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参数资料
| 型号： | MAX191BEWG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 100KSPS 24-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 位数： | 12 |
| 采样率（每秒）： | 100k |
| 数据接口： | MICROWIRE?，并联，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 941mW |
| 电压电源： | 双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个单端，单极；2 个单端，双极；1 个差分，单极；1 个差分，双极 |
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 digi-
tal (especially clock) lines parallel to one another, or
digital lines underneath the ADC package.
Figure 23 shows the recommended system ground
connections. Establish a single-point ground (“star”
ground point) at AGND, separate from the logic
ground. Connect all other analog grounds and DGND
to it. No other digital-system ground should be con-
nected to this single-point analog ground. The ground
return to the power supply for this star ground should
be low impedance and as short as possible for noise-
free operation.
High-frequency noise in the VDD power supply may
affect the high-speed comparator in the ADC. Bypass
these supplies to the single-point analog ground with
MAX191
Low-Power, 12-Bit Sampling ADC
with Internal Reference and Power-Down
______________________________________________________________________________________
21
MAX191
AIN +
AIN -
D0–D11
VIN
R7
10k
R8
10k
VREF
R6
10k
R5
10k
R1
10k
R2
100
R3
10k
R4
49.9
VREF
R9*
20k
0.1
F*
R10*
49.9
* CONNECT AIN- TO AGND WHEN USING DUAL SUPPLIES
MAX480
Figure 21b. Offset (±10mV) and Gain (±1%) Trim Circuit
01 . . . 111
01 . . . 110
00 . . . 010
00 . . . 001
11 . . . 111
11 . . . 110
00 . . . 000
10 . . . 001
10 . . . 000
11 . . . 101
0V
VREF - 1LSB
VREF
––––
2
0V
SINGLE SUPPLY
VREF
AIN- = ––––
2
(
)
DUAL SUPPLY
AIN- = 0V
VREF
–––– - 1LSB
2
-VREF
––––
2
Figure 22. Bipolar Transfer Function
SUPPLIES
+5V
-5V
GND
VDD
AGND
VSS DGND
+5V
DGND
R* = 10
DIGITAL
CIRCUITRY
*OPTIONAL
MAX191
Figure 23. Power-Supply Grounding Connection
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX191BEWG-W | 制造商:Maxim Integrated Products 功能描述:PLS. RUSH THIS REQUEST, LARRY SCHMIDT/MAT'LS WAITING FOR - Rail/Tube |
| MAX191BMRG | 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 |
| MAX191BMRG/883B | 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 |
| MAX191EVKIT-DIP | 功能描述:数据转换 IC 开发工具 Evaluation System/Evaluation Kit for the MAX191 RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX191EVSYS-DIP | 功能描述:数据转换 IC 开发工具 Low-Power 12-Bit Sampling ADC with Internal Reference and Power-Down RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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