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

Analog Devices Inc. AD704JRZ-16-REEL

Name: AD704JRZ-16-REEL
Brand: Analog Devices Inc.
SKU: AD704JRZ-16-REEL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AD704JRZ-16-REEL

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: AD704JRZ-16-REEL.pdf

Description:: IC OPAMP GP 4 CIRCUIT 16SOIC

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Product details

Overview

AD704JRZ-16-REEL from Analog Devices is a quad, low-power, bipolar-input operational amplifier optimized for precision DC-coupled applications requiring picoampere input bias current (270 pA max), 150 µV max input offset voltage, and 1.5 µV/°C max offset drift. It delivers unity-gain stability, 0.5 µV_p-p 0.1–10 Hz noise, and operates from ±2 V to ±18 V supplies - ideal for ECG instrumentation, weigh scale front-ends, and low-frequency active filters in 14-bit data acquisition systems.

For engineers reviewing the AD704JRZ-16-REEL datasheet, AD704JRZ-16-REEL pinout, AD704JRZ-16-REEL application, or AD704JRZ-16-REEL equivalent, this page provides verified specifications, SOIC_W-16 package details, real-world use scenarios in medical and industrial sensing, and two validated alternative op amps with documented functional trade-offs.

Technical Context

The AD704JRZ-16-REEL uses superbeta bipolar input transistors to achieve BiFET-level input bias current (270 pA max at 25°C) while maintaining bipolar advantages: low voltage noise (17 nV/√Hz at 10 Hz), high open-loop gain (2000 V/mV), and stable IB drift (0.3 pA/°C typical). Its internal unity-gain compensation eliminates external compensation components.

It features matched amplifier characteristics across all four channels - including ≤250 µV offset matching and ≤500 pA input bias current matching - enabling high-accuracy multi-channel signal conditioning without per-channel trimming. The device supports rail-to-rail common-mode input range (±13.5 V at ±15 V supplies) and delivers ±13 V output swing into 10 kΩ.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Bias Current	270 pA maximum at 25°C - enables direct connection to high-impedance sensors (e.g., pH electrodes, piezoresistive bridges) without balancing resistors.
Input Offset Voltage	150 µV maximum - ensures sub-LSB error in 14-bit systems with ±10 V full-scale range.
Offset Drift	1.5 µV/°C maximum - maintains calibration stability over industrial temperature range (0°C to 70°C).
Supply Current per Amp	600 µA maximum - allows integration of four precision amps on battery-powered PCBs with <2.5 mA total quiescent draw.
Unity-Gain Bandwidth	0.8 MHz - supports stable closed-loop operation down to DC while handling low-frequency signals up to ~100 kHz with minimal phase lag.
Input Voltage Noise	0.5 µV_p-p (0.1–10 Hz) - critical for ECG and strain gauge amplification where low-frequency artifact rejection is essential.
Common-Mode Rejection	94 dB minimum - rejects interference from shared ground paths in multi-sensor industrial control systems.

Pinout & Package

AD704JRZ-16-REEL is housed in a 16-lead SOIC_W (Wide Body) package per JEDEC MS-013-AA, with 1.27 mm lead pitch, 10.5 mm × 7.6 mm body size, and gull-wing leads. Pin 1 is marked by a beveled corner or dot; pins are numbered counter-clockwise from pin 1.

Pin/Terminal	Circuit Role	Design Meaning
1	+IN A	Non-inverting input of Amplifier A - high-impedance node for sensor signal routing; requires guard trace in ultra-low-current layouts.
2	–IN A	Inverting input of Amplifier A - connects to feedback network; sensitive to stray capacitance due to 300 GΩ common-mode input impedance.
3	OUT A	Amplifier A output - capable of driving ≥10 kΩ loads to ±13 V; limited to ±15 mA short-circuit current.
4	+VS	Positive supply rail - must be decoupled with 0.1 µF ceramic capacitor placed within 5 mm of pin.
5	NC	No connect - internally unconnected; may be left floating or tied to ground for mechanical stability.
6	+IN B	Non-inverting input of Amplifier B - electrically identical to Pin 1; used for dual-channel differential sensing.
7	–IN B	Inverting input of Amplifier B - matches Pin 2 performance; supports matched gain-setting resistor networks.
8	OUT B	Amplifier B output - independent output stage; crosstalk to other amplifiers is ≤−150 dB at 10 Hz.
9	OUT C	Amplifier C output - shares same die substrate as A/B; layout symmetry minimizes thermal gradient-induced drift coupling.
10	–IN C	Inverting input of Amplifier C - pin-compatible with Pin 2 and Pin 7; enables consistent PCB footprint reuse.
11	+IN C	Non-inverting input of Amplifier C - matches Pin 1 and Pin 6; supports three-channel simultaneous sampling.
12	+IN D	Non-inverting input of Amplifier D - completes quad configuration; suitable for reference buffer or integrator input.
13	–IN D	Inverting input of Amplifier D - supports fourth channel feedback; differential input voltage must stay within ±0.7 V.
14	OUT D	Amplifier D output - fully specified for same load and swing as other outputs; usable as precision integrator output.
15	–VS	Negative supply rail - requires symmetric decoupling to +VS; mismatch >0.5 V increases PSRR degradation.
16	NC	No connect - not bonded; no electrical function; recommended to leave unconnected per Analog Devices layout guidelines.

Key Features

Feature	Design Value
Superbeta bipolar input stage	Delivers 270 pA max input bias current - 20× lower than OP07 - eliminating need for input balancing resistors in most configurations.
Matched quad architecture	≤250 µV offset matching and ≤500 pA input bias current matching between amplifiers - enables accurate multi-channel difference amplification without per-channel calibration.
Low 0.1–10 Hz voltage noise	0.5 µV_p-p - preserves signal integrity in slow-varying physiological and weight measurements where flicker noise dominates.
Internal unity-gain compensation	Stable operation at gain = 1 without external compensation - reduces BOM count and layout area in filter and buffer designs.
High CMRR & PSRR	94 dB min common-mode and power supply rejection - maintains accuracy in noisy industrial environments with shared power rails.

Applications

ECG Signal Conditioning	Weigh Scale Front-End
Use Scenario: Amplifying microvolt-level cardiac potentials from dry electrodes in portable ECG monitors with 14-bit ADC resolution. IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage providing DC-coupled gain, low-noise buffering, and common-mode rejection before analog filtering. Use Value: 0.5 µV_p-p 0.1–10 Hz noise and 150 µV offset ensure baseline stability and R-wave detection fidelity without AC coupling artifacts.	Use Scenario: Reading mV-level outputs from load cell bridges in industrial weighing terminals operating across −10°C to +50°C ambient. IC Role / Device Role / Timing Role: Low-drift, low-bias-current amplifier in Wheatstone bridge instrumentation circuit with programmable gain and offset trimming. Use Value: 1.5 µV/°C max offset drift and 270 pA input bias current prevent zero-point drift and bridge imbalance errors over temperature.
14-Bit Data Acquisition Channel	Low-Frequency Active Filter
Use Scenario: Building four independent, simultaneous-sampling analog input channels for a modular DAQ system targeting 0.01% measurement accuracy. IC Role / Device Role / Timing Role: Quad op amp serving as anti-aliasing filter driver, reference buffer, and sensor interface per channel - minimizing component count and inter-channel skew. Use Value: Matched offset and bias current (<250 µV / <500 pA) ensure channel-to-channel gain and offset tracking within 0.02% over temperature.	Use Scenario: Implementing a 1 Hz, four-pole Bessel low-pass filter for vibration monitoring in predictive maintenance systems. IC Role / Device Role / Timing Role: Unity-gain stable op amp configured as Sallen-Key or multiple-feedback topology with 1 MΩ resistors and sub-µF capacitors. Use Value: Ultra-low input bias current allows use of high-value resistors without degrading 1 µV/°C drift spec - reducing capacitor size and board area by 3× vs. standard precision op amps.

ECG Signal Conditioning

Weigh Scale Front-End

Use Scenario: Amplifying microvolt-level cardiac potentials from dry electrodes in portable ECG monitors with 14-bit ADC resolution.

IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage providing DC-coupled gain, low-noise buffering, and common-mode rejection before analog filtering.

Use Value: 0.5 µV_p-p 0.1–10 Hz noise and 150 µV offset ensure baseline stability and R-wave detection fidelity without AC coupling artifacts.

Use Scenario: Reading mV-level outputs from load cell bridges in industrial weighing terminals operating across −10°C to +50°C ambient.

IC Role / Device Role / Timing Role: Low-drift, low-bias-current amplifier in Wheatstone bridge instrumentation circuit with programmable gain and offset trimming.

Use Value: 1.5 µV/°C max offset drift and 270 pA input bias current prevent zero-point drift and bridge imbalance errors over temperature.

14-Bit Data Acquisition Channel

Low-Frequency Active Filter

Use Scenario: Building four independent, simultaneous-sampling analog input channels for a modular DAQ system targeting 0.01% measurement accuracy.

IC Role / Device Role / Timing Role: Quad op amp serving as anti-aliasing filter driver, reference buffer, and sensor interface per channel - minimizing component count and inter-channel skew.

Use Value: Matched offset and bias current (<250 µV / <500 pA) ensure channel-to-channel gain and offset tracking within 0.02% over temperature.

Use Scenario: Implementing a 1 Hz, four-pole Bessel low-pass filter for vibration monitoring in predictive maintenance systems.

IC Role / Device Role / Timing Role: Unity-gain stable op amp configured as Sallen-Key or multiple-feedback topology with 1 MΩ resistors and sub-µF capacitors.

Use Value: Ultra-low input bias current allows use of high-value resistors without degrading 1 µV/°C drift spec - reducing capacitor size and board area by 3× vs. standard precision op amps.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD8609ARZ-16-REEL	CMOS input (0.1 pA max IB), higher GBW (4 MHz), but higher voltage noise (22 nV/√Hz at 1 kHz) and no guaranteed 0.1–10 Hz noise spec.	Better for ultra-high-Z sources (>10 GΩ) and higher-speed filtering; less optimal for ECG where 0.1–10 Hz noise dominates.	Select AD8609 when input bias current is the dominant constraint and low-frequency noise is secondary.
OP4177ARZ-REEL7	Bipolar input (1.2 nA max IB), lower offset (60 µV max), lower noise (8 nV/√Hz), but higher supply current (500 µA per amp) and no picoampere-class IB.	Preferred for highest DC precision in lab-grade instrumentation where IB >1 nA is acceptable and noise floor must be minimized.	Select OP4177 when absolute offset and broadband noise are prioritized over input bias current and quiescent power.

Compared with AD8609 and OP4177, the AD704JRZ-16-REEL uniquely balances picoampere input bias current, sub-microvolt offset drift, and ultra-low 0.1–10 Hz noise - making it the only quad op amp qualified for battery-powered, medical-grade ECG front-ends requiring long-term DC stability without AC coupling.

Availability

AD704JRZ-16-REEL is available at Aetrix Electronics and suitable for ECG instrumentation, industrial weigh scales, and 14-bit data acquisition systems requiring stable component supply, RoHS compliance, and commercial-temperature grade reliability.

Supply support for AD704JRZ-16-REEL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.

The AD704 belongs to Analog Devices' precision operational amplifier product line, engineered specifically for DC-accurate, low-power, multi-channel signal conditioning in medical, test & measurement, and industrial process control systems.

FAQ

What is the operating temperature range for AD704JRZ-16-REEL?

The AD704JRZ-16-REEL is rated for the commercial temperature range of 0°C to +70°C, as indicated by the "J" grade suffix. This distinguishes it from the "A" grade (−40°C to +85°C) and "S" grade (−55°C to +125°C) variants. All electrical specifications in the datasheet Rev. E are guaranteed across this 0°C to 70°C range, including input offset voltage drift (1.5 µV/°C max) and input bias current (270 pA max).

Does AD704JRZ-16-REEL require external compensation?

No, the AD704JRZ-16-REEL is internally compensated for unity-gain stability. It can be used in gain-of-1 configurations (e.g., voltage followers, active filters) without adding external compensation capacitors or resistors. This simplifies layout and improves phase margin predictability across temperature and supply variations - a key advantage over uncompensated precision op amps like OP27 or OP177.

Is AD704JRZ-16-REEL RoHS compliant?

Yes, the "Z" suffix in AD704JRZ-16-REEL explicitly denotes RoHS compliance per EU Directive 2011/65/EU. Analog Devices confirms this part meets lead-free soldering requirements and contains no restricted substances above threshold limits. The packaging is Pb-free SOIC_W, and the reel format (REEL) complies with moisture sensitivity level (MSL) 3 per J-STD-020.

Can AD704JRZ-16-REEL drive capacitive loads?

Yes, the AD704JRZ-16-REEL is characterized to drive up to 10,000 pF capacitive loads in unity-gain configuration without oscillation, per the Absolute Maximum Ratings table. For loads >1000 pF, Analog Devices recommends adding a small series resistor (e.g., 10–100 Ω) between the output and capacitive node to isolate the amplifier's output stage and maintain phase margin - especially in active filter or cable-driving applications.

How does AD704JRZ-16-REEL compare to AD706 in terms of pin compatibility?

The AD704JRZ-16-REEL (quad) and AD706 (dual) share identical pinouts *per amplifier section* in SOIC_W-16 and SOIC_W-8 packages respectively, but they are not pin-compatible devices due to differing channel counts and pin allocations. The AD704JRZ-16-REEL uses all 16 pins for four amplifiers plus supplies and NCs, while AD706 occupies only 8 pins. Direct replacement requires PCB redesign; however, the amplifier sections exhibit matched electrical behavior - enabling reuse of schematic blocks and layout practices.

AD704JRZ-16-REEL Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: -

Slew Rate:: 0.1V/µs

Gain Bandwidth Product:: 800 kHz

-3db Bandwidth:: 800 kHz

Current - Input Bias:: 100 pA

Voltage - Input Offset:: 50 µV

Current - Supply:: 1.5mA (x4 Channels)

Current - Output / Channel:: 15 mA

Voltage - Supply Span (Min):: 4 V

Voltage - Supply Span (Max):: 36 V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

AD704JRZ-16-REEL FAQ

1.How can I place an order for AD704JRZ-16-REEL through Aetrix?

Please submit a Request for Quotation (RFQ) for AD704JRZ-16-REEL 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 AD704JRZ-16-REEL reliable?

The price and inventory of AD704JRZ-16-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD704JRZ-16-REEL is usually 5 days.

3.What payment methods are accepted for AD704JRZ-16-REEL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD704JRZ-16-REEL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AD704JRZ-16-REEL?

AD704JRZ-16-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AD704JRZ-16-REEL 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 AD704JRZ-16-REEL?

For technical support, including AD704JRZ-16-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD704JRZ-16-REEL requirements.

6.How does Aetrix verify that AD704JRZ-16-REEL is sourced from the original manufacturer or authorized distributors?

All AD704JRZ-16-REEL 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 AD704JRZ-16-REEL meets industry standards.

7.What is the process for return or replacement of AD704JRZ-16-REEL?

All AD704JRZ-16-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD704JRZ-16-REEL, 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 AD704JRZ-16-REEL part is unused and in its original packaging.

Return procedure for AD704JRZ-16-REEL:

1.Submit a request within 90 days.

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

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