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Analog Devices Inc. AD8529ARZ
- Part No.:
- AD8529ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8529ARZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,765
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Product details
Overview
AD8529ARZ from Analog Devices is a dual rail-to-rail output operational amplifier optimized for precision, low-power, single-supply operation across −40°C to +125°C. It delivers 8 MHz gain bandwidth, 2.9 V/μs slew rate, and ≤1.0 mV max offset voltage at 5 V supply - enabling high-fidelity signal conditioning in space-constrained battery-powered sensor interfaces and microphone preamps.
For engineers reviewing the AD8529ARZ datasheet, AD8529ARZ pinout, AD8529ARZ application, or AD8529ARZ equivalent, this page provides verified package mapping (8-lead SOIC), validated electrical parameters (GBP, VOS, SR, CMRR, PSRR), thermal specs, and real-world use cases including PC99-compliant microphone amplification and full-wave rectification.
Technical Context
The AD8529ARZ implements a bipolar input stage with rail-to-rail output swing, supporting true single-supply operation from 2.7 V to 12 V (or ±1.35 V to ±6 V). Its unity-gain stable architecture achieves 60° phase margin and 8 MHz bandwidth at 5 V, with input common-mode range extending to both rails (0 V to 4 V at 5 V supply).
It features low input bias current (300 nA typ), low noise (10 nV/√Hz at 1 kHz), and robust ESD protection (±2 kV HBM). The device maintains rail-to-rail output drive capability (±25 mA) while consuming only 600–1400 μA per amplifier across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8 MHz at 5 V - enables stable unity-gain buffer or 10× gain up to 800 kHz without peaking. |
| Input Offset Voltage | ≤1000 μV max at 25°C (−40°C to +125°C: ≤1100 μV) - supports precision DC-coupled sensor signal chains. |
| Slew Rate | 2.9 V/μs at 5 V - sufficient for 20 Hz–20 kHz audio preamp with <1.35 V/μs minimum requirement. |
| Supply Current per Amplifier | 600–1400 μA - allows dual op amp operation on coin-cell or two-AA battery for >1 year standby. |
| Output Voltage Swing | Within 80 mV of V− and 100 mV of V+ at 5 mA load - maximizes dynamic range in 3.3 V ADC front-ends. |
| Common-Mode Rejection Ratio | ≥63 dB (min) over full temp range - rejects supply ripple and shared-noise coupling in mixed-signal PCBs. |
| Power Supply Rejection Ratio | ≥80 dB (min) over −40°C to +125°C - maintains accuracy under noisy or unregulated 3.3 V/5 V rails. |
Pinout & Package
AD8529ARZ is packaged in an 8-lead SOIC_N (R-8) surface-mount package, 4.90 mm × 3.90 mm × 1.75 mm, RoHS-compliant, rated for −40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±25 mA with rail-to-rail swing. |
| 2 | −IN A | Inverting input of Amplifier A - high-impedance node (300 nA bias current) for feedback networks. |
| 3 | +IN A | Non-inverting input of Amplifier A - accepts common-mode voltages from V− to V+ − 1 V. |
| 4 | V− | Negative supply rail - connects to ground in single-supply systems or negative rail in split-supply designs. |
| 5 | +IN B | Non-inverting input of Amplifier B - electrically isolated from Amplifier A; shares same V− and V+. |
| 6 | −IN B | Inverting input of Amplifier B - independent high-impedance node for second signal path. |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; supports dual-channel configurations. |
| 8 | V+ | Positive supply rail - operates from 2.7 V to 12 V (or ±1.35 V to ±6 V); decoupling required within 1 cm. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 0 V to V+ − 100 mV and V− + 80 mV range at 5 mA, maximizing ADC utilization in 3.3 V systems. |
| Low 1.0 mV max offset voltage | Enables DC-accurate amplification of µV-level sensor outputs (e.g., bridge transducers) without calibration. |
| 8 MHz bandwidth at unity gain | Supports fast-settling active filters, anti-aliasing stages, and wideband microphone preamps meeting PC99 spec. |
| 2.9 V/μs slew rate | Prevents slew-induced distortion in 20 Hz–20 kHz audio paths and eliminates glitches in precision rectifier topologies. |
| Extended industrial temperature range | Guaranteed operation from −40°C to +125°C - suitable for automotive cabin sensors and industrial motor control feedback. |
Applications
| Microphone Preamplifier | Sensor Interface |
|---|---|
Use Scenario: 10× gain stage for electret condenser microphones in portable phones and wearables, compliant with PC99 THD+N and dynamic range requirements. IC Role / Device Role / Timing Role: Dual op amp configured as AC-coupled non-inverting amplifier (A channel) and reference buffer (B channel) for codec line-in interface. Use Value: 2.9 V/μs slew rate prevents clipping at 20 kHz; rail-to-rail output ensures full 3.3 V ADC range utilization; 600 μA quiescent current extends battery life. |
Use Scenario: Signal conditioning for resistive bridge sensors (pressure, flow, strain) in industrial monitoring and automotive subsystems. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end using one AD8529ARZ amplifier per bridge leg, with rail-to-rail output driving long cables or ADC inputs. Use Value: ≤1.0 mV offset minimizes zero-error drift; 8 MHz GBP supports fast step response; low bias current avoids loading high-impedance bridges. |
| Precision Full-Wave Rectifier | Battery-Powered Active Filter |
Use Scenario: High-accuracy AC-to-DC conversion in medical instrumentation and energy metering, where switching glitches must be suppressed. IC Role / Device Role / Timing Role: Dual op amp implementing precision full-wave rectifier topology - one amplifier as inverter/buffer, second as summing stage. Use Value: 2.9 V/μs slew rate eliminates diode-switching transients; low offset preserves DC accuracy; rail-to-rail swing accommodates full input amplitude. |
Use Scenario: 2nd-order Sallen-Key low-pass filter in portable data loggers, rejecting RF interference while preserving sensor bandwidth. IC Role / Device Role / Timing Role: Dual op amp used as unity-gain buffer (input) and active filter core (output), sharing same supply and layout. Use Value: 8 MHz GBP enables cutoff frequencies up to 100 kHz; 600 μA per amplifier allows continuous operation on CR2032 coin cell for >6 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02 μV/°C offset drift vs. AD8529ARZ's 2 μV/°C; higher 350 μA supply current. | Better for ultra-low-drift DC measurement; less suitable for audio due to 350 kHz GBP and higher noise. | Select OPA2333AIDR when sub-μV offset stability over temperature is critical; AD8529ARZ preferred for bandwidth-sensitive audio/sensor apps. |
| MCP6022-I/SN | CMOS input (1 pA bias current vs. 300 nA); lower 170 μA supply current; 10 MHz GBP but only 1.2 V/μs slew rate. | Superior for high-impedance pH or photodiode sensors; insufficient slew for PC99-compliant 20 kHz preamps. | Choose MCP6022-I/SN for nanoamp-input sensor nodes; AD8529ARZ remains optimal where speed, output drive, and rail-to-rail swing are jointly required. |
Compared with OPA2333AIDR and MCP6022-I/SN, AD8529ARZ uniquely balances 8 MHz bandwidth, 2.9 V/μs slew rate, rail-to-rail output, and sub-mV offset in a dual SOIC package - making it the most versatile choice for mixed-signal battery-powered systems requiring both precision and speed.
Availability
AD8529ARZ is available at Aetrix Electronics and suitable for portable communications, sensor interface circuits, and battery-powered active filters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8529ARZ 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.
The AD8519/AD8529 product line was engineered for precision, low-power, rail-to-rail signal conditioning in space-constrained, battery-operated systems - targeting microphone preamps, sensor front-ends, and portable medical devices.
FAQ
What is the maximum operating temperature range for the AD8529ARZ?
The AD8529ARZ is specified for continuous operation from −40°C to +125°C, with guaranteed performance across this extended industrial temperature range. Electrical characteristics including offset voltage, CMRR, and supply current remain validated per Table 1 through Table 4 of the Rev. D datasheet under these conditions, making AD8529ARZ suitable for under-hood automotive and industrial control environments.
Does the AD8529ARZ support true single-supply operation?
Yes, the AD8529ARZ supports true single-supply operation from 2.7 V to 12 V. Its input common-mode range extends from V− to V+ − 1 V, and its rail-to-rail output swings within 80 mV of V− and 100 mV of V+ at 5 mA load - enabling direct interfacing with 3.3 V or 5 V ADCs without level-shifting circuitry. This is confirmed in the General Description and Electrical Characteristics sections of the AD8519/AD8529 Rev. D datasheet.
What package type is used for the AD8529ARZ?
The AD8529ARZ uses an 8-lead SOIC_N (R-8) package, measuring 4.90 mm × 3.90 mm × 1.75 mm, with gull-wing leads and RoHS-compliant finish. This is explicitly stated in the Ordering Guide (page 15) and Outline Dimensions (Figure 26) of the AD8519/AD8529 Rev. D datasheet, and confirmed by the "R" suffix in the part number per Analog Devices' packaging nomenclature.
Can the AD8529ARZ drive capacitive loads without instability?
The AD8529ARZ is unity-gain stable but exhibits increasing overshoot with capacitive loads above ~50 pF, as shown in Figure 13 of the Rev. D datasheet. For loads >100 pF, external isolation (e.g., series resistor between output and capacitor) is recommended. The device maintains stability up to 100 pF with ≤15% overshoot at 5 V supply, making it suitable for driving ADC input capacitors and short PCB traces without compensation.
Is the AD8529ARZ pin-compatible with other dual op amps in SOIC-8 packages?
No documented pin-compatible replacements are listed in the AD8519/AD8529 datasheet or Analog Devices cross-reference tools. While the pinout matches standard dual op amp SOIC-8 conventions (OUT A, −IN A, +IN A, V−, +IN B, −IN B, OUT B, V+), functional equivalence requires verification of bandwidth, offset, slew rate, and rail-to-rail behavior - as demonstrated by the alternative parts OPA2333AIDR and MCP6022-I/SN, which differ significantly in key parameters despite identical footprint.
AD8529ARZ 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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.9V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 600µA (x2 Channels)
- Current - Output / Channel:
- 25 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
AD8529ARZ FAQ
1.How can I place an order for AD8529ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8529ARZ 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 AD8529ARZ reliable?
The price and inventory of AD8529ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8529ARZ is usually 5 days.
3.What payment methods are accepted for AD8529ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8529ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8529ARZ?
AD8529ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8529ARZ 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 AD8529ARZ?
For technical support, including AD8529ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8529ARZ requirements.
6.How does Aetrix verify that AD8529ARZ is sourced from the original manufacturer or authorized distributors?
All AD8529ARZ 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 AD8529ARZ meets industry standards.
7.What is the process for return or replacement of AD8529ARZ?
All AD8529ARZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8529ARZ, 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 AD8529ARZ part is unused and in its original packaging.
Return procedure for AD8529ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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