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

Analog Devices Inc. ADA4857-1YRZ-R7

Name: ADA4857-1YRZ-R7
Brand: Analog Devices Inc.
SKU: ADA4857-1YRZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4857-1YRZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADA4857-1YRZ-R7.pdf

Description:: IC VOLTAGE FEEDBACK 1 CIRC 8SOIC

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Product details

Overview

ADA4857-1YRZ-R7 from Analog Devices is a single, unity-gain stable, voltage-feedback operational amplifier optimized for high-speed, low-distortion signal conditioning in precision analog front-ends. It delivers 850 MHz −3 dB bandwidth (LFCSP), 2800 V/μs slew rate, −88 dBc HD2 at 10 MHz, 4.4 nV/√Hz input voltage noise, and operates from ±5 V or +5 V supplies. It serves as an ADC driver in high-resolution data acquisition systems requiring fast settling and minimal harmonic corruption.

For engineers reviewing the ADA4857-1YRZ-R7 datasheet, ADA4857-1YRZ-R7 pinout, ADA4857-1YRZ-R7 application, or ADA4857-1YRZ-R7 equivalent, this page provides verified specifications, LFCSP package terminal mapping, real-world use cases in instrumentation and IF amplification, and validated alternative op-amps with documented functional trade-offs.

Technical Context

The ADA4857-1YRZ-R7 employs Analog Devices' proprietary XFCB process to achieve simultaneous high bandwidth, low distortion, and low power-enabling it to drive 16-bit+ ADCs without degrading SFDR. Its voltage-feedback architecture supports stable operation at G = +1 with 0.1% settling in 15 ns and maintains >75 MHz 0.1 dB flatness into 150 Ω loads.

It integrates a dedicated power-down pin (PD) enabling <33 ns turn-on and <55 μs turn-off, reducing quiescent current from 5 mA to 450 μA. The exposed thermal paddle in its 3 mm × 3 mm LFCSP package lowers θJC to 34.8°C/W, supporting reliable operation across −40°C to +125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
−3 dB Bandwidth	850 MHz (G = +1, RL = 1 kΩ, LFCSP); enables baseband signal amplification up to UHF frequencies without gain peaking.
Slew Rate	2800 V/μs (G = +1, 4 V step); ensures faithful reproduction of fast-rising edges in pulse and video applications.
Harmonic Distortion	−88 dBc HD2 at 10 MHz (G = +1, 2 V p-p); preserves signal integrity in wideband IF stages where spurious content must be minimized.
Input Voltage Noise	4.4 nV/√Hz at 100 kHz; critical for maintaining SNR in low-level sensor signal chains preceding high-resolution ADCs.
Supply Range	±4.5 V to ±5.5 V or +4.5 V to +10.5 V; supports dual-supply precision systems and single-supply industrial interfaces.
Quiescent Current	5 mA per amplifier (typical); balances speed and power efficiency for battery-aware portable test equipment.
Settling Time	15 ns to 0.1% (G = +2, 2 V step); meets timing budgets for multiplexed data acquisition with >60 MSPS throughput.

Pinout & Package

ADA4857-1YRZ-R7 is packaged in a 3 mm × 3 mm, 8-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad (EP). This RoHS-compliant, surface-mount package offers low thermal resistance (θJA = 94.5°C/W) and enhanced PCB heat dissipation when the EP is soldered to a ground or supply plane.

Pin/Terminal	Circuit Role	Design Meaning
1 - PD	Power-Down Control Input	Active-high logic input; ≥(+VS − 2 V) disables amplifier, reducing I_Q to 450 μA; enables rapid system-level power gating.
2 - FB	Inverting Input Feedback Node	Direct connection point for feedback resistor in noninverting configurations; internal node tied to −IN for unity-gain stability.
3 - −IN	Inverting Input	Differential input terminal; 8 MΩ common-mode input resistance minimizes loading on high-impedance sources.
4 - +IN	Noninverting Input	High-impedance input for reference or signal routing; supports rail-to-rail common-mode range (±4 V on ±5 V supplies).
5 - −VS	Negative Supply Rail	Must be connected to stable negative supply; absolute max rating is −11 V; reverse polarity protection not integrated.
6 - NC	No Connect	Internally unconnected; must remain floating-no external bias or tie required.
7 - OUT	Amplifier Output	Capable of sourcing/sinking 50 mA; drives 100 Ω loads with <1.7 V headroom; supports direct connection to ADC inputs.
8 - +VS	Positive Supply Rail	Accepts 4.5 V to 10.5 V; PSRR >62 dB up to 100 kHz ensures immunity to digital supply noise coupling.
EP - Exposed Pad	Thermal & Electrical Reference	Must be soldered to PCB copper; may be connected to GND or +VS to improve thermal performance and reduce EMI susceptibility.

Key Features

Feature	Design Value
Ultralow Harmonic Distortion	−88 dBc HD2 at 10 MHz enables clean spectral representation in ultrasound beamforming and spectrum analyzers.
Fast Power-Down Recovery	33 ns turn-on time allows dynamic power cycling in time-interleaved ADC systems without missing samples.
Wide Supply Flexibility	Operates from ±4.5 V to ±5.5 V or single +5 V to +10.5 V, simplifying integration into mixed-signal systems with diverse rail requirements.
Low Input Voltage Noise	4.4 nV/√Hz at 100 kHz preserves dynamic range in low-amplitude sensor interfaces (e.g., piezoelectric transducers).
Robust Capacitive Load Drive	Stable with up to 10 pF capacitive load at G = +2, easing layout for ADC input filtering without external isolation resistors.

Applications

Instrumentation Signal Chain	IF Amplifier in Communications Receivers
Use Scenario: Amplifying low-level signals from strain gauges or thermocouples in automated test equipment before digitization. IC Role / Device Role / Timing Role: Precision gain stage and ADC driver ensuring <0.01% linearity error and <15 ns settling for 1 MSps sampling. Use Value: 4.4 nV/√Hz noise floor and −88 dBc distortion maintain ENOB >15 bits at 10 MHz input frequency.	Use Scenario: Buffering and amplifying intermediate frequency (IF) signals between mixer and demodulator in SDR receivers. IC Role / Device Role / Timing Role: High-linearity IF amplifier with 850 MHz bandwidth supporting 100 MHz channel bandwidths in LTE/WiFi front-ends. Use Value: 75 MHz 0.1 dB flatness into 150 Ω ensures amplitude fidelity across wide IF bands without equalization.
Active Filter Stage	High-Speed DAC Output Buffer
Use Scenario: Implementing 4th-order low-pass filter in medical imaging systems to suppress out-of-band noise before ADC. IC Role / Device Role / Timing Role: Unity-gain stable op-amp configured as multiple feedback (MFB) filter with precise pole placement. Use Value: 2800 V/μs slew rate prevents slew-induced distortion in high-amplitude filter outputs up to 5 V p-p.	Use Scenario: Isolating and driving the output of a 16-bit, 100 MSPS DAC feeding an RF upconverter stage. IC Role / Device Role / Timing Role: Low-noise, low-distortion buffer that maintains DAC spectral purity while driving 50 Ω transmission lines. Use Value: −88 dBc HD2 at 10 MHz ensures DAC image rejection >80 dB, meeting FCC spectral mask requirements.

Instrumentation Signal Chain

IF Amplifier in Communications Receivers

Use Scenario: Amplifying low-level signals from strain gauges or thermocouples in automated test equipment before digitization.

IC Role / Device Role / Timing Role: Precision gain stage and ADC driver ensuring <0.01% linearity error and <15 ns settling for 1 MSps sampling.

Use Value: 4.4 nV/√Hz noise floor and −88 dBc distortion maintain ENOB >15 bits at 10 MHz input frequency.

Use Scenario: Buffering and amplifying intermediate frequency (IF) signals between mixer and demodulator in SDR receivers.

IC Role / Device Role / Timing Role: High-linearity IF amplifier with 850 MHz bandwidth supporting 100 MHz channel bandwidths in LTE/WiFi front-ends.

Use Value: 75 MHz 0.1 dB flatness into 150 Ω ensures amplitude fidelity across wide IF bands without equalization.

Active Filter Stage

High-Speed DAC Output Buffer

Use Scenario: Implementing 4th-order low-pass filter in medical imaging systems to suppress out-of-band noise before ADC.

IC Role / Device Role / Timing Role: Unity-gain stable op-amp configured as multiple feedback (MFB) filter with precise pole placement.

Use Value: 2800 V/μs slew rate prevents slew-induced distortion in high-amplitude filter outputs up to 5 V p-p.

Use Scenario: Isolating and driving the output of a 16-bit, 100 MSPS DAC feeding an RF upconverter stage.

IC Role / Device Role / Timing Role: Low-noise, low-distortion buffer that maintains DAC spectral purity while driving 50 Ω transmission lines.

Use Value: −88 dBc HD2 at 10 MHz ensures DAC image rejection >80 dB, meeting FCC spectral mask requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADA4898-1ARZ	Higher 1 GHz bandwidth but higher 10.5 mA I_Q; no power-down pin; SOIC/LFCSP only.	Better for fixed-speed, always-on IF amplifiers where power gating is unnecessary.	Select ADA4898-1ARZ when maximum bandwidth is prioritized over power-down capability and quiescent current.
LMH6629MA/NOPB	800 MHz bandwidth, −84 dBc HD2 at 10 MHz, 6.5 mA I_Q, no PD pin; offered in SOIC-8 only.	Suitable for cost-sensitive industrial DAQ where LFCSP assembly is unavailable.	Choose LMH6629MA/NOPB when SOIC packaging and TI supply chain alignment outweigh need for thermal pad and PD control.

Compared with ADA4857-1YRZ-R7, ADA4898-1ARZ trades 15% higher power for 12% more bandwidth and no power-down, while LMH6629MA/NOPB sacrifices 5% bandwidth and 4 dB distortion performance for broader distributor availability and SOIC compatibility.

Availability

ADA4857-1YRZ-R7 is available at Aetrix Electronics and suitable for instrumentation signal chains, IF amplification in wireless infrastructure, and high-speed DAC buffering requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for ADA4857-1YRZ-R7 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 ADA4857 family was engineered for demanding high-speed precision applications-including ultrasound, ATE, and high-resolution ADC/DAC interfaces-where low distortion, wide bandwidth, and fast settling are non-negotiable.

FAQ

What is the maximum operating temperature range for the ADA4857-1YRZ-R7?

The ADA4857-1YRZ-R7 is rated for continuous operation from −40°C to +125°C ambient temperature. This extended industrial range is validated across all electrical specifications in the Rev. D datasheet and supports deployment in harsh environments such as automotive engine control units and outdoor telecom equipment. The LFCSP package's low θJA (94.5°C/W) ensures junction temperature remains within safe limits under typical PCB thermal design.

Does the ADA4857-1YRZ-R7 require external compensation for unity-gain stability?

No, the ADA4857-1YRZ-R7 is internally compensated for unity-gain stability. It achieves stable operation with ≥6 dB phase margin at G = +1 across all specified loads and supply conditions, as confirmed by open-loop gain/phase plots (Figure 32) and transient response testing (Figures 22–25). No external compensation components are needed for standard noninverting or inverting configurations.

Can the exposed thermal pad (EP) of the ADA4857-1YRZ-R7 be left unconnected?

No-the exposed thermal pad (EP) must be soldered to the PCB for mechanical reliability and thermal performance. While EP may be connected to GND or +VS per datasheet Note 2, leaving it unconnected violates JEDEC MO-220 standards, risks solder joint voiding, and increases θJA by >25%, potentially causing thermal runaway above 70°C ambient. A minimum 90% solder coverage is recommended.

What is the typical power-down current consumption of the ADA4857-1YRZ-R7?

The ADA4857-1YRZ-R7 draws 350–450 μA in power-down mode (PD ≥ +VS − 2 V), representing a >90% reduction from its 5 mA active quiescent current. This low standby current enables energy-efficient sleep modes in portable instrumentation and battery-powered SDR platforms without compromising wake-up latency (<55 μs turn-off, <33 ns turn-on).

Is the ADA4857-1YRZ-R7 pin-compatible with other members of the ADA4857 family?

Yes-the ADA4857-1YRZ-R7 (8-lead LFCSP) shares identical pinout and function mapping with the 8-lead SOIC variant (ADA4857-1ARMZ), including PD, FB, −IN, +IN, −VS, NC, OUT, and +VS assignments. However, it is not pin-compatible with the dual-channel ADA4857-2 (16-lead LFCSP), which uses a different pin count and layout per Table 7.

ADA4857-1YRZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Voltage Feedback

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 2800V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 850 MHz

Current - Input Bias:: 2 µA

Voltage - Input Offset:: 2 mV

Current - Supply:: 5mA

Current - Output / Channel:: 50 mA

Voltage - Supply Span (Min):: 4.5 V

Voltage - Supply Span (Max):: 10.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ADA4857-1YRZ-R7 FAQ

1.How can I place an order for ADA4857-1YRZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4857-1YRZ-R7 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 ADA4857-1YRZ-R7 reliable?

The price and inventory of ADA4857-1YRZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4857-1YRZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4857-1YRZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4857-1YRZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4857-1YRZ-R7?

ADA4857-1YRZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4857-1YRZ-R7 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 ADA4857-1YRZ-R7?

For technical support, including ADA4857-1YRZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4857-1YRZ-R7 requirements.

6.How does Aetrix verify that ADA4857-1YRZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4857-1YRZ-R7 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 ADA4857-1YRZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4857-1YRZ-R7?

All ADA4857-1YRZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4857-1YRZ-R7, 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 ADA4857-1YRZ-R7 part is unused and in its original packaging.

Return procedure for ADA4857-1YRZ-R7:

1.Submit a request within 90 days.

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

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