ADS1120-Q1

활성

소형 신호 센서용 PGA 및 VREF를 지원하는 오토모티브 16비트 2kSPS 4채널 저전력 델타 시그마 ADC

제품 상세 정보

Resolution (Bits) 16 Sample rate (max) (ksps) 2 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 External, Internal, Supply Input voltage range (max) (V) 2.85, 5.6 Input voltage range (min) (V) -2.85, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.4 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.3 Digital supply (max) (V) 5.5
Resolution (Bits) 16 Sample rate (max) (ksps) 2 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 External, Internal, Supply Input voltage range (max) (V) 2.85, 5.6 Input voltage range (min) (V) -2.85, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.4 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.3 Digital supply (max) (V) 5.5
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide supply range: 2.3 V to 5.5 V
  • Programmable gain: 1 V/V to 128 V/V
  • Programmable data rates: 5 SPS to 2 kSPS
  • 16-bit, noise-free resolution at 20 SPS
  • Simultaneous 50-Hz and 60-Hz rejection at
    20 SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources:
    50 µA to 1.5 mA
  • Internal 2.048-V reference: 5 ppm/°C (typ) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor:
    0.5°C (typ) accuracy
  • SPI-compatible interface (mode 1)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide supply range: 2.3 V to 5.5 V
  • Programmable gain: 1 V/V to 128 V/V
  • Programmable data rates: 5 SPS to 2 kSPS
  • 16-bit, noise-free resolution at 20 SPS
  • Simultaneous 50-Hz and 60-Hz rejection at
    20 SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources:
    50 µA to 1.5 mA
  • Internal 2.048-V reference: 5 ppm/°C (typ) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor:
    0.5°C (typ) accuracy
  • SPI-compatible interface (mode 1)

The ADS1120-Q1 is a precision, 16-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128 V/V. This PGA makes the ADS1120-Q1 ideally-suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4 V/V, allowing for single-ended measurements.

Power consumption is as low as 120 µA when operating in duty-cycle mode with the PGA disabled. Communication to the device is established through a mode 1 SPI-compatible interface. The ADS1120-Q1 is offered in a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.

The ADS1120-Q1 is a precision, 16-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128 V/V. This PGA makes the ADS1120-Q1 ideally-suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4 V/V, allowing for single-ended measurements.

Power consumption is as low as 120 µA when operating in duty-cycle mode with the PGA disabled. Communication to the device is established through a mode 1 SPI-compatible interface. The ADS1120-Q1 is offered in a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.

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* 데이터 시트 ADS1120-Q1 Automotive, 4-Channel, 2-kSPS, Low-Power, 16-Bit ADC With Integrated PGA and Reference datasheet (Rev. B) PDF | HTML 2020. 5. 15
애플리케이션 노트 Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 2024. 3. 18
애플리케이션 노트 A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 2024. 3. 13
애플리케이션 노트 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023. 3. 29
애플리케이션 노트 RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 (Rev. A) PDF | HTML 2023. 3. 27
e북 Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020. 6. 19
기능 안전 정보 ADS1120-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2020. 4. 24
아날로그 디자인 학술지 How delta-sigma ADCs work, Part 1 (Rev. A) 2016. 9. 19
e북 Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015. 3. 19
아날로그 디자인 학술지 How delta-sigma ADCs work, Part 2 2011. 11. 9

설계 및 개발

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평가 보드

ADS1120EVM — ADS1120 평가 모듈

ADS1120 평가 모듈(EVM)은 ADS1120, 16비트, 멀티 채널, 델타-시그마 ADC(아날로그-디지털 컨버터)를 위한 평가 시스템입니다. 이 EVM은 최소의 회로와 함께 ADS1120을 사용하여 프로토타입 제작 및 부품 평가를 위해 기능을 시연합니다. ADS1120의 핀은 ADS1120EVM 커넥터의 다양한 연결 방식을 통해 액세스할 수 있습니다. 이 EVM에는 개인용 컴퓨터에서 사용하기 위한 MSP430도 포함되어 있습니다. 이 EVM은 USB 포트를 통해 컴퓨터에 연결하도록 해 줍니다. ADS1120EVM은 플러그인을 (...)

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지원 소프트웨어

ADS1220-C-EXAMPLE-CODE — ADS1220 Example Code

Expedite your embedded design using this example C code for the ADS1220 product family
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시뮬레이션 모델

ADS1220 IBIS Model (Rev. A)

SBAM171A.ZIP (82 KB) - IBIS 모델
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계산 툴

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

아날로그 엔지니어의 계산기는 아날로그 회로 설계 엔지니어가 정기적으로 사용하는 많은 반복 계산의 속도를 높이도록 설계되었습니다. 이 PC 기반 툴은 피드백 저항을 사용한 연산 증폭기 게인 설정부터 아날로그-디지털 컨버터(ADC) 드라이브 버퍼 회로 안정화를 위한 적절한 회로 설계 요소 선택에 이르기까지 다양한 일반적인 계산 목록이 포함된 그래픽 인터페이스를 제공합니다.

이 계산기는 독립 실행형 툴로 유용할 뿐만 아니라 아날로그 엔지니어의 포켓 레퍼런스에 설명된 개념과도 잘 어울립니다.

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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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