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参数资料
| 型号： | MAX157ACPA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 108KSPS 2CH 8-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 位数： | 10 |
| 采样率（每秒）： | 108k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 727mW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 输入数目和类型： | 2 个单端，单极 |
MAX157/MAX159
QSPI Interface
Using the high-speed QSPI interface with CPOL = 0
and CPHA = 0, the MAX157/MAX159 supports a maxi-
mum fSCLK of 2.17MHz. The QSPI circuit in Figure 9a
can be programmed to perform a conversion on each
of the two channels for the MAX157.
Figure 9b shows the QSPI interface timing.
PIC16 with SSP Module
and PIC17 Interface
The MAX157/MAX159 are compatible with a PIC16/
PIC17 microcontroller (C), using the synchronous seri-
al port (SSP) module.
To establish SPI communication, connect the controller
as shown in Figure 10a 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 2 and 3.
In SPI mode, the PIC16/PIC17 Cs allow eight bits of
data to be synchronously transmitted and received
simultaneously. Two consecutive 8-bit readings (Figure
10b) are necessary to obtain the entire 10-bit result
from the ADC. DOUT data transitions on the serial
clock’s falling edge and is clocked into the C on
SCLK’s rising edge. The first 8-bit data stream contains
three leading ones, the channel identification, and the
first four data bits starting with the MSB. The second 8-
bit data stream contains the remaining bits, D5 through
D0, and the two sub-bits S1 and S0.
Layout, Grounding, and Bypassing
For best performance use printed circuit boards
(PCBs), wire-wrap configurations are not recommend-
ed, since the layout should ensure proper separation of
analog and digital traces. Run analog and digital lines
anti-parallel to each other, and don’t layout digital sig-
nal paths underneath the ADC package. Use separate
analog and digital PCB ground sections with only one
+2.7V, Low-Power, 2-Channel,
108ksps, Serial 10-Bit ADCs in 8-Pin MAX
12
______________________________________________________________________________________
HIGH-Z
SAMPLING
INSTANT
D9
CHID
D8
D7
D6
D5
12
3
4
5
6
7
8
10
911
12
13
14
15
16
D4
D3
D2
D1
D0
S0
S1
DOUT*
CS/SHDN
SCLK
1ST BYTE READ
2ND BYTE READ
MSB
LSB
*WHEN CS/SHDN IS HIGH, DOUT = HIGH -Z
Figure 8c. SPI/MICROWIRE Interface Timing Sequence (CPOL = CPHA = 0)
CS/SHDN
SCLK
DOUT
CS
SCK
MISO
VDD
SS
QSPI
MAX157
MAX159
Figure 9a. QSPI Connections
MAX157
MAX159
CS/SHDN
SCLK
DOUT
I/O
SK
SI
MICROWIRE
CS/SHDN
SCLK
DOUT
I/O
SCK
MISO
VDD
SS
SPI
MAX157
MAX159
Figure 8a. SPI Connections
Figure 8b. MICROWIRE Connections
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX157ACPA+ | 功能描述:模数转换器 - ADC 10-Bit 2Ch 108ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX157ACUA | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX157ACUA+ | 功能描述:模数转换器 - ADC 10-Bit 2Ch 108ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX157ACUA+T | 功能描述:模数转换器 - ADC 10-Bit 2Ch 108ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX157ACUA-T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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