ADS1288

ADS1288 32-Bit, Delta-Sigma ADC for Seismic Applications

1Features •Powerconsumption: –PGAoperation:5mW(typical) –Bufferoperation:3mW(typical) •Dynamicrange: –PGAgain:1,500SPS(122dB,typical) –Bufferoperation:500SPS(122dB,typical) •THD:

ADS1288

ADS1288 32-Bit, Delta-Sigma ADC for Seismic Applications

1Features •Powerconsumption: –PGAoperation:5mW(typical) –Bufferoperation:3mW(typical) •Dynamicrange: –PGAgain:1,500SPS(122dB,typical) –Bufferoperation:500SPS(122dB,typical) •THD:

ADS1288

Low-power, 32-bit two-channel delta-sigma ADC for seismic and geospace exploration; 功耗： \n \nPGA 运行：5mW（典型值）\n \n缓冲器运行：3mW（典型值）\n \n\n \n动态范围： \n \nPGA 增益：1，500SPS（122dB 典型值）\n \n缓冲器运行：500SPS（122dB 典型值）\n \n\n \nTHD：< –120dB（典型值）\n \nCMRR：120dB（典型值）\n \n灵活的数字滤波器： \n \n可选的正弦 + FIR + IIR\n \n线性或最小相位\n \n高通滤波器\n \n\n \n数据速率：125SPS 至 2000SPS\n \nPGA 增益：1 至 64\n \nSYNC 输入\n \n时钟误差补偿\n \n双通道多路转接器\n \n偏移和增益校准\n \n通用数字 I/O\n \n模拟电源供电：5V、3.3V 或 ±2.5V;

ADS1288 是一款 32 位低功耗模数转换器 (ADC)，具有一个可编程增益放大器 (PGA) 和一个有限脉冲响应 (FIR) 滤波器。该 ADC 可满足地震监测设备需要低功耗来延长电池运行时间的严苛要求。\n\n低噪声 PGA 通过 1 至 64 的增益扩展了 ADC 动态范围。PGA 允许直接连接地震检波器和变压器耦合水听器，无需外部放大器。可选的单位增益缓冲器可降低功耗。\n\n该 ADC 包含一个高分辨率 Δ-Σ 调制器和一个具有可编程相位响应的 FIR 滤波器。高通滤波器可从信号中移除直流和低频成分。时钟频率误差由频率精度高达 7ppb 的采样速率转换器补偿。\n\n该 ADC 支持 3.3V 工作电压，可更大限度地降低器件功耗。在缓冲器模式下运行时，功耗为 3mW（典型值），在 PGA 模式下运行时，功耗为 5mW（典型值）。\n\n该 ADC 采用紧凑的 5mm × 5mm VQFN 封装，额定工作环境温度范围为 –40°C 至 +85°C。

ADS1288_V01

ADS1288 32-Bit, Delta-Sigma ADC for Seismic Applications

1Features •Powerconsumption: –PGAoperation:5mW(typical) –Bufferoperation:3mW(typical) •Dynamicrange: –PGAgain:1,500SPS(122dB,typical) –Bufferoperation:500SPS(122dB,typical) •THD:

ADS1288IRHBR

丝印：ADS1288；Package：VQFN；ADS1288 32-Bit, Delta-Sigma ADC for Seismic Applications

1Features •Powerconsumption: –PGAoperation:5mW(typical) –Bufferoperation:3mW(typical) •Dynamicrange: –PGAgain:1,500SPS(122dB,typical) –Bufferoperation:500SPS(122dB,typical) •THD:

ADS1288IRHBR

丝印：ADS1288；Package：VQFN；ADS1288 32-Bit, Delta-Sigma ADC for Seismic Applications

1Features •Powerconsumption: –PGAoperation:5mW(typical) –Bufferoperation:3mW(typical) •Dynamicrange: –PGAgain:1,500SPS(122dB,typical) –Bufferoperation:500SPS(122dB,typical) •THD:

ADS1288IRHBT

丝印：ADS1288；Package：VQFN；ADS1288 32-Bit, Delta-Sigma ADC for Seismic Applications

1Features •Powerconsumption: –PGAoperation:5mW(typical) –Bufferoperation:3mW(typical) •Dynamicrange: –PGAgain:1,500SPS(122dB,typical) –Bufferoperation:500SPS(122dB,typical) •THD: