홈 데이터 컨버터 아날로그-디지털 컨버터(ADC) 정밀 ADC
홈
데이터 컨버터
아날로그-디지털 컨버터(ADC)
정밀 ADC

ADS7870

활성

12비트 ADC, MUX, PGA 및 내부 레퍼런스 데이터 수집 시스템

지금 주문하기
데이터 시트

ADS7870

활성
데이터 시트 지금 주문하기

제품 상세 정보

Resolution (Bits) 12 Sample rate (max) (ksps) 52 Number of input channels 8 Interface type SPI Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 6 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 52 Number of input channels 8 Interface type SPI Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 6 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
SSOP (DB) 28 79.56 mm² (10.2 mm × 7.8 mm)
  • PGA Gains: 1, 2, 4, 5, 8, 10, 16, 20V/V
  • Programmable Input (Up to 4-channel Differential/Up to 8-channel Single-Ended or Some Combination)
  • 1.15-V, 2.048-V or 2.5-V Internal Reference
  • SPI/DSP Compatible Serial Interface (≤20 MHz)
  • Throughput Rate: 52 kSamples/sec
  • Error/Overload Indicator
  • Programmable Output 2s Complement/Binary
  • 2.7-V to 5.5-V Single-Supply Operation
  • 4-Bit Digital I/O Via Serial Interface
  • Pin Compatible With ADS7871
  • SSOP-28 Package
  • APPLICATIONS
    • Portable Battery-Powered Systems
    • Low-Power Instrumentation
    • Low-Power Control Systems
    • Smart Sensor Applications

QSPI and SPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corporation.
All other trademarks are the property of their respective owners.
  • PGA Gains: 1, 2, 4, 5, 8, 10, 16, 20V/V
  • Programmable Input (Up to 4-channel Differential/Up to 8-channel Single-Ended or Some Combination)
  • 1.15-V, 2.048-V or 2.5-V Internal Reference
  • SPI/DSP Compatible Serial Interface (≤20 MHz)
  • Throughput Rate: 52 kSamples/sec
  • Error/Overload Indicator
  • Programmable Output 2s Complement/Binary
  • 2.7-V to 5.5-V Single-Supply Operation
  • 4-Bit Digital I/O Via Serial Interface
  • Pin Compatible With ADS7871
  • SSOP-28 Package
  • APPLICATIONS
    • Portable Battery-Powered Systems
    • Low-Power Instrumentation
    • Low-Power Control Systems
    • Smart Sensor Applications

QSPI and SPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corporation.
All other trademarks are the property of their respective owners.

The ADS7870 (US patents 6140872, 6060874) is a complete low-power data acquisition system on a single chip. It consists of a 4-channel differential/8-channel single-ended multiplexer, precision programmable gain amplifier, 12-bit successive approximation analog-to-digital (A/D) converter, and a precision voltage reference.

The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise.

For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D input.

The offset voltage of the PGA is auto zeroed. Gains of 1, 2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125 mV to produce full-scale digital outputs.

The ADS7870 contains an internal reference, which is trimmed for high initial accuracy and stability vs temperature. Drift is typically 10 ppm/°C. An external reference can be used in situations where multiple ADS7870s share a common reference.

The serial interface allows the use of SPI™, QSPI™, Microwire™, and 8051-family protocols, without glue logic.

The ADS7870 (US patents 6140872, 6060874) is a complete low-power data acquisition system on a single chip. It consists of a 4-channel differential/8-channel single-ended multiplexer, precision programmable gain amplifier, 12-bit successive approximation analog-to-digital (A/D) converter, and a precision voltage reference.

The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise.

For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D input.

The offset voltage of the PGA is auto zeroed. Gains of 1, 2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125 mV to produce full-scale digital outputs.

The ADS7870 contains an internal reference, which is trimmed for high initial accuracy and stability vs temperature. Drift is typically 10 ppm/°C. An external reference can be used in situations where multiple ADS7870s share a common reference.

The serial interface allows the use of SPI™, QSPI™, Microwire™, and 8051-family protocols, without glue logic.
filter 기타 정밀 ADC 찾기
다운로드 스크립트와 함께 비디오 보기 비디오

기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.
7개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 12-Bit ADC, MUX, PGA and Internal Reference Data Acquisition System datasheet (Rev. C) 2005. 12. 19
e북 Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015. 5. 21
애플리케이션 노트 Getting the Full Potential from your ADC (Rev. B) 2015. 5. 15
애플리케이션 노트 Determining Minimum Acquisition Times for SAR ADCs, part 2 2011. 3. 17
애플리케이션 노트 Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 2010. 11. 10
사용 설명서 ADS7870/ADS7871 EVM 2003. 9. 9
애플리케이션 노트 Interfacing the ADS7870 and the MC68HC11E9 Analog to Microcomputer Made Easy 2000. 9. 27

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

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.

지원되는 제품 및 하드웨어
설계 툴

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.
지원되는 제품 및 하드웨어
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
SSOP (DB) 28 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상