- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄9924 > MAX1274AETC+T (Maxim Integrated Products)IC ADC 12BIT 1.8MSPS 12-TQFN PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1274AETC+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 2/18頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 1.8MSPS 12-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 1.8M |
| 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）： | 45mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 12-WQFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 12-TQFN-EP（4x4） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類(lèi)型： | 1 個(gè)差分，單極 |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
MAX1274/MAX1275
Serial Interface
Initialization After Power-Up
and Starting a Conversion
Upon initial power-up, the MAX1274/MAX1275 require a
complete conversion cycle to initialize the internal cali-
bration. Following this initial conversion, the part is ready
for normal operation. This initialization is only required
after a hardware power-up sequence and is not required
after exiting partial or full power-down mode.
To start a conversion, pull CNVST low. At CNVST’s
falling edge, the T/H enters its hold mode and a conver-
sion is initiated. SCLK runs the conversion and the data
can then be shifted out serially on DOUT.
Timing and Control
Conversion-start and data-read operations are con-
trolled by the CNVST and SCLK digital inputs. Figures 1
and 5 show timing diagrams, which outline the serial-
interface operation.
A CNVST falling edge initiates a conversion sequence;
the T/H stage holds the input voltage, the ADC begins
to convert, and DOUT changes from high impedance to
logic low. SCLK is used to drive the conversion
process, and it shifts data out as each bit of the conver-
sion is determined.
SCLK begins shifting out the data after the 4th rising
edge of SCLK. DOUT transitions tDOUT after each
SCLK’s rising edge and remains valid 4ns (tDHOLD)
after the next rising edge. The 4th rising clock edge
produces the MSB of the conversion at DOUT, and the
MSB remains valid 4ns after the 5th rising edge. Since
there are 12 data bits and 3 leading zeros, at least 16
rising clock edges are needed to shift out these bits.
For continuous operation, pull CNVST high between the
14th and the 16th SCLK rising edges. If CNVST stays
low after the falling edge of the 16th SCLK cycle, the
DOUT line goes to a high-impedance state on either
CNVST’s rising edge or the next SCLK’s rising edge.
1.8Msps, Single-Supply, Low-Power,
True-Differential, 12-Bit ADCs
10
______________________________________________________________________________________
DOUT
MODE
SCLK
CNVST
DOUT GOES HIGH IMPEDANCE ONCE CNVST GOES HIGH
CNVST MUST GO HIGH AFTER THE 3RD BUT BEFORE THE 14TH SCLK RISING EDGE
ONE 8-BIT TRANSFER
1ST SCLK RISING EDGE
PPD
0
D11
D10
D9
D8
D7
NORMAL
Figure 6. SPI Interface—Partial Power-Down Mode
Figure 5. Interface-Timing Sequence
tACQUIRE
CONTINUOUS-CONVERSION
SELECTION WINDOW
CNVST
tSETUP
DOUT
SCLK
414
12
8
3
16
HIGH IMPEDANCE
D1
D4
D6
D5
D9
D8
D7
D11
D10
POWER-MODE SELECTION WINDOW
D0
D2
D3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS3102E36-6S | CONN RCPT 6POS BOX MNT W/SCKT |
| IDT72V3672L10PF | IC FIFO 16384X36 10NS 120QFP |
| MS27508E12B4PA | CONN RCPT 4POS BOX MNT W/PINS |
| MS27473E18B28S | CONN PLUG 28POS STRAIGHT W/SCKT |
| MAX1224ETC+T | IC ADC 12BIT 1.5MSPS 12-TQFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1274BCTC | 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| MAX1274BCTC+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| MAX1274BCTC+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| MAX1274BCTC-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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| MAX1274BETC | 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。