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ADS1118-Q1

現行

具有 PGA、振盪器、VREF、溫度感測器和 SPI 的車用 16 位元、860-SPS、4 通道 ΔΣ ADC

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ADS1118-Q1

現行
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產品詳細資料

Resolution (Bits) 16 Sample rate (max) (ksps) 0.86 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.3 Analog supply voltage (min) (V) 2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2 Digital supply (max) (V) 5.5
Resolution (Bits) 16 Sample rate (max) (ksps) 0.86 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.3 Analog supply voltage (min) (V) 2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2 Digital supply (max) (V) 5.5
VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide supply range: 2 V to 5.5 V
  • Low current consumption:
    • Continuous mode: only 150 µA
    • Single-shot mode: automatic power-down
  • Programmable data rate: 8 SPS to 860 SPS
  • Single-cycle settling
  • Internal low-drift voltage reference
  • Internal temperature sensor:
    2°C (maximum) error
  • Internal oscillator
  • Internal PGA
  • Four single-ended or two differential inputs
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide supply range: 2 V to 5.5 V
  • Low current consumption:
    • Continuous mode: only 150 µA
    • Single-shot mode: automatic power-down
  • Programmable data rate: 8 SPS to 860 SPS
  • Single-cycle settling
  • Internal low-drift voltage reference
  • Internal temperature sensor:
    2°C (maximum) error
  • Internal oscillator
  • Internal PGA
  • Four single-ended or two differential inputs

The ADS1118-Q1 is a precision, low power, 16-bit analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals. The ADS1118-Q1 integrates a programmable gain amplifier (PGA), voltage reference, oscillator, and high-accuracy temperature sensor. These features, along with a wide power-supply range from 2 V to 5.5 V, make the
ADS1118-Q1 ideally suited for power- and space-constrained, sensor-measurement applications.

The ADS1118-Q1 performs conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing both large and small signals to be measured with high resolution. An input multiplexer (mux) allows measurement of two differential or four single-ended inputs. The high-accuracy temperature sensor is used for system-level temperature monitoring, or cold-junction compensation for thermocouples.

The ADS1118-Q1 operates either in continuous-conversion mode, or in a single-shot mode that automatically powers down after a conversion. Single-shot mode significantly reduces current consumption during idle periods. Data are transferred through a serial peripheral interface (SPI™). The ADS1118-Q1 is specified from –40°C to +125°C.

The ADS1118-Q1 is a precision, low power, 16-bit analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals. The ADS1118-Q1 integrates a programmable gain amplifier (PGA), voltage reference, oscillator, and high-accuracy temperature sensor. These features, along with a wide power-supply range from 2 V to 5.5 V, make the
ADS1118-Q1 ideally suited for power- and space-constrained, sensor-measurement applications.

The ADS1118-Q1 performs conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing both large and small signals to be measured with high resolution. An input multiplexer (mux) allows measurement of two differential or four single-ended inputs. The high-accuracy temperature sensor is used for system-level temperature monitoring, or cold-junction compensation for thermocouples.

The ADS1118-Q1 operates either in continuous-conversion mode, or in a single-shot mode that automatically powers down after a conversion. Single-shot mode significantly reduces current consumption during idle periods. Data are transferred through a serial peripheral interface (SPI™). The ADS1118-Q1 is specified from –40°C to +125°C.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 ADS1118-Q1 Automotive, Low-Power, SPI-Compatible, 16-Bit Analog-to-Digital Converter With Internal Reference and Temperature Sensor datasheet (Rev. B) PDF | HTML 2020/5/15
Circuit design Precision measurement circuit with 8 different channels and SPI (Rev. A) PDF | HTML 2024/9/19
應用說明 Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 2024/3/18
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29
電子書 Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020/6/19
功能安全資訊 ADS1118-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA 2020/3/11
類比設計期刊 How delta-sigma ADCs work, Part 1 (Rev. A) 2016/9/19
類比設計期刊 How delta-sigma ADCs work, Part 2 2011/11/9

設計與開發

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開發板

ADS1118EVM — ADS1118 16 位元、860-SPS、4 通道、Delta-Sigma ADC 評估模組

The ADS1118 evaluation module (EVM) is a complete solution for evaluation of the ADS1118 ultra-small, low-power, precision 16-bit analog-to-digital converter (ADC). Power and I/O are provided via USB connection and a simple software interface. Analog inputs can be connected to a terminal block (...)

使用指南: PDF | HTML
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支援軟體

ADS1118-C-EXAMPLE-CODE — ADS1118 example C code

Expedite your embedded design using this example C code for the ADS1118
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模擬型號

ADS1118 IBIS Model

SBAM083.ZIP (70 KB) - IBIS 模型
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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參考設計

TIDA-01235 — 車用高溫感測器 (HTS) 參考設計

TIDA-01235 參考設計的主要重點是提供高密度、低成本和高準確度的熱電偶類比前端設計中涉及的保護策略可保護類比前端免受耦合暫態影響。此設計符合汽車廢氣溫度感測器的要求。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGS) 10 Ultra Librarian
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