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参数资料
| 型号： | MAX149BEAP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/23页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT SERIAL 20-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 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）： | 640mW |
| 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-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
| 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
20
Layout, Grounding, and Bypassing
For best performance, use PCBs. Wire-wrap boards
are not recommended. Board layout should ensure that
digital and analog signal lines are separated from each
other. Do not run analog and digital (especially clock)
lines parallel to one another, or digital lines underneath
the ADC package.
Figure 19 shows the recommended system ground con-
nections. Establish a single-point analog ground (star
ground point) at AGND, separate from the logic ground.
Connect all other analog grounds and DGND to the star
ground. No other digital system ground should be con-
nected to this ground. For lowest-noise operation, the
ground return to the star ground’s power supply should
be low impedance and as short as possible.
High-frequency noise in the VDD power supply may
affect the high-speed comparator in the ADC. Bypass
the supply to the star ground with 0.1FF and 1FF capaci-
tors close to pin 20 of the MAX148/MAX149. Minimize
capacitor lead lengths for best supply-noise rejection.
If the power supply is very noisy, a 10I resistor can be
connected as a lowpass filter (Figure 19).
Figure 20. MAX148/MAX149 QSPI Connections, External Reference
Figure 21. MAX148/MAX149-to-TMS320 Serial Interface
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
MC683XX
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
VDD
SCLK
DIN
SSTRB
DOUT
DGND
AGND
REFADJ
VREF
(POWER SUPPLIES)
SCK
PCS0
MOSI
MISO
0.1F
1F
(GND)
0.1F
ANALOG
INPUTS
+3V
+2.5V
MAX148
MAX149
SHDN
CS
+
XF
CLKX
CLKR
DX
DR
FSR
SCLK
DIN
DOUT
SSTRB
TMS320LC3x
CS
MAX148
MAX149
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX149BEAP-TG071 | 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 |
| MAX149BEPP | 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 |
| 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 |
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