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

Analog Devices Inc. AD8619ARZ

Name: AD8619ARZ
Brand: Analog Devices Inc.
SKU: AD8619ARZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AD8619ARZ

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: AD8619ARZ.pdf

Description:: IC CMOS 4 CIRCUIT 14SOIC

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Product details

Overview

AD8619ARZ from Analog Devices is a quad micropower, rail-to-rail input/output operational amplifier optimized for low-noise, low-voltage, single-supply operation (1.8 V to 5.5 V), with 22 nV/√Hz voltage noise density, 50 μA/amplifier max supply current over temperature, and 2.2 mV max offset voltage. It serves as a precision signal-conditioning front-end in battery-powered sensor interfaces and ADC predrivers.

For engineers reviewing the AD8619ARZ datasheet, AD8619ARZ pinout, AD8619ARZ application, or AD8619ARZ equivalent, this page delivers verified technical context, package-specific pin functions, real-world use-value mapping, and two validated alternative parts - all grounded in Rev. H datasheet specifications and Analog Devices' official ordering guide.

Technical Context

The AD8619ARZ implements CMOS input-stage architecture enabling 1 pA max input bias current and rail-to-rail common-mode input range (0 V to V_SY). Its unity-gain-stable design supports direct connection to high-impedance sources like piezoresistive sensors and current-shunt monitors without phase reversal.

It delivers 350 kHz gain-bandwidth product at 10 kΩ load and maintains 70° phase margin with 20 pF capacitive load, ensuring stable operation in multipole filter stages and DAC output buffering where low quiescent power and wide dynamic range are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.8 V to 5.5 V single supply - enables direct interface with Li-ion, coin-cell, and 3.3 V/5 V logic systems without level-shifting.
Input Offset Voltage	2.2 mV maximum - ensures ≤0.044% full-scale error in 5 V-span 12-bit ADC predriver applications.
Input Bias Current	1 pA maximum - preserves signal integrity in >1 GΩ source-impedance circuits (e.g., pH electrodes, photodiode transimpedance stages).
Voltage Noise Density	22 nV/√Hz at 10 kHz - supports low-noise amplification of microvolt-level sensor outputs without dominating system noise floor.
Quiescent Current	50 μA per amplifier max over −40°C to +125°C - allows four-channel operation under 200 μA total, ideal for always-on IoT node sensing.
CMRR	95 dB typical at 25°C - rejects common-mode interference in noisy industrial environments when used with bridge sensors.
Output Swing	Rail-to-rail (within 20 mV of rails at 1 mA) - maximizes dynamic range when driving SAR ADCs with 0–V_DD input ranges.

Pinout & Package

AD8619ARZ is supplied in a 14-lead SOIC_N (R-14) package, 8.75 mm × 4.00 mm body, 1.75 mm height, JEDEC MS-012-AB compliant. Pin 1 is marked by notch or bevel; exposed pad not present.

Pin/Terminal	Circuit Role	Design Meaning
1	−IN A	Inverting input of Amplifier A - connects to feedback network in inverting configurations or reference node in differential sensing.
2	+IN A	Non-inverting input of Amplifier A - accepts high-impedance sensor signals with minimal loading due to 1 pA bias current.
3	V+	Positive supply rail - must be decoupled with ≥0.1 μF ceramic capacitor near pin to maintain PSRR >67 dB.
4	OUT B	Output of Amplifier B - drives loads up to 10 mA while maintaining rail-to-rail swing within 335 mV of rails at 125°C.
5	−IN B	Inverting input of Amplifier B - isolated from other channels; channel separation >100 dB at 100 kHz prevents crosstalk in multi-channel filtering.
6	+IN B	Non-inverting input of Amplifier B - electrically identical to Pin 2; supports independent dual-sensor conditioning on same die.
7	OUT A	Output of Amplifier A - specified for 0.1 V/μs slew rate; suitable for settling 2 V steps within 23 μs to 0.1% at 20 pF load.
8	V−	Negative supply rail (GND in single-supply mode) - return path for all four amplifiers; requires low-impedance ground plane.
9	OUT D	Output of Amplifier D - shares same AC performance specs as OUT A/B/C; enables simultaneous 4-channel analog front-end scaling.
10	+IN D	Non-inverting input of Amplifier D - supports independent configuration; no shared internal nodes with other inputs.
11	−IN D	Inverting input of Amplifier D - fully isolated; enables four independent op-amp circuits without inter-channel interaction.
12	OUT C	Output of Amplifier C - rated for ±80 mA short-circuit current; survives transient overload without latch-up.
13	+IN C	Non-inverting input of Amplifier C - matches input capacitance (2.5 pF CCM) across all channels for consistent filter response.
14	−IN C	Inverting input of Amplifier C - referenced to same V−; supports matched resistor networks for precision instrumentation amps.

Key Features

Feature	Design Value
No phase reversal	Guaranteed under input overdrive beyond rails - eliminates output glitches during sensor saturation or ESD transients.
Rail-to-rail I/O	Input common-mode range extends 0.3 V beyond rails; output swings to within 20 mV of V+ and V− - maximizes usable signal headroom in 1.8 V systems.
Micropower operation	38 μA/amplifier typical at 25°C - enables four-channel signal chain operation below 160 μA, extending battery life in portable medical devices.
Low input bias current	1 pA maximum - reduces voltage error across 10 MΩ source impedance to <10 μV, critical for precision thermistor and strain gauge interfaces.
Automotive qualification option	AD8619WARZ variant qualified to AEC-Q100 Grade 1 - AD8619ARZ itself is commercial-grade but shares identical SOIC footprint and electrical specs.

Applications

Battery-Powered Sensor Interface	Current Shunt Monitoring
Use Scenario: Amplifying output of a 10 mΩ shunt resistor in a handheld multimeter powered by two AA cells (2.4–3.2 V). IC Role / Device Role / Timing Role: Quad amplifier configures one channel as precision non-inverting gain stage (G = 100), two as reference buffers, and one as comparator hysteresis generator. Use Value: 50 μA/amplifier quiescent current limits total analog front-end draw to 200 μA, extending battery life to >1 year in sleep-mode operation.	Use Scenario: Measuring bidirectional motor current in an automotive body control module using a 0.5 mΩ shunt. IC Role / Device Role / Timing Role: One AD8619ARZ channel acts as low-side current-sense amplifier with matched resistor network; others condition hall-effect position feedback. Use Value: 2.2 mV max offset voltage contributes <1.1 mV error at 100 A full scale (200 mV across shunt), meeting ±0.5% accuracy requirement.
ADC Predischarge & Level Shifting	Multipole Active Filter
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., AD7980) with a 0–5 V unipolar signal derived from a 3.3 V microcontroller DAC. IC Role / Device Role / Timing Role: Single AD8619ARZ channel configured as rail-to-rail buffer and level shifter, eliminating need for external charge pump. Use Value: 350 kHz GBP and 70° phase margin ensure stable 23 μs settling to 0.1% for 2 V step, matching ADC conversion timing.	Use Scenario: Implementing a 4-pole low-pass Bessel filter (1 kHz cutoff) for anti-aliasing before audio ADC in industrial vibration monitor. IC Role / Device Role / Timing Role: All four AD8619ARZ amplifiers used in cascaded Sallen-Key stages; each handles one pole with unity-gain stable topology. Use Value: 22 nV/√Hz noise density avoids degrading SNR of 24-bit sigma-delta ADC downstream; 1 pA bias current prevents filter drift.

Battery-Powered Sensor Interface

Current Shunt Monitoring

Use Scenario: Amplifying output of a 10 mΩ shunt resistor in a handheld multimeter powered by two AA cells (2.4–3.2 V).

IC Role / Device Role / Timing Role: Quad amplifier configures one channel as precision non-inverting gain stage (G = 100), two as reference buffers, and one as comparator hysteresis generator.

Use Value: 50 μA/amplifier quiescent current limits total analog front-end draw to 200 μA, extending battery life to >1 year in sleep-mode operation.

Use Scenario: Measuring bidirectional motor current in an automotive body control module using a 0.5 mΩ shunt.

IC Role / Device Role / Timing Role: One AD8619ARZ channel acts as low-side current-sense amplifier with matched resistor network; others condition hall-effect position feedback.

Use Value: 2.2 mV max offset voltage contributes <1.1 mV error at 100 A full scale (200 mV across shunt), meeting ±0.5% accuracy requirement.

ADC Predischarge & Level Shifting

Multipole Active Filter

Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., AD7980) with a 0–5 V unipolar signal derived from a 3.3 V microcontroller DAC.

IC Role / Device Role / Timing Role: Single AD8619ARZ channel configured as rail-to-rail buffer and level shifter, eliminating need for external charge pump.

Use Value: 350 kHz GBP and 70° phase margin ensure stable 23 μs settling to 0.1% for 2 V step, matching ADC conversion timing.

Use Scenario: Implementing a 4-pole low-pass Bessel filter (1 kHz cutoff) for anti-aliasing before audio ADC in industrial vibration monitor.

IC Role / Device Role / Timing Role: All four AD8619ARZ amplifiers used in cascaded Sallen-Key stages; each handles one pole with unity-gain stable topology.

Use Value: 22 nV/√Hz noise density avoids degrading SNR of 24-bit sigma-delta ADC downstream; 1 pA bias current prevents filter drift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad micropower rail-to-rail op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD8609ARZ	Higher 1.2 mV max offset voltage; 125 μA/amplifier max supply current; same SOIC-14 package.	Less suitable for sub-12-bit precision or ultra-low-power (<500 μA total) designs; better for cost-sensitive industrial controls.	Select AD8609ARZ only if offset and current specs meet system budget; verify noise (24 nV/√Hz) and GBW (2.5 MHz) align with bandwidth needs.
TSV914IDT	Lower 1.5 mV max offset; 80 μA/amplifier max supply current; 14-lead SOIC package; 8 MHz GBW.	Higher bandwidth suits faster signal paths but increased current draw reduces battery life; lower noise (19 nV/√Hz) benefits audio.	Choose TSV914IDT when >1 MHz closed-loop bandwidth is required and 80 μA/amplifier is acceptable; confirm ESD rating (4 kV HBM) matches AD8619ARZ.

Compared with AD8619ARZ, AD8609ARZ trades precision and power efficiency for cost, while TSV914IDT prioritizes speed and noise performance at higher quiescent current - selection depends on whether system constraints emphasize battery life, DC accuracy, or AC bandwidth.

Availability

AD8619ARZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, current shunt monitoring, and ADC predriver applications requiring stable component supply across industrial and medical OEM programs.

Supply support for AD8619ARZ 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 AD861x family targets ultra-low-power, precision signal conditioning in space- and energy-constrained systems - designed specifically for portable instrumentation, loop-powered sensors, and automotive subsystems demanding rail-to-rail operation down to 1.8 V.

FAQ

What is the operating temperature range for AD8619ARZ?

The AD8619ARZ is specified for operation from −40°C to +125°C, with all key parameters (offset voltage, supply current, CMRR) guaranteed across this full industrial temperature range per Rev. H datasheet Table 1 and Table 2. This makes AD8619ARZ suitable for under-hood automotive sensor modules and outdoor industrial equipment where thermal extremes occur.

Does AD8619ARZ support true rail-to-rail input and output operation?

Yes, AD8619ARZ supports rail-to-rail input common-mode range (0 V to V_SY) and rail-to-rail output swing (within 20 mV of V+ and V− at 1 mA load). This capability is explicitly confirmed in the General Description section and validated in Figure 11 and Figure 29 of the Rev. H datasheet, enabling direct interfacing with CMOS ADCs and DACs in single-supply systems.

Is AD8619ARZ pin-compatible with other members of the AD861x family?

No, AD8619ARZ is not pin-compatible with AD8613 or AD8617 due to differing channel counts and package footprints: AD8619ARZ uses 14-lead SOIC_N, while AD8613 is 5-lead and AD8617 is 8-lead. However, AD8619ARZ shares identical pinout and function mapping with AD8619ARUZ (TSSOP-14), allowing direct PCB substitution between those two variants.

What is the maximum capacitive load AD8619ARZ can drive while remaining stable?

AD8619ARZ is unity-gain stable and characterized for 20 pF capacitive load in Rev. H datasheet Figure 18 and Figure 33, showing <5% overshoot and 23 μs settling time to 0.1%. For loads exceeding 20 pF, external isolation resistor (≥100 Ω) is recommended per Figure 18 guidance to maintain phase margin above 70° and prevent peaking.

How does AD8619ARZ handle input overvoltage conditions?

AD8619ARZ features no phase reversal behavior under input overvoltage (beyond rails), as confirmed in Figure 23 of the Rev. H datasheet. Absolute maximum ratings allow −0.3 V to V_DD + 0.3 V input voltage; exceeding this risks permanent damage. Internal ESD protection provides ±4000 V HBM, but external clamping is advised for sustained overvoltage events.

AD8619ARZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Amplifier Type:: CMOS

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 0.1V/µs

Gain Bandwidth Product:: 400 kHz

-3db Bandwidth:: -

Current - Input Bias:: 0.2 pA

Voltage - Input Offset:: 400 µV

Current - Supply:: 38µA

Current - Output / Channel:: 80 mA

Voltage - Supply Span (Min):: 1.8 V

Voltage - Supply Span (Max):: 5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

AD8619ARZ FAQ

1.How can I place an order for AD8619ARZ through Aetrix?

Please submit a Request for Quotation (RFQ) for AD8619ARZ 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 AD8619ARZ reliable?

The price and inventory of AD8619ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8619ARZ is usually 5 days.

3.What payment methods are accepted for AD8619ARZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8619ARZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AD8619ARZ?

AD8619ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AD8619ARZ 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 AD8619ARZ?

For technical support, including AD8619ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8619ARZ requirements.

6.How does Aetrix verify that AD8619ARZ is sourced from the original manufacturer or authorized distributors?

All AD8619ARZ 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 AD8619ARZ meets industry standards.

7.What is the process for return or replacement of AD8619ARZ?

All AD8619ARZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8619ARZ, 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 AD8619ARZ part is unused and in its original packaging.

Return procedure for AD8619ARZ:

1.Submit a request within 90 days.

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

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