Analog Devices / Maxim Integrated MAX11254 Δ-Σ 模数转换器（ADC）
美信 MAX11254 Δ-Σ 模数转换器（ADC）是一款 24 位模数转换器，具有出色的性能和很低的功率耗散。该设备具有高达 64ksps 的采样率，适用于精确的直流测量。MAX11254 通过一个 SPI 串行接口进行通信，采用了小型（5mmx5mm）TQFN 封装。MAX11254 提供了一个 6.2nV/√Hz 噪音可编程增益放大器（PGA），增益设定值在 1 倍到 128 倍之间。集成 PGA 可将输入信号与开关电容采样网络隔离开来。同时，PGA 能使 MAX11254 直接连接高阻信号源，而不会影响动态范围。
特性
- High resolution for industrial applications that require a wide dynamic range
- 133dB SNR at 50sps
- 124dB SNR at 1000sps
- Longer battery life for portable applications
- 2.2mA operating mode current
- 1µA sleep current
- Single or split analog supplies provide input voltage range flexibility
- 2.7V to 3.6V (single supply) or ±1.8V (split supply)
- Enables system integration
- Low noise, 6.2nV/√Hz PGA with gains of 1, 2, 4, 8, 16, 32, 64, and 128
- 6-channel, fully differential input
- Enables on-demand device and system gain and offset calibration
- User-programmable offset and gain registers
- Robust performance in a small package
- -40°C to +125°C operating temperature range
- TQFN package, 5mm x 5mm
应用
- Analog I/O for programmable logic controllers
- Battery-powered instrumentation
- Pressure sensors
- Weigh scales
Additional Resources
发布日期: 2015-06-10
| 更新日期: 2023-04-14