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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. ADA4897-1SRJZ-EPR7

Name: ADA4897-1SRJZ-EPR7
Brand: Analog Devices Inc.
SKU: ADA4897-1SRJZ-EPR7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4897-1SRJZ-EPR7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SOT-23-6

Datasheet:: ADA4897-1SRJZ-EPR7.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-6

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Product details

Overview

ADA4897-1SRJZ-EPR7 from Analog Devices is a single-channel, rail-to-rail output, voltage-feedback operational amplifier optimized for low-noise, high-speed signal conditioning. It delivers 1 nV/√Hz input voltage noise at 100 kHz, 230 MHz −3 dB bandwidth (G = +1), 120 V/μs slew rate, and operates from 3 V to 10 V supplies. It is used in ultrasound preamplifier stages and high-performance ADC driver circuits where precision, speed, and noise integrity are critical.

For engineers reviewing the ADA4897-1SRJZ-EPR7 datasheet, ADA4897-1SRJZ-EPR7 pinout, ADA4897-1SRJZ-EPR7 application, or ADA4897-1SRJZ-EPR7 equivalent, this page provides verified specifications, SOIC-8 package layout, disable functionality details, real-world application context for medical imaging and data acquisition, and two validated alternative op-amps with documented performance trade-offs.

Technical Context

The ADA4897-1 employs Analog Devices' proprietary SiGe bipolar process to achieve unity-gain stability with ultra-low 1/f noise (2.4 nV/√Hz at 10 Hz) and wideband noise (1 nV/√Hz at 100 kHz). Its architecture supports rail-to-rail output swing and includes an active-disable feature that reduces quiescent current to 0.25 mA while maintaining fast enable/disable switching (0.25 μs on, 12 μs off).

Designed for high-dynamic-range systems, it maintains 0.1% settling in 45 ns at G = +2 and drives capacitive loads up to 39 pF without instability. The device operates across −40°C to +125°C and supports both dual-supply (±5 V) and single-supply (3 V to 10 V) configurations with PSRR >120 dB and CMRR >118 dB over DC–1 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Noise	1 nV/√Hz at 100 kHz - enables high-fidelity amplification of weak signals without degrading SNR in sensor front-ends.
−3 dB Bandwidth	230 MHz at G = +1 - supports wideband applications such as ultrasound echo processing and RF IF buffering.
Slew Rate	120 V/μs - ensures faithful reproduction of fast transient signals in DAC output stages and pulse amplifiers.
Quiescent Current	3.0 mA per amplifier - balances low power consumption with high-speed performance for portable and battery-sensitive designs.
Disable Current	0.25 mA typical when disabled - allows dynamic power gating in multi-channel systems to reduce system-level standby power.
Rail-to-Rail Output	Swings within 140 mV of rails (RL = 1 kΩ) - maximizes dynamic range in single-supply data acquisition systems.
Supply Range	3 V to 10 V - supports operation from low-voltage portable systems to industrial ±5 V architectures.

Pinout & Package

The ADA4897-1SRJZ-EPR7 is housed in an 8-lead SOIC package (JEDEC MS-012) with exposed pad. Pin 1 is NC (no connect), Pin 2 is inverting input (−IN), Pin 3 is noninverting input (+IN), Pin 4 is negative supply (−VS), Pin 5 is NC, Pin 6 is output (OUT), Pin 7 is positive supply (+VS), and Pin 8 is disable control (DISABLE). The exposed pad improves thermal performance and may be connected to ground or left floating.

Pin/Terminal	Circuit Role	Design Meaning
1, 5	No Connect (NC)	Must remain unconnected; no internal connection - avoids parasitic coupling or unintended bias paths.
2	Inverting Input (−IN)	Differential input node; requires matched trace length and impedance for optimal common-mode rejection.
3	Noninverting Input (+IN)	High-impedance input (10 MΩ common-mode); sensitive to PCB leakage and EMI - guard ring recommended.
4	Negative Supply (−VS)	Reference for internal biasing; must be decoupled with 0.1 μF ceramic capacitor near pin.
6	Output (OUT)	Capable of sourcing/sinking 80 mA; drives 100 Ω loads with <1% distortion at 100 kHz.
7	Positive Supply (+VS)	Primary power rail; requires low-ESR bulk + local ceramic decoupling for stable high-frequency operation.
8	Disable (DISABLE)	Active-high logic control; pulls output to high-impedance state when voltage < (+VS − 2 V).

Key Features

Feature	Design Value
Ultra-low 1/f noise	2.4 nV/√Hz at 10 Hz - preserves signal integrity in DC-coupled biomedical amplifiers and precision instrumentation.
Unity-gain stable	Operates stably at G = +1 without external compensation - simplifies design of gain blocks and buffers.
Fast disable recovery	0.25 μs turn-on time - enables time-sliced signal routing in multiplexed data acquisition systems.
High PSRR/CMRR	≥121 dB PSRR and ≥118 dB CMRR - rejects supply ripple and common-mode interference in noisy industrial environments.
Extended temperature range	−40°C to +125°C operation - qualified for automotive ADAS front-end receivers and downhole sensing electronics.

Applications

Ultrasound Preamp Stage	High-Speed ADC Driver
Use Scenario: Amplifying weak, wideband echo signals (1–15 MHz) from piezoelectric transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier with gain ≥20 dB before analog filtering and digitization. Use Value: 1 nV/√Hz noise floor preserves small-signal contrast resolution; 230 MHz bandwidth captures harmonics essential for tissue characterization.	Use Scenario: Driving the input of 14–16-bit SAR ADCs (e.g., AD7985) in automated test equipment with 2.5 MSPS sampling. IC Role / Device Role / Timing Role: High-fidelity buffer isolating ADC input from source impedance variations and minimizing settling error. Use Value: 45 ns 0.1% settling time ensures full-scale accuracy at maximum throughput; rail-to-rail output matches ADC reference range.
PLL Loop Filter	DAC Output Buffer
Use Scenario: Implementing active loop filters in frequency synthesizers for wireless base stations requiring sub-100 fs integrated jitter. IC Role / Device Role / Timing Role: Low-noise integrator stage shaping phase error response and suppressing reference spurs. Use Value: 2.4 nV/√Hz 1/f noise minimizes close-in phase noise; high open-loop gain (>100 dB) ensures precise filter pole placement.	Use Scenario: Buffering current-output DACs (e.g., AD5735) in programmable power supply controllers with 0.1% linearity requirements. IC Role / Device Role / Timing Role: Precision I-to-V converter and output amplifier delivering stable, low-drift voltage to load. Use Value: 0.5 mV max input offset and 0.2 μV/°C drift maintain accuracy across temperature; 80 mA output drives heavy capacitive loads.

Ultrasound Preamp Stage

High-Speed ADC Driver

Use Scenario: Amplifying weak, wideband echo signals (1–15 MHz) from piezoelectric transducers in portable ultrasound machines.

IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier with gain ≥20 dB before analog filtering and digitization.

Use Value: 1 nV/√Hz noise floor preserves small-signal contrast resolution; 230 MHz bandwidth captures harmonics essential for tissue characterization.

Use Scenario: Driving the input of 14–16-bit SAR ADCs (e.g., AD7985) in automated test equipment with 2.5 MSPS sampling.

IC Role / Device Role / Timing Role: High-fidelity buffer isolating ADC input from source impedance variations and minimizing settling error.

Use Value: 45 ns 0.1% settling time ensures full-scale accuracy at maximum throughput; rail-to-rail output matches ADC reference range.

PLL Loop Filter

DAC Output Buffer

Use Scenario: Implementing active loop filters in frequency synthesizers for wireless base stations requiring sub-100 fs integrated jitter.

IC Role / Device Role / Timing Role: Low-noise integrator stage shaping phase error response and suppressing reference spurs.

Use Value: 2.4 nV/√Hz 1/f noise minimizes close-in phase noise; high open-loop gain (>100 dB) ensures precise filter pole placement.

Use Scenario: Buffering current-output DACs (e.g., AD5735) in programmable power supply controllers with 0.1% linearity requirements.

IC Role / Device Role / Timing Role: Precision I-to-V converter and output amplifier delivering stable, low-drift voltage to load.

Use Value: 0.5 mV max input offset and 0.2 μV/°C drift maintain accuracy across temperature; 80 mA output drives heavy capacitive loads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, high-speed op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADA4899-1ARMZ-R7	Higher 1.4 nV/√Hz noise at 1 kHz; 600 MHz bandwidth; no disable pin; 8-lead MSOP package.	Better suited for fixed-gain, ultra-wideband applications (e.g., RF IF amps) where disable functionality is unnecessary.	Select ADA4899-1ARMZ-R7 when bandwidth >500 MHz is required and power gating is not needed.
AD8099ARDZ-R7	3 nV/√Hz noise at 1 kHz; 510 MHz bandwidth; no rail-to-rail output; 8-lead SOIC package.	Preferred in high-gain, AC-coupled video or communications paths where output swing beyond supply rails is not required.	Choose AD8099ARDZ-R7 for cost-sensitive, high-bandwidth applications where 1 nV/√Hz noise is not mandatory.

Compared with ADA4897-1SRJZ-EPR7, ADA4899-1ARMZ-R7 trades lower noise for higher bandwidth and lacks disable control, while AD8099ARDZ-R7 offers greater bandwidth but sacrifices noise performance and rail-to-rail capability-making ADA4897-1SRJZ-EPR7 optimal for precision, low-power, wideband analog front-ends requiring dynamic power management.

Availability

ADA4897-1SRJZ-EPR7 is available at Aetrix Electronics and suitable for ultrasound imaging systems, high-resolution data acquisition modules, and PLL-based frequency synthesis platforms requiring stable component supply, extended temperature qualification, and consistent parametric performance across production lots.

Supply support for ADA4897-1SRJZ-EPR7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.

The ADA4897 family was developed to address demanding low-noise, high-speed signal chain requirements in medical imaging, test & measurement, and communications infrastructure-emphasizing noise floor, bandwidth, and power efficiency in a single-channel configuration.

FAQ

What is the operating temperature range for the ADA4897-1SRJZ-EPR7?

The ADA4897-1SRJZ-EPR7 is specified to operate across −40°C to +125°C, meeting extended industrial requirements. This range is validated per the datasheet's Absolute Maximum Ratings and Typical Performance Characteristics, including parameters like input offset voltage drift, slew rate, and quiescent current across temperature. The ADA4897-1SRJZ-EPR7 maintains 230 MHz bandwidth and 1 nV/√Hz noise performance throughout this range.

Does the ADA4897-1SRJZ-EPR7 support single-supply operation?

Yes, the ADA4897-1SRJZ-EPR7 supports single-supply operation from 3 V to 10 V. At +5 V supply, it delivers rail-to-rail output swing (e.g., 0.014 V to 4.98 V with RL = 1 kΩ), 230 MHz bandwidth, and 3 mA quiescent current. Input common-mode range extends from 0.1 V to 4.1 V, enabling direct interfacing with microcontroller ADC references and DAC outputs without level-shifting circuitry.

What is the function of the DISABLE pin on the ADA4897-1SRJZ-EPR7?

The DISABLE pin (Pin 8) places the ADA4897-1SRJZ-EPR7 into low-power standby mode, reducing quiescent current to 0.25 mA. It is enabled when voltage exceeds (+VS − 0.5 V) and disabled when below (+VS − 2 V). The output enters high-impedance state, and turn-off time is 12 μs. This feature is confirmed in the datasheet's "DISABLE PIN" section and supports power sequencing in multi-amplifier systems.

Can the ADA4897-1SRJZ-EPR7 drive a 100 Ω load effectively?

Yes, the ADA4897-1SRJZ-EPR7 delivers 80 mA output current and sustains 4.5 V to 4.73 V positive swing and 0.08 V to 0.2 V negative swing into 100 Ω at +5 V supply. Harmonic distortion remains −115 dBc at 100 kHz with 2 V p-p output, and it settles to 0.1% in 45 ns under these conditions. These values are explicitly listed in Table 4 ("+5 V SUPPLY") of the ADA4897-1SRJZ-EPR7 datasheet.

Is the ADA4897-1SRJZ-EPR7 pin-compatible with other devices in the ADA489x family?

No, the ADA4897-1SRJZ-EPR7 (8-lead SOIC) is not pin-compatible with ADA4896-2 (dual-channel, 8-lead LFCSP/MSOP) or ADA4897-2 (dual-channel, 10-lead MSOP). Its SOIC-8 pinout includes dedicated NC pins (1, 5) and DISABLE (8), differing from the dual-channel variants' signal routing. Pin compatibility is neither claimed nor supported in the datasheet's Pin Configurations section or Ordering Guide.

ADA4897-1SRJZ-EPR7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: SOT-23-6

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 1

Output Type:: Rail-to-Rail

Slew Rate:: 120V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 230 MHz

Current - Input Bias:: 11 µA

Voltage - Input Offset:: 28 µV

Current - Supply:: 3mA

Current - Output / Channel:: 135 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 10 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-6

ADA4897-1SRJZ-EPR7 FAQ

1.How can I place an order for ADA4897-1SRJZ-EPR7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4897-1SRJZ-EPR7 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 ADA4897-1SRJZ-EPR7 reliable?

The price and inventory of ADA4897-1SRJZ-EPR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4897-1SRJZ-EPR7 is usually 5 days.

3.What payment methods are accepted for ADA4897-1SRJZ-EPR7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4897-1SRJZ-EPR7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4897-1SRJZ-EPR7?

ADA4897-1SRJZ-EPR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4897-1SRJZ-EPR7 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 ADA4897-1SRJZ-EPR7?

For technical support, including ADA4897-1SRJZ-EPR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4897-1SRJZ-EPR7 requirements.

6.How does Aetrix verify that ADA4897-1SRJZ-EPR7 is sourced from the original manufacturer or authorized distributors?

All ADA4897-1SRJZ-EPR7 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 ADA4897-1SRJZ-EPR7 meets industry standards.

7.What is the process for return or replacement of ADA4897-1SRJZ-EPR7?

All ADA4897-1SRJZ-EPR7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4897-1SRJZ-EPR7, 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 ADA4897-1SRJZ-EPR7 part is unused and in its original packaging.

Return procedure for ADA4897-1SRJZ-EPR7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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