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參數(shù)資料
| 型號： | MAX1273CPA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, MO-058, DIP-8 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 850K |
| 代理商： | MAX1273CPA |
M
Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
______________________________________________________________________________________
15
CS
SCLK
DOUT
I/O
SCK
MISO
SPI
SS
MAX1272
MAX1273
V
DD
Figure 10a. SPI Connections
MAX1272
MAX1273
CS
SCLK
DOUT
I/O
SCK
SI
MICROWIRE
Figure 10b. MICROWIRE Connections
QSPI Interface
Using the high-speed QSPI interface with CPOL = 0
and CPHA = 0, the MAX1272/MAX1273 support a max-
imum f
SCLK
of 1.4MHz. Figure 11 shows the MAX1272/
MAX1273 connected to a QSPI master.
PIC16 with SSP Module and
PIC17 Interface
The MAX1272/MAX1273 are compatible with a
PIC16/PIC17 controller (μC) using the synchronous ser-
ial-port (SSP) module.
To establish SPI communication, connect the controller
as shown in Figure 12 and configure the PIC16/PIC17
as system master by initializing its synchronous serial-
port control register (SSPCON) and synchronous serial-
port status register (SSPSTAT) to the bit patterns shown
in Tables 5 and 6.
In SPI mode, the PIC16/PIC17 μCs allow 8 bits of data
to be transmitted and received simultaneously. Three
consecutive 8-bit readings are necessary to obtain the
entire 12-bit result from the ADC. DOUT data transitions
on the serial clock
’
s falling edge and is clocked into the
μC on SCLK
’
s rising edge. The first 8-bit data stream
contains all zeros. The second 8-bit data stream con-
tains a leading zero followed by the MSB through D5.
The third 8-bit data stream contains bits D4
–
D0 fol-
lowed by trailing zeros.
Transfer Function
Output data coding for the MAX1272/MAX1273 is bina-
ry in unipolar mode with:
FS
=
and two
’
s complement binary in bipolar mode with:
2
LSB
=
Code transitions occur halfway between successive
integer LSB values. Figures 13a and 13b show the
input/output transfer functions for uni-polar and bipolar
operations, respectively. For full-scale (FS) values, see
Tables 2 and 3.
1
4096
FS
×
|
|
1
4096
LSB
CS
SCLK
DOUT
CS
SCK
MISO
QSPI
V
DD
SS
MAX1272
MAX1273
Figure 11. QSPI Connections
I/O
SCLK
DOUT
GND
SCK
SDI
PIC16/PIC17
V
DD
V
DD
MAX1272
MAX1273
CS
Figure 12. SPI Interface Connection for a PIC16/PIC17
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相關(guān)代理商/技術(shù)參數(shù) |
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| MAX1273CPA+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 487ksps 4.18V Precision 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1273CUA | 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1273CUA+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC FAULT-PROTECTED 12-BIT 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1273CUA+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC FAULT-PROTECTED 12-BIT 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1273EPA | 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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