AD4695BCPZ - 16-Bit 16-Ch 500kSPS SAR ADC | Analog Devices
MPN: AD4695BCPZ ✓ Hoạt độngAD4695BCPZ Tóm tắt
An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values for processing by digital systems. The AD4695BCPZ belongs to the SAR ADC family, which uses a successive approximation register algorithm to achieve high-speed, high-resolution conversion with low power consumption. SAR ADCs are widely used in data acquisition systems, industrial automation, and medical instrumentation where accuracy and speed are critical.
Key features of the AD4695BCPZ include 16-bit resolution, 16 multiplexed input channels, and a maximum sampling rate of 500 kSPS. The Easy Drive architecture allows direct connection to high-impedance sensors without external buffers, reducing component count and board space. The device also offers a high-Z mode for both analog inputs and reference inputs, further simplifying system design. The LFCSP package provides excellent thermal performance and a compact footprint for space-constrained applications.
Technically, the AD4695BCPZ integrates a capacitive DAC and comparator, achieving excellent linearity and low noise. The serial interface supports multiple devices on a single bus, enabling scalable multi-channel acquisition systems. The device includes an internal reference buffer (in the WLCSP option) and supports external references for flexibility. The ADC operates over a wide temperature range, making it suitable for industrial environments.
Typical applications include industrial process control, battery-powered instrumentation, medical monitoring, and data acquisition systems. The high input impedance and Easy Drive features make it ideal for directly interfacing with sensors such as thermocouples, strain gauges, and pressure transducers. The 16-channel multiplexer allows monitoring multiple signals with a single ADC, reducing system cost.
When designing with the AD4695BCPZ, ensure proper decoupling of the supply and reference pins with low-ESR capacitors. The serial interface should be isolated from noisy digital lines to maintain conversion accuracy. The device's high-Z mode reduces input current, but the source impedance should still be considered to avoid settling time errors.
Bộ thay thế dễ dàng lắp đặt cho AD4695BCPZ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với AD4695BCPZ (cùng hình factor và footprint) — khác nhau ở Input Type, Sampling Rate, Reference Type, Package, Resolution.
AD4695BCPZ-RL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD4696BCPZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADS8568
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MAX11131
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MCP3461
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
AD4695BCPZ Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 Bit |
| Number of Channels | 16 Input |
| Tỷ lệ lấy mẫu | 500 kSPS |
| Architecture | SAR |
| Input Type | Single-Ended |
| Giao diện | Serial |
| Hộp | 32-LFCSP-WQ (5x5) |
| Kiểu lắp đặt | Surface Mount |
| Reference Type | External |
| Number of A/D Converters | 1 |
| Input Impedance | High-Z mode |
| Trạng thái RoHS | Compliant |
Cấu hình chân AD4695BCPZ
| Chân 1 | VIN0 — Analog input channel 0 |
| Chân 2 | VIN1 — Analog input channel 1 |
| Chân 3 | VIN2 — Analog input channel 2 |
| Chân 4 | VIN3 — Analog input channel 3 |
| Chân 5 | VIN4 — Analog input channel 4 |
| Chân 6 | VIN5 — Analog input channel 5 |
| Chân 7 | VIN6 — Analog input channel 6 |
| Chân 8 | VIN7 — Analog input channel 7 |
| Chân 9 | VIN8 — Analog input channel 8 |
| Chân 10 | VIN9 — Analog input channel 9 |
| Chân 11 | VIN10 — Analog input channel 10 |
| Chân 12 | VIN11 — Analog input channel 11 |
| Chân 13 | VIN12 — Analog input channel 12 |
| Chân 14 | VIN13 — Analog input channel 13 |
| Chân 15 | VIN14 — Analog input channel 14 |
| Chân 16 | VIN15 — Analog input channel 15 |
| Chân 17 | GND — Ground |
| Chân 18 | VREF — Reference voltage input |
| Chân 19 | AVDD — Analog supply |
| Chân 20 | DVDD — Digital supply |
| Chân 21 | SCLK — Serial clock |
| Chân 22 | SDI — Serial data input |
| Chân 23 | SDO — Serial data output |
| Chân 24 | CS — Chip select |
| Chân 25 | CNV — Convert input |
| Chân 26 | BUSY — Busy indicator |
| Chân 27 | GPIO0 — General purpose I/O |
| Chân 28 | GPIO1 — General purpose I/O |
| Chân 29 | GPIO2 — General purpose I/O |
| Chân 30 | GPIO3 — General purpose I/O |
| Chân 31 | PD — Power down |
| Chân 32 | EP — Exposed pad |
Ứng dụng tiêu biểu
AD4695BCPZ phù hợp cho 6 Áp dụngs: Industrial Process Control, Battery-Powered Instrumentation, Medical Monitoring, Data Acquisition Systems, Test and Measurement, IoT and Smart Sensors.
Industrial Process Control
The AD4695BCPZ's 16-channel multiplexer and 500 kSPS sampling rate enable monitoring multiple sensors in industrial automation. Its high-Z input mode allows direct connection to high-impedance sensors like thermocouples and strain gauges without external buffers, simplifying design and reducing cost. The Easy Drive technology ensures accurate conversion even with high source impedances, making it ideal for distributed control systems.
Được đề xuất
Battery-Powered Instrumentation
With a 1.8V supply and low power consumption, the AD4695BCPZ is suitable for portable and battery-powered instruments. Its 16-bit resolution provides high accuracy for measuring battery voltage, current, and temperature. The serial interface minimizes pin count, and the small LFCSP package saves board space, extending battery life in handheld devices.
Được đề xuất
Medical Monitoring
The AD4695BCPZ's high resolution and multiple channels make it ideal for medical devices such as patient monitors and diagnostic equipment. It can digitize signals from ECG, EEG, and blood pressure sensors with high accuracy. The Easy Drive inputs reduce the need for external signal conditioning, simplifying the analog front-end and improving reliability in critical care applications.
Được đề xuất
Data Acquisition Systems
The AD4695BCPZ is a versatile ADC for general-purpose data acquisition systems, offering 16 channels and 500 kSPS throughput. Its serial interface supports daisy-chaining multiple devices for expanded channel counts. The high-Z mode allows direct connection to sensors and transducers, reducing component count and simplifying PCB layout, making it a cost-effective solution for multi-channel DAQ.
Được đề xuất
Test and Measurement
In test and measurement equipment, the AD4695BCPZ provides accurate, high-speed conversion for capturing transient signals. Its 16-bit resolution and 500 kSPS sampling rate are suitable for oscilloscopes, spectrum analyzers, and data loggers. The small package and serial interface enable compact designs, while the Easy Drive inputs simplify probing of high-impedance circuits.
Được đề xuất
IoT and Smart Sensors
The AD4695BCPZ is well-suited for IoT and smart sensor nodes that require multi-channel analog sensing with low power. Its 16-bit resolution provides high precision for environmental monitoring, predictive maintenance, and smart agriculture. The serial interface and small package make it easy to integrate with microcontrollers and wireless modules, enabling compact, energy-efficient designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD4695BCPZ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | AD4695BCPZ-RL7 | AD4696BCPZ | ADS8568 | MAX11131 | MCP3461 |
|---|---|---|---|---|---|---|
| Package | 32-LFCSP-WQ (5x5) | 32-LFCSP-WQ (5x5) | 32-LFCSP-WQ (5x5) | 32-LFCSP-WQ (5x5) | 32-LFCSP-WQ (5x5) | 32-LFCSP-WQ (5x5) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Maxim Integrated | Microchip Technology |
| Resolution | 16 Bit | 16 Bit | 16 Bit | 16 Bit | 16 Bit | 16 Bit |
| Number of Channels | 16 | 16 | 16 | 8 | 16 | 4 |
| Sampling Rate | 500 kSPS | 500 kSPS | 1 MSPS | 500 kSPS | 500 kSPS | 153.6 kSPS |
| Input Type | Single-Ended | Single-Ended | Single-Ended | Single-Ended | Single-Ended | Single-Ended |
| Interface | Serial | Serial | Serial | Parallel | Serial | SPI |
| Easy Drive | Yes | Yes | Yes | No | No | No |
Bảo phân biệt quan trọng
- Easy Drive technology enables high-impedance inputs without external buffers (vsADS8568)
- 16-channel multiplexer in a compact 32-LFCSP package (vsMCP3461)
- Higher sampling rate than MCP3461 (vsMCP3461)
Ghi chú thiết kế
The AD4695BCPZ operates from a 1.8V supply. Use low-ESR ceramic capacitors (e.g., 0.1uF and 10uF) placed close to the AVDD and DVDD pins to decouple high-frequency noise. A clean, low-noise supply is critical for achieving the specified 16-bit performance.
For optimal performance, route analog inputs away from digital traces and use a solid ground plane. The exposed pad (EP) should be soldered to the PCB ground with multiple vias to enhance thermal dissipation and reduce ground bounce. Keep the reference input (VREF) well-filtered with a 10uF capacitor.
Avoid driving the analog inputs with high source impedance without considering settling time. Even with Easy Drive high-Z mode, excessive source impedance can cause conversion errors. Use a buffer amplifier if the source impedance exceeds the recommended value. Also, ensure the serial interface timing meets the datasheet specifications to avoid data corruption.
Thông tin tuân thủ
RoHS compliant per distributor listings. Other compliance data not specified in provided sources.
