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參數(shù)資料
| 型號(hào)： | MAX1358BETL+W |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 26/71頁 |
| 文件大?。?/td> | 0K |
| 描述： | DAS 16BIT DUAL 10:1 40-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS） |
| 分辨率（位）： | 16 b |
| 采樣率（每秒）： | 21.94k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 電壓電源： | 模擬和數(shù)字 |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 40-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 40-TQFN-EP（6x6） |
| 包裝： | 托盤 |
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MAX1358B
16-Bit, Data-Acquisition System with ADC, DACs,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
32
______________________________________________________________________________________
Program each UPIO1–UPIO4 as one of the following:
General-purpose input
Power-mode control
Analog switch (SPST) and SPDT control input
ADC data-ready output
General-purpose output
PWM output
Alarm output
SPI pass-through
Internal and External (Remote)
Temperature Sensors
An internal transistor or a remote transistor (or diode) is
used with the ADC and a programmable current source
to measure the ambient temperature. Depending on the
method, either two or four currents are passed through
the PN junction. The voltage across the PN junction is
measured at each current. For each current, the voltage
across a series resistor is also measured. Measuring the
voltage across the resistor allows the user to determine
the precise current ratios. A microcontroller can then
use the diode equation to calculate the temperature.
The four-current method eliminates errors caused by
parasitic resistance in series with the diode, which
increases the apparent voltage across the PN junction.
When measuring temperature using the internal transis-
tor for a sensor, the two-current method is usually ade-
quate although the four-current method can also be
used. Refer to Application Note 4296:
Measuring
Temperature with the MAX1358 Data Acquisition System
for details on the measurement procedure.
M32K
TUNE<8:0>
HFCE
FLLE
CRDY
HFCLK
1, 2, 4, 8
DIVIDER
2:1
MUX
CLK
CLKE
CKSEL<1:0>
CKSEL2
1
0
4.9152MHz HF OSCILLATOR AND FLL
4.9152MHz
32.768kHz
FREQUENCY
COMPARE
FREQ
ERROR
DIGITALLY
CONTROLLED
OSCILLATOR
FREQUENCY
INTEGRATOR
Figure 12. High-Frequency Clock and FLL Block Diagram
Figure 13. Temperature-Sensor Measurement Block Diagram
CURRENT
SOURCE
1:3
DEMUX
IVAL<1:0>
IMUX<1:0>
AIN1
AIN2
AIN1
AIN2
TEMP+
TEMP-
PROGRAMMABLE CURRENT SOURCE
TEMP SENSOR
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