Analog Devices / Maxim Integrated MAX11253 16 位 Δ-Σ 模数转换器
美信 美信 MAX11253 16 位 Δ-Σ 模数转换器是一款 6 通道 16 位 Δ-Σ 模数转换器，具有出色的性能和很低的功率耗散。采样率高达 64ksps，可以精密测量直流。MAX11253 通过一个 SPI 串行接口进行通信，采用了小型 (5mmx5mm) TQFN 封装。MAX11253 提供了一个 6.2nV 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 MAX11253 直接连接高阻信号源，而不会影响动态范围。
The Analog Devices MAX11253 offers a 6.2nV/ noise programmable gain amplifier (PGA) with gain settings from 1x to 128x. The integrated PGA isolates the signal inputs from the switched capacitor sampling network. The PGA also enables the MAX11253 to interface directly with high-impedance sources without compromising the available dynamic range.
特性
- High resolution for industrial applications that require a wide dynamic range:
- 98dB 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
Typical Application Circuit
发布日期: 2015-09-04
| 更新日期: 2023-04-13