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ADS1148-Q1

現行

具有 PGA、參考和 IDAC 且適用於精密感測器量測的車用 16 位元 2-kSPS ADC

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產品規格表

ADS1148-Q1

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 16 Sample rate (max) (ksps) 2 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive Reference mode External, Internal Input voltage range (max) (V) 2.125, 4.25 Input voltage range (min) (V) -2.125, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 2.3 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 16 Sample rate (max) (ksps) 2 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive Reference mode External, Internal Input voltage range (max) (V) 2.125, 4.25 Input voltage range (min) (V) -2.125, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 2.3 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
TSSOP (PW) 28 62.08 mm² (9.7 mm × 6.4 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: –40°C to +125°C
    • HBM ESD Classification 2
    • CDM ESD Classification C5
  • Programmable Gain: 1 V/V to 128 V/V
  • Programmable Data Rates: 5 SPS to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Analog Multiplexer With 8 Independently Selectable Inputs
  • Dual-Matched Programmable Excitation Current Sources: 50 µA to 1.5 mA
  • Internal 2.048-V Voltage Reference
  • Internal 4.096-MHz Oscillator
  • Internal Temperature Sensor
  • Open Sensor Detection
  • Power-Supply and External Reference Monitoring
  • Self and System Calibration
  • 8 General-Purpose I/Os
  • SPI-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 5.25 V
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: –40°C to +125°C
    • HBM ESD Classification 2
    • CDM ESD Classification C5
  • Programmable Gain: 1 V/V to 128 V/V
  • Programmable Data Rates: 5 SPS to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Analog Multiplexer With 8 Independently Selectable Inputs
  • Dual-Matched Programmable Excitation Current Sources: 50 µA to 1.5 mA
  • Internal 2.048-V Voltage Reference
  • Internal 4.096-MHz Oscillator
  • Internal Temperature Sensor
  • Open Sensor Detection
  • Power-Supply and External Reference Monitoring
  • Self and System Calibration
  • 8 General-Purpose I/Os
  • SPI-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 5.25 V

The ADS1148-Q1 is a highly-integrated, precision, 16-bit analog-to-digital converter (ADC) that includes many integrated features to reduce system cost and component count for sensor measurement applications. The device features a low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1148-Q1 integrates a low-drift voltage reference, and two matched programmable excitation current sources (IDACs).

The device offers a fully flexible multiplexer that allows both positive and negative inputs to be selected independently. In addition, the multiplexer integrates sensor burn-out detection, voltage bias for thermocouples, system monitoring, and eight general-purpose digital I/Os (GPIOs). The PGA provides selectable gains up to 128 V/V. These features provide a complete front-end solution for temperature sensor measurement applications, including thermocouples, thermistors, and resistance temperature detectors (RTDs), and other small-signal measurements. The digital filter settles in a single cycle to support fast channel cycling when using the input multiplexer and provides data rates up to 2 kSPS. For data rates of 20 SPS or less, both the 50-Hz and 60-Hz interference are rejected by the filter.

The ADS1148-Q1 is a highly-integrated, precision, 16-bit analog-to-digital converter (ADC) that includes many integrated features to reduce system cost and component count for sensor measurement applications. The device features a low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1148-Q1 integrates a low-drift voltage reference, and two matched programmable excitation current sources (IDACs).

The device offers a fully flexible multiplexer that allows both positive and negative inputs to be selected independently. In addition, the multiplexer integrates sensor burn-out detection, voltage bias for thermocouples, system monitoring, and eight general-purpose digital I/Os (GPIOs). The PGA provides selectable gains up to 128 V/V. These features provide a complete front-end solution for temperature sensor measurement applications, including thermocouples, thermistors, and resistance temperature detectors (RTDs), and other small-signal measurements. The digital filter settles in a single cycle to support fast channel cycling when using the input multiplexer and provides data rates up to 2 kSPS. For data rates of 20 SPS or less, both the 50-Hz and 60-Hz interference are rejected by the filter.
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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 ADS1148-Q1 Automotive,16-Bit, 2-kSPS, Analog-to-Digital Converter with Integrated Programmable Gain Amplifier (PGA), Reference, and Oscillator datasheet (Rev. A) PDF | HTML 2016/9/7
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
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

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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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ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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TSSOP (PW) 28 Ultra Librarian
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