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Analog Devices Inc. AD8529ARMZ-REEL
- Part No.:
- AD8529ARMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8529ARMZ-REEL.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,604
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Product details
Overview
AD8529ARMZ-REEL from Analog Devices is a dual, rail-to-rail output operational amplifier in an 8-lead MSOP package, delivering 8 MHz gain bandwidth, 2.9 V/μs slew rate, and 1.2 mV max input offset voltage at 5 V supply. It operates from 2.7 V to 12 V single supply or ±1.5 V to ±6 V dual supply, and is specified over −40°C to +125°C for industrial sensor interface and portable audio preamplifier applications.
For engineers reviewing the AD8529ARMZ-REEL datasheet, AD8529ARMZ-REEL pinout, AD8529ARMZ-REEL application, or AD8529ARMZ-REEL equivalent, key selection criteria include rail-to-rail output swing (≤100 mV from rail at 250 μA), low quiescent current (600–1400 μA per amplifier), CMRR ≥70 dB, PSRR ≥80 dB, and unity-gain stability without external compensation.
Technical Context
The AD8529ARMZ-REEL implements a bipolar input stage with rail-to-rail output stage, enabling full dynamic range utilization in low-voltage systems. Its 8 MHz GBP and 60° phase margin ensure stable operation under capacitive loads up to 100 pF, while the 2.9 V/μs slew rate supports fast settling (1200 ns to 0.01%) in precision active filters and microphone preamps.
Designed for high-precision, low-power signal conditioning, it features matched input bias currents (±50 nA typ), low voltage noise density (10 nV/√Hz at 1 kHz), and minimal offset drift (2 μV/°C), making it suitable for bridge sensor amplification and ASIC input driving where DC accuracy and AC fidelity are co-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8 MHz - enables stable unity-gain operation and supports closed-loop bandwidths up to ~7.5 MHz with minimal peaking. |
| Slew Rate | 2.9 V/μs - ensures <1200 ns settling to 0.01% for 1 V step, critical for audio preamp transient fidelity and active filter linearity. |
| Input Offset Voltage | 1.2 mV max (−40°C to +125°C) - maintains ≤12 mV error in 10× gain sensor interfaces across full temperature range. |
| Supply Current per Amplifier | 600–1400 μA - allows dual-channel operation on coin-cell or two-AA battery supplies for >1-year portable device runtime. |
| Rail-to-Rail Output Swing | ≤100 mV from rail (IL = 250 μA) - delivers >4.9 Vpp output at 5 V supply, maximizing SNR in ADC driver and reference buffer roles. |
| Common-Mode Rejection Ratio | ≥70 dB (−40°C to +125°C) - suppresses supply ripple and shared-noise coupling in single-supply mixed-signal PCB layouts. |
| Operating Temperature Range | −40°C to +125°C - qualified for under-hood automotive sensors, industrial motor controllers, and wearable medical monitors. |
Pinout & Package
AD8529ARMZ-REEL is housed in an 8-lead MSOP (RM-8) package, 3.0 mm × 3.0 mm × 0.85 mm body, with exposed pad for thermal enhancement. Pin 1 marked via laser trim or dot; lead finish is Pb-free (RoHS compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±25 mA; rail-to-rail swing enables direct connection to SAR ADC inputs or low-VGS MOSFET gates. |
| 2 | −IN A | Inverting input of Amp A - high-impedance node; requires matched trace routing to minimize common-mode error in differential configurations. |
| 3 | +IN A | Non-inverting input of Amp A - referenced to system ground or virtual ground; sensitive to EMI pickup due to high ZIN. |
| 4 | V− | Negative supply rail - connects to GND in single-supply mode; must be decoupled with 0.1 μF ceramic capacitor within 2 mm of pin. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from Amp A; supports independent sensor channel conditioning on same die. |
| 6 | −IN B | Inverting input of Amp B - shares no internal nodes with Amp A; enables true dual-channel operation without crosstalk. |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; allows simultaneous processing of two analog signals (e.g., stereo mic preamp). |
| 8 | V+ | Positive supply rail - accepts 2.7–12 V single supply or +VS in dual-supply mode; PSRR ≥80 dB reduces sensitivity to supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >98% of supply rail-to-rail voltage range at 250 μA load, preserving dynamic range in 3.3 V and lower systems. |
| Unity-gain stable | Operates without external compensation components, reducing BOM count and PCB area in gain-of-1 buffers and active filters. |
| Low input offset drift | 2 μV/°C max ensures <250 μV total offset shift over −40°C to +125°C, critical for uncalibrated industrial temperature sensing. |
| High PSRR and CMRR | ≥80 dB PSRR and ≥70 dB CMRR maintain signal integrity in noisy environments like motor drive feedback loops or USB-powered devices. |
| Extended temperature grade | Qualified from −40°C to +125°C per AEC-Q200 stress test conditions, supporting deployment in automotive cabin and engine bay modules. |
Applications
| Microphone Preamplifier | Sensor Interface |
|---|---|
Use Scenario: 10× gain stage for electret condenser microphones in portable phones and wearables, meeting PC99 THD+N and dynamic range specs. IC Role / Device Role / Timing Role: Dual op-amp configured as single-ended preamp (A) and reference buffer (B), providing rail-to-rail output swing and low noise floor (10 nV/√Hz). Use Value: Enables 20-bit audio performance at 2.7 V supply with <100 dB output noise, eliminating need for discrete gain staging or external LDO filtering. |
Use Scenario: Signal conditioning for resistive bridge sensors (e.g., pressure transducers) requiring high DC accuracy and wide bandwidth. IC Role / Device Role / Timing Role: Dual amplifier implementing two-element varying bridge topology with matched offset and rail-to-rail output for full-scale ADC utilization. Use Value: Delivers 2× signal gain vs. single-element bridges while maintaining <1.2 mV offset error across temperature, reducing calibration overhead. |
| Active Filter | Voltage Reference Buffer |
Use Scenario: 2nd-order Sallen-Key low-pass filter in battery-powered data loggers, rejecting RF interference above 20 kHz while preserving sensor DC response. IC Role / Device Role / Timing Role: Unity-gain stable amplifier configured as filter integrator with 8 MHz GBP and 2.9 V/μs slew rate ensuring linear phase response. Use Value: Achieves <0.1 dB passband ripple and −40 dB stopband attenuation at 100 kHz without external compensation or layout tuning. |
Use Scenario: Low-noise, high-PSRR buffer for precision voltage references (e.g., REF195) driving multiple ADCs or DACs in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Non-inverting buffer (A) with 100 dB PSRR isolating reference from digital switching noise; Amp B unused or repurposed for diagnostics. Use Value: Maintains reference stability to ±0.01% under 10 mA load transients, preventing ADC code flicker and improving measurement repeatability. |
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 |
|---|---|---|---|
| OPA2314AIDR | Lower quiescent current (150 μA vs. 600 μA), but reduced GBW (3 MHz) and slew rate (1.5 V/μs); CMRR 85 dB (typ). | Better suited for ultra-low-power always-on sensor nodes where bandwidth <1 MHz suffices; less ideal for audio or fast-settling filters. | Select OPA2314AIDR when battery life dominates over AC performance; verify loop stability with capacitive loads >50 pF. |
| MCP6022-I/SN | Higher input offset (2.5 mV max), wider supply range (2.7–6.0 V), but lower noise (11.5 nV/√Hz) and same 10 MHz GBW. | Preferred for cost-sensitive consumer electronics with relaxed DC specs; not qualified for extended temperature operation beyond +85°C. | Choose MCP6022-I/SN for commercial-grade designs below +85°C; avoid in automotive or industrial environments requiring −40°C startup. |
Compared with OPA2314AIDR and MCP6022-I/SN, AD8529ARMZ-REEL uniquely balances 8 MHz bandwidth, 2.9 V/μs slew rate, 1.2 mV offset, and −40°C to +125°C qualification-making it the only option among the three capable of simultaneously meeting precision, speed, and ruggedness requirements in automotive sensor modules.
Availability
AD8529ARMZ-REEL is available at Aetrix Electronics and suitable for industrial sensor interface, portable audio preamplifier, and active filter applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8529ARMZ-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, founded in 1965 and headquartered in Wilmington, MA.
The AD8529ARMZ-REEL belongs to Analog Devices' precision rail-to-rail op amp product line, engineered specifically for low-voltage, high-accuracy signal conditioning in battery-powered and thermally demanding environments.
FAQ
What is the maximum operating supply voltage for AD8529ARMZ-REEL?
The AD8529ARMZ-REEL supports a maximum supply voltage of ±6 V (12 V total) in dual-supply mode or 12 V in single-supply configuration. Absolute maximum ratings specify ±6 V on V+ and V− pins; exceeding this risks permanent damage. For reliable operation, Analog Devices recommends staying within 2.7 V to 12 V single supply or ±1.5 V to ±6 V dual supply per the datasheet's Electrical Characteristics tables.
Does AD8529ARMZ-REEL require external compensation for unity-gain stability?
No, AD8529ARMZ-REEL is internally compensated and unity-gain stable across its full operating range. The datasheet confirms 60° phase margin at unity gain with 10 kΩ load and 100 pF capacitance, eliminating the need for external compensation networks. This simplifies design in buffer, follower, and active filter configurations without risking oscillation.
What is the typical input bias current of AD8529ARMZ-REEL at 25°C?
The typical input bias current of AD8529ARMZ-REEL is 300 nA at 25°C, with a maximum of 400 nA over the full −40°C to +125°C temperature range. This value applies to both amplifiers and is consistent across supply voltages from 2.7 V to 12 V, enabling accurate high-impedance source interfacing without significant DC error from bias current flow.
Can AD8529ARMZ-REEL drive capacitive loads up to 100 pF without instability?
Yes, AD8529ARMZ-REEL maintains stability with capacitive loads up to 100 pF, as verified by Figure 21 (Small Signal Transient Response) and Figure 13 (Overshoot vs. Capacitance Load) in the Rev. D datasheet. At 100 pF and 10 kΩ load, overshoot remains <5% and settling time stays within 1200 ns to 0.01%, confirming robust phase margin under real-world PCB trace and ADC input capacitance conditions.
Is AD8529ARMZ-REEL RoHS compliant and lead-free?
Yes, AD8529ARMZ-REEL is RoHS compliant and lead-free. The "Z" suffix in the part number explicitly denotes RoHS compliance per the Ordering Guide on page 15 of the Rev. D datasheet, and the MSOP package uses matte tin lead finish. Full compliance documentation, including substance declarations and test reports, is available through Analog Devices' official product page and authorized distributors.
AD8529ARMZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-MSOP
AD8529ARMZ-REEL FAQ
1.How can I place an order for AD8529ARMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8529ARMZ-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 AD8529ARMZ-REEL reliable?
The price and inventory of AD8529ARMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8529ARMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8529ARMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8529ARMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8529ARMZ-REEL?
AD8529ARMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8529ARMZ-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 AD8529ARMZ-REEL?
For technical support, including AD8529ARMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8529ARMZ-REEL requirements.
6.How does Aetrix verify that AD8529ARMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8529ARMZ-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 AD8529ARMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8529ARMZ-REEL?
All AD8529ARMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8529ARMZ-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 AD8529ARMZ-REEL part is unused and in its original packaging.
Return procedure for AD8529ARMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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