參數(shù)資料
型號(hào)： MAX1048BETX+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 25/39頁(yè)
文件大?。?/td> 0K
描述： IC ADC/DAC 10BIT 36-TQFN-EP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類型： ADC，DAC
分辨率（位）： 10 b
采樣率（每秒）： 225k
數(shù)據(jù)接口： 串行
電壓電源： 模擬和數(shù)字
電源電壓： 4.75 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 36-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 36-TQFN 裸露焊盤（6x6）
包裝： 帶卷 (TR)
MAX1040/MAX1042/MAX1046/MAX1048
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
______________________________________________________________________________________
31
(UP TO 514 INTERNALLY CLOCKED ACQUISITIONS AND CONVERSIONS)
MSB1
tDOV
LSB1
MSB2
(CONVERSION BYTE)
CS
DOUT
SCLK
DIN
EOC
Figure 8. Clock Mode 10—The command byte to the conversion register begins the acquisition (
CNVST is not required).
version. However, coupled noise may result in degrad-
ed ADC SNR.
If averaging is turned on, multiple
CNVST pulses need to
be performed before a result is written to the FIFO. Once
the proper number of conversions has been performed
to generate an averaged FIFO result (as specified to the
averaging register), the scan logic automatically switch-
es the analog input multiplexer to the next requested
channel. If a temperature measurement is programmed,
it is performed after the first rising edge of
CNVST follow-
ing the command byte written to the conversion register.
The temperature-conversion result is available on DOUT
once
EOC has been pulled low. Temperature results are
available in 12-bit format.
Internally Timed Acquisitions and
Conversions Using the Serial Interface
ADC Conversions in Clock Mode 10
In clock mode 10, the wake-up, acquisition, conversion,
and shutdown sequence is initiated by writing a com-
mand byte to the conversion register, and is performed
automatically using the internal oscillator. This is the
default clock mode upon power-up. See Figure 8 for
clock mode 10 timing.
Initiate a scan by writing a command byte to the conver-
sion register. The MAX1040/MAX1042/MAX1046/
MAX1048 then power up, scan all requested channels,
store the results in the FIFO, and shut down. After the
scan is complete,
EOC is pulled low and the results are
available in the FIFO. If a temperature measurement is
requested, the temperature result precedes all other
FIFO results. Temperature results are available in 12-bit
format.
EOC stays low until CS is pulled low again. Wait
until all conversions are complete before reading the
FIFO. SPI communications to the DAC and GPIO regis-
ters are permitted during conversion. However, coupled
noise may result in degraded ADC SNR.
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