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參數(shù)資料
| 型號： | MAX1348BETX+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 24/39頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC/DAC 12BIT W/FIFO 36WQFN |
| 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）： | 12 b |
| 采樣率（每秒）： | 225k |
| 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： | 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) |
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MAX1340/MAX1342/MAX1346/MAX1348
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
30
______________________________________________________________________________________
Do not issue a second
CNVST signal before EOC goes
low; otherwise, the FIFO can be corrupted. Wait until all
conversions are complete before reading the FIFO. SPI
communications to the DAC and GPIO registers are per-
mitted during conversion. However, coupled noise may
result in degraded ADC signal-to-noise ratio (SNR).
Externally Timed Acquisitions and
Internally Timed Conversions with
CNVST
ADC Conversions in Clock Mode 01
In clock mode 01, conversions are requested one at a
time using
CNVST and performed automatically using
the internal oscillator. See Figure 7 for clock mode 01
timing after a command byte is issued.
Setting
CNVST low begins an acquisition, wakes up the
ADC, and places it in track mode. Hold
CNVST low for
at least 1.4s to complete the acquisition. If reference
mode 00 or 10 is selected, an additional 45s is
required for the internal reference to power up. If a tem-
perature measurement is being requested, reference
power-up and temperature measurement is internally
timed. In this case, hold
CNVST low for at least 40ns.
Set
CNVST high to begin a conversion. Sampling is
completed approximately 500ns after
CNVST goes high.
After the conversion is complete, the ADC shuts down
and pulls
EOC low. EOC stays low until CS or CNVST is
pulled low again. Wait until
EOC goes low before pulling
CS or CNVST low. The number of CNVST signals must
equal the number of conversions requested by the scan
(UP TO 514 INTERNALLY CLOCKED ACQUISITIONS AND CONVERSIONS)
CS
DOUT
MSB1
tRDS
LSB1
MSB2
SCLK
CNVST
EOC
Figure 6. Clock Mode 00—After writing a command byte, set
CNVST low for at least 40ns to begin a conversion.
(CONVERSION 2)
tCSW
tDOV
(ACQUISITION 2)
(ACQUISITION 1)
(CONVERSION 1)
CS
DOUT
MSB1
LSB1
MSB2
SCLK
CNVST
EOC
Figure 7. Clock Mode 01—After writing a command byte, request multiple conversions by setting
CNVST low for each conversion.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| MAX134C/D | 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX134CMH | 制造商:Maxim Integrated Products 功能描述:44 PINS MQFP PKG - Bulk |
| MAX134CMH+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX134CMH+D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 9V 3 3/4 Digit 6V DMM Circuit 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX134CMH+T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
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