ADS127L21
- Programmable FIR filter
- Programmable IIR filter
- Wideband or low-latency filter modes
- Programmable data rates:
- Wideband filter: 512kSPS
- Low-latency filter: 1.365MSPS
- Conversion latency (low-latency filter): 3µs
- AC accuracy with dc precision:
- Dynamic range (200kSPS): 111.5dB (typical)
- THD: –125dB (typical)
- INL: 0.4ppm of FS (typical)
- Offset drift: 50nV/°C (typical)
- Gain drift: 0.5ppm/°C (typical)
- Power-scalable speed ranges:
- Max speed: 512kSPS, 33mW (typical)
- High speed: 400kSPS, 26mW (typical)
- Mid speed: 200kSPS, 14mW (typical)
- Low speed: 50kSPS, 4.3mW (typical)
- Input range: ±VREF or ±2VREF
- Buffered inputs
- Internal or external clock operation
- Functional Safety-Capable
The ADS127L21 is a 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) featuring a programmable digital filter. This digital filter has data rates up to 512kSPS using the wideband filter and up to 1365kSPS using the low-latency filter. The device offers an excellent combination of ac performance and dc precision with low power consumption.
Programmable infinite and finite impulse response (IIR and FIR) digital filters allow custom filter profiles, such as A-weighting compensation and frequency notch filters. The wideband or low-latency filter option optimize ac-signal performance or data throughput of dc signals, all in one device.
The low-drift modulator achieves excellent dc precision with low wideband noise for outstanding ac performance. The power-scalable architecture features four speed modes to optimize data rate, resolution, and power consumption. Signal and reference input buffers reduce driver loading for increased accuracy.
The serial interface features daisy-chain capability to reduce the number of signal lines over an isolation barrier. SPI input data and register memory contents are validated by cyclic-redundancy check (CRC) to enhance operational reliability.
The small 3mm × 3mm WQFN package is designed for space-limited applications. The device is fully specified for operation over the –40°C to +125°C temperature range.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | ADS127L21 512kSPS, Programmable Filter, 24-Bit, Wideband Delta-Sigma ADC datasheet (Rev. B) | PDF | HTML | 2024年 4月 16日 |
Functional safety information | ADS1x7Lx1x Functional Safety FIT Rate, FMD and Pin FMA (Rev. C) | PDF | HTML | 2024年 9月 26日 | |
Application note | Achieve High SNR with the PGA855, Fully Differential Programmable-Gain Amplifier | PDF | HTML | 2024年 3月 21日 | |
Application brief | Benefits of Integrated FIR and IIR Filters in Delta-Sigma ADCs | PDF | HTML | 2023年 5月 11日 | |
Application note | Four Channel Analog to Digital Interface with Sitara AM243x MCU+ | PDF | HTML | 2023年 4月 20日 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
EVM User's guide | ADS127L21EVM-PDK Evaluation Module | PDF | HTML | 2023年 2月 8日 | |
Certificate | ADS127L21EVM-PDK EU RoHS Declaration of Conformity (DoC) | 2023年 1月 24日 |
設計與開發
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ADS127L21EVM-PDK — ADS127L21 評估模組,適用於具有易於驅動的輸入和寬頻或低延遲濾波器的 ADC
ADC-DESIGN-CALC — Online design calculator tool for TI Precision ADCs
支援產品和硬體
產品
精確 ADC
隔離式 ADC
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)
接收器
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
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
TIDA-010945 — 適用於數位萬用表的精密訊號鏈參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RUK) | 20 | 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。