參數(shù)資料
型號(hào)： MAX149BMJP
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： ADC
英文描述： +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
中文描述： 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20
封裝： CERDIP-20
文件頁(yè)數(shù)： 21/24頁(yè)
文件大?。?/td> 221K
代理商： MAX149BMJP
High-S peed Digital Interfac ing with QS PI
The MAX148/MAX149 can interface with QSPI using
the circuit in Figure 20 (f
SCLK
= 2.0MHz, CPOL = 0,
CPHA = 0). This QSPI circuit can be programmed to do a
conversion on each of the eight channels. The result is
stored in memory without taxing the CPU, since QSPI
incorporates its own microsequencer.
The MAX148/MAX149 are QSPI compatible up to the
maximum external clock frequency of 2MHz.
T MS 320LC3x Interfac e
Figure 21 shows an application circuit to interface the
MAX148/MAX149 to the TMS320 in external clock mode.
The timing diagram for this interface circuit is shown in
Figure 22.
Use the following steps to initiate a conversion in the
MAX148/MAX149 and to read the results:
1)
The TMS320 should be configured with CLKX
(transmit clock) as an active-high output clock and
CLKR (TMS320 receive clock) as an active-high
input clock. CLKX and CLKR on the TMS320 are
tied together with the MAX148/MAX149’s SCLK
input.
2)
The MAX148/MAX149’s
CS
pin is driven low by the
TMS320’s XF_ I/O port to enable data to be clocked
into the MAX148/MAX149’s DIN.
An 8-bit word (1XXXXX11) should be written to the
MAX148/MAX149 to initiate a conversion and place
the device into external clock mode. Refer to Table
1 to select the proper XXXXX bit values for your
specific application.
The MAX148/MAX149’s SSTRB output is monitored
via the TMS320’s FSR input. A falling edge on the
SSTRB output indicates that the conversion is in
progress and data is ready to be received from the
MAX148/MAX149.
The TMS320 reads in one data bit on each of the
next 16 rising edges of SCLK. These data bits rep-
resent the 10 + 2-bit conversion result followed by
4 trailing bits, which should be ignored.
Pull
CS
high to disable the MAX148/MAX149 until
the next conversion is initiated.
3)
4)
5)
6)
M
+2.7V to +5.25V, Low-Power, 8-Channel,
S erial 10-Bit ADCs
______________________________________________________________________________________
21
CS
SCLK
DIN
SSTRB
DOUT
START
SEL2
SEL1
SEL0
UNI/BIP SGL/DIF
PD1
PD0
MSB
B8
S1
S0
HIGH
IMPEDANCE
HIGH
IMPEDANCE
Figure 22. TMS320 Serial-Interface Timing Diagram
相關(guān)PDF資料
PDF描述
MAX149AMJP +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX148BMJP +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX148AMJP +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX148AEAP +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX148BEAP +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX14G 制造商:Aavid Thermalloy 功能描述:
MAX14NG 功能描述:散熱片 Max Clip TO220 4.5lb 14.5x13mm RoHS:否 制造商:Ampro By ADLINK 產(chǎn)品:Heat Sink Accessories 安裝風(fēng)格:Through Hole 散熱片材料: 散熱片樣式: 熱阻: 長(zhǎng)度: 寬度: 高度: 設(shè)計(jì)目的:Express-HRR
MAX-14-SEPA 制造商:Misc 功能描述:
MAX15 功能描述:MAX CLIP RoHS:否 類(lèi)別:風(fēng)扇，熱管理 >> 熱敏 - 配件 系列:Max Clip System™ 標(biāo)準(zhǔn)包裝:1 系列:- 附件類(lèi)型:基礎(chǔ)組件 適用于相關(guān)產(chǎn)品:Intel Pentium II Xeon 其它名稱(chēng):073974-0004073974-0004-E07397400040739740004-E73974-0004-E739740004739740004-E
MAX15000AEUB+ 功能描述:電流型 PWM 控制器 w/Programmable Switching Frequency RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*