatic scan mode. See the
Write Global Configuration Registers Command sec-
tion, Table 2, and Tables 5–10.
Immediately after the global configuration register is
loaded, the MAX1253/MAX1254 begin to update the
current data registers. Acquire conversion data from
the MAX1253/MAX1254 by issuing a command to read
a specific channel with the Read Current Data Register
for Selected Channel command. Read all current data
registers at once with the Read Current Data Registers
for All Channels command.
For more complex applications, the monitoring and
interrupt generation features of the MAX1253/MAX1254
require a second step of initialization. Each enabled
channel to be monitored requires configuration using a
Write Configuration Register for Selected Channel com-
mand. Each command is a 5-byte write that sets the
upper and lower fault thresholds, the number of faults for
an alarm before an interrupt is generated, and an aver-
age algorithm parameter if the application requires input
signal filtering.
Applications can read the current data registers and
respond to interrupts signaled by the INT output (see
the Servicing Interrupts at INT section).
All the MAX1253/MAX1254 registers can be verified by
reading back written data, including the configuration
registers. This feature is useful for development and
testing (see Table 2).
Power-Up/Reset Defaults Summary
Setup Register Power-Up/Reset Defaults
At initial power-up or after a RESET command, the
setup register resets to 00 hex. Consequently, the
MAX1253/MAX1254 are configured as follows:
Sample wait time is 0s.
INT output is open drain and outputs an active-low
signal to signify an alarm.
Manual conversion mode.
External reference for voltage measurements.
Table 15. Power-Up/Reset Defaults Summary
REGISTER
BIT RANGE
POWER-UP/RESET STATE
COMMENTS
Setup
B0 to B7
All 0s
See Setup Register Power-Up/Reset Defaults
Channel enable
B0 to B11
All 1s
All channels (int/ext) enabled
Input configuration
B0 to B11
All 0s
All single-ended voltage inputs
Alarm register
B0 to B23
All 0s
No alarms set
Channel configuration
B0 to B7
All 0s
Faults = 0, no averaging
Upper threshold
B0 to B9
All 1s
All upper thresholds max range
Lower threshold
B0 to B9
All 0s
All lower thresholds min range
Current data registers
B0 to B9
200hex
Set at midrange
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1254BEUE+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 10Ch 94ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1254BEUE+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 10Ch 94ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1254BEUE-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1254EVC16 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Stand-Alone 10-Channel 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1254EVKIT | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Evaluation Kit/Evaluation System for the MAX1254 MAX1253 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 |
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