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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. ADA4841-1YRZ

Name: ADA4841-1YRZ
Brand: Analog Devices Inc.
SKU: ADA4841-1YRZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4841-1YRZ

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADA4841-1YRZ.pdf

Description:: IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

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Product details

Overview

ADA4841-1YRZ from Analog Devices is a single-channel, rail-to-rail output, voltage-feedback operational amplifier optimized for low-noise, low-power precision signal conditioning. It delivers 2.1 nV/√Hz input voltage noise, 12 V/µs slew rate, and −105 dBc harmonic distortion at 100 kHz while consuming only 1.1 mA per amplifier - making it ideal for driving 16-bit PulSAR® ADCs such as the AD7685 in battery-powered instrumentation.

For engineers reviewing the ADA4841-1YRZ datasheet, ADA4841-1YRZ pinout, ADA4841-1YRZ application, or ADA4841-1YRZ equivalent, key selection criteria include its 80 MHz −3 dB bandwidth (G = +1), 0.3 mV max input offset voltage, power-down functionality, and guaranteed operation from −40°C to +125°C in industrial environments.

Technical Context

The ADA4841-1YRZ employs a PNP-input stage with symmetrical folded cascode architecture on Analog Devices' XFCB process, enabling ultra-low 1/f noise (7 nV/√Hz @ 10 Hz) and sub-1 µV/°C offset drift. Its rail-to-rail output stage supports ±4.955 V swing (±5 V supply) with 30 mA sourcing/60 mA sinking capability.

It features a dedicated POWER DOWN pin (Pin 5 in SOIC-R package) that reduces quiescent current to 40–90 µA when asserted below 3.2 V, with 1 µs enable and 40 µs disable switching speed. The amplifier remains unity-gain stable and drives up to 15 pF capacitive load with minimal peaking.

Key Specifications

Parameter	Value and Actual Design Meaning
−3 dB Bandwidth	80 MHz at G = +1 - supports high-fidelity signal amplification up to audio and low RF frequencies without gain roll-off.
Slew Rate	12 V/µs - enables clean 2 V_p-p step response in ≤175 ns (0.1% settling), critical for fast-settling ADC driver stages.
Input Voltage Noise	2.1 nV/√Hz @ 100 kHz - preserves SNR in precision sensor front-ends and high-resolution data acquisition systems.
Harmonic Distortion	−105 dBc HD3 @ 100 kHz, 2 V_p-p - ensures minimal spectral contamination when driving 16-bit ADCs like AD7685.
Quiescent Current	1.1 mA/amp (typ) - enables multi-channel, battery-operated designs with extended runtime and low thermal load.
Input Offset Voltage	300 µV (max) - maintains DC accuracy in closed-loop configurations requiring <1 LSB error at 16-bit resolution.
Operating Temp Range	−40°C to +125°C - qualified for industrial and automotive under-hood sensing applications without derating.

Pinout & Package

ADA4841-1YRZ is supplied in an 8-lead SOIC_N (R) package (JEDEC MS-012AA), with exposed pad connected to ground for thermal performance. Pin 1 is VOUT; Pin 2 is −VS; Pin 3 is +IN; Pin 4 is −IN; Pin 5 is POWER DOWN; Pin 6 is +VS; Pins 7 and 8 are NC.

Pin/Terminal	Circuit Role	Design Meaning
VOUT (Pin 1)	Amplifier output node	Delivers rail-to-rail swing (≤50 mV from rails); drives ADC inputs or reconstruction filters directly.
−VS (Pin 2)	Negative supply connection	Accepts −5 V to 0 V (single-supply) or dual supplies; PSRR > 96 dB minimizes negative rail noise coupling.
+IN (Pin 3)	Inverting input reference	High common-mode range (−5.1 V to +4 V @ ±5 V); supports level-shifting and differential-to-single-ended conversion.
−IN (Pin 4)	Inverting input	Differential input impedance 25 kΩ; matched with +IN for precision gain-setting networks.
POWER DOWN (Pin 5)	Active-low shutdown control	Pulls quiescent current to <90 µA when <3.2 V; enables system-level power gating in portable instruments.
+VS (Pin 6)	Positive supply connection	Operates from 2.7 V to 12 V; PSRR > 95 dB rejects positive rail ripple in noisy digital systems.
NC (Pins 7, 8)	No-connect terminals	Internally unused; must remain unconnected per datasheet to avoid parametric shift or instability.

Key Features

Feature	Design Value
Rail-to-rail output swing	Swings within 50 mV of either supply rail - maximizes dynamic range in low-voltage (3 V) systems and preserves ADC full-scale utilization.
Low 1/f noise	7 nV/√Hz @ 10 Hz - reduces low-frequency drift in precision weigh scales, medical ECG front-ends, and thermocouple amplifiers.
Capacitive load drive	Stable with up to 15 pF - eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces.
Power-down mode	Reduces I_Q to 40–90 µA - extends battery life in intermittent-sampling data loggers and wireless sensor nodes.
Industrial temperature rating	Specified over −40°C to +125°C - eliminates derating calculations for factory automation, motor control feedback, and outdoor instrumentation.

Applications

Portable Instrumentation	16-bit ADC Driver
Use Scenario: Handheld multimeters and battery-powered oscilloscope front-ends requiring low self-heating and extended runtime. IC Role / Device Role / Timing Role: Precision buffer and gain stage preceding SAR ADC sampling; provides low-noise, low-distortion signal conditioning. Use Value: 1.1 mA quiescent current enables >100 hours of operation on two AA cells; rail-to-rail output ensures full ADC code utilization across supply voltage sag.	Use Scenario: Driving AD7685/AD7686 16-bit PulSAR® ADCs in high-channel-count data acquisition systems. IC Role / Device Role / Timing Role: High-speed, low-distortion driver with fast settling (<175 ns to 0.1%) synchronized to ADC conversion clock. Use Value: −105 dBc HD3 at 100 kHz prevents harmonic aliasing into Nyquist band; 80 MHz bandwidth accommodates anti-alias filter roll-off.
Medical Sensor Interface	Industrial Process Monitoring
Use Scenario: Low-noise amplification of ECG, EEG, or EMG bio-signals in portable diagnostic devices. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with ultra-low 1/f noise and high CMRR (>115 dB) for common-mode interference rejection. Use Value: 7 nV/√Hz @ 10 Hz minimizes baseline wander; input common-mode range extending to −VS supports single-supply electrode biasing.	Use Scenario: Signal conditioning for RTD, thermocouple, or strain gauge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage follower or gain stage interfacing with 24-bit ΣΔ ADCs; operates reliably across wide ambient temperatures. Use Value: Guaranteed −40°C to +125°C operation avoids thermal calibration drift; 0.3 mV max V_OS limits measurement error to <0.01% FS in 4–20 mA loop receivers.

Portable Instrumentation

16-bit ADC Driver

Use Scenario: Handheld multimeters and battery-powered oscilloscope front-ends requiring low self-heating and extended runtime.

IC Role / Device Role / Timing Role: Precision buffer and gain stage preceding SAR ADC sampling; provides low-noise, low-distortion signal conditioning.

Use Value: 1.1 mA quiescent current enables >100 hours of operation on two AA cells; rail-to-rail output ensures full ADC code utilization across supply voltage sag.

Use Scenario: Driving AD7685/AD7686 16-bit PulSAR® ADCs in high-channel-count data acquisition systems.

IC Role / Device Role / Timing Role: High-speed, low-distortion driver with fast settling (<175 ns to 0.1%) synchronized to ADC conversion clock.

Use Value: −105 dBc HD3 at 100 kHz prevents harmonic aliasing into Nyquist band; 80 MHz bandwidth accommodates anti-alias filter roll-off.

Medical Sensor Interface

Industrial Process Monitoring

Use Scenario: Low-noise amplification of ECG, EEG, or EMG bio-signals in portable diagnostic devices.

IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with ultra-low 1/f noise and high CMRR (>115 dB) for common-mode interference rejection.

Use Value: 7 nV/√Hz @ 10 Hz minimizes baseline wander; input common-mode range extending to −VS supports single-supply electrode biasing.

Use Scenario: Signal conditioning for RTD, thermocouple, or strain gauge sensors in PLC analog input modules.

IC Role / Device Role / Timing Role: Precision voltage follower or gain stage interfacing with 24-bit ΣΔ ADCs; operates reliably across wide ambient temperatures.

Use Value: Guaranteed −40°C to +125°C operation avoids thermal calibration drift; 0.3 mV max V_OS limits measurement error to <0.01% FS in 4–20 mA loop receivers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
OPA333AIDBVR	Zero-drift architecture; 0.02 µV/°C drift vs. ADA4841-1YRZ's 1 µV/°C; lower bandwidth (350 kHz) and higher noise (5.5 nV/√Hz).	Better for DC-critical, low-frequency (<10 kHz) applications like precision references; unsuitable for ADC drivers above 100 kHz.	Select OPA333AIDBVR only when ultra-low drift dominates over speed/noise; avoid for ADC interface or AC-coupled signal chains.
AD8605ARTZ-REEL7	Higher bandwidth (10 MHz), higher noise (4.2 nV/√Hz), no power-down pin; similar rail-to-rail output and 1.2 mA I_Q.	Preferred for general-purpose precision buffering where shutdown is unnecessary; lacks fast settling and low distortion needed for 16-bit ADCs.	Choose AD8605ARTZ-REEL7 for cost-sensitive, non-battery applications requiring moderate speed; retain ADA4841-1YRZ for low-noise, low-distortion, power-gated designs.

Compared with OPA333AIDBVR and AD8605ARTZ-REEL7, ADA4841-1YRZ uniquely balances 80 MHz bandwidth, 2.1 nV/√Hz noise, −105 dBc distortion, and active power-down - making it the only option among the three qualified for high-fidelity, battery-efficient 16-bit ADC driver roles.

Availability

ADA4841-1YRZ is available at Aetrix Electronics and suitable for portable instrumentation, industrial process monitoring, and medical sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ADA4841-1YRZ 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, headquartered in Norwood, MA.

The ADA4841 family was engineered specifically for low-noise, low-power, precision signal conditioning in high-resolution data acquisition - targeting 16-bit to 18-bit ADC drivers, portable test equipment, and industrial sensor interfaces.

FAQ

What is the maximum capacitive load the ADA4841-1YRZ can drive stably?

The ADA4841-1YRZ is specified to drive up to 15 pF capacitive load with ≤30% overshoot in unity-gain configuration. This allows direct connection to typical SAR ADC input capacitances (e.g., AD7685: 12 pF) without external isolation resistors, preserving bandwidth and settling time. For loads >15 pF, a small series resistor (10–50 Ω) at the output is recommended to maintain phase margin.

Does the ADA4841-1YRZ support single-supply operation?

Yes, ADA4841-1YRZ operates from a single 2.7 V to 12 V supply. With V_CM ranging from −0.1 V to +4 V (at V_S = 5 V), and rail-to-rail output swing (e.g., 0.029 V to 4.974 V), it supports true single-supply signal conditioning. Input biasing and reference design must ensure the −IN/+IN common-mode voltage stays within spec to avoid clipping or increased distortion.

What is the function of Pin 5 (POWER DOWN) on the ADA4841-1YRZ?

Pin 5 is the active-low POWER DOWN control input. When held <3.2 V (typically grounded), ADA4841-1YRZ enters low-power shutdown mode, reducing quiescent current to 40–90 µA. When pulled >3.6 V (e.g., to +VS), the amplifier resumes normal operation with 1 µs enable time. This pin enables system-level power gating in battery-powered devices without requiring external switches or regulators.

How does the ADA4841-1YRZ compare to the dual-channel ADA4841-2 in performance?

ADA4841-1YRZ and ADA4841-2 share identical electrical specifications (noise, bandwidth, distortion, offset) per channel. Key differences: ADA4841-1YRZ is single-channel in 8-lead SOIC; ADA4841-2 is dual-channel in 8-lead MSOP/SOIC/LFCSP. ADA4841-2 adds matching specs (e.g., 70 µV max input offset voltage match), while ADA4841-1YRZ offers dedicated space-optimized layout for single-channel high-density designs.

Is the ADA4841-1YRZ suitable for driving the AD7685 16-bit PulSAR® ADC?

Yes - ADA4841-1YRZ is explicitly recommended in the datasheet for driving AD7685/AD7686. Its 175 ns 0.1% settling time, −105 dBc HD3 at 100 kHz, 80 MHz bandwidth, and rail-to-rail output ensure full 16-bit accuracy without missing codes. Combined with 1.1 mA quiescent current, ADA4841-1YRZ enables high-performance, low-power ADC interface solutions unmatched by general-purpose op amps.

ADA4841-1YRZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Amplifier Type:: Voltage Feedback

Number of Circuits:: 1

Output Type:: Rail-to-Rail

Slew Rate:: 13V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 80 MHz

Current - Input Bias:: 3 µA

Voltage - Input Offset:: 40 µV

Current - Supply:: 1.5mA

Current - Output / Channel:: 60 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 12 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ADA4841-1YRZ FAQ

1.How can I place an order for ADA4841-1YRZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4841-1YRZ 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 ADA4841-1YRZ reliable?

The price and inventory of ADA4841-1YRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4841-1YRZ is usually 5 days.

3.What payment methods are accepted for ADA4841-1YRZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4841-1YRZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4841-1YRZ?

ADA4841-1YRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4841-1YRZ 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 ADA4841-1YRZ?

For technical support, including ADA4841-1YRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4841-1YRZ requirements.

6.How does Aetrix verify that ADA4841-1YRZ is sourced from the original manufacturer or authorized distributors?

All ADA4841-1YRZ 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 ADA4841-1YRZ meets industry standards.

7.What is the process for return or replacement of ADA4841-1YRZ?

All ADA4841-1YRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4841-1YRZ, 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 ADA4841-1YRZ part is unused and in its original packaging.

Return procedure for ADA4841-1YRZ:

1.Submit a request within 90 days.

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

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