AD7176-2BRUZ - 24-Bit 250kSPS Sigma-Delta ADC | Analog Devices
Артикул: AD7176-2BRUZ ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $13.43 | $13,43 |
| 10 | $12.5 | $125,00 |
| 100 | $11.2 | $1.120,00 |
| 500 | $10.1 | $5.050,00 |
| 1.000 | $9.5 | $9.500,00 |
AD7176-2BRUZ Обзор
A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution (typically 16 to 24 bits) with relatively low cost and power. It is widely used in precision measurement, industrial process control, and medical instrumentation where high accuracy and low noise are critical. The AD7176-2 belongs to the Analog Devices precision ADC family, which includes other high-performance converters like the AD7175-2 and AD7177-2, and is positioned as a fast-settling, multiplexed solution for multi-channel systems.
Key features of the AD7176-2BRUZ include a maximum output data rate of 250 kSPS, a 20 µs settling time for full accuracy, and a programmable digital filter with multiple filter options (sinc5 + sinc1, etc.). It offers excellent DC accuracy with an integral nonlinearity (INL) of ±2 ppm of FSR typical, and a noise-free resolution of up to 24 bits at lower data rates. The device also includes a 2.5 V internal reference with 2 ppm/°C drift, a reference buffer, and a temperature sensor. It supports both SPI and QSPI serial interfaces, and includes a GPIO and a crystal oscillator driver.
Technically, the AD7176-2 uses a high-performance sigma-delta modulator with a digital filter that can be configured for various settling times and noise performance. The crosspoint multiplexer allows flexible input routing, enabling the measurement of multiple sensors without external muxing. The device also features a 50 Hz/60 Hz rejection mode for power-line noise suppression, and a burnout current source for sensor fault detection. The internal reference can be bypassed for external reference use, and the device supports both unipolar and bipolar input ranges.
Typical applications include process control, industrial automation, weigh scales, temperature and pressure measurement, and medical instrumentation. The fast settling time makes it suitable for multiplexed systems where multiple channels need to be scanned quickly. The low noise and high accuracy also make it ideal for precision data acquisition in laboratory and test equipment.
When designing with the AD7176-2BRUZ, ensure proper decoupling of the AVDD and DVDD supplies with 10 µF and 0.1 µF capacitors, and use a clean analog ground plane. The reference input should be bypassed with a 10 µF capacitor if using the internal reference. For best performance, keep the analog input traces short and shielded, and avoid routing digital signals near the analog inputs.
Аналоги без доработки для AD7176-2BRUZ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с AD7176-2BRUZ (тот же форм-фактор и посадочное место) — отличается по Input Type, Interface, Package, Number of Channels, Sampling Rate.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
AD7175-2BRUZ
✅ Прямая замена✓ В наличии
$9.62 / шт.
Открыть даташит →AD7177-2BRUZ
✅ Прямая замена✓ В наличии
$19.84 / шт.
Открыть даташит →AD7172-2BRUZ
✅ Прямая замена✓ В наличии
$8.64 / шт.
Открыть даташит →ADS127L01
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ADS127L01IPBSR
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
AD7176-2BRUZ Максимальные параметры и электрические характеристики
| Разрешение | 24 Bit |
| Number of Input Channels | 2 Differential or 4 Pseudo-Differential |
| Частота дискретизации | 250 kSPS |
| Settling Time | 20 µs |
| Input Type | Differential, Pseudo-Differential |
| Data Interface | SPI, QSPI |
| Reference Type | Internal, External |
| Internal Reference Voltage | 2.5 V |
| Internal Reference Drift | 2 ppm/°C |
| INL (Интегральная нелинейность) | ±2 ppm of FSR typical |
| Analog Supply Voltage | 2.5 V to 5.5 V |
| Digital Supply Voltage | 2.3 V to 5.5 V |
| Диапазон рабочих температур | -40°C to +105°C |
| Корпус | 24-Lead TSSOP |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
| Lead-Free | Yes |
Конфигурация выводов AD7176-2BRUZ
| Контакт 1 | AVDD — Analog power supply |
| Контакт 2 | AIN0 — Analog input 0 |
| Контакт 3 | AIN1 — Analog input 1 |
| Контакт 4 | AIN2 — Analog input 2 |
| Контакт 5 | AIN3 — Analog input 3 |
| Контакт 6 | REF+ — Positive reference input |
| Контакт 7 | REF- — Negative reference input |
| Контакт 8 | AVSS — Analog ground |
| Контакт 9 | DVDD — Digital power supply |
| Контакт 10 | DGND — Digital ground |
| Контакт 11 | SCLK — Serial clock input |
| Контакт 12 | DIN — Serial data input |
| Контакт 13 | DOUT — Serial data output |
| Контакт 14 | CS — Chip select |
| Контакт 15 | SYNC — Synchronization input |
| Контакт 16 | GPIO — General purpose I/O |
| Контакт 17 | XIN — Crystal oscillator input |
| Контакт 18 | XOUT — Crystal oscillator output |
| Контакт 19 | REFOUT — Reference output |
| Контакт 20 | REFOUT- — Reference output negative |
| Контакт 21 | AVDD — Analog power supply |
| Контакт 22 | AVDD — Analog power supply |
| Контакт 23 | AVSS — Analog ground |
| Контакт 24 | AVSS — Analog ground |
Типичное применение
AD7176-2BRUZ подходит для 6 применениеs: Process Control, Weigh Scales, Temperature Measurement, Pressure Measurement, Medical Instrumentation, Data Acquisition Systems.
Process Control
The AD7176-2BRUZ is ideal for process control applications such as PLC/DCS modules, where it provides 24-bit resolution and 250 kSPS sampling rate. Its fast 20 µs settling time enables rapid multi-channel scanning, and the crosspoint multiplexer allows flexible input routing for temperature and pressure sensors. The internal 2.5 V reference with 2 ppm/°C drift ensures stable measurements over temperature, while the 50 Hz/60 Hz rejection mode suppresses power-line noise. The device operates from 2.5 V to 5.5 V supplies, making it compatible with industrial power rails. Its SPI interface simplifies integration with microcontrollers, and the burnout current source aids sensor fault detection.
Рекомендуется
Weigh Scales
The AD7176-2BRUZ excels in weigh scale applications due to its high resolution (24-bit) and low noise, enabling precise weight measurements. The fast settling time of 20 µs allows quick updates for dynamic weighing, while the internal reference reduces external component count. The device supports both unipolar and bipolar input ranges, accommodating various load cell configurations. Its SPI interface simplifies connection to microcontrollers, and the programmable digital filter can be optimized for noise vs. speed trade-offs. The burnout current source helps detect sensor faults, improving system reliability. The wide operating temperature range (-40°C to +105°C) ensures performance in industrial environments.
Рекомендуется
Temperature Measurement
The AD7176-2BRUZ is well-suited for temperature measurement systems, offering 24-bit resolution and a 20 µs settling time for fast response. It can interface directly with thermocouples, RTDs, and thermistors through its crosspoint multiplexer, which supports 2 differential or 4 pseudo-differential inputs. The internal 2.5 V reference with 2 ppm/°C drift ensures accurate measurements over temperature, and the 50 Hz/60 Hz rejection mode minimizes power-line interference. The device's low noise performance allows precise temperature readings, while the SPI interface enables easy integration with microcontrollers. The burnout current source can detect open or shorted sensors, enhancing system reliability.
Рекомендуется
Pressure Measurement
The AD7176-2BRUZ is ideal for pressure measurement applications, providing 24-bit resolution and a 250 kSPS sampling rate for high-speed data acquisition. Its fast 20 µs settling time enables rapid scanning of multiple pressure sensors, and the crosspoint multiplexer allows flexible input routing. The internal reference with 2 ppm/°C drift ensures stable measurements, while the device's low noise performance is critical for precise pressure readings. The SPI interface simplifies connection to microcontrollers, and the programmable digital filter can be tailored to the application's noise and speed requirements. The wide operating temperature range makes it suitable for industrial pressure transmitters.
Рекомендуется
Medical Instrumentation
The AD7176-2BRUZ is suitable for medical instrumentation such as patient monitoring and diagnostic equipment, where high accuracy and low noise are essential. Its 24-bit resolution and 250 kSPS sampling rate enable precise measurement of physiological signals, while the fast settling time supports multiplexed channels. The internal reference with 2 ppm/°C drift ensures stable performance over temperature, and the device's low power consumption is beneficial for portable devices. The SPI interface allows easy integration with medical-grade microcontrollers, and the burnout current source aids in sensor fault detection. The device operates from 2.5 V to 5.5 V supplies, compatible with battery-powered systems.
Рекомендуется
Data Acquisition Systems
The AD7176-2BRUZ is a key component in data acquisition systems, offering 24-bit resolution and a 250 kSPS sampling rate for high-speed, high-accuracy measurements. Its fast 20 µs settling time enables rapid multi-channel scanning, and the crosspoint multiplexer allows flexible input routing. The internal reference with 2 ppm/°C drift ensures stable measurements, while the device's low noise performance is critical for precision applications. The SPI interface simplifies connection to data acquisition controllers, and the programmable digital filter can be optimized for various signal types. The device operates from 2.5 V to 5.5 V supplies, making it versatile for different system architectures.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для AD7176-2BRUZ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | AD7175-2BRUZ | AD7177-2BRUZ | AD7172-2BRUZ | ADS127L01 |
|---|---|---|---|---|---|
| Package | 24-Lead TSSOP | 24-Lead TSSOP | 24-Lead TSSOP | 24-Lead TSSOP | 24-Lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 24 Bit | 24 Bit | 32 Bit | 24 Bit | 24 Bit |
| Max Data Rate | 250 kSPS | 250 kSPS | 10 kSPS | 31.25 kSPS | 400 kSPS |
| Interface | SPI, QSPI | SPI, QSPI | SPI, QSPI | SPI, QSPI | SPI |
Ключевые отличия
- Fast settling time of 20 µs (против AD7172-2BRUZ)
- Higher data rate of 250 kSPS (против AD7177-2BRUZ)
- Crosspoint multiplexer for flexible input routing (против ADS127L01)
Заметки по проектированию
Decouple AVDD and DVDD with 10 µF and 0.1 µF capacitors placed close to the pins. Use separate analog and digital ground planes to minimize noise coupling. The AD7176-2 operates from 2.5V to 5.5V analog supply and 2.3V to 5.5V digital supply; ensure stable supplies to maintain ADC accuracy.
Keep analog input traces short and shielded, and avoid routing digital signals near the analog inputs. Use a solid ground plane under the ADC. For best performance, place the reference bypass capacitor (10 µF) close to the REF+ and REF- pins. Follow the layout guidelines in the AD7176-2 datasheet (Rev. D).
Do not exceed the absolute maximum ratings for supply voltages. Ensure the reference input is properly bypassed if using the internal reference. The crosspoint multiplexer allows flexible input routing, but be aware of settling time when switching channels. Use the 50 Hz/60 Hz rejection mode for power-line noise suppression in industrial environments.
Информация о соответствии
RoHS compliant and lead-free per distributor listings. Not AEC-Q100 qualified.
