- 您现在的位置：买卖IC网 > PDF目录9925 > MAX149BEPP+ (Maxim Integrated Products)IC ADC 10BIT SERIAL 20-DIP PDF资料下载
参数资料
| 型号： | MAX149BEPP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT SERIAL 20-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 18 |
| 位数： | 10 |
| 采样率（每秒）： | 133k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 889mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-PDIP |
| 包装： | 管件 |
| 输入数目和类型： | 8 个单端，单极；8 个单端，双极；4 个差分，单极；4 个差分，双极 |
+2.7V to +5.25V, Low-Power, 8-Channel,
Serial 10-Bit ADCs
MAX148/MAX149
21
High-Speed Digital Interfacing with QSPI
The MAX148/MAX149 can interface with QSPI using the
circuit in Figure 20 (fSCLK = 2.0MHz, CPOL = 0, CPHA =
0). This QSPI circuit can be programmed to do a conver-
sion on each of the eight channels. The result is stored
in memory without taxing the CPU, since QSPI incorpo-
rates its own microsequencer.
The MAX148/MAX149 are QSPI compatible up to the
maximum external clock frequency of 2MHz.
TMS320LC3x Interface
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 (trans-
mit 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.
3) An 8-bit word (1XXXXX11) should be written to the
MAX148/MAX149 to initiate a conversion and place
the device into external clock mode. See Table 1 to
select the proper XXXXX bit values for your specific
application.
4) The MAX148/MAX149’s SSTRB output is monitored
through 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.
5) 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.
6) Pull CS high to disable the MAX148/MAX149 until
the next conversion is initiated.
Figure 22. TMS320 Serial-Interface Timing Diagram
SCLK
DIN
SSTRB
DOUT
START
SEL2
SEL1
SEL0
UNI/BIP
SGL/DIF
PD1
PD0
MSB
B8
S1
S0
HIGH
IMPEDANCE
HIGH
IMPEDANCE
CS
相关PDF资料 |
PDF描述 |
|---|---|
| ICL3245IVZ-T | IC 3DRVR/5RCVR RS232 3V 28-TSSOP |
| VE-2WR-MX-F1 | CONVERTER MOD DC/DC 7.5V 75W |
| HIN211CAZ-T | IC 4DRVR/5RCVR RS232 5V 28-SSOP |
| MS27497E10B13P | CONN RCPT 13POS WALL MNT W/PINS |
| VE-BWM-MW-F4 | CONVERTER MOD DC/DC 10V 100W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX149BEPP+ | 功能描述:模数转换器 - ADC 10-Bit 8Ch 133ksps 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 |
| MAX149BMAP/PR | 功能描述:模数转换器 - ADC 10-Bit 8Ch 133ksps 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 |
| MAX149BMAP/PR2 | 制造商:Maxim Integrated Products 功能描述:A/D CONVERTER, 10-BIT, SERIAL, 8-CHANNEL - Rail/Tube |
| MAX149BMAP/PR3 | 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 |
| MAX149BMAP/PR3-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 |
发布紧急采购，3分钟左右您将得到回复。