AD1555APRL: 24-Bit, 121 dB typical SNR, Sigma-Delta A/D converter with Integrated PGA PLCC-28封装

The AD1555 is a complete sigma-delta modulator, combined with a programmable gain amplifier, intended for low frequency, high dynamic range measurement applications. The AD1555 outputs a ones-density bit stream proportional to the analog input. When used in conjunction with the AD1556 digital filter/decimator, the industry's highest performance ADC at a bandwidth of 1+ kHz is realized.

The continuous-time analog modulator input architecture avoids the need for an external anti-alias filter. The programmable gain front end simplifies system design, extends the dynamic range, and reduces system board area. Low operating power and standby modes makes the AD1555 ideal for remote battery-powered data acquisition systems.

AD1555APRL 特点

• Fourth Order Σ-Δ Modulator
• Large Dynamic Range
  - 116 dB Min, 120 dB Typical @ 1 ms
  - 117 dB Typical @ 0.5 ms
• Low Input Noise: 80 nV rms @ 4 ms with Gain of 34,128
• Low Distortion: –111 dB Max, –120 dB Typical
• Low Intermodulation: 122 dB
• Sampling Rate at 256 kSPS
• Very High Jitter Tolerance
• No External Antialias Filter Required
• Programmable Gain Front End
• Input Range: ±2.25 V
• Robust Inputs
• Gain Settings: 1, 2.5, 8.5, 34, 128

AD1555APRL 功能框图

AD1555 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD1555AP	量产	28 ld PLCC	28	工业
AD1555APRL	量产	28 ld PLCC	28	工业
AD1555APZ	量产	28 ld PLCC	28	工业
AD1555APZRL	量产	28 ld PLCC	28	工业
AD1555BP	量产	28 ld PLCC	28	工业
AD1555BPZ	量产	28 ld PLCC	28	工业
AD1555BPZRL	量产	28 ld PLCC	28	工业

AD1555APRL 应用技术支持与电子电路设计开发资源下载

1. AD1555 数据手册DataSheet下载. pdf
2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
3. ADC模数转换器选型指南 . PDF