ADS1285
- Selectable resolution-power modes:
- Dynamic range: 134 dB at 2 ms, 11.5 mW
- Dynamic range: 129 dB at 2 ms, 4.8 mW
- Flexible digital filter:
- Selectable sinc + FIR + IIR
- Linear or minimum phase
- High-pass filter
- THD: < –120 dB
- CMRR: 125 dB
- Data rates: 125 SPS to 4000 SPS
- Programmable gains: 1 to 64
- PGA bypass option
- SYNC input
- Clock error compensation
- Two-channel multiplexer
- Offset and gain calibration
- General-purpose digital I/Os
- Analog supply operation: 5 V, 3.3 V, or ±2.5 V
- Reference voltage options: 5 V, 4.096 V, or 2.5 V
The ADS1285 is a 32-bit, low-power, analog-to-digital converter (ADC), with a programmable gain amplifier (PGA) and a finite impulse response (FIR) filter. The ADC is designed for the demanding needs of seismology equipment requiring low-noise precision digitization and extended battery run time.
The low-noise PGA allows direct connection of geophones and transformer-coupled hydrophones without the need of an external amplifier.
The ADC incorporates a high-resolution, delta-sigma (ΔΣ) modulator and a FIR filter with programmable phase response. The high-pass filter removes dc and low-frequency content from the signal. Clock frequency error is compensated by the sample rate converter with 7-ppb resolution.
Choice of power modes optimize dynamic range verses power consumption. Power consumption is further reduced by PGA bypass operation.
The ADC is available in a compact 5-mm × 5-mm VQFN package and is fully specified over the –40°C to +85°C ambient temperature range.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | ADS1285 32-Bit, Delta-Sigma ADC for Seismic Applications datasheet (Rev. A) | PDF | HTML | 2022年 12月 12日 |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 |
設計與開發
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ADS1285EVM-PDK — 適用於 32 位元、高解析度、二通道 delta-sigma ADC 的 ADS1285 性能展示套件
ADS1285 評估模組 (EVM) 性能展示套件 (PDK) 是一款結合 ADS1285EVM-PDK 和精確主機介面 (PHI) 控制器板的平台。PHI 控制器板可讓 ADS1285EVM 透過 USB 埠連接電腦,並與設計用於完全評估 ADS1285 的軟體連接。
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
支援產品和硬體
產品
精密度運算放大器 (Vos<1mV)
一般用途運算放大器
音訊運算放大器
轉阻放大器
高速運算放大器 (GBW ≥ 50 MHz)
功率運算放大器
視訊放大器
線路驅動器
轉導放大器與雷射驅動器
全差分放大器
精確 ADC
生物感測 AFE
高速 ADC (≥10 MSPS)
觸控式螢幕控制器
差分放大器
儀器放大器
音訊線路接收器
類比電流感測放大器
數位電源監測器
配備整合式分流電阻器的類比電流感測放大器
具整合式分流電阻器的數位電源監測器
晶粒與晶圓服務
RF 接收器
RF 發射器
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
支援產品和硬體
產品
系列電壓參考
精確 ADC
生物感測 AFE
整合式精密 ADC 與 DAC
高速 ADC (≥10 MSPS)
精密 DAC (≤10 MSPS)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VQFN (RHB) | 32 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。