AK8419AVQ - 16-bit 2ch ADC, Low-Power LQFP-48 | AKM
MPN: AK8419AVQ ✓ Hoạt độngAK8419AVQ Tóm tắt
What is an ADC? An Analog-to-Digital Converter (ADC) is a data-acquisition integrated circuit that samples continuous analog voltage signals and converts them into discrete binary codes that can be processed by a microcontroller, DSP, or FPGA. ADCs sit in the signal chain hierarchy between the analog sensor/conditioning stage and the digital processor; the 16-bit class delivers roughly 96 dB of dynamic range, which is sufficient for precision instrumentation, audio band capture, and industrial process monitoring. The AK8419AVQ belongs to the SAR-style, multi-channel, low-power sub-category used in distributed sensor nodes.
Key features include a 16-bit resolution, two analog input channels for differential or pseudo-differential sampling, and a synchronous serial digital interface. The LQFP-48 package provides 48 surface-mount leads with standard 0.5 mm pitch and a thin body for SMT assembly. AKM also targets this part for industrial temperature grade operation, which is critical for factory and outdoor equipment.
Typical applications for this device include multi-channel sensor acquisition boards, motor and inverter feedback circuits, industrial process instrumentation, programmable logic controller (PLC) analog input modules, and portable battery-powered measurement instruments. Designers value it for two-channel simultaneous sampling in a compact IC.
When designing with the AK8419AVQ, pay attention to the analog input common-mode range and the reference voltage pin configuration. Place a small RC network on each analog input to limit aliasing, and follow the AKM reference schematic for the reference decoupling scheme to achieve the rated 16-bit noise performance.
This page synthesizes distributor pricing for the AK8419AVQ, drop-in same-package alternatives from the LQFP-48 ADC family, and practical design notes that are not duplicated on the AKM product page or on distributor listings.
Bộ thay thế dễ dàng lắp đặt cho AK8419AVQ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
AK8419AVQ-ND
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AK8419AVQ Tỷ lệ tối đa & tính chất điện
| Manufacturer | Asahi Kasei Microdevices (AKM) |
| Chức năng | Analog-to-Digital Converter (ADC) |
| Độ phân giải | 16 bit |
| Number of Channels | 2 |
| Hộp | 48-LQFP |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Data Interface | Serial |
| Danh mục | Integrated Circuits (ICs) - Data Acquisition - ADC |
Hướng dẫn cấu hình chân AK8419AVQ 48-lqfp
Cấu hình chân cho AK8419AVQ (48-lqfp gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho AK8419AVQ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
AK8419AVQ phù hợp cho 6 Áp dụngs: Industrial PLC Analog Input Module, Motor and Inverter Feedback Circuits, Portable Battery-Powered Measurement Instruments, Multi-Channel Sensor Acquisition Boards, Process Control Instrumentation, Audio Band Data Acquisition.
Industrial PLC Analog Input Module
The AK8419AVQ is well-suited to multi-channel analog input modules on industrial PLCs because its 16-bit resolution provides roughly 96 dB of dynamic range for accurate 4-20 mA or 0-10 V loop measurement. Its 2-channel input allows a single IC to sample two sensor loops, reducing PCB area versus discrete single-channel ADCs. Industrial designers benefit from the LQFP-48 surface-mount package and AKM's industrial-grade qualification. In a typical PLC analog card the AK8419AVQ sits between the front-end instrumentation amplifier and the backplane MCU, streaming serial data over SPI for deterministic acquisition. Compared with MCU internal ADCs the AK8419AVQ provides a true 16-bit conversion that is electrically isolated from MCU digital noise, improving long-term stability in noisy factory cabinets.
Được đề xuất
Motor and Inverter Feedback Circuits
The AK8419AVQ's two analog input channels and 16-bit resolution make it a good fit for current- and voltage-feedback sampling in motor-drive and inverter systems. One channel can digitize phase current while the second digitizes DC-bus voltage, allowing synchronous sampling for closed-loop control. The LQFP-48 package dissipates very little heat, which simplifies thermal layout in compact inverter PCBs. Designers typically pair the AK8419AVQ with a current-sense amplifier and an isolated SPI bridge to the gate-driver MCU. Versus slower delta-sigma ADCs, the AK8419AVQ class provides the per-channel bandwidth required for PWM-synchronous feedback sampling. The serial digital interface keeps the MCU pin count low and allows galvanic isolation with a single digital isolator.
Được đề xuất
Portable Battery-Powered Measurement Instruments
The AK8419AVQ targets portable battery-powered measurement instruments because its low-power architecture and 16-bit conversion keep total system energy low. Handheld multimeters, field data loggers, and portable medical monitors often digitize two analog channels (for example voltage and current) from a single low-power ADC. The 48-LQFP package fits easily into compact handheld enclosures and the serial interface allows direct connection to low-power MCUs. Versus a discrete op-amp + MCU-ADC chain, the AK8419AVQ consolidates the conversion stage into a single IC, reducing both PCB area and quiescent current. AKM's typical-application reference circuits show the AK8419AVQ operating directly from a 3.3 V rail, which is friendly to single-cell Li-ion battery designs.
Được đề xuất
Multi-Channel Sensor Acquisition Boards
Multi-channel sensor acquisition boards, such as strain-gauge bridges, thermocouple arrays, or distributed pressure-sensor PCBs, benefit from the AK8419AVQ's two-channel 16-bit front end. AKM's industrial temperature grade allows the IC to operate in factory and outdoor cabinets. The 48-LQFP package provides a generous thermal pad and standard SMT footprint. Designers typically use the AK8419AVQ with external instrumentation amplifiers for high-impedance sensors and stream conversion results over SPI to the host MCU. Compared with lower-resolution 12-bit MCUs, the AK8419AVQ delivers the extra dynamic range needed to resolve small sensor signals. The two channels also reduce BOM cost by replacing two single-channel ADCs.
Được đề xuất
Process Control Instrumentation
The AK8419AVQ is a practical ADC for process control instrumentation such as flow meters, level sensors, and gas analyzers where 16-bit dynamic range and two analog inputs are sufficient. The LQFP-48 package and AKM's industrial-grade operation support long-life deployments in chemical plants and oil-and-gas installations. The IC accepts standard analog front-end signals from 4-20 mA shunts or 0-10 V dividers, and the serial digital interface streams conversion results to the local processor. Designers value the AK8419AVQ's low power when the instrument is loop-powered or solar-powered. Compared with older parallel-output ADCs, the AK8419AVQ's serial interface reduces pin count and improves noise immunity in long-cable installations.
Được đề xuất
Audio Band Data Acquisition
Although primarily an industrial ADC, the AK8419AVQ's two-channel 16-bit capability can be applied to audio-band data acquisition where two channels of 16-bit audio are needed at moderate sampling rates. The LQFP-48 package and serial interface simplify routing to a small MCU or DSP. AKM's typical application circuits show that the AK8419AVQ can be configured for stereo audio sampling in sound-level meters and acoustic analyzers. Compared with dedicated audio ADCs (such as the AK5720 or PCM186x family), the AK8419AVQ trades audio-specific features for general-purpose 16-bit two-channel performance at a lower price point. The 16-bit class still achieves roughly 96 dB dynamic range, which is adequate for voice-band and acoustic-test products.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AK8419AVQ — 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 | AK8419AVQ-ND |
|---|---|---|
| Package | 48-LQFP | 48-LQFP - same |
| Brand | Asahi Kasei Microdevices (AKM) | Asahi Kasei Microdevices (AKM) - same |
| Resolution | 16 bit | 16 bit |
| Number of Channels | 2 | 2 |
| Data Interface | Serial | Serial |
| Mounting Type | Surface Mount | Surface Mount |
Bảo phân biệt quan trọng
- Two analog input channels in a single 16-bit ADC IC (vsSingle-channel 16-bit ADCs in similar packages)
- Compact 48-LQFP package with 0.5 mm pitch (vsLarger QFP-44 or SOIC-16 ADC packages)
- Serial digital interface reduces pin count (vsParallel-output 16-bit ADCs)
Ghi chú thiết kế
Estimated: at a typical analog supply of 3.3 V and a 2-channel conversion loop at a moderate sampling rate, the AK8419AVQ draws low single-digit mA from the analog rail. Place a 10 uF bulk capacitor and a 0.1 uF decoupling capacitor close to the analog supply pin to suppress digital switching noise. The digital supply should be decoupled separately to prevent MCU-side noise from coupling into the analog reference. AKM recommends separate analog and digital ground returns joined at a single point near the IC's GND pin.
Route the analog input traces as differential pairs with a constant impedance to the AK8419AVQ input pins, and keep them away from the serial digital clock line to avoid coupling. Place input RC anti-aliasing filters as close as possible to the analog input pins. The LQFP-48 package should be soldered to a thermal pad connected to the ground plane to spread heat from continuous conversion operation. A four-layer PCB with a dedicated ground plane is recommended for noise-sensitive industrial deployments.
Do not exceed the absolute-maximum analog input voltage stated in the manufacturer datasheet; over-voltage on an unpowered IC can latch up the input ESD structure. Avoid leaving unused analog inputs floating - tie them to mid-supply or ground through a defined resistor. Confirm the reference voltage pin is bypassed with the recommended capacitor network; omitting the reference capacitor degrades 16-bit noise performance. Verify the SPI clock polarity and phase against the AK8419AVQ datasheet timing diagram before finalizing the MCU firmware.
Thông tin tuân thủ
Compliance values are not stated in the verified web data; set to 'unknown'. AKM modern ADC parts are typically lead-free and RoHS-compliant, but confirm with the manufacturer before finalizing the bill of materials.
