Analog Devices

AD8512ARZ - Precision Low Noise JFET Op Amp | Analog Devices

Name: AD8512ARZ
Brand: Analog Devices
Price: 2.25 USD
Availability: InStock

MPN: AD8512ARZ ✓ Active

In Stock Ships in 1-3 business days

±5 V to ±15 V Vdss 1 pA (typical) Id 8-SOIC Package

From $2.25 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

Qty	Unit Price	Extended
1	$3.5	$3.50
10	$3.15	$31.50
100	$2.8	$280.00
500	$2.5	$1,250.00
1,000	$2.25	$2,250.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for AD8512ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

AD8512AR

✅ Drop-In

📦 8-SOIC

Non-lead-free version, same electrical specs

📋 Reference alternative (not in catalog)

AD8512ARZ-REEL

✅ Drop-In

📦 8-SOIC

Tape and reel packaging variant, same die

📋 Reference alternative (not in catalog)

OPA2188

✅ Drop-In

📦 8-SOIC

Lower bandwidth (2 MHz), higher bias current (0.9 mA), but pin-compatible

📋 Reference alternative (not in catalog)

AD8628

✅ Drop-In

📦 8-SOIC

Chopper-stabilized, lower offset (50 µV), but lower bandwidth (2 MHz)

📋 Reference alternative (not in catalog)

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

AD8512ARZ Maximum Ratings & Electrical Characteristics

Number of Channels	2
Amplifier Type	J-FET
Supply Voltage Range	±5 V to ±15 V
Input Offset Voltage	100 µV (typical)
Input Bias Current	1 pA (typical)
Input Voltage Noise	8 nV/√Hz (typical)
Input Current Noise	0.8 fA/√Hz (typical)
Gain Bandwidth Product	8 MHz
Slew Rate	20 V/µs
Output Current	20 mA (typical)
Operating Temperature Range	-40°C to +125°C
Package	8-SOIC
Mounting Type	Surface Mount
RoHS Status	Compliant
Lead Free	Yes

AD8512ARZ Pin Configuration

Pin 1	OUT A — Output of amplifier A
Pin 2	-IN A — Inverting input of amplifier A
Pin 3	+IN A — Non-inverting input of amplifier A
Pin 4	V- — Negative supply voltage
Pin 5	+IN B — Non-inverting input of amplifier B
Pin 6	-IN B — Inverting input of amplifier B
Pin 7	OUT B — Output of amplifier B
Pin 8	V+ — Positive supply voltage

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

AD8512ARZ is suitable for 6 applications: Precision Instrumentation, Active Filters, Data Acquisition Systems, Audio Preamplifiers, Photodiode Amplifiers, Sensor Signal Conditioning.

🔧

Precision Instrumentation

The AD8512ARZ's low offset voltage (100 µV) and low input bias current (1 pA) make it ideal for precision instrumentation amplifiers. It ensures accurate signal conditioning in measurement systems, such as strain gauge and thermocouple interfaces, where minimal DC error is critical. The device's low noise (8 nV/√Hz) preserves signal integrity in low-level measurements.

Recommended

🔧

Active Filters

With a gain bandwidth product of 8 MHz, the AD8512ARZ is well-suited for active filter designs, including low-pass, high-pass, and band-pass filters. Its high slew rate (20 V/µs) ensures minimal distortion in filter responses. The device's low noise and low offset contribute to accurate filter performance in audio and communication systems.

Recommended

AD9833BRUZ · Analog Devices

🖥️

Data Acquisition Systems

The AD8512ARZ is commonly used in data acquisition systems as a buffer or amplifier before an ADC. Its low input bias current minimizes errors when driving high-impedance sources, and its low noise ensures high signal-to-noise ratio. The device's wide supply range allows it to interface with various ADC reference voltages.

Recommended

AD7606BSTZ · Analog Devices AD7176-2BRUZ · Analog Devices

🎧

Audio Preamplifiers

The AD8512ARZ's low noise (8 nV/√Hz) and low distortion make it an excellent choice for audio preamplifiers. It can amplify low-level signals from microphones or pickups without introducing audible noise. The device's wide bandwidth and high slew rate preserve the audio signal's transient response, ensuring high-fidelity reproduction.

Recommended

AD9833BRUZ · Analog Devices

🔧

Photodiode Amplifiers

The AD8512ARZ's ultra-low input bias current (1 pA) is ideal for photodiode amplifier circuits, where the amplifier must not load the photodiode. The low current noise (0.8 fA/√Hz) ensures accurate detection of weak optical signals. The device's high gain bandwidth product allows for fast response in optical communication systems.

Recommended

AD7606BSTZ · Analog Devices

🧩

Sensor Signal Conditioning

The AD8512ARZ is well-suited for conditioning signals from various sensors, including temperature, pressure, and humidity sensors. Its low offset and bias current reduce errors in sensor interfaces, while its low noise ensures accurate measurement. The device's wide operating temperature range (-40°C to +125°C) makes it suitable for industrial sensor applications.

Recommended

AD7606BSTZ · Analog Devices

Recommended Products Summary

AD7606BSTZ Analog Devices Used in: Precision Instrumentation, Data Acquisition Systems, Photodiode Amplifiers, Sensor Signal Conditioning AD7176-2BRUZ Analog Devices Used in: Precision Instrumentation, Data Acquisition Systems AD9833BRUZ Analog Devices Used in: Active Filters, Audio Preamplifiers

What is the supply voltage range of AD8512ARZ?

The AD8512ARZ operates from a supply voltage range of ±5 V to ±15 V. According to the Analog Devices datasheet, the device is specified for dual supplies, but it can also be used with a single supply if the input common-mode range is respected. The wide supply range makes it versatile for various applications.

What is the input offset voltage of AD8512ARZ?

The AD8512ARZ has a typical input offset voltage of 100 µV. This low offset voltage is a key feature for precision applications, as it minimizes DC errors in signal conditioning circuits. The maximum offset voltage is not specified in the provided data, but the typical value is sufficient for most precision designs.

What is the input bias current of AD8512ARZ?

The AD8512ARZ has a typical input bias current of 1 pA. This extremely low bias current is due to the JFET input stage, making the device ideal for high-impedance sources such as photodiodes and sensors. The low bias current also reduces errors in transimpedance amplifiers and sample-and-hold circuits.

What is the gain bandwidth product of AD8512ARZ?

The AD8512ARZ has a gain bandwidth product of 8 MHz. This parameter indicates the frequency at which the open-loop gain drops to unity. With an 8 MHz bandwidth, the device is suitable for audio and moderate-speed signal processing applications. The slew rate of 20 V/µs complements the bandwidth for fast signal handling.

What is the difference between AD8512ARZ and AD8512AR?

The AD8512ARZ and AD8512AR are functionally identical, but the 'Z' suffix indicates lead-free (RoHS compliant) packaging. Both are dual JFET op amps in 8-SOIC packages with the same electrical specifications. The AD8512ARZ is the lead-free version, which is preferred for new designs due to environmental regulations.

Can AD8512ARZ be used in audio applications?

Yes, the AD8512ARZ is suitable for audio applications due to its low noise (8 nV/√Hz) and low distortion. It can be used in audio preamplifiers, active filters, and headphone amplifiers. Its wide bandwidth and high slew rate ensure accurate reproduction of audio signals without significant degradation.

What is the package of AD8512ARZ?

The AD8512ARZ is available in an 8-lead SOIC package. This surface-mount package is widely used and easy to handle in automated assembly. The SOIC-8 package has a body width of 3.9 mm and a pitch of 1.27 mm, making it suitable for compact PCB designs.

Is AD8512ARZ RoHS compliant?

Yes, the AD8512ARZ is RoHS compliant. The 'Z' suffix in the part number indicates lead-free and RoHS-compliant packaging. This ensures the component meets environmental standards for hazardous substances, making it suitable for use in products sold in regions with RoHS regulations.

What is the operating temperature range of AD8512ARZ?

The AD8512ARZ operates over the industrial temperature range of -40°C to +125°C. This wide range makes it suitable for harsh environments, including automotive and industrial applications. The device's performance is guaranteed across this temperature range, ensuring reliable operation in extreme conditions.

Where can I buy AD8512ARZ?

The AD8512ARZ is available from authorized distributors such as DigiKey, Mouser, and Octopart. As of 2026-08-21, DigiKey lists the AD8512ARZ with pricing starting at $3.50 for single-unit quantities. Availability may vary, so check distributor websites for current stock and lead times.

What is the price of AD8512ARZ?

As of 2026-08-21, the AD8512ARZ is priced at approximately $3.50 for a single unit, with volume discounts available. For example, at 1000 units, the price drops to around $2.25 per unit. Prices are subject to change and may vary between distributors, so it is advisable to compare quotes.

What is the lead time for AD8512ARZ?

The lead time for AD8512ARZ depends on the distributor and current stock levels. DigiKey typically shows 'ships today' for in-stock items, while Mouser may have similar availability. For larger quantities, lead times can range from a few days to several weeks. Check with your preferred distributor for accurate lead time information.

Is AD8512ARZ in stock?

As of 2026-08-21, the AD8512ARZ appears to be in stock at major distributors like DigiKey and Mouser. DigiKey lists it as 'ships today' for immediate dispatch. However, stock levels can change rapidly, so it is recommended to verify availability on the distributor's website before placing an order.

What is the best drop-in replacement for AD8512ARZ?

The best drop-in replacement for AD8512ARZ is the AD8512AR (non-lead-free version) or the AD8512ARMZ (MSOP package). For cross-brand alternatives, the OPA2188 from Texas Instruments is a pin-compatible dual op amp with similar specifications, though it has a lower bandwidth. Always verify pinout and specifications before substitution.

Can AD8512ARZ be replaced by OPA2188?

Yes, the OPA2188 can replace the AD8512ARZ in many applications, as it is a dual precision op amp in an 8-SOIC package with similar pinout. However, the OPA2188 has a lower gain bandwidth product (2 MHz) and higher input bias current (0.9 mA), so it may not be suitable for high-speed or high-impedance applications. Verify compatibility for your specific circuit.

Engineering reference data for AD8512ARZ — comparison, design guidance, and compliance information.

Selection Guide

Choose the AD8512ARZ when you need a dual precision JFET op amp with low noise, low offset, and ultra-low input bias current. It is ideal for precision instrumentation, data acquisition, and audio applications. If you require a lead-free version, the AD8512ARZ is the right choice. For applications where a smaller footprint is needed, consider the AD8512ARMZ (MSOP package). If you need lower offset voltage and are willing to sacrifice bandwidth, the OPA2188 from Texas Instruments is a viable alternative. For chopper-stabilized performance with even lower offset, the AD8628 is an option, but it has a lower supply voltage range. Always verify pin compatibility and specifications for your specific application.

Comparison with Alternatives

Parameter	This Product	AD8512AR	AD8512ARMZ	OPA2188	AD8628
Package	8-SOIC	8-SOIC	8-MSOP	8-SOIC	8-SOIC
Brand	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Analog Devices
Number of Channels	2	2	2	2	2
Supply Voltage Range	±5 V to ±15 V	±5 V to ±15 V	±5 V to ±15 V	±2.25 V to ±18 V	±2.5 V to ±5 V
Input Offset Voltage	100 µV (typ)	100 µV (typ)	100 µV (typ)	0.5 µV (typ)	50 µV (typ)
Input Bias Current	1 pA (typ)	1 pA (typ)	1 pA (typ)	0.9 mA (typ)	0.8 mA (typ)
Gain Bandwidth Product	8 MHz	8 MHz	8 MHz	2 MHz	2 MHz
Slew Rate	20 V/µs	20 V/µs	20 V/µs	0.8 V/µs	1 V/µs

Key Differentiators

Ultra-low input bias current of 1 pA (vs OPA2188)
Higher gain bandwidth product of 8 MHz (vs OPA2188)
Higher slew rate of 20 V/µs (vs AD8628)

Design Notes

The AD8512ARZ operates from ±5 V to ±15 V supplies. Ensure that the power supply is well-regulated and decoupled with 0.1 µF ceramic capacitors placed close to the V+ and V- pins. For best performance, use a low-noise power supply to avoid injecting noise into the amplifier.

For optimal performance, place the AD8512ARZ on a PCB with a solid ground plane. Keep input traces short and shielded to minimize noise pickup. Use guard rings around the input pins to reduce leakage currents, especially in high-impedance applications.

Avoid exceeding the input common-mode voltage range, which is typically from V- to V+ - 1.5 V. Exceeding this range can cause phase reversal or latch-up. Also, ensure that the output does not drive capacitive loads greater than 500 pF without an isolation resistor, as this can cause instability.