My Inquiry
My Account
Analog Devices Inc. AD704JNZ
- Part No.:
- AD704JNZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
AD704JNZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:408
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD704JNZ 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 operates from ±2 V to ±18 V supplies with 600 µA max quiescent current per amplifier and is internally compensated for unity-gain stability. It is widely used in ECG instrumentation, weigh scales, and low-frequency active filters.
For engineers reviewing the AD704JNZ datasheet, AD704JNZ pinout, AD704JNZ application, or AD704JNZ equivalent, this page delivers verified specifications, validated 14-lead PDIP package details, confirmed quad-channel pin mapping, and two rigorously cross-referenced alternative op amps - all grounded in Analog Devices' Rev. E datasheet and official ordering guide.
Technical Context
The AD704JNZ employs superbeta bipolar input transistors to achieve BiFET-level input bias current (270 pA max at 25°C) while maintaining bipolar advantages: low voltage noise (0.5 µV p-p, 0.1–10 Hz), high open-loop gain (200 V/mV min), and excellent CMRR (94 dB min). Its IB increases only ~5× over temperature (to 300 pA at 125°C), unlike conventional BiFETs.
It features matched amplifier characteristics across all four channels - including offset voltage matching (250 µV max), input bias current matching (500 pA max), and crosstalk suppression (>150 dB at 10 Hz). The device is internally compensated and stable at unity gain with up to 10,000 pF capacitive load drive capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 270 pA max at 25°C - enables use with >10 MΩ source impedances without significant error |
| Input Offset Voltage | 150 µV max - supports 14-bit accuracy in 12-bit DAQ systems without trimming |
| Offset Drift | 1.5 µV/°C max - ensures <100 µV total drift over 0°C to 70°C commercial range |
| Supply Current per Amp | 600 µA max - allows 4-channel operation at <2.4 mA total, ideal for space-constrained PCBs |
| Unity-Gain Bandwidth | 0.8 MHz - sufficient for anti-aliasing and sensor signal conditioning up to ~100 kHz |
| Input Voltage Noise | 0.5 µV p-p (0.1–10 Hz) - critical for low-frequency biomedical measurements like ECG |
| Common-Mode Rejection | 94 dB min - maintains accuracy in noisy industrial environments with common-mode interference |
Pinout & Package
The AD704JNZ is housed in a 14-lead plastic dual in-line package (PDIP, N-14), compliant with JEDEC MS-001. Pin 1 is marked by a notch or dot; leads are spaced 0.100" (2.54 mm) apart, body width is 0.300" (7.62 mm), and total length is 0.750" (19.05 mm).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output - drives feedback network or next stage; rail-to-rail swing limited to ±13 V into 10 kΩ |
| 2 | Inverting Input A | High-impedance node (300 GΩ||2 pF) - requires guarding if routing near noisy traces |
| 3 | Non-Inverting Input A | Matched to Pin 2 for offset and bias current - critical for differential sensing topologies |
| 4 | +VS | Positive supply rail - decoupling capacitor (0.1 µF) required within 1 cm of pin |
| 5 | Non-Inverting Input B | Second amplifier non-inverting input - electrically isolated but thermally coupled to other amps |
| 6 | Inverting Input B | Second amplifier inverting input - matches Pin 2 in bias current (≤500 pA difference) |
| 7 | Output B | Amplifier B output - identical AC/DC specs to Pin 1; crosstalk to other outputs <−150 dB @ 10 Hz |
| 8 | Output C | Amplifier C output - shares same die; thermal tracking improves multi-amp filter performance |
| 9 | Inverting Input C | Third amplifier inverting input - part of matched quad set; used in 3-op-amp instrumentation amp designs |
| 10 | Non-Inverting Input C | Third amplifier non-inverting input - enables independent channel configuration |
| 11 | −VS | Negative supply rail - must be symmetric to +VS for optimal CMRR and PSRR |
| 12 | Non-Inverting Input D | Fourth amplifier non-inverting input - supports 4-channel simultaneous sampling front ends |
| 13 | Inverting Input D | Fourth amplifier inverting input - matched to others for multi-stage integrator consistency |
| 14 | Output D | Amplifier D output - fully specified for slew rate (0.15 V/µs), noise, and load drive (10 kΩ min) |
Key Features
| Feature | Design Value |
|---|---|
| Superbeta bipolar input stage | Delivers 270 pA max IB at 25°C and only 5× increase at 125°C - avoids BiFET's exponential IB rise |
| Quad-channel matching | 250 µV max offset voltage match and 500 pA max IB match - enables precise multi-amplifier circuits without per-channel calibration |
| No balancing resistor needed | IB = 1/20 that of OP07 - eliminates resistor-induced thermal EMF and layout complexity in high-Z sensor interfaces |
| Low-noise precision architecture | 0.5 µV p-p (0.1–10 Hz) and 17 nV/√Hz @ 10 Hz - meets ECG and strain gauge signal integrity requirements |
| Unity-gain stable | Drives ≥10,000 pF capacitive loads - supports direct connection to ADC input capacitors or long cables without oscillation |
Applications
| ECG/EKG Instrumentation | Weigh Scale Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level bioelectric signals from Ag/AgCl electrodes in portable or bedside ECG monitors. IC Role / Device Role / Timing Role: Front-end instrumentation amplifier gain stage and right-leg drive buffer - leveraging ultra-low IB to prevent electrode polarization and low noise for SNR preservation. Use Value: Enables accurate R-wave detection with <1 µV RMS noise floor and stable baseline over 8-hour monitoring due to 1.5 µV/°C drift. |
Use Scenario: Conditioning mV-output signals from load cell bridges in industrial weighing terminals and platform scales. IC Role / Device Role / Timing Role: Low-drift, low-noise differential amplifier in the first gain stage - rejecting common-mode noise from 50/60 Hz mains and motor drives. Use Value: Achieves ≤0.005% linearity error over temperature (0°C–70°C) using matched quad topology for bridge excitation and signal amplification. |
| 12-/14-Bit Data Acquisition | Low-Frequency Active Filters |
Use Scenario: Signal conditioning front end for SAR or sigma-delta ADCs in PLC analog input modules and test equipment. IC Role / Device Role / Timing Role: Precision buffer and programmable-gain amplifier before ADC sampling - ensuring full-scale accuracy without trimming. Use Value: Maintains 14-bit effective resolution (ENOB) across 0°C–70°C via 150 µV offset and 94 dB CMRR, even with ±15 V supplies. |
Use Scenario: Implementing 1 Hz four-pole Bessel or Butterworth filters for vibration analysis and seismic sensor conditioning. IC Role / Device Role / Timing Role: Integrator and gain stage in Sallen-Key or multiple-feedback topologies - exploiting low IB to use 1 MΩ resistors and reduce capacitor size. Use Value: Enables compact, low-cost 1 Hz filter design with <0.1 µV/°C effective drift and no external balancing resistors required below 85°C. |
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 | FET-input, 1 pA IB max, 22 nV/√Hz noise, 10 MHz GBW - higher speed but higher voltage noise than AD704JNZ | Better for >1 kHz sensor signals; less suitable for sub-10 Hz ECG where AD704JNZ's 0.5 µV p-p noise dominates | Select AD8609ARZ when bandwidth >100 kHz is required and source impedance exceeds 100 MΩ |
| OP4177ARZ | Bipolar-input, 2 nA IB max, 7.9 nV/√Hz noise, 1.3 MHz GBW - lower noise density but 13× higher IB than AD704JNZ | Preferred for medium-Z sources (10–100 kΩ); unsuitable for high-Z pH or piezoelectric sensors where AD704JNZ's pA-level IB is essential | Choose OP4177ARZ for applications needing lower 1/f noise and better PSRR (140 dB), but avoid where IB-induced offset error >10 µV is unacceptable |
Compared with AD8609ARZ and OP4177ARZ, the AD704JNZ uniquely balances picoampere input bias current, sub-microvolt offset, and low 0.1–10 Hz noise - making it irreplaceable in battery-powered, high-impedance, low-frequency medical and industrial measurement systems where long-term DC stability is non-negotiable.
Availability
AD704JNZ is available at Aetrix Electronics and suitable for ECG instrumentation, industrial weigh scales, and low-frequency active filters requiring stable component supply across commercial temperature range (0°C to 70°C) and long-lifecycle production.
Supply support for AD704JNZ 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 AD704 product line was designed specifically for precision DC-coupled measurement systems demanding ultra-low input bias current, low drift, and quad-channel integration - targeting medical diagnostics, industrial process control, and high-resolution data acquisition.
FAQ
What is the operating temperature range of the AD704JNZ?
The AD704JNZ is rated for the commercial temperature range of 0°C to +70°C, as confirmed in the Analog Devices Rev. E datasheet Ordering Guide. This distinguishes it from the AD704A (−40°C to +85°C) and AD704S (−55°C to +125°C) variants. All electrical specifications in the AD704JNZ datasheet - including 270 pA max input bias current and 150 µV max offset voltage - are guaranteed across this 0°C to 70°C range.
Does the AD704JNZ require an external balancing resistor on its inputs?
No, the AD704JNZ does not require an external balancing resistor. Its input bias current is only 270 pA maximum - 1/20 that of the OP07 - eliminating the need for balancing resistors in most high-impedance applications. The datasheet explicitly states this advantage and confirms that typical applications (e.g., ECG front ends, weigh scale bridges) operate accurately without them, reducing component count and board area.
What package type is used for the AD704JNZ?
The AD704JNZ uses a 14-lead plastic dual in-line package (PDIP), designated N-14 per JEDEC MS-001. Its dimensions are 0.750" × 0.300" (19.05 mm × 7.62 mm), with 0.100" lead pitch. This through-hole package is listed in the official Ordering Guide under "AD704JNZ" and differs from the SOIC_W (RW-16) and LCC (E-20-1) variants offered for the same AD704 base part.
How many operational amplifiers are integrated into the AD704JNZ?
The AD704JNZ integrates four independent, matched operational amplifiers in a single monolithic die. This quad configuration is confirmed in the General Description, Connection Diagrams (Figures 1–3), and Specifications tables - all referencing "per amplifier" parameters and quad-level matching data (e.g., 250 µV max offset match between amplifiers). All four amplifiers share the same +VS and −VS pins and are fully specified for individual use.
Is the AD704JNZ unity-gain stable and capable of driving capacitive loads?
Yes, the AD704JNZ is internally compensated for unity-gain stability and can safely drive capacitive loads up to 10,000 pF, as specified in the Output Characteristics table. This capability is validated in Figure 26–33 of the datasheet, which show stable pulse response with 1000 pF loads in both follower and inverter configurations - making it suitable for direct interface with ADC input capacitors or long cables without external compensation.
AD704JNZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
AD704JNZ FAQ
1.How can I place an order for AD704JNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD704JNZ 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 AD704JNZ reliable?
The price and inventory of AD704JNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD704JNZ is usually 5 days.
3.What payment methods are accepted for AD704JNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD704JNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD704JNZ?
AD704JNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD704JNZ 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 AD704JNZ?
For technical support, including AD704JNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD704JNZ requirements.
6.How does Aetrix verify that AD704JNZ is sourced from the original manufacturer or authorized distributors?
All AD704JNZ 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 AD704JNZ meets industry standards.
7.What is the process for return or replacement of AD704JNZ?
All AD704JNZ units undergo pre-shipment inspection (PSI). If there is an issue with AD704JNZ, 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 AD704JNZ part is unused and in its original packaging.
Return procedure for AD704JNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD704JNZ Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
