Analog Devices

ADA4895-1ARZ-RL7 - 1nV/√Hz, G≥10 Stable Op Amp | Analog Devices

Name: ADA4895-1ARZ-RL7
Brand: Analog Devices
Price: 2.19 USD
Availability: InStock

MPN: ADA4895-1ARZ-RL7 ✓ Active

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1 nV/√Hz (typical) Vdss 3 mA Id 8-Lead SOIC (ARZ) Package

From $2.19 USD / Unit

MOQ: 1 |

Price updated: 2026-08-23

Volume Pricing

Qty	Unit Price	Extended
1	$3.42	$3.42
10	$3.08	$30.80
100	$2.74	$274.00
500	$2.47	$1,235.00
1,000	$2.19	$2,190.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for ADA4895-1ARZ-RL7 — 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:

ADA4895-1ARZ-RL

✅ Drop-In

📦 8-Lead SOIC

Same die, different reel size (RL vs RL7)

📋 Reference alternative (not in catalog)

ADA4895-1ARZ

✅ Drop-In

Analog Devices

📦 8-Lead SOIC

1 · 3 V to 10 V · ±1.5 V to ±5 V · 3 mA · 2 nV/√Hz at 10 Hz · -72 dBc at 2 MHz · 235 MHz · 10

✓ In Stock

$2.19 / Unit

View Datasheet →

AD8099ARDZ

✅ Drop-In

📦 8-Lead SOIC

Lower noise (0.95 nV/√Hz) but higher quiescent current (15 mA)

📋 Reference alternative (not in catalog)

OPA847IDR

✅ Drop-In

📦 8-Lead SOIC

Similar noise (0.85 nV/√Hz) but lower bandwidth (3.9 GHz GBW)

📋 Reference alternative (not in catalog)

ℹ️ 2 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.

ADA4895-1ARZ-RL7 Maximum Ratings & Electrical Characteristics

Number of Channels	1
Amplifier Type	Voltage Feedback
Gain Bandwidth Product	236 MHz (at G=+10)
Slew Rate	943 V/μs
Input Voltage Noise Density	1 nV/√Hz (typical)
1/f Noise at 10 Hz	2 nV/√Hz
Supply Voltage Range	3 V to 10 V
Quiescent Current per Amplifier	3 mA
Rail-to-Rail Output	Yes
Settling Time to 0.1%	22 ns
Spurious-Free Dynamic Range (SFDR)	-72 dBc at 2 MHz
Minimum Stable Gain	10
Operating Temperature Range	-40°C to +125°C
Package	8-Lead SOIC (ARZ)
Mounting Type	Surface Mount
RoHS Status	Compliant

ADA4895-1ARZ-RL7 Pin Configuration

Pin 1	OUT — Amplifier output
Pin 2	-IN — Inverting input
Pin 3	+IN — Non-inverting input
Pin 4	V- — Negative supply
Pin 5	NC — No connect
Pin 6	NC — No connect
Pin 7	V+ — Positive supply
Pin 8	NC — No connect

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

ADA4895-1ARZ-RL7 is suitable for 6 applications: Ultrasound Imaging Front-End, Low-Noise Preamplifier, High-Speed Signal Conditioning, Test and Measurement Equipment, RF and IF Signal Processing, Portable Medical Devices.

💊

Ultrasound Imaging Front-End

The ADA4895-1's low input noise (1 nV/√Hz) and high bandwidth (236 MHz) make it ideal for amplifying the small echo signals in ultrasound systems. Its high slew rate (943 V/μs) ensures fast response to pulsed signals, while the rail-to-rail output maximizes dynamic range. The wide supply range (3 V to 10 V) supports various system voltages, and the low quiescent current (3 mA) is beneficial for portable ultrasound devices.

Recommended

AD8331 (Variable gain amplifier for ultrasound signal chain) AD9272 (Octal ultrasound receiver with integrated ADC)

🔧

Low-Noise Preamplifier

With 1 nV/√Hz input noise and 2 nV/√Hz at 10 Hz, the ADA4895-1 is perfect for low-noise preamplifiers in sensor interfaces, microphone preamps, and instrumentation. Its high gain stability (≥10) allows precise amplification of weak signals, and the rail-to-rail output ensures full-scale swing. The low quiescent current (3 mA) makes it suitable for battery-powered equipment.

Recommended

AD797 (Ultralow noise op amp for higher gain stages) AD8428 (Instrumentation amplifier for sensor conditioning)

🌐

High-Speed Signal Conditioning

The ADA4895-1's 236 MHz bandwidth and 943 V/μs slew rate enable high-speed signal conditioning in data acquisition, video, and communication systems. Its fast settling time (22 ns to 0.1%) ensures accurate sampling, and the low distortion (-72 dBc SFDR) preserves signal integrity. The wide supply range supports both 5 V and 10 V rails.

Recommended

AD9245 (14-bit ADC for high-speed data acquisition) AD8138 (Differential ADC driver for balanced signals)

🖥️

Test and Measurement Equipment

In oscilloscopes, spectrum analyzers, and signal generators, the ADA4895-1 provides low-noise, high-bandwidth amplification for accurate signal reproduction. Its high slew rate and fast settling time are critical for pulse measurements, while the low noise floor ensures precise small-signal analysis. The SOIC package is easy to integrate into PCB designs.

Recommended

AD9642 (14-bit ADC for digitizing amplified signals) AD8366 (Dual digital VGA for gain control)

📡

RF and IF Signal Processing

The ADA4895-1's high bandwidth and low distortion make it suitable for IF amplification in radio receivers and transmitters. Its low noise improves receiver sensitivity, and the rail-to-rail output allows direct interface to ADCs. The wide supply range accommodates various RF system voltages, and the low quiescent current is advantageous for portable RF devices.

Recommended

AD8367 (Variable gain amplifier for IF chain) AD6645 (14-bit ADC for IF sampling)

💊

Portable Medical Devices

The ADA4895-1's low power (3 mA) and wide supply range (3 V to 10 V) make it ideal for battery-powered medical devices such as portable ECG monitors and hearing aids. Its low noise ensures accurate biopotential signal acquisition, and the small SOIC package saves board space. The high bandwidth supports fast signal processing for real-time monitoring.

Recommended

AD8232 (ECG front-end with integrated instrumentation amp) ADuCM360 (Precision analog microcontroller for medical sensors)

Recommended Products Summary

AD8331 Variable gain amplifier for ultrasound signal chain Used in: Ultrasound Imaging Front-End AD9272 Octal ultrasound receiver with integrated ADC Used in: Ultrasound Imaging Front-End AD797 Ultralow noise op amp for higher gain stages Used in: Low-Noise Preamplifier AD8428 Instrumentation amplifier for sensor conditioning Used in: Low-Noise Preamplifier AD9245 14-bit ADC for high-speed data acquisition Used in: High-Speed Signal Conditioning AD8138 Differential ADC driver for balanced signals Used in: High-Speed Signal Conditioning AD9642 14-bit ADC for digitizing amplified signals Used in: Test and Measurement Equipment AD8366 Dual digital VGA for gain control Used in: Test and Measurement Equipment AD8367 Variable gain amplifier for IF chain Used in: RF and IF Signal Processing AD6645 14-bit ADC for IF sampling Used in: RF and IF Signal Processing AD8232 ECG front-end with integrated instrumentation amp Used in: Portable Medical Devices ADuCM360 Precision analog microcontroller for medical sensors Used in: Portable Medical Devices

What is the input voltage noise of the ADA4895-1ARZ-RL7?

The ADA4895-1ARZ-RL7 has an input voltage noise density of 1 nV/√Hz (typical) and a 1/f noise of 2 nV/√Hz at 10 Hz. According to the Analog Devices datasheet, this low noise makes it ideal for low-noise preamplifier and ultrasound applications.

What is the supply voltage range of the ADA4895-1?

The ADA4895-1 operates over a supply voltage range of 3 V to 10 V. This wide range allows use in both 5 V and 10 V systems, providing flexibility in various applications. The datasheet specifies this range for the ADA4895-1/ADA4895-2 family.

Is the ADA4895-1 stable at unity gain?

No, the ADA4895-1 is stable for gains of 10 or greater. It is a decompensated amplifier, meaning it is not unity-gain stable. For unity-gain applications, consider alternatives like the ADA4899-1, which is unity-gain stable.

What is the bandwidth of the ADA4895-1 at a gain of +10?

The ADA4895-1 has a small signal bandwidth of 236 MHz at a gain of +10. This high bandwidth, combined with a slew rate of 943 V/μs, makes it suitable for high-speed signal processing applications.

What is the quiescent current of the ADA4895-1?

The ADA4895-1 has a quiescent current of 3 mA per amplifier. This low power consumption is beneficial for battery-powered and portable applications where power efficiency is critical.

Can the ADA4895-1 be used in ultrasound applications?

Yes, the ADA4895-1 is ideal for ultrasound applications due to its low input noise (1 nV/√Hz) and high bandwidth (236 MHz). The low noise ensures high sensitivity in receiving echoes, and the high speed supports fast signal processing.

What is the settling time of the ADA4895-1?

The ADA4895-1 settles to 0.1% in 22 ns. This fast settling time is important for applications requiring accurate and rapid signal acquisition, such as data acquisition systems and pulse processing.

What is the spurious-free dynamic range (SFDR) of the ADA4895-1?

The ADA4895-1 has an SFDR of -72 dBc at 2 MHz. This indicates low distortion, making it suitable for high-frequency signal conditioning where linearity is critical.

What is the package type of the ADA4895-1ARZ-RL7?

The ADA4895-1ARZ-RL7 is available in an 8-lead SOIC package (ARZ suffix). The RL7 suffix indicates tape and reel packaging, which is suitable for automated assembly.

Where can I buy the ADA4895-1ARZ-RL7?

The ADA4895-1ARZ-RL7 is available from authorized distributors such as DigiKey, Mouser, and Arrow. As of 2026-08-23, it is in stock at DigiKey with pricing starting at $3.42 for single units.

What is the price of the ADA4895-1ARZ-RL7?

As of 2026-08-23, the ADA4895-1ARZ-RL7 is priced at $3.42 for 1 unit, $3.08 for 10 units, $2.74 for 100 units, $2.47 for 500 units, and $2.19 for 1000 units at DigiKey. Prices may vary by distributor and quantity.

What is the lead time for the ADA4895-1ARZ-RL7?

The lead time for the ADA4895-1ARZ-RL7 is typically 1-2 weeks from authorized distributors like DigiKey and Mouser. However, lead times can vary based on stock levels and demand. Check with your preferred distributor for current availability.

Is the ADA4895-1ARZ-RL7 in stock?

As of 2026-08-23, the ADA4895-1ARZ-RL7 is in stock at DigiKey and Mouser. Availability can change quickly, so it is recommended to check the distributor's website for real-time inventory.

What is the difference between the ADA4895-1 and the ADA4899-1?

The ADA4895-1 is a gain-of-10 stable amplifier with 1 nV/√Hz noise and 236 MHz bandwidth, while the ADA4899-1 is unity-gain stable with similar noise but lower bandwidth. The ADA4895-1 is better for high-gain applications, whereas the ADA4899-1 is suitable for unity-gain buffers.

What is the best drop-in replacement for the ADA4895-1ARZ-RL7?

The ADA4895-1ARZ-RL7 has several drop-in replacements, including the ADA4895-1ARZ-RL (same die, different reel size) and the ADA4895-1ARZ (tube packaging). For cross-brand options, the AD8099ARDZ is a pin-compatible alternative with similar performance.

Can the ADA4895-1ARZ-RL7 be used in low-noise preamplifier applications?

Yes, the ADA4895-1ARZ-RL7 is ideal for low-noise preamplifiers due to its 1 nV/√Hz input noise and high bandwidth. It is commonly used in sensor interfaces and instrumentation where signal integrity is critical.

What is the operating temperature range of the ADA4895-1?

The ADA4895-1 operates over a temperature range of -40°C to +125°C. This wide range makes it suitable for industrial and automotive applications where extreme temperatures are encountered.

Is the ADA4895-1ARZ-RL7 RoHS compliant?

Yes, the ADA4895-1ARZ-RL7 is RoHS compliant. Analog Devices ensures that their products meet environmental standards, and the datasheet confirms RoHS compliance for this part.

What is the slew rate of the ADA4895-1?

The ADA4895-1 has a slew rate of 943 V/μs. This high slew rate allows the amplifier to handle large signal swings at high frequencies without distortion, making it suitable for video and pulse applications.

What are the key specifications of the ADA4895-1 that engineers should know?

Engineers should know that the ADA4895-1 has 1 nV/√Hz input noise, 236 MHz bandwidth at gain +10, 943 V/μs slew rate, 3 mA quiescent current, and operates from 3 V to 10 V. It is stable for gains ≥10 and comes in an 8-lead SOIC package.

Hey Google, what can replace the ADA4895-1ARZ-RL7?

The ADA4895-1ARZ-RL7 can be replaced by the ADA4895-1ARZ-RL (same die, different reel), ADA4895-1ARZ (tube), or the AD8099ARDZ from Analog Devices. These are pin-compatible drop-in replacements with similar performance.

Is the ADA4895-1 the same as the ADA4895-2?

No, the ADA4895-1 is a single amplifier, while the ADA4895-2 is a dual amplifier. They share the same electrical specifications but differ in the number of channels and package pinout.

What is the best Analog Devices equivalent for the ADA4895-1ARZ-RL7?

The best Analog Devices equivalent is the ADA4895-1ARZ-RL, which is the same die with a different reel size. For a lower-power option, consider the ADA4897-1, which has similar noise but lower bandwidth.

Engineering reference data for ADA4895-1ARZ-RL7 — comparison, design guidance, and compliance information.

Selection Guide

Choose the ADA4895-1ARZ-RL7 when you need a low-noise, high-speed amplifier with low power consumption and a wide supply range. It is ideal for battery-powered ultrasound, medical, and portable instrumentation. If you require unity-gain stability, consider the ADA4897-1 or AD8099. For lower noise at the expense of higher power, the AD8099 or OPA847 are alternatives. The ADA4895-1ARZ-RL and ADA4895-1ARZ are identical electrically but differ in packaging (tape/reel vs tube).

Comparison with Alternatives

Parameter	This Product	ADA4895-1ARZ-RL	ADA4895-1ARZ	AD8099ARDZ	OPA847IDR
Package	8-Lead SOIC	8-Lead SOIC	8-Lead SOIC	8-Lead SOIC	8-Lead SOIC
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments
Input Voltage Noise	1 nV/√Hz	1 nV/√Hz	1 nV/√Hz	0.95 nV/√Hz	0.85 nV/√Hz
Bandwidth (G=+10)	236 MHz	236 MHz	236 MHz	3.8 GHz (GBW)	3.9 GHz (GBW)
Slew Rate	943 V/μs	943 V/μs	943 V/μs	1350 V/μs	950 V/μs
Quiescent Current	3 mA	3 mA	3 mA	15 mA	18 mA
Supply Voltage Range	3 V to 10 V	3 V to 10 V	3 V to 10 V	5 V to 12 V	5 V to 12 V
Minimum Stable Gain	10	10	10	1 (unity)	1 (unity)

Key Differentiators

Ultra-low input noise of 1 nV/√Hz (vs AD8099ARDZ)
Low quiescent current of 3 mA (vs OPA847IDR)
Wide supply range of 3 V to 10 V (vs AD8099ARDZ)

Design Notes

Place 0.1 μF ceramic capacitors close to the V+ and V- pins to decouple the power supply. Use a ground plane to minimize noise pickup. Keep feedback resistors and input traces short to reduce parasitic capacitance and maintain stability.

The ADA4895-1 is not unity-gain stable; it requires a gain of at least 10. Operating at lower gains can cause oscillation. Ensure the feedback network sets the gain to ≥10. Also, avoid excessive capacitive loading on the output, which can degrade stability.

The SOIC package has a thermal resistance of approximately 158°C/W (theta_JA). At a supply voltage of 10 V and quiescent current of 3 mA, power dissipation is 30 mW, resulting in a temperature rise of about 5°C. This is acceptable, but for higher output currents, consider the thermal impact.