AD7988-1BCPZ - 16-Bit 100kSPS SAR ADC | Analog Devices
MPN: AD7988-1BCPZ ✓ نشطAD7988-1BCPZ نظرة عامة
An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD7988-1 is a SAR ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power consumption, and ease of use. They are widely used in data acquisition systems, industrial process control, and medical instrumentation. The AD7988-1 is part of the PulSAR family of ADCs from Analog Devices, which are recognized for their high performance and low power.
Key features of the AD7988-1BCPZ include 16-bit resolution, 100 kSPS sampling rate, and low power consumption. It operates from a single 2.375V to 5.5V supply, and the separate VIO supply allows interface with 1.8V, 2.5V, 3V, or 5V logic. The device also features a daisy-chain capability using the SDI input, enabling multiple ADCs to be connected on a single 3-wire bus. The LFCSP package provides excellent thermal performance and a small footprint.
The AD7988-1 uses a capacitive DAC architecture with a precision comparator, achieving high accuracy and low noise. The device includes an internal reference buffer and supports both external and internal reference options. The SPI-compatible serial interface simplifies connection to microcontrollers and DSPs. The device is specified for operation from -40°C to +125°C, making it suitable for industrial and automotive environments.
Typical applications include battery-powered instruments, portable medical devices, data acquisition systems, and industrial process control. The low power consumption and small package make it ideal for portable and space-constrained designs. The high resolution and accuracy ensure reliable performance in precision measurement applications.
When designing with the AD7988-1, ensure proper decoupling of the VDD and VIO supplies with 0.1uF and 10uF capacitors. The reference input should be bypassed with a 10uF capacitor to maintain stability. The SCLK frequency should be within the specified range to ensure accurate conversion.
بدائل مباشرة لـ AD7988-1BCPZ — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع AD7988-1BCPZ (نفس عامل الشكل والبصمة) — يختلف في Interface, Package, Sampling Rate, Resolution, Architecture.
AD7988-5BCPZ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD7988-1BCPZ-RL7
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7988-1BCPZ-RL
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7980BCPZ-RL7
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←AD7988-1BCPZ الحدود القصوى والخصائص الكهربائية
| الدقة | 16 Bit |
| معدل أخذ العينات | 100 kSPS |
| Number of Inputs | 1 |
| Input Type | Single-Ended |
| الواجهة | SPI |
| Supply Voltage Range | 2.375 V to 5.5 V |
| Logic Supply Voltage (VIO) | 1.8 V to 5.5 V |
| العلبة | 10-LFCSP-WD (3x3 mm) |
| نطاق درجة حرارة التشغيل | -40°C to +125°C |
| Daisy-Chain Support | Yes |
| حالة RoHS | Compliant |
| نوع التركيب | Surface Mount |
تكوين أطراف AD7988-1BCPZ
| دبوس 1 | VDD — Power supply input |
| دبوس 2 | GND — Ground |
| دبوس 3 | IN — Analog input |
| دبوس 4 | REF — Reference input |
| دبوس 5 | VIO — Logic supply |
| دبوس 6 | SDI — Serial data input (daisy-chain) |
| دبوس 7 | SCLK — Serial clock |
| دبوس 8 | SDO — Serial data output |
| دبوس 9 | CNV — Convert input |
| دبوس 10 | GND — Ground (exposed pad) |
التطبيقات النموذجية
AD7988-1BCPZ مناسب لـ 6 التطبيقs: Battery-Powered Instruments, Data Acquisition Systems, Portable Medical Devices, Industrial Process Control, Test and Measurement Equipment, IoT and Smart Sensors.
Battery-Powered Instruments
The AD7988-1BCPZ's low power consumption and small LFCSP package make it ideal for battery-powered instruments such as handheld multimeters and portable data loggers. Its 16-bit resolution ensures accurate measurements, while the 100 kSPS sampling rate is sufficient for most sensor signals. The SPI interface simplifies connection to low-power microcontrollers, and the wide supply range allows direct operation from a 3.3V or 5V battery. The device's low power dissipation extends battery life, making it a preferred choice for portable applications.
موصى به
Data Acquisition Systems
In data acquisition systems, the AD7988-1BCPZ provides high-resolution conversion of analog signals from sensors and transducers. Its 16-bit resolution and 100 kSPS sampling rate are well-suited for industrial process control and test equipment. The SPI interface allows easy integration with DSPs and FPGAs, and the daisy-chain feature enables multiple ADCs to share a single bus, reducing wiring complexity. The device's wide operating temperature range (-40°C to +125°C) ensures reliable operation in harsh environments.
موصى به
Portable Medical Devices
The AD7988-1BCPZ is suitable for portable medical devices such as glucose monitors and patient vital sign monitors. Its low power consumption is critical for battery-operated devices, and the 16-bit resolution provides the precision needed for medical measurements. The small LFCSP package saves board space, and the SPI interface connects easily to medical-grade microcontrollers. The device's wide supply range accommodates various battery chemistries, and its temperature range covers clinical environments.
موصى به
Industrial Process Control
In industrial process control, the AD7988-1BCPZ converts analog signals from temperature, pressure, and flow sensors into digital data for monitoring and control. Its 16-bit resolution ensures high accuracy, and the 100 kSPS sampling rate is adequate for most process variables. The device's robust operating temperature range and SPI interface make it easy to integrate into PLCs and industrial controllers. The daisy-chain capability allows multiple channels to be read with minimal I/O pins, simplifying system design.
موصى به
Test and Measurement Equipment
The AD7988-1BCPZ is used in test and measurement equipment such as digital multimeters and spectrum analyzers. Its high resolution and sampling rate enable accurate measurement of AC and DC signals. The SPI interface allows fast data transfer to the host processor, and the small package is ideal for compact benchtop instruments. The device's low power consumption reduces heat generation, improving measurement stability. The wide supply range supports various power architectures.
موصى به
IoT and Smart Sensors
The AD7988-1BCPZ is well-suited for IoT and smart sensor nodes that require low power and high resolution. Its 16-bit resolution captures fine details from environmental sensors, and the 100 kSPS sampling rate is sufficient for most IoT applications. The SPI interface connects to low-power wireless MCUs, and the small LFCSP package fits into compact sensor modules. The device's low power consumption is essential for battery-powered IoT devices, and its wide supply range allows operation from energy harvesting sources.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ AD7988-1BCPZ — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | AD7988-5BCPZ | AD7980BCPZ-RL7 | AD7690BRMZ |
|---|---|---|---|---|
| Package | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 Bit | 16 Bit | 16 Bit | 16 Bit |
| Sampling Rate | 100 kSPS | 500 kSPS | 1 MSPS | 400 kSPS |
| Input Type | Single-Ended | Single-Ended | Single-Ended | Single-Ended |
| Interface | SPI | SPI | SPI | SPI |
| Supply Voltage Range | 2.375V to 5.5V | 2.375V to 5.5V | 2.375V to 5.5V | 2.3V to 5.5V |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
أبرز الفروقات
- Lower power consumption compared to AD7988-5 (مقابلAD7988-5BCPZ)
- Pin-compatible with higher-speed AD7988-5 (مقابلAD7988-5BCPZ)
- Smaller package than AD7690 (مقابلAD7690BRMZ)
ملاحظات التصميم
Decouple the VDD and VIO supplies with 0.1uF and 10uF capacitors placed close to the pins. The reference input should be bypassed with a 10uF capacitor to ensure stability. Use a low-noise LDO for the analog supply to minimize noise coupling into the ADC.
Keep the analog input trace short and shielded to reduce noise pickup. Use a ground plane under the ADC and avoid routing digital signals near the analog input. The exposed pad should be soldered to the ground plane for thermal and electrical performance.
Ensure the SCLK frequency does not exceed the maximum specified in the datasheet to avoid conversion errors. The CNV pin must be held low during conversion. Also, verify that the reference voltage is within the specified range to maintain accuracy.
معلومات الامتثال
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.