AD7792BRUZ - 16-Bit Sigma-Delta ADC with PGA & Reference | Analog Devices
부품 번호: AD7792BRUZ ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $8.24 | $8.24 |
| 10 | $7.42 | $74.20 |
| 100 | $6.18 | $618.00 |
| 500 | $5.35 | $2,675.00 |
| 1,000 | $4.94 | $4,940.00 |
AD7792BRUZ 개요
A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is widely used in precision measurement systems where low noise and high accuracy are required. The AD7792BRUZ belongs to the family of sigma-delta ADCs, which are part of the broader category of data converters, essential in bridging analog signals to digital processing.
Key features include a 16-bit resolution, three differential inputs, a PGA with gains of 1, 2, 4, 8, 16, 32, 64, and 128, and an internal reference with low drift. The device also provides programmable excitation current sources, burnout currents, and a bias voltage generator, enhancing its versatility in sensor applications. The low power consumption of 500 µA typical makes it ideal for battery-powered systems.
The AD7792BRUZ uses a sigma-delta modulator followed by a digital filter, providing excellent noise performance and inherent anti-aliasing. The on-chip PGA allows direct connection to low-level sensors such as thermocouples and strain gauges, eliminating the need for external amplification. The device communicates via a serial peripheral interface (SPI), simplifying integration with microcontrollers.
Typical applications include temperature measurement with thermocouples and RTDs, pressure and strain gauge measurement, and industrial process control. The low noise and high resolution make it suitable for precision instrumentation and weigh scales.
When designing with the AD7792BRUZ, ensure proper decoupling of the AVDD and DVDD supplies and place the reference decoupling capacitor close to the REFIN pins. The SPI interface should be isolated from noisy digital lines to maintain signal integrity.
드롭인 대체품: AD7792BRUZ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: AD7792BRUZ (동일 폼 팩터 및 풋프린트) — 차이점: Package, Number of Channels, Supply Current, Resolution, Sampling Rate.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
AD7793BRUZ
✅ 드롭인✓ 재고 있음
$5.25 / 개
데이터시트 보기 →AD7794BRUZ
✅ 드롭인✓ 재고 있음
$5.46 / 개
데이터시트 보기 →AD7795BRUZ
✅ 드롭인✓ 재고 있음
$5.6 / 개
데이터시트 보기 →AD7796BRUZ
✅ 드롭인✓ 재고 있음
$3.1 / 개
데이터시트 보기 →AD7797BRUZ
✅ 드롭인✓ 재고 있음
$3.49 / 개
데이터시트 보기 →AD7798BRUZ
✅ 드롭인✓ 재고 있음
$3.85 / 개
데이터시트 보기 →AD7799BRUZ
✅ 드롭인✓ 재고 있음
$5.41 / 개
데이터시트 보기 →AD7792BRUZ 최대 정격 & 전기적 특성
| 분해능 | 16 Bit |
| Number of Inputs | 3 Differential |
| Architecture | Sigma-Delta |
| Output Data Rate | 470 SPS |
| Supply Voltage Range | 2.7 V to 5.25 V |
| 프로그래머블 이득 증폭기 (PGA) | Gains: 1, 2, 4, 8, 16, 32, 64, 128 |
| Internal Reference | Yes, low drift |
| Excitation Current Sources | Programmable |
| Burnout Currents | Yes |
| Bias Voltage Generator | Yes |
| 인터페이스 | SPI |
| Power Consumption | 500 µA typical |
| 패키지 | 16-Lead TSSOP |
| 동작 온도 범위 | -40°C to +105°C |
| RoHS 상태 | Compliant |
AD7792BRUZ 핀 구성
| 핀 1 | SCLK — Serial clock input |
| 핀 2 | DIN — Serial data input |
| 핀 3 | DOUT/RDY — Serial data output / ready |
| 핀 4 | CS — Chip select |
| 핀 5 | GND — Ground |
| 핀 6 | AVDD — Analog supply |
| 핀 7 | AIN1(+) — Analog input 1 positive |
| 핀 8 | AIN1(-) — Analog input 1 negative |
| 핀 9 | AIN2(+) — Analog input 2 positive |
| 핀 10 | AIN2(-) — Analog input 2 negative |
| 핀 11 | AIN3(+) — Analog input 3 positive |
| 핀 12 | AIN3(-) — Analog input 3 negative |
| 핀 13 | REFIN(+) — Reference input positive |
| 핀 14 | REFIN(-) — Reference input negative |
| 핀 15 | DVDD — Digital supply |
| 핀 16 | PDR — Power-down reset |
일반적인 애플리케이션
AD7792BRUZ 적합 용도: 6 애플리케이션s: Temperature Measurement, Pressure and Strain Gauge Measurement, Industrial Process Control, Weigh Scales, Portable Instrumentation, Medical Monitoring.
Temperature Measurement
The AD7792BRUZ is ideal for temperature measurement with thermocouples and RTDs. Its on-chip PGA with gains up to 128 amplifies low-level sensor signals directly, while programmable excitation current sources drive RTDs. The 16-bit resolution and low noise ensure accurate temperature readings. The internal reference provides stability over temperature, and the SPI interface simplifies data transfer to a microcontroller. This makes it suitable for industrial process control and precision instrumentation.
추천
Pressure and Strain Gauge Measurement
The AD7792BRUZ is well-suited for pressure and strain gauge measurements due to its low noise and high resolution. The PGA allows direct connection to bridge sensors, and the internal reference provides a stable voltage for ratiometric measurements. The device's low power consumption is beneficial for portable pressure monitors. The SPI interface enables easy integration with microcontrollers for data logging and control. This makes it ideal for industrial and medical applications.
추천
Industrial Process Control
In industrial process control, the AD7792BRUZ provides accurate analog-to-digital conversion for monitoring and control loops. Its 16-bit resolution and low noise ensure precise measurement of process variables such as temperature, pressure, and flow. The device's wide supply voltage range and industrial temperature range make it robust for harsh environments. The SPI interface allows seamless connection to PLCs and microcontrollers. This makes it a reliable choice for factory automation and process monitoring.
추천
Weigh Scales
The AD7792BRUZ is commonly used in weigh scale applications due to its high resolution and low noise. The on-chip PGA amplifies the small signals from load cells, and the internal reference provides a stable voltage for ratiometric measurements. The device's low power consumption is advantageous for battery-operated scales. The SPI interface simplifies communication with a microcontroller for display and processing. This makes it ideal for precision weighing in industrial and retail settings.
추천
Portable Instrumentation
The AD7792BRUZ is suitable for portable instrumentation due to its low power consumption of 500 µA typical and wide supply voltage range. It can be powered directly from a battery, and its small 16-lead TSSOP package saves board space. The device's high resolution and low noise make it ideal for handheld multimeters, data loggers, and portable medical devices. The SPI interface allows easy connection to low-power microcontrollers. This makes it a versatile choice for battery-powered measurement tools.
추천
Medical Monitoring
The AD7792BRUZ is used in medical monitoring devices such as patient monitors and diagnostic equipment. Its low noise and high resolution ensure accurate measurement of physiological signals like temperature and pressure. The device's low power consumption is critical for battery-operated medical devices. The internal reference and PGA reduce external component count, simplifying design. The SPI interface enables integration with medical-grade microcontrollers. This makes it suitable for reliable and compact medical instrumentation.
추천
추천 제품 요약
엔지니어링 참조 데이터: AD7792BRUZ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD7793BRUZ | AD7794BRUZ | AD7795BRUZ |
|---|---|---|---|---|
| Package | 16-Lead TSSOP | 16-Lead TSSOP | 16-Lead TSSOP | 16-Lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 Bit | 24 Bit | 24 Bit | 16 Bit |
| Number of Inputs | 3 Differential | 3 Differential | 6 Differential | 6 Differential |
| Output Data Rate | 470 SPS | 470 SPS | 470 SPS | 470 SPS |
| Supply Voltage Range | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Power Consumption | 500 µA | 500 µA | 500 µA | 500 µA |
| Internal Reference | Yes | Yes | Yes | Yes |
주요 차별점
- 16-bit resolution with low noise (vs AD7793BRUZ)
- Three differential inputs (vs AD7794BRUZ)
- Low power consumption (vs AD7793BRUZ)
설계 노트
Decouple the AVDD and DVDD pins with 0.1 µF and 10 µF capacitors placed close to the device. Use separate analog and digital ground planes to minimize noise coupling. The AD7792BRUZ operates from 2.7V to 5.25V, so ensure the supply is clean and stable.
Place the reference decoupling capacitor close to the REFIN pins. Use a low-leakage capacitor, such as a 0.1 µF X7R, to maintain reference stability. Keep the analog input traces short and shielded to reduce noise pickup.
Isolate the SPI lines (SCLK, DIN, DOUT/RDY, CS) from analog input traces to prevent digital noise from coupling into the analog path. Use series resistors on the SPI lines if necessary. Ensure a solid ground plane under the device.
규정 준수 정보
RoHS compliant per Analog Devices product page. Other compliance data not specified in provided data.