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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Analog Devices Inc. AD876AR

Name: AD876AR
Brand: Analog Devices Inc.
SKU: AD876AR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AD876AR

Manufacturer:: Analog Devices Inc.

Category:: Analog to Digital Converters (ADC)

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: AD876AR.pdf

Description:: IC ADC 10BIT 20MSPS CMOS 28SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:15,049

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Product details

Overview

AD876AR from Analog Devices is a 10-bit, 20 MSPS CMOS analog-to-digital converter (ADC) with on-chip sample-and-hold, pipelined architecture, and guaranteed no missing codes over –40°C to +85°C. It operates from a single +5 V analog/digital supply and +3.3 V/+5 V digital I/O supply, dissipating 160 mW typical power. Its differential nonlinearity is ±0.5 LSB, input range is 2 V p-p, and full-power bandwidth is 150 MHz - enabling use in CCD-based imaging systems and high-speed data acquisition.

For engineers reviewing the AD876AR datasheet, AD876AR pinout, AD876AR application, or AD876AR equivalent, this page delivers verified technical context, package-specific pin functions, real-world timing and dynamic performance values, and validated alternative options for video, imaging, and portable high-speed digitization designs.

Technical Context

The AD876AR implements a multistage pipelined ADC architecture with output error correction logic, enabling 10-bit accuracy at 20 MSPS while guaranteeing no missing codes across its full industrial temperature range. It uses force-sense reference inputs (REFTF/REFTS, REFBF/REFBS) to compensate for internal ladder voltage drops, and features a track-and-hold amplifier with 4 ns aperture delay and 22 ps aperture jitter.

Its digital interface supports three-state outputs and dual-voltage I/O compatibility: CLK, THREE-STATE, and STBY inputs are referenced to DRVDD (3.0–5.25 V), allowing seamless interfacing with both +5 V and +3.3 V logic families. Pipeline latency is fixed at 3.5 clock cycles, and conversion rate is operational down to 10 kHz without specification degradation.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	10 bits - defines quantization step size of ~1.95 mV for 2 V_p-p input range.
Sampling Rate	20 MSPS - supports Nyquist-limited signal bandwidth up to 10 MHz without aliasing.
Differential Nonlinearity	±0.5 LSB - ensures monotonic transfer function and eliminates code ambiguities in closed-loop control.
Power Dissipation	160 mW typical - enables thermal management in compact PCB layouts without forced cooling.
Input Range	2 V_p-p - compatible with standard video-level signals and CCD output swing when biased via REFTS/REFBS.
Full Power Bandwidth	150 MHz - preserves amplitude fidelity for fast transients and high-frequency harmonics in imaging front-ends.
Aperture Jitter	22 ps - limits SNR degradation to ≤56 dB at 1 MHz input, critical for low-noise spectral analysis.

Pinout & Package

AD876AR is packaged in a 28-lead SOIC (R-28) with exposed pad not present; pinout matches AD876JR but rated for –40°C to +85°C operation. All pins are electrically identical to the commercial-grade AD876JR, including dedicated analog/digital power and ground separation.

Pin/Terminal	Circuit Role	Design Meaning
D0 (LSB) to D9 (MSB)	Digital output data bus	Straight binary coding; three-state controlled by THREE-STATE pin; compatible with +3.3 V or +5 V logic levels.
THREE-STATE	Digital input	Active-low control: pulls outputs to high-impedance state when HIGH; enables bus sharing in multi-ADC systems.
STBY	Digital input	Active-high entry into standby mode; reduces power consumption below 50 mW for power-gated operation.
CLK	Digital input	Single-ended CMOS clock input; internally buffered from DRVDD; supports 20 MSPS with 50 ns period and 23 ns min high/low time.
REFTF / REFTS	Analog input (force/sense)	Top reference force/sense pair; REFTF drives internal 250 Ω ladder; REFTS provides Kelvin feedback to minimize IR drop errors.
REFBF / REFBS	Analog input (force/sense)	Bottom reference force/sense pair; used with REFTF/REFTS to set precise 2 V_p-p input span independent of trace resistance.
AIN	Analog input	Differential-capable single-ended input; 5 pF capacitance; requires drive capable of settling to 10-bit accuracy within 25 ns.
AVDD / AVSS	Analog power	+5 V analog supply and ground; must be within 0.5 V of DVDD to maintain DC accuracy specs.
DVDD / DVSS	Digital power	+5 V digital supply and ground; powers core logic; shares voltage tolerance with AVDD.
DRVDD / DRVSS	I/O power	+3.3 V or +5 V supply for digital I/O buffers; sets input threshold and output voltage levels for all control and data pins.

Key Features

Feature	Design Value
Pipelined multistage architecture with error correction	Enables 10-bit accuracy at 20 MSPS using only a fraction of comparators required by flash ADCs, reducing die area and power.
Force-sense reference interface	Eliminates voltage drop errors from internal 5 Ω routing resistance, ensuring stable 2 V_p-p input span across PCB layout variations.
Three-state digital outputs	Allows direct connection to shared data buses without external bus transceivers, simplifying system-level interconnect in multi-channel digitizers.
Standby mode with sub-50 mW power	Supports burst-mode acquisition in battery-powered scanners and camcorders by cutting power between frames without reset overhead.
Dual-voltage I/O compatibility	DRVDD-selectable logic thresholds enable interoperability with legacy +5 V TTL/CMOS and modern +3.3 V FPGA I/O banks without level shifters.

Applications

Color Document Scanners	Digital Camcorders
Use Scenario: Digitizing RGB line-scan outputs from tri-linear CCD arrays at 20 MSPS per channel under ambient temperature variation. IC Role / Device Role / Timing Role: Primary ADC capturing analog pixel voltages with 10-bit resolution and <22 ps aperture jitter to preserve color fidelity and edge sharpness. Use Value: Guaranteed no missing codes and ±0.5 LSB DNL ensure accurate grayscale reproduction across 0–100% reflectance range without histogram clipping.	Use Scenario: High-speed digitization of composite video or Y/C signals in portable camcorders operating from single Li-ion cell with thermal constraints. IC Role / Device Role / Timing Role: Low-power, single-supply ADC converting baseband video with minimal external components and no external reference IC. Use Value: 160 mW typical dissipation and standby mode reduce thermal load in sealed enclosures; 2 V_p-p input range matches NTSC/PAL signal swing.
Electronic Still Cameras	High-Speed Data Acquisition Modules
Use Scenario: Capturing raw image data from full-frame CCD sensors during short exposure bursts, requiring deterministic latency and consistent linearity. IC Role / Device Role / Timing Role: Precision ADC synchronizing to pixel clock with 3.5-cycle pipeline latency for predictable frame timing in rolling shutter architectures. Use Value: 150 MHz full-power bandwidth preserves transient response of fast-rising pixel edges; REFTF/REFBF force-sense maintains accuracy despite PCB trace IR drop.	Use Scenario: Modular digitizer card for industrial test equipment acquiring transient waveforms (e.g., motor startup, power quality) at 20 MSPS with calibrated DC accuracy. IC Role / Device Role / Timing Role: Core sampling engine providing traceable INL (±1.0 LSB) and offset error (≤0.4% FSR) over –40°C to +85°C for calibration-critical applications. Use Value: Industrial temperature rating and guaranteed specs eliminate need for in-system recalibration; SOIC package supports automated optical inspection (AOI) assembly.

Color Document Scanners

Digital Camcorders

Use Scenario: Digitizing RGB line-scan outputs from tri-linear CCD arrays at 20 MSPS per channel under ambient temperature variation.

IC Role / Device Role / Timing Role: Primary ADC capturing analog pixel voltages with 10-bit resolution and <22 ps aperture jitter to preserve color fidelity and edge sharpness.

Use Value: Guaranteed no missing codes and ±0.5 LSB DNL ensure accurate grayscale reproduction across 0–100% reflectance range without histogram clipping.

Use Scenario: High-speed digitization of composite video or Y/C signals in portable camcorders operating from single Li-ion cell with thermal constraints.

IC Role / Device Role / Timing Role: Low-power, single-supply ADC converting baseband video with minimal external components and no external reference IC.

Use Value: 160 mW typical dissipation and standby mode reduce thermal load in sealed enclosures; 2 V_p-p input range matches NTSC/PAL signal swing.

Electronic Still Cameras

High-Speed Data Acquisition Modules

Use Scenario: Capturing raw image data from full-frame CCD sensors during short exposure bursts, requiring deterministic latency and consistent linearity.

IC Role / Device Role / Timing Role: Precision ADC synchronizing to pixel clock with 3.5-cycle pipeline latency for predictable frame timing in rolling shutter architectures.

Use Value: 150 MHz full-power bandwidth preserves transient response of fast-rising pixel edges; REFTF/REFBF force-sense maintains accuracy despite PCB trace IR drop.

Use Scenario: Modular digitizer card for industrial test equipment acquiring transient waveforms (e.g., motor startup, power quality) at 20 MSPS with calibrated DC accuracy.

IC Role / Device Role / Timing Role: Core sampling engine providing traceable INL (±1.0 LSB) and offset error (≤0.4% FSR) over –40°C to +85°C for calibration-critical applications.

Use Value: Industrial temperature rating and guaranteed specs eliminate need for in-system recalibration; SOIC package supports automated optical inspection (AOI) assembly.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit, 20 MSPS ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD9203AR-20	10-bit, 40 MSPS; LVDS outputs; 3.3 V only supply; higher power (225 mW); no force-sense reference	Requires LVDS receiver and separate 3.3 V rail; better suited for FPGA-based systems with high-speed serial interfaces	Select AD9203AR-20 only if system demands >20 MSPS or LVDS serialization; AD876AR remains optimal for parallel bus, mixed-voltage, or cost-sensitive designs.
MAX1186ECM+	10-bit, 20 MSPS; +3.3 V only; internal reference; no standby mode; SO-28 package	Reduces BOM count by integrating reference but sacrifices flexibility in input range and temperature stability	Choose MAX1186ECM+ for space-constrained, single-rail designs where reference tuning is unnecessary; AD876AR preferred when adjustable 2 V_p-p span or industrial temp grade is required.

Compared with AD9203AR-20 and MAX1186ECM+, the AD876AR uniquely combines industrial temperature rating, force-sense reference flexibility, three-state parallel outputs, and standby power control - making it the only option among the three qualified for thermally demanding, multi-voltage, and precision analog front-end applications.

Availability

AD876AR is available at Aetrix Electronics and suitable for color document scanners, digital camcorders, electronic still cameras, high-speed data acquisition modules, and industrial imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD876AR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.

The AD876AR belongs to Analog Devices' high-speed precision ADC product line, designed specifically for CCD imaging, video digitization, and portable instrumentation where resolution, speed, and low power must coexist under industrial environmental conditions.

FAQ

What is the operating temperature range of the AD876AR?

The AD876AR is specified for operation from –40°C to +85°C, qualifying it for industrial and extended-temperature applications such as outdoor imaging equipment and factory-floor data loggers. This range exceeds the 0°C to +70°C rating of the AD876JR and AD876JST variants, and is confirmed in the Ordering Guide section of the official AD876 datasheet Rev. B. The AD876AR maintains guaranteed specifications - including ±0.5 LSB DNL and no missing codes - across this full range.

Does the AD876AR require an external reference voltage source?

Yes, the AD876AR requires an external reference applied to REFTF and REFBF pins, with optional force-sense connections to REFTS and REFBS. It does not include an internal reference. The device expects a nominal 4.0 V top and 2.0 V bottom reference to achieve its specified 2 V_p-p input range. Reference current draw is approximately 8.0 mA, and the force-sense topology compensates for voltage drops in PCB traces and internal routing - a key design feature confirmed in the "Reference Input Driving" section of the AD876 datasheet.

Can the AD876AR interface directly with a 3.3 V FPGA I/O bank?

Yes, the AD876AR can interface directly with a 3.3 V FPGA I/O bank by setting DRVDD = +3.3 V. This configures all digital inputs (CLK, THREE-STATE, STBY) with a nominal threshold of 1.65 V and ensures digital outputs meet +3.3 V logic levels (VOH ≥ 2.4 V at IOH = 50 µA). This dual-voltage capability is explicitly documented in the Digital Specifications table (Rev. B, p.3) and eliminates the need for external level shifters in mixed-supply systems.

What is the pipeline latency of the AD876AR, and how does it affect system timing?

The AD876AR has a fixed pipeline latency of 3.5 clock cycles, meaning output data for a given sample appears 3.5 CLK periods after the sampling edge. This deterministic latency enables precise synchronization in frame-based imaging systems and simplifies FIFO depth calculation in buffer management. The value is specified in the Timing Specifications table (Rev. B, p.3) and is independent of input signal frequency or temperature - a critical attribute for real-time control loops and time-of-flight measurements.

Is the AD876AR pin-compatible with the AD876JR or AD876JRS?

Yes, the AD876AR is fully pin-compatible with the AD876JR (28-lead SOIC, 0°C to +70°C) and AD876JRS (28-lead SSOP, 0°C to +70°C), sharing identical pin count, pinout, and electrical functionality. The only difference is the extended temperature rating (–40°C to +85°C) and associated screening for the AD876AR. This compatibility is confirmed in the Ordering Guide (Rev. B, p.5) and allows drop-in replacement in existing designs requiring enhanced thermal robustness.

AD876AR Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Number of Bits:: 10

Sampling Rate (Per Second):: 20M

Number of Inputs:: 1

Input Type:: -

Data Interface:: Parallel

Configuration:: -

Ratio - S/H:ADC:: -

Number of A/D Converters:: 1

Architecture:: -

Reference Type:: -

Voltage - Supply, Analog:: -

Voltage - Supply, Digital:: -

Features:: -

Operating Temperature:: -40°C ~ 85°C

Supplier Device Package:: 28-SOIC

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

AD876AR FAQ

1.How can I place an order for AD876AR through Aetrix?

Please submit a Request for Quotation (RFQ) for AD876AR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AD876AR reliable?

The price and inventory of AD876AR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD876AR is usually 5 days.

3.What payment methods are accepted for AD876AR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD876AR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AD876AR?

AD876AR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AD876AR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AD876AR?

For technical support, including AD876AR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD876AR requirements.

6.How does Aetrix verify that AD876AR is sourced from the original manufacturer or authorized distributors?

All AD876AR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD876AR meets industry standards.

7.What is the process for return or replacement of AD876AR?

All AD876AR units undergo pre-shipment inspection (PSI). If there is an issue with AD876AR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AD876AR part is unused and in its original packaging.

Return procedure for AD876AR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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