AD7683BCPZ - 16-Bit 250kSPS PulSAR ADC | Analog Devices
MPN： AD7683BCPZ ✓ 啟用中AD7683BCPZ 概覽
An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers. The AD7683 is a successive approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and excellent accuracy, making them ideal for applications such as industrial process control, medical instrumentation, and portable battery-powered devices. The AD7683 belongs to the PulSAR family of ADCs, which are renowned for their high performance and ease of use.
Key features of the AD7683BCPZ include 16-bit resolution with no missing codes, a maximum sampling rate of 250 kSPS, and a typical power dissipation of only 12.5 mW at 5 V. The device offers a pseudo-differential analog input, an SPI-compatible serial interface, and a reference input that can be driven by an external reference. The AD7683 also includes a busy indicator and a power-down mode to conserve energy during idle periods.
The AD7683 uses a charge redistribution architecture with an internal conversion clock, eliminating the need for an external clock. The track-and-hold circuit has a short aperture delay, ensuring accurate sampling of high-frequency signals. The device operates over the industrial temperature range of -40°C to +85°C and is available in a lead-free, RoHS-compliant package.
Typical applications for the AD7683BCPZ include battery-powered instruments, data acquisition systems, industrial process control, medical devices, and portable electronics. Its low power consumption and small package make it suitable for space-constrained designs. The SPI-compatible interface simplifies connection to microcontrollers and DSPs.
When designing with the AD7683, ensure that the reference voltage is stable and noise-free, as it directly affects conversion accuracy. Use a low-pass filter on the analog input to remove high-frequency noise, and place decoupling capacitors close to the VDD and REF pins. The device's power-down mode can be used to reduce power consumption between conversions.
直接替換替代品，適用於 AD7683BCPZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD7683BCPZ （相同外形與佔位） — 差異在於 Architecture, Data Interface, Operating Temperature Range, Package, Sampling Rate.
AD7683BCPZRL7
✅ 直接替換📋 參考替代品（不在目錄中）
AD7683BCPZ 最大額定值與電氣特性
| 解析度 | 16 bit |
| 取樣率 | 250 kSPS |
| Number of Input Channels | 1 |
| Input Type | Pseudo-Differential |
| Data Interface | SPI |
| Architecture | SAR |
| 供應電壓 | 2.7 V to 5.5 V |
| 參考電壓 | External, 0.5 V to VDD |
| Power Dissipation | 12.5 mW at 5 V |
| No Missing Codes | Yes (B grade) |
| 工作溫度範圍 | -40°C to +85°C |
| 封裝 | 8-Lead LFCSP (CP-8-2) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Terminal Form | NO LEAD |
| Number of Terminals | 8 |
AD7683BCPZ 腳位配置
| 腳位 1 | IN — Analog input |
| 腳位 2 | GND — Ground |
| 腳位 3 | REF — Reference input |
| 腳位 4 | VDD — Power supply |
| 腳位 5 | SDO — Serial data output |
| 腳位 6 | SCK — Serial clock input |
| 腳位 7 | CS — Chip select |
| 腳位 8 | BUSY — Busy indicator |
典型應用
AD7683BCPZ 適用於 6 應用s: Battery-Powered Instruments, Data Acquisition Systems, Industrial Process Control, Medical Instrumentation, Portable Electronics, Test and Measurement Equipment.
Battery-Powered Instruments
The AD7683BCPZ's low power consumption of 12.5 mW at 5 V and wide supply voltage range of 2.7 V to 5.5 V make it ideal for battery-powered instruments. Its power-down mode further extends battery life by reducing power to micro-watts during idle periods. The small 8-lead LFCSP package fits compact handheld designs, and the SPI interface simplifies connection to low-power microcontrollers. With 16-bit resolution and 250 kSPS sampling, it provides high accuracy for portable data loggers and field instruments.
推薦
Data Acquisition Systems
The AD7683BCPZ is a high-speed, 16-bit SAR ADC with a 250 kSPS sampling rate, making it suitable for data acquisition systems that require accurate and fast conversion. Its pseudo-differential input helps reject common-mode noise, and the SPI interface allows easy integration with DSPs and FPGAs. The device's low power dissipation is beneficial in multi-channel systems where multiple ADCs are used. The internal conversion clock simplifies design by eliminating the need for an external clock source.
推薦
Industrial Process Control
In industrial process control, the AD7683BCPZ provides 16-bit resolution and 250 kSPS sampling, enabling precise monitoring of analog signals such as temperature, pressure, and flow. Its industrial temperature range of -40°C to +85°C ensures reliable operation in harsh environments. The pseudo-differential input reduces noise pickup from industrial wiring, and the SPI interface allows easy connection to industrial microcontrollers. The device's low power consumption is advantageous in remote or loop-powered systems.
推薦
Medical Instrumentation
The AD7683BCPZ is suitable for medical instrumentation such as patient monitors and diagnostic equipment, where high accuracy and low power are critical. Its 16-bit resolution ensures precise measurement of physiological signals, and the 250 kSPS sampling rate captures fast transients. The small package and low power consumption enable portable and wearable medical devices. The SPI interface simplifies integration with medical-grade microcontrollers, and the wide supply voltage range accommodates battery-powered designs.
推薦
Portable Electronics
The AD7683BCPZ is ideal for portable electronics such as handheld meters, data loggers, and consumer devices. Its low power consumption of 12.5 mW at 5 V and power-down mode extend battery life, while the 2.7 V to 5.5 V supply range allows operation from a single lithium-ion cell. The compact 8-lead LFCSP package saves board space, and the SPI interface connects easily to application processors. With 16-bit resolution and 250 kSPS, it delivers high performance for portable measurement applications.
推薦
Test and Measurement Equipment
The AD7683BCPZ is used in test and measurement equipment such as digital multimeters, data loggers, and spectrum analyzers. Its 16-bit resolution and 250 kSPS sampling rate provide accurate and fast measurements. The pseudo-differential input reduces noise, and the SPI interface allows easy integration with FPGAs and DSPs. The device's low power consumption is beneficial in portable test equipment, and the industrial temperature range ensures reliable operation in various environments.
推薦
推薦產品摘要
工程參考資料，適用於 AD7683BCPZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AD7683BCPZRL7 | AD7683BRMZ | AD7682BCPZ |
|---|---|---|---|---|
| Package | 8-Lead LFCSP (CP-8-2) | 8-Lead LFCSP (CP-8-2) - same | 8-Lead MSOP | 20-Lead LFCSP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 250 kSPS | 250 kSPS | 250 kSPS | 250 kSPS |
| Number of Channels | 1 | 1 | 1 | 4 |
| Input Type | Pseudo-Differential | Pseudo-Differential | Pseudo-Differential | Pseudo-Differential |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Power Dissipation | 12.5 mW at 5 V | 12.5 mW at 5 V | 12.5 mW at 5 V | 12.5 mW at 5 V |
主要差異化特點
- Low power consumption (對比AD7682BCPZ)
- Small package (對比AD7683BRMZ)
- Single-channel simplicity (對比AD7682BCPZ)
設計說明
The AD7683BCPZ operates from a single 2.7 V to 5.5 V supply. Use a low-noise LDO regulator to supply VDD, and place a 10 µF and 0.1 µF decoupling capacitor close to the VDD pin. The reference input (REF) should be driven by a low-impedance, low-noise reference source, with a 10 µF capacitor at the REF pin for stability.
For optimal performance, keep the analog input trace short and shielded from digital signals. Use a ground plane under the ADC and avoid routing high-speed digital lines near the analog input. Place the SPI interface lines (SCK, SDO, CS) away from the analog input to minimize crosstalk. The exposed pad on the LFCSP package should be soldered to the ground plane for thermal and electrical performance.
Ensure the reference voltage is stable and noise-free, as it directly affects conversion accuracy. Use a low-pass filter on the analog input to remove high-frequency noise. Avoid exceeding the absolute maximum ratings on the input pins. The power-down mode can be used to reduce power consumption, but ensure the device is fully powered up before starting a conversion.
合規資訊
RoHS compliant per part number suffix 'Z'. Other compliance data not specified in provided sources.
