Analog Devices

AD677KR - 16-Bit 100 kSPS Serial SAR ADC | Analog Devices

Name: AD677KR - 16-Bit 100 kSPS Serial SAR ADC | Analog Devices
Brand: Analog Devices
SKU: AD677KR

MPN: AD677KR ⚠ Lần mua cuối

28-lead SOIC Package

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AD677KR Tóm tắt

The Analog Devices AD677KR is a 16-bit, 100 kSPS sampling analog-to-digital converter with one serial output and a 28-lead SOIC package. It uses a switched-capacitor charge-redistribution architecture, with a total conversion time of 10 microseconds, making it suitable for precision data-acquisition systems requiring accurate conversion at moderate sampling rates. The device also provides autocalibration, an on-chip sample-and-hold function, and no-missing-code operation according to the manufacturer documentation.

A SAR ADC is a successive-approximation analog-to-digital converter. It samples an analog input through a sample-and-hold circuit and then performs a series of internal comparison and bit-resolution steps to produce a digital result. The AD677 belongs to the broader hierarchy of data-converter ICs, analog-to-digital converters, signal-chain semiconductors, and precision measurement devices.

The AD677KR's principal characteristics are 16-bit resolution, a 100 kSPS conversion rate, a 10 microsecond total conversion time, serial output, and a 28-pin SOIC package. Manufacturer materials list 92 dB SINAD, 99 dB THD, and 1 MHz full-power bandwidth. These figures support applications where the converter must preserve low-level information while operating directly from analog sensor or conditioning circuits.

The switched-capacitor and charge-redistribution architecture is digitally corrected for internal nonlinearities. Autocalibration helps reduce offset and gain-related error, while the integrated sample-and-hold function simplifies the input stage. The serial interface reduces the number of data pins required, although system clocking, settling time, digital-interface timing, and analog reference design remain important engineering considerations.

Typical applications include industrial process measurement, instrumentation, sensor signal acquisition, laboratory equipment, and embedded data-collection systems. The AD677 can be used where a 16-bit measurement channel is required but a multiplexing, high-channel-count, or very-high-speed converter would add unnecessary cost and complexity.

For a robust implementation, preserve the analog input bandwidth required by the selected source, decouple the reference and supply rails close to the device, and verify digital timing against the serial-output protocol. Because the AD677 is designated LAST TIME BUY by Analog Devices, long-lived production programs should confirm supply continuity before committing to new designs.

This page consolidates manufacturer lifecycle information, distributor references, verified conversion characteristics, replacement considerations, and practical design guidance. It also distinguishes true same-footprint options from broader SAR ADC alternatives that may require firmware, interface, or PCB changes.

Bộ thay thế dễ dàng lắp đặt cho AD677KR — 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 AD677KR (cùng hình factor và footprint) — khác nhau ở Architecture, Total Harmonic Distortion.

AD677JR

Analog Devices

Architecture: SAR ADC with switched-capacitor charge redistribution

Total Harmonic Distortion: 92 dB

So sánh với AD677KR →

AD677JRZ

✅ Drop-In

📦 28-lead SOIC

Same AD677 16-bit, 100 kSPS architecture and 28-lead SOIC footprint; temperature-grade suffix differs by an amount not stated in the verified excerpts

📋 Tham chiếu thay thế (không có trong danh mục)

AD677JR

✅ Drop-In

Analog Devices

📦 28-lead SOIC

16 bit · 100 kSPS · 10 us · 1 channel · SAR ADC with switched-capacitor charge redistribution · Single-ended analog input · Serial, 16 bit · 99 dB

Liên hệ để biết giá

Xem tài liệu →

AD677KR Tỷ lệ tối đa & tính chất điện

Độ phân giải	16 bit
Tỷ lệ lấy mẫu	100 kSPS
Total Conversion Time	10 us
Architecture	Switched-capacitor/charge-redistribution SAR
Input Count	1 input
Kiểu đầu ra	Serial, 16 bit
Sample-and-Hold	On-chip
Autocalibration	Supported
No Missing Codes	16 bit, no missing codes
Signal-to-Noise and Distortion Ratio	92 dB
Total Harmonic Distortion	99 dB
Full-Power Bandwidth	1 MHz
Hộp	28-lead SOIC
Kiểu lắp đặt	Surface mount
Analog Input Type	Single-ended/unipolar input
Digital Interface	Serial output
Trạng thái RoHS	unknown

Hướng dẫn cấu hình chân AD677KR 28-lead soic

Cấu hình chân cho AD677KR (28-lead soic 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.

Bảng cấu hình chân 28-lead soic cho AD677KR

Không có dữ liệu chân cụ thể sẵn có cho AD677KR.

Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.

Ứng dụng tiêu biểu

AD677KR phù hợp cho 6 Áp dụngs: Industrial Process Measurement, Precision Sensor Signal Acquisition, Laboratory Instrumentation, Data Acquisition Embedded Systems, Communication and Network Monitoring, Test and Measurement Equipment.

🏭

Industrial Process Measurement

The AD677KR fits single-channel industrial process measurement when a sensor conditioner's output must be digitized with 16-bit resolution at up to 100 kSPS. Its 92 dB SINAD, 99 dB THD, and integrated sample-and-hold support accurate capture of process variables such as pressure, temperature, or flow. Place the converter behind a low-noise analog front end, use a stable reference, and decouple supply pins close to the package. The manufacturer's 10 microsecond total conversion time permits 100 kSPS operation, while the 28-lead SOIC simplifies assembly in conventional surface-mount industrial electronics.

Được đề xuất

AD677KRZ (AD677-family 28-lead SOIC ordering option) AD677JRZ (Same-family temperature-grade alternative)

🧩

Precision Sensor Signal Acquisition

The AD677KR is appropriate for acquiring a conditioned precision sensor signal when one analog channel and serial output are sufficient. Its 16-bit no-missing-code characteristic and 92 dB SINAD preserve small signal variations better than a lower-resolution converter, while the on-chip sample-and-hold simplifies acquisition timing. The analog signal path still requires careful reference grounding, input filtering, and protection against transients. At 100 kSPS, use the manufacturer's serial timing data to confirm that the controller clocking and data-capture latency meet the measurement bandwidth.

Được đề xuất

AD677JRZ (Same-family AD677 converter) AD677JR · Analog Devices

🔧

Laboratory Instrumentation

The AD677KR can serve as the measurement converter in laboratory instrumentation requiring a precise single-ended input and moderate acquisition speed. Its 100 kSPS rate and 16-bit resolution balance resolution with system complexity, and the serial interface limits the number of connections required between the ADC and control electronics. For bench equipment, focus on reference stability, low-noise supply design, and avoiding digital return currents beneath the analog input and reference pins. The LAST TIME BUY status should be considered before designing additional instrument models around this converter.

Được đề xuất

AD677KRZ (AD677-family commercial ordering option) AD677JRZ (Same-family 28-pin package alternative)

🖥️

Data Acquisition Embedded Systems

AD677KR is suitable for an embedded data-acquisition channel that must output 16-bit measurement data to a microcontroller, DSP, or FPGA through a serial interface. The 100 kSPS maximum rate is ample for many slow or medium-bandwidth sensors and avoids the cost of a high-speed parallel ADC. Firmware must handle the specified clock and conversion timing, while the hardware must accommodate the device's supply and reference requirements. Because the verified information does not include exact interface logic levels, verify them against the current datasheet rather than inferring compatibility from the serial-output description.

Được đề xuất

AD677JRZ (Same-family drop-in format candidate) AD677JR · Analog Devices

🌐

Communication and Network Monitoring

The AD677KR can monitor a slow-changing analog control, supply, or sensor node within communications equipment when 100 kSPS resolution is adequate. Its 16-bit conversion resolution supports calibration and diagnostic measurements, while the serial output leaves more board area available than a parallel interface. Design the input network to prevent RF pickup and keep the reference away from switching regulators. For network equipment with long product lifetimes, verify supply continuity because the AD677 family is LAST TIME BUY and may not be appropriate for a newly created platform with an extended production forecast.

Được đề xuất

AD677JRZ (Same-family SOIC replacement candidate) AD677KRZ (AD677-family ordering option)

📺

Test and Measurement Equipment

The AD677KR is a practical choice for bench and production test equipment requiring a dedicated 16-bit measurement input rather than a high-channel-count converter. Its 92 dB SINAD, 99 dB THD, and 1 MHz full-power bandwidth provide useful dynamic range for calibrated stimulus-response measurements. A well-controlled reference and quiet analog layout are essential if the full resolution is to be realized. The 100 kSPS sampling rate supports many general-purpose measurements, while specialized high-frequency test systems should use a converter with a substantially higher sample rate.

Được đề xuất

AD677JR · Analog Devices AD677JRZ (AD677-family SOIC alternative)

Tóm tắt các sản phẩm được đề xuất

AD677KRZ AD677-family 28-lead SOIC ordering option Được sử dụng trong: Industrial Process Measurement, Laboratory Instrumentation, Communication and Network Monitoring AD677JRZ Same-family temperature-grade alternative Được sử dụng trong: Industrial Process Measurement, Precision Sensor Signal Acquisition, Laboratory Instrumentation, Data Acquisition Embedded Systems, Communication and Network Monitoring, Test and Measurement Equipment AD677JR Analog Devices Được sử dụng trong: Precision Sensor Signal Acquisition, Data Acquisition Embedded Systems, Test and Measurement Equipment

What is the AD677KR and what are its key specifications?

The AD677KR is a 16-bit, 100 kSPS serial-output SAR analog-to-digital converter in a 28-lead SOIC package. According to the Analog Devices AD677 product page and AD677KR datasheet information, it provides a 10 microsecond total conversion time, switched-capacitor charge-redistribution architecture, on-chip sample-and-hold, autocalibration, and no-missing-code operation. Manufacturer-listed performance includes 92 dB SINAD, 99 dB THD, and 1 MHz full-power bandwidth. It is therefore intended for precision, single-channel data-acquisition systems rather than high-channel-count or ultra-high-speed conversion.

Where can I download the AD677KR datasheet PDF?

The official AD677KR datasheet and product information are available through Analog Devices at https://www.analog.com/en/products/ad677.html. The AD677 family uses a switched-capacitor/charge-redistribution SAR architecture, and the AD677KR is the 28-lead SOIC commercial-temperature ordering option. The datasheet should be consulted for the exact pin names, electrical limits, supply requirements, timing diagrams, reference configuration, and recommended application circuit before the device is used in a new design.

Where can I buy AD677KR online and what is the current price?

AD677KR is listed for sale by DigiKey at https://www.digikey.com/en/products/detail/analog-devices-inc/AD677KR/612157, with additional distributor listings visible through Octopart and BonChip. The supplied verified data confirms a DigiKey listing and states that the part ships today, but it does not provide an exact AD677KR unit price or quantity-break prices as of 2026-10-30. Accordingly, the listed tier prices are placeholders rather than quotations. Request a current XAIPART quote and confirm stock, lot traceability, and shipping terms before ordering.

What is the lead time and stock status for AD677KR?

The verified DigiKey listing for AD677KR says “Buy now, ships today,” indicating that at least one listed distributor channel had availability when the page was retrieved on 2026-10-30. No firm lead-time number or XAIPART inventory quantity was supplied, however, so procurement planning should not assume every quantity tier is immediately available. Because Analog Devices lists the AD677 family as LAST TIME BUY, buyers should request a lot-availability commitment and avoid building a long-term schedule around unconfirmed inventory.

Is AD677KR in stock?

AD677KR was shown as orderable and shipping from DigiKey in the verified product listing retrieved on 2026-10-30. That distributor result supports near-term procurement, but it is not a guarantee of XAIPART stock because no internal inventory record was provided. The Analog Devices product page identifies the AD677 as LAST TIME BUY, so availability may decline even if a distributor currently lists the part. Confirm the exact MPN, quantity, date code, and country of origin when placing an order.

What can replace AD677KR with a drop-in-compatible part?

AD677JRZ is the closest verified drop-in candidate for AD677KR because it belongs to the same AD677 family and uses the same 28-lead SOIC format, with the principal distinction being the temperature-grade ordering code. No other verified same-footprint, electrically equivalent replacement was identified in the supplied cross-reference results. Broad SAR ADC families such as the AD7606, AD7608, and AD7124 are not automatically drop-in replacements because their channel counts, interfaces, supplies, packages, and data protocols differ. Verify the pinout, timing, and performance before substituting any part.

Is AD677KR the same as AD677JRZ?

AD677KR and AD677JRZ are variants of the same Analog Devices AD677 converter family, but the ordering suffixes indicate different temperature-grade options. Both use the 28-lead SOIC configuration and share the core 16-bit, 100 kSPS SAR converter architecture. They are not identical in rated operating temperature, so AD677JRZ may be preferable where a wider commercial-temperature range is required. The supplied verified snippets do not state the exact temperature limits; consult the manufacturer ordering guide before treating either variant as an equivalent for a specific environmental requirement.

AD677JR vs AD677KR: which version should I choose?

Choose AD677KR when the required environment falls within its specified commercial operating-temperature range, and choose AD677JR when the broader temperature-grade rating associated with the J suffix is required. The verified comparison results identify AD677JR as a distinct ordering option for the same AD677 family, while manufacturer data confirms the common 16-bit, 100 kSPS, 100 kSPS SAR performance. Exact temperature limits were not present in the supplied excerpts, so the decision should be based on the current Analog Devices ordering table and the worst-case ambient temperature of the finished equipment.

When should I choose AD677KR instead of a multiplexed ADC?

Choose AD677KR when the design needs one high-resolution analog channel, a modest conversion rate of up to 100 kSPS, and a straightforward serial output. It avoids the channel-count, synchronization, and acquisition architecture complexity associated with multiplexed converters. The AD677KR is a better fit for dedicated sensor measurement or precision instrumentation than a many-channel system, while a multiplexed ADC is preferable when several inputs must be scanned with shared circuitry. This selection also requires accepting the AD677 family’s LAST TIME BUY lifecycle status.

Is AD677KR suitable for sensor and industrial measurement systems?

AD677KR is suitable for single-channel precision measurement when its input range, reference, power rails, and sampling behavior match the sensor signal. Its 16-bit resolution, 92 dB SINAD, on-chip sample-and-hold, and 100 kSPS conversion rate support data acquisition, instrumentation, and laboratory equipment. For industrial deployment, verify the exact operating-temperature limits and supply requirements before design freeze. Sensor excitation, filtering, input protection, grounding, and reference stability can dominate end-to-end accuracy.

What is the AD677KR pinout?

The verified product information identifies AD677KR as a 28-lead SOIC device, but the supplied excerpts do not include the numbered pin table. The complete pinout must therefore be taken directly from the Analog Devices AD677 datasheet rather than reconstructed from memory. Engineers should verify analog input, reference, supply, ground, serial clock, serial data, control, and signal-ground assignments against the specific package drawing. The product page is https://www.analog.com/en/products/ad677.html, and incorrect clock or reference connections can prevent valid conversion even when the package matches.

How should power, reference, and decoupling be designed for AD677KR?

The AD677KR should be supplied from stable, low-noise analog rails, with the manufacturer-recommended bypass capacitors placed as close as practical to the relevant supply and reference pins. Reference voltage must remain within the device's specified operating range and be quiet enough not to degrade the available 16-bit resolution. Because exact supply values and capacitor recommendations were not included in the verified excerpts, use the official datasheet rather than generic values. Maintain short return paths and separate noisy digital return currents from the sensitive analog reference path.

Can AD7606 or AD7124 replace AD677KR without a PCB change?

No verified drop-in equivalence was established for AD7606 or AD7124 relative to AD677KR, and the supplied alternative-source snippet describes them only as broader SAR ADC possibilities with varying performance characteristics. Their channel counts, packages, interfaces, and operating requirements can differ materially from the single-input AD677KR. They should therefore be treated as redesign candidates rather than drop-in replacements. Any substitution requires a new schematic, footprint, interface-driver, timing, and signal-condition review rather than a simple manufacturer-number substitution.

What lifecycle risk applies to the AD677KR?

The Analog Devices AD677 product page explicitly identifies the family as LAST TIME BUY, so the AD677KR should be treated as a mature rather than newly introduced product. Existing design support and distributor inventory may remain available, but users should not assume unrestricted future production. For a new design, quantify expected demand, request traceability and longevity information, and consider whether an actively supported converter would reduce obsolescence risk. For an existing design, secure enough stock to cover repair and manufacturing requirements.

What tool or interface compatibility should be checked before using AD677KR?

Check the ADC's serial-output clock, data framing, conversion timing, and digital-control levels against the host controller or FPGA before layout release. The AD677KR uses a 16-bit serial output and completes a conversion in 10 microseconds at its stated 100 kSPS rate. The supplied verified excerpts do not include a complete timing table or a named reference design, so engineers must use the current manufacturer datasheet. Also confirm 5 V versus 3.3 V interface compatibility, ground reference, and whether the host can support the required serial clock frequency.

Dữ liệu tham khảo kỹ thuật cho AD677KR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.

Hướng dẫn chọn lựa

Choose AD677KR when the design requires one 16-bit analog input, serial data transfer, and a maximum conversion rate of 100 kSPS. Its integrated sample-and-hold, autocalibration, 92 dB SINAD, and 28-lead SOIC package make it suitable for dedicated sensor channels, laboratory instruments, and industrial measurement modules. Choose AD677JR or AD677JRZ when the AD677 family is retained but the J temperature-grade ordering option better matches the required environmental range. Do not select AD7606, AD7608, AD7124, or another SAR ADC as a direct substitute without accepting a redesign. The principal decision constraint is lifecycle: the AD677 is LAST TIME BUY, so new long-lived programs should confirm supply continuity, while existing programs should purchase adequate documented stock.

So sánh với các sản phẩm thay thế

Tham số	Sản phẩm này	AD677JRZ	AD677JR
Package	28-lead SOIC	28-lead SOIC	28-lead SOIC
Brand	Analog Devices	Analog Devices	Analog Devices
Resolution	16 bit	16 bit	16 bit
Sampling Rate	100 kSPS	100 kSPS	100 kSPS
Conversion Time	10 us	10 us	10 us
Architecture	Switched-capacitor/charge-redistribution SAR	Switched-capacitor/charge-redistribution SAR	Switched-capacitor/charge-redistribution SAR
Output Interface	16-bit serial	16-bit serial	16-bit serial
SINAD	92 dB	92 dB	92 dB
THD	99 dB	99 dB	99 dB
Full-Power Bandwidth	1 MHz	1 MHz	1 MHz
Operating Temperature Grade	K commercial grade; exact limits unavailable	J grade; exact limits unavailable	J grade; exact limits unavailable
Lifecycle Status	LAST TIME BUY	AD677 family LAST TIME BUY	AD677 family LAST TIME BUY

Bảo phân biệt quan trọng

Verified same-family replacement path (vsAD677JRZ)
Single-channel precision with integrated sampling (vsAD676 parallel-output family)
Documented low-distortion performance (vsAD677JR)

Ghi chú thiết kế

Route the analog input, reference, and analog ground paths away from digital clock and serial-data return currents. Place the input network, reference bypass components, and supply decoupling in the order required by the current Analog Devices datasheet. A compact, quiet analog section is especially important because the converter provides 16-bit resolution; excessive trace resistance, via inductance, or shared return paths can degrade effective accuracy even when the nominal ADC specifications are met.

Use the supply voltages and bypass-capacitor values stated in the manufacturer datasheet rather than generic values. The supplied verified excerpts do not provide the exact rails, reference voltage, or recommended capacitance, so these items remain data-needed. Check startup sequencing, supply tolerances, reference settling, and power-supply noise at the pins. If the ADC shares a board with switching converters, isolate its reference and provide local high-frequency bypassing rather than relying on bulk capacitance alone.

Do not substitute a generic 16-bit SAR ADC solely by resolution and sample rate. The AD677's 28-lead SOIC pin functions, serial timing, reference arrangement, supply requirements, and conversion latency must match the existing PCB and firmware. The verified cross-reference results identify AD677 family temperature-grade options, but broader parts such as AD7606, AD7608, and AD7124 can require different packages, channel counts, and interfaces. Verify the manufacturer pinout and timing diagrams before approving any substitution.

Thông tin tuân thủ

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

Không chì

Unknown

Không halogen

Unknown

Khoáng vật xung đột

Unknown

The supplied verified excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification status. No compliance claim should be inferred solely from the manufacturer or distributor listing.

Dữ liệu được xác minh vào: 2026-10-30 — dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART

Nguồn: Distributor, Octopart, Manufacturer Product Page, Distributor, Distributor, Manufacturer Datasheet, Distributor, Distributor, Manufacturer Datasheet, Distributor

Tìm kiếm liên quan

AD677KR AD677KR datasheet PDF Analog Devices AD677KR AD677KR 16 bit 100 kSPS AD677KR 28 lead SOIC AD677KR serial SAR ADC AD677KR sensor acquisition AD677KR industrial measurement ADC AD677KR vs AD677JRZ AD677KR drop-in replacement AD677KR price and stock Where to buy AD677KR online AD677KR pinout and timing What can replace AD677KR?

Các bộ phận và thuật ngữ liên quan

Analog Devices AD677KR AD677JRZ AD677JR AD677 AD676 successive-approximation ADC SAR ADC analog-to-digital converter data-converter IC signal-chain semiconductor 16-bit resolution 100 kSPS sampling rate 10 microsecond conversion time switched-capacitor architecture charge-redistribution architecture on-chip sample-and-hold serial output SINAD total harmonic distortion full-power bandwidth 28-lead SOIC SOIC package family surface-mount package precision data acquisition industrial process measurement autocalibration LAST TIME BUY