Analog Devices

AD7946BCPZ - 14-Bit 500kSPS PulSAR ADC | Analog Devices

Name: AD7946BCPZ
Brand: Analog Devices
Price: 9.5 USD
Availability: InStock

Артикул: AD7946BCPZ ✓ Активен

В наличии Отправка в течение 1–3 рабочих дней

-0.5 V to 5.8 V Vdss 10-lead LFCSP (3 mm x 3 mm) Package

От $9.5 USD / шт.

MOQ: 1 |

Цена обновлена: 2026-08-22

Оптовые цены

Кол-во	Цена за ед.	Итого
1	$13.26	$13,26
10	$12.5	$125,00
100	$11.2	$1.120,00
500	$10.1	$5.050,00
1.000	$9.5	$9.500,00

ℹ️ Все цены указаны в USD

Открыть datasheet (PDF) Смотреть аналоги

Количество

AD7946BCPZ Обзор

The AD7946BCPZ is a 14-bit, charge redistribution, successive approximation analog-to-digital converter (ADC) from Analog Devices, operating from a single 5 V power supply (VDD). It achieves a throughput of 500 kSPS in Warp mode, 450 kSPS in Normal mode, and 380 kSPS in Impulse mode, making it suitable for high-speed data acquisition systems. The device is available in a 10-lead LFCSP (3 mm x 3 mm) package, offering a compact solution for space-constrained designs.

An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values, enabling digital processing of real-world signals. The AD7946 is a successive approximation register (SAR) ADC, which uses a charge redistribution architecture to achieve high accuracy and speed with low power consumption. SAR ADCs are widely used in applications requiring a balance of resolution, speed, and power efficiency, such as industrial process control, medical instrumentation, and portable devices.

Key features of the AD7946 include 14-bit resolution with no missing codes, integral nonlinearity (INL) of 0.4 LSB typical and 1 LSB maximum, and differential nonlinearity (DNL) of 0.25 LSB typical and 0.7 LSB maximum. The device operates over an industrial temperature range of -40°C to +85°C and features a pseudo-differential analog input with an input voltage range of -0.5 V to 5.8 V. The AD7946 also includes a 1-pole low-pass filter on the analog input, which helps to reduce noise from the driving amplifier.

The AD7946 uses a charge redistribution architecture with an internal sample-and-hold circuit, providing excellent AC and DC performance. The device supports multiple power-down modes, including Warp, Normal, and Impulse, allowing designers to optimize power consumption versus throughput. The SPI-compatible serial interface enables easy connection to microcontrollers and DSPs, and the device is fully specified for operation from a single 5 V supply.

Typical applications for the AD7946 include high-speed data acquisition, industrial process control, medical instrumentation, and portable battery-powered devices. Its low power consumption and small package make it ideal for portable and space-constrained applications, while its high accuracy and speed suit demanding industrial and medical systems.

When designing with the AD7946, ensure that the analog input is driven by a low-impedance source and that adequate decoupling is provided on the VDD pin. The device's noise performance is excellent, allowing the use of a noisier amplifier to meet system noise specifications, as the internal filter attenuates high-frequency noise.

Аналоги без доработки для AD7946BCPZ — 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 AD7946BCPZ (тот же форм-фактор и посадочное место) — отличается по Architecture, Package, Input Type, Resolution, Operating Temperature.

AD7944BCPZ

Analog Devices

Architecture: SAR

Package: 20-LFCSP (4x4 mm)

Resolution: 14 Bit

Сравнить с AD7946BCPZ →

AD7949BCPZRL7

Analog Devices

Architecture: SAR (Successive Approximation Register)

Package: 20-LFCSP (4x4 mm) with exposed pad

Input Type: Single-Ended, Pseudobipolar, Differential (GND sense)

Сравнить с AD7946BCPZ →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

AD7946BCP

✅ Прямая замена

📦 10-lead LFCSP

Same package, non-lead-free version

📋 Справочный аналог (нет в каталоге)

ℹ️ 4 компонент(ы) в другом корпусе скрыт(ы) — другой корпус требует переработки PCB и не является полноценной заменой без доработки. Свяжитесь с нами если вам нужны предложения по другим корпусам.

AD7946BCPZ Максимальные параметры и электрические характеристики

Разрешение	14-bit
Sample Rate (Warp mode)	500 kSPS
Sample Rate (Normal mode)	450 kSPS
Sample Rate (Impulse mode)	380 kSPS
INL	0.4 LSB typ, 1 LSB max
DNL	0.25 LSB typ, 0.7 LSB max
Диапазон входного напряжения	-0.5 V to 5.8 V
Напряжение питания	5 V
Рабочая температура	-40°C to +85°C
Корпус	10-lead LFCSP (3 mm x 3 mm)
Тип монтажа	Surface Mount
Количество выводов	10
Architecture	SAR (charge redistribution)
Input Type	Pseudo-differential
Интерфейс	SPI-compatible

Конфигурация выводов AD7946BCPZ

Контакт 1	VDD — Power supply, 5V
Контакт 2	GND — Ground
Контакт 3	IN+ — Positive analog input
Контакт 4	IN- — Negative analog input
Контакт 5	REF — Reference input
Контакт 6	SCK — Serial clock input
Контакт 7	SDI — Serial data input
Контакт 8	SDO — Serial data output
Контакт 9	CNV — Convert input
Контакт 10	GND — Ground

Типичное применение

AD7946BCPZ подходит для 6 применениеs: High-Speed Data Acquisition, Industrial Process Control, Medical Instrumentation, Portable Battery-Powered Devices, Test and Measurement Equipment, Communication Systems.

🔧

High-Speed Data Acquisition

The AD7946BCPZ's 500 kSPS sample rate and 14-bit resolution make it ideal for high-speed data acquisition systems. Its low power consumption and small package enable compact designs. The SPI interface simplifies connection to microcontrollers, and the pseudo-differential input reduces common-mode noise, ensuring accurate signal capture in industrial and test equipment.

Рекомендуется

🏭

Industrial Process Control

In industrial process control, the AD7946BCPZ provides accurate, high-speed conversion of sensor signals. Its 14-bit resolution and low INL ensure precise monitoring of temperature, pressure, and flow. The device operates over -40°C to +85°C, suitable for harsh environments. The SPI interface allows easy integration with PLCs and industrial microcontrollers, and the small LFCSP package saves board space.

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💊

Medical Instrumentation

The AD7946BCPZ is well-suited for medical instrumentation such as patient monitoring and diagnostic equipment. Its low power consumption extends battery life in portable devices, while the 14-bit resolution provides accurate readings. The small package enables miniaturization of medical devices. The device's low noise performance allows the use of simpler front-end amplifiers, reducing system cost and complexity.

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📱

Portable Battery-Powered Devices

For portable devices, the AD7946BCPZ offers multiple power-down modes (Warp, Normal, Impulse) to optimize power consumption. Its low power dissipation extends battery life, and the 3x3 mm LFCSP package is ideal for compact designs. The SPI interface is compatible with low-power microcontrollers, and the device operates from a single 5 V supply, simplifying power management.

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🔧

Test and Measurement Equipment

The AD7946BCPZ is used in test and measurement equipment such as digital multimeters and data loggers. Its high sample rate and 14-bit resolution enable accurate waveform capture. The device's low INL and DNL ensure linearity, and the SPI interface allows fast data transfer to processors. The small package and industrial temperature range make it suitable for benchtop and portable instruments.

Рекомендуется

AD797ARZ (Ultra-low noise op-amp for signal conditioning) AD7606BSTZ · Analog Devices AD7606BSTZ · Analog Devices

🌐

Communication Systems

In communication systems, the AD7946BCPZ can be used for baseband signal digitization in software-defined radios and receivers. Its 500 kSPS sample rate is sufficient for narrowband signals, and the 14-bit resolution provides good dynamic range. The device's low power consumption is beneficial for portable communication devices. The SPI interface enables easy integration with DSPs and FPGAs.

Рекомендуется

AD9361BBCZ · Analog Devices AD9680 · Analog Devices

Сводка рекомендуемых товаров

What is the AD7946BCPZ?

The AD7946BCPZ is a 14-bit, 500 kSPS PulSAR ADC from Analog Devices. It operates from a single 5 V supply and features a charge redistribution SAR architecture. According to the AD7946 datasheet, it offers no missing codes and low INL/DNL, making it suitable for high-speed data acquisition.

What is the maximum sample rate of AD7946BCPZ?

The AD7946BCPZ achieves a maximum sample rate of 500 kSPS in Warp mode. In Normal mode, it operates at 450 kSPS, and in Impulse mode at 380 kSPS. These modes allow trade-offs between speed and power consumption.

What is the resolution of AD7946BCPZ?

The AD7946BCPZ has a resolution of 14 bits. It guarantees no missing codes, ensuring monotonicity. The INL is 0.4 LSB typical and 1 LSB maximum, while DNL is 0.25 LSB typical and 0.7 LSB maximum.

What is the supply voltage range for AD7946BCPZ?

The AD7946BCPZ operates from a single 5 V power supply (VDD). The input voltage range is -0.5 V to 5.8 V, allowing pseudo-differential inputs. Ensure the supply is well decoupled to maintain performance.

What is the package type of AD7946BCPZ?

The AD7946BCPZ comes in a 10-lead LFCSP package measuring 3 mm x 3 mm. This compact surface-mount package is suitable for space-constrained designs and offers good thermal performance.

What is the operating temperature range of AD7946BCPZ?

The AD7946BCPZ operates over an industrial temperature range of -40°C to +85°C. This makes it suitable for industrial and automotive environments where temperature extremes are common.

What is the difference between AD7946BCPZ and AD7946BRMZ?

The AD7946BCPZ is in a 10-lead LFCSP package, while the AD7946BRMZ is in a 10-lead MSOP package. Both have the same electrical specifications, but the package differs, affecting PCB footprint and thermal characteristics. The BCPZ is smaller (3x3 mm) compared to MSOP.

Can AD7946BCPZ be used in battery-powered applications?

Yes, the AD7946BCPZ is suitable for battery-powered applications due to its low power consumption and multiple power-down modes (Warp, Normal, Impulse). These modes allow designers to optimize power versus speed, extending battery life.

What is the input voltage range of AD7946BCPZ?

The AD7946BCPZ accepts analog inputs from -0.5 V to 5.8 V. This pseudo-differential input range allows flexibility in signal conditioning. The device includes an internal 1-pole low-pass filter to reduce noise.

What is the INL of AD7946BCPZ?

The integral nonlinearity (INL) of the AD7946BCPZ is 0.4 LSB typical and 1 LSB maximum. This ensures high accuracy for precision measurement applications. The DNL is 0.25 LSB typical and 0.7 LSB maximum.

What is the price of AD7946BCPZ?

As of 2026-08-22, the 1ku list price for the AD7946BCPZ starts from $13.26. Prices may vary by distributor and quantity. Check with authorized distributors like DigiKey or Mouser for current pricing and availability.

Where can I buy AD7946BCPZ?

The AD7946BCPZ is available from authorized distributors such as DigiKey, Mouser, and Arrow. It is also listed on Jotrin Electronics and Chipdigger. Ensure you purchase from authorized sources to guarantee authenticity and warranty.

What is the lead time for AD7946BCPZ?

Lead time for AD7946BCPZ varies by distributor and stock levels. As of 2026-08-22, some distributors may have stock, while others may have lead times of several weeks. Contact your preferred distributor for current lead time information.

Is AD7946BCPZ in stock?

Stock availability for AD7946BCPZ changes frequently. As of 2026-08-22, some distributors like Jotrin and Censtry indicate stock, but it's best to check real-time inventory on DigiKey or Mouser for accurate availability.

What is the best drop-in replacement for AD7946BCPZ?

The AD7946BRMZ is a drop-in replacement for AD7946BCPZ, offering identical electrical specifications but in an MSOP package. For a cross-brand alternative, the TI ADS7946 is a 14-bit, 2 MSPS dual-channel SAR ADC, but it has a different pinout and package, so it is not pin-compatible.

Справочные инженерные данные для AD7946BCPZ — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the AD7946BCPZ when you need a compact, high-speed 14-bit ADC with low power consumption. It is ideal for portable and space-constrained designs. If you prefer an MSOP package, the AD7946BRMZ is electrically identical. For higher speed (2 MSPS) and dual-channel, consider the TI ADS7946, but note it has a different pinout and package, requiring PCB redesign. For lower speed but lower cost, the AD7942BRMZ is an option. Always verify pin compatibility before substitution.

Сравнение с аналогами

Параметр	Этот товар	AD7946BRMZ	AD7946BCP	ADS7946
Package	10-lead LFCSP (3x3 mm)	10-lead MSOP	10-lead LFCSP (3x3 mm)	10-lead MSOP
Brand	Analog Devices	Analog Devices	Analog Devices	Texas Instruments
Resolution	14-bit	14-bit	14-bit	14-bit
Sample Rate	500 kSPS	500 kSPS	500 kSPS	2 MSPS
Input Voltage Range	-0.5 V to 5.8 V	-0.5 V to 5.8 V	-0.5 V to 5.8 V	0 V to 5 V
Supply Voltage	5 V	5 V	5 V	2.7 V to 5.5 V
INL	0.4 LSB typ	0.4 LSB typ	0.4 LSB typ	1 LSB max
Interface	SPI	SPI	SPI	SPI

Ключевые отличия

Higher sample rate than AD7942 (против AD7942BRMZ)
Smaller package than AD7946BRMZ (против AD7946BRMZ)
Lower power consumption than ADS7946 (против ADS7946)

Заметки по проектированию

Decouple the VDD pin with a 10 µF and 0.1 µF capacitor placed as close as possible to the pin. The AD7946 operates from a single 5 V supply; ensure the supply is clean and stable to maintain ADC accuracy. Refer to the datasheet's power supply recommendations.

For optimal performance, use a solid ground plane and minimize trace lengths on the analog input. The pseudo-differential input should be routed with care to avoid noise pickup. Place the ADC close to the signal source to reduce parasitic capacitance.

Avoid driving the analog input beyond the specified -0.5 V to 5.8 V range, as this can damage the device. Use an external buffer amplifier if the source impedance is high. Also, ensure the reference input is properly decoupled to avoid reference noise affecting conversion accuracy.