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参数资料
| 型号： | MAX1149BEUP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/25页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 116KSPS 20-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 74 |
| 位数： | 14 |
| 采样率（每秒）： | 116k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 879mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 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 |
| 产品目录页面： | 1395 (CN2011-ZH PDF) |
MAX1146–MAX1149
Multichannel, True-Differential,
Serial, 14-Bit ADCs
20
______________________________________________________________________________________
edge and is clocked into the P on SCLK’s rising edge.
The first 8-bit data stream contains the first 8-bits of
DOUT starting with the MSB. The second 8-bit data
stream contains the remaining 6 result bits.
QSPI Interface
Using the high-speed QSPI interface (Figure 17) with
CPOL = 0 and CPHA = 0, the MAX1146–MAX1149 sup-
port a maximum fSCLK of 2.1MHz. One 16-bit reading is
necessary to obtain the entire 14-bit result from the
ADC. DOUT data transitions on the serial clock’s falling
edge and is clocked into the P on SCLK’s rising edge.
The first 14 bits are the data.
PIC16/PIC17 SSP Module Interface
The MAX1146–MAX1149 are compatible with a
PIC16/PIC17 microcontroller (C), using the synchro-
nous serial-port (SSP) module. To establish SPI com-
munication, connect the controller as shown in Figure
18 and configure the PIC16/PIC17 as system master.
Initialize the synchronous serial-port control register
(SSPCON) and synchronous serial-port status register
(SSPSTAT) to the bit patterns shown in Tables 8 and 9.
In SPI mode, the PIC16/PIC17 Cs allow 8 bits of data
to be synchronously transmitted and received simulta-
neously. Two consecutive 8-bit readings are necessary
to obtain the entire 14-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 the first 8 data bits starting
with the MSB. The second data stream contains the
remaining bits, D5 through D0.
INPUT VOLTAGE (LSB)
BINAR
Y
OUTPUT
CODE
(LSB)
0123
16383
VREF
V
REF
16381
0...000
0...001
0...010
0...011
1...111
1...110
1...101
1...100
1 LSB =
VREF
16384
Figure 14. Unipolar Transfer Function
INPUT VOLTAGE (LSB)
TWO'S
COMPLEMENT
BINAR
Y
OUTPUT
CODE
(LSB)
0123
8191
8192
8193
16383
VREF
V
REF
16381
1...000
1...001
1...010
1...011
1...111
0...000
0...001
0...111
0...110
0...101
0...100
1 LSB =
VREF
16384
Figure 15. Bipolar Transfer Function
SCLK
DOUT
I/O
SCK
MISO
VDD
SS
SPI
MAX1146–
MAX1149
CS
Figure 16a. SPI Connections
MAX1146–
MAX1149
SCLK
DOUT
I/O
SK
SI
MICROWIRE
CS
Figure 16b. MICROWIRE Connections
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1149BEUP+ | 功能描述:模数转换器 - ADC 14-Bit 8Ch 116ksps 3.3V 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 |
| MAX1149BEUP+T | 功能描述:模数转换器 - ADC 14-Bit 8Ch 116ksps 3.3V 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 |
| MAX1149BEUP-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 |
| MAX1149CGP | 制造商:Maxim Integrated Products 功能描述:MULTICHANNEL, TRUE-DIFFERENTIAL, SERIAL, 14-B - Rail/Tube |
| MAX1149CUP | 制造商:Maxim Integrated Products 功能描述:MULTICHANNEL, TRUE-DIFFERENTIAL, SERIAL, 14-B - Rail/Tube |
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