Maxim Integrated MAX11156 18位、500ksps SAR模数转换器
Maxim Integrated MAX11156 18位、500ksps SAR模数转换器是业界最小的真正双极性+/-5V、18位模数转换器。MAX11156具有真正双极性输入范围、小尺寸和内部基准，提供优秀的交流和直流性能。该款器件可测量±5V (10VP-P)输入范围，采用
单一5V电源供电。特有获得专利的电荷泵架构，使其能对高阻抗源直接采样。MAX11156内部集成了大小可选的6ppm/℃基准和
内部缓冲器，省去了采用外部基准的成本和空间。MAX11156可产生94.6dB SNR和-105dB THD (典型值)。Maxim器件保证18位的无丢码位数。它采用兼容SPI的串行接口进行通信，使用2.5V、3V、3.3V或5V逻辑电平。串行接口能够以菊链形式连接多个ADC，用于多通道应用；器件提供占线指示器选项，简化系统同步和定时。
视频
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特性
- High DC and AC Accuracy
- 18-Bit Resolution with No Missing Codes
- SNR: 94.6dB
- THD: -105dB at 10kHz
- ±2.5 LSB INL (typ)
- ±0.4 LSB DNL (typ)
- Internal Reference and Reference Buffer Save Cost and Board Space
- 6ppm/°C (typ)
- Tiny 12-Pin 3mm x 3mm TDFN Package
- Bipolar ±5V Analog Input Range Saves External Signal Conditioning
应用
- Data Acquisition Systems
- Industrial Control Systems/Process Control
- Medical Instrumentation
- Automatic Test Equipment
Typical Operating Circuit
