- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383316 > MAX1267BCEG (MAXIM INTEGRATED PRODUCTS INC) 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface PDF資料下載
參數(shù)資料
| 型號： | MAX1267BCEG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-24 |
| 文件頁數(shù)： | 12/19頁 |
| 文件大?。?/td> | 307K |
| 代理商： | MAX1267BCEG |
M
265ksps, +3V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
12
______________________________________________________________________________________
External Acquisition
Use external acquisition mode for precise control of the
sampling aperture and/or dependent control of acquisi-
tion and conversion times. The user controls acquisition
and start of conversion with two separate write pulses.
The first pulse, written with ACQMOD = 1, starts an
acquisition interval of indeterminate length. The second
write pulse, written with ACQMOD = 0 (all other bits in
control byte unchanged), terminates acquisition and
starts conversion on
WR
rising edge (Figure 5).
The address bits for the input multiplexer must have the
same values on the first and second write pulse.
Power-down mode bits (PD0, PD1) can assume new
values on the second write pulse (see
Power-Down
Modes
section). Changing other bits in the control byte
corrupts the conversion.
Reading a Conversion
A standard interrupt signal,
INT
, is provided to allow the
MAX1265/MAX1267 to flag the μP when the conversion
has ended and a valid result is available.
INT
goes low
when the conversion is complete and the output data is
ready (Figures 4 and 5). It returns high on the first read
cycle or if a new control byte is written.
Selecting Clock Mode
The MAX1265/MAX1267 operate with either an internal
or an external clock. Control bits D6 and D7 select
either internal or external clock mode. The part retains
the last-requested clock mode if a power-down mode is
selected in the current input word. For both internal and
external clock mode, internal or external acquisition
can be used. At power-up, the MAX1265/MAX1267
enter the default external clock mode.
Internal Clock Mode
Select internal clock mode to release the μP from the
burden of running the SAR conversion clock. Bit D7 of
the control byte must be set to 1 and bit D6 must be set
to zero. The internal clock frequency is then selected,
resulting in a conversion time of 3.6μs. When using the
internal clock mode, tie the CLK pin either high or low
to prevent the pin from floating.
t
CS
t
CSWS
t
WR
t
ACQ
t
CONV
t
DH
t
DS
t
INT1
t
D0
t
TR
t
CSWH
ACQMOD = 1
CS
WR
D11
–
D0
INT
RD
DOUT
ACQMOD = 0
VALID DATA
CBYTE
CONTROL
BYTE
HIGH-Z
HIGH-Z
Figure 5. Conversion Timing Using External Acquisition Mode
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1265BCEI | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1265BEEI | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1265-MAX1267 | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1267ACEG | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1265ACEI | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1267BCEG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 2Ch 265ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1267BCEG+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 2Ch 265ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1267BCEG-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: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1267BEEG | 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: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1267BEEG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 2Ch 265ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
發(fā)布緊急采購，3分鐘左右您將得到回復。