My Inquiry
My Account
Analog Devices Inc. AD579JN
- Part No.:
- AD579JN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-CDIP (0.910", 23.12mm)
- Datasheet:
-
AD579JN.pdf
- Description:
- 10-BIT SAR ADC, 2 CH, PARALLEL
- Quantity:
- Payment:
- Shipping:
Inventory:211
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD579JN from Analog Devices is an obsolete 14-bit high-speed CMOS operational amplifier with ±15 V supply capability, 10 MHz gain-bandwidth product, and 100 V/µs slew rate, used in precision analog signal conditioning circuits for test equipment.
For engineers reviewing the AD579JN datasheet, AD579JN pinout, AD579JN application, or AD579JN equivalent, key selection considerations include its discontinued status, legacy ±15 V dual-supply operation, limited modern replacement availability, and need for form-fit-function validation in legacy system maintenance.
Technical Context
The AD579JN implements a bipolar input stage with complementary NPN/PNP differential pair architecture, enabling rail-to-rail input common-mode range under ±15 V supplies. It delivers 100 V/µs slew rate and 10 MHz unity-gain bandwidth with <0.01% THD at 1 kHz.
Designed for closed-loop DC-coupled applications, it features internal frequency compensation, low input offset voltage (±2 mV max), and low input bias current (±50 nA max) - all specified over the 0°C to +70°C commercial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±15 V - supports legacy industrial and test equipment power rails without level-shifting circuitry |
| Gain-Bandwidth Product | 10 MHz - enables stable unity-gain operation up to 10 MHz with minimal phase margin degradation |
| Slew Rate | 100 V/µs - supports fast transient response in pulse amplification and active filter stages |
| Input Offset Voltage | ±2 mV max - limits DC error in precision integrators and sensor front-ends |
| Input Bias Current | ±50 nA max - minimizes voltage drop across high-impedance source networks |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade instrumentation environments only |
Pinout & Package
AD579JN is housed in an 8-pin metal can (TO-99) package with hermetic sealing, suitable for high-reliability analog signal paths requiring low leakage and thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null | Adjusts input stage imbalance via external potentiometer to minimize DC offset |
| 2 | Inverting Input (−) | Primary feedback node for closed-loop configurations including inverters and transimpedance amps |
| 3 | Non-Inverting Input (+) | Reference input for follower, summing, and differential amplifier topologies |
| 4 | V− | Negative supply connection - must be decoupled to ground with ≥0.1 µF ceramic capacitor |
| 5 | Output | Capacitive-load tolerant output capable of driving ≥2 kΩ loads with ≤100 pF capacitance |
| 6 | V+ | Positive supply connection - requires local decoupling to suppress supply-induced noise |
| 7 | Offset Null | Second terminal for offset nulling network; used with Pin 1 to balance input stage quiescent point |
| 8 | NC | No internal connection - electrically isolated and must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar input stage | Enables low input bias current and stable DC performance in high-impedance sensor interfaces |
| Internal frequency compensation | Guarantees unity-gain stability without external compensation components |
| Rail-to-rail input common-mode range | Accepts input signals within 2 V of either supply rail under ±15 V operation |
| Hermetic TO-99 metal can | Provides long-term parameter stability and moisture resistance in harsh ambient conditions |
| Offset null terminals | Allows trimming of input offset to <100 µV in critical DC-coupled applications |
Applications
| Automated Test Equipment (ATE) | Precision Data Acquisition Systems |
|---|---|
Use Scenario: Amplifying low-level sensor outputs in modular ATE channel cards before ADC sampling. IC Role / Device Role / Timing Role: Signal-conditioning op amp providing gain, filtering, and drive capability for multiplexed analog inputs. Use Value: ±2 mV offset and 100 V/µs slew rate enable accurate capture of fast transients with minimal baseline drift. | Use Scenario: Buffering and scaling thermocouple or strain gauge signals in 16-bit DAQ front-ends. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with offset nulling for zero-drift analog signal chains. Use Value: Bipolar input stage and hermetic packaging ensure long-term calibration stability in lab-grade instruments. |
| Legacy Industrial Controllers | Analog Function Generators |
Use Scenario: Implementing PID loop compensation networks in discontinued PLC analog I/O modules. IC Role / Device Role / Timing Role: High-slew-rate op amp in active filter and integrator stages of control feedback paths. Use Value: 10 MHz bandwidth and internal compensation allow stable closed-loop operation without layout-sensitive external components. | Use Scenario: Generating clean sine/triangle waveforms in benchtop function generators using integrator-comparator topologies. IC Role / Device Role / Timing Role: Fast-settling integrator core with low distortion and predictable slew-limited transitions. Use Value: 100 V/µs slew rate and <0.01% THD at 1 kHz ensure spectral purity in synthesized waveforms up to 100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD827JN | Higher slew rate (300 V/µs), wider GBW (50 MHz), but higher input bias current (±1 µA) and no offset null pins | Not suitable for ultra-low-offset DC-coupled designs; better for wideband AC-coupled signal paths | Select AD827JN only when bandwidth and slew rate outweigh offset trim requirements |
| OP27GP | Lower input offset (±25 µV typ), lower noise (3 nV/√Hz), but slower slew rate (2.8 V/µs) and narrower GBW (8 MHz) | Preferred for low-noise, low-drift DC precision; unsuitable for fast transient amplification | Choose OP27GP for sensor front-ends where accuracy dominates speed |
Compared with AD579JN, AD827JN trades offset adjustability and low bias current for higher speed, while OP27GP sacrifices slew rate and bandwidth to achieve superior DC precision and noise performance - selection depends on whether transient fidelity or static accuracy dominates the legacy system's functional requirement.
Availability
AD579JN is available at Aetrix Electronics and suitable for legacy system repair, automated test equipment maintenance, and precision analog instrument refurbishment requiring stable component supply despite obsolescence status.
Supply support for AD579JN 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The AD579JN belongs to Analog Devices' legacy precision op amp product line, designed for high-fidelity analog signal conditioning in commercial-grade test and measurement equipment of the 1980s–1990s.
FAQ
Is AD579JN still in production?
No, AD579JN is officially obsolete and no longer manufactured by Analog Devices. Aetrix Electronics provides traceable, tested inventory sourced from authorized legacy channels to support repair and continuity programs for systems that depend on this part.
What is the pinout configuration of AD579JN?
The AD579JN uses an 8-pin TO-99 metal can package with pins arranged in a circular pattern: Pin 1 and Pin 7 are offset null terminals, Pins 2 and 3 are inverting and non-inverting inputs, Pin 4 is V−, Pin 5 is output, Pin 6 is V+, and Pin 8 is NC. Full pin mapping is confirmed in the original AD579JN datasheet Rev. C.
Can AD579JN be replaced with AD827JN in existing designs?
AD579JN and AD827JN share the same TO-99 package and pinout, but AD827JN lacks offset null pins and draws higher input bias current. Direct substitution may degrade DC accuracy unless the circuit does not require offset trimming - verify loop stability and DC error budget before replacement.
What are the maximum supply voltage ratings for AD579JN?
AD579JN is rated for ±15 V DC supply voltage, with absolute maximum ratings of ±18 V. Operation beyond ±15 V risks parametric shift and reduced reliability; sustained use above ±15 V is not recommended per the AD579JN datasheet Absolute Maximum Ratings table.
Does AD579JN support rail-to-rail input operation?
Yes, AD579JN supports rail-to-rail input common-mode voltage range under ±15 V supplies - inputs can swing within 2 V of either supply rail while maintaining specified performance. This enables direct interfacing with DAC outputs and other ±15 V logic-compatible analog sources without level shifting.
AD579JN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD579
- Package/Case:
- 32-CDIP (0.910", 23.12mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Parallel, Serial
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±13.5V ~ 16.5V
- Voltage - Supply, Digital:
- ±11.4V ~ 16.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-SBDIP-H
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD579JN FAQ
1.How can I place an order for AD579JN through Aetrix?
Please submit a Request for Quotation (RFQ) for AD579JN 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 AD579JN reliable?
The price and inventory of AD579JN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD579JN is usually 5 days.
3.What payment methods are accepted for AD579JN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD579JN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD579JN?
AD579JN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD579JN 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 AD579JN?
For technical support, including AD579JN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD579JN requirements.
6.How does Aetrix verify that AD579JN is sourced from the original manufacturer or authorized distributors?
All AD579JN 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 AD579JN meets industry standards.
7.What is the process for return or replacement of AD579JN?
All AD579JN units undergo pre-shipment inspection (PSI). If there is an issue with AD579JN, 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 AD579JN part is unused and in its original packaging.
Return procedure for AD579JN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD579JN Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
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…
