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

Analog Devices Inc. ADA4817-2ACPZ-R7

Name: ADA4817-2ACPZ-R7
Brand: Analog Devices Inc.
SKU: ADA4817-2ACPZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4817-2ACPZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 16-WQFN Exposed Pad, CSP

Datasheet:: ADA4817-2ACPZ-R7.pdf

Description:: IC OPAMP VFB 2 CIRCUIT 16LFCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ADA4817-2ACPZ-R7 from Analog Devices is a dual, FET-input, voltage-feedback operational amplifier optimized for high-speed, low-noise signal conditioning in photodiode preamplifiers and ADC drivers. It delivers 1050 MHz −3 dB bandwidth (G = 1, RL = 100 Ω), 870 V/µs slew rate, 4 nV/√Hz input voltage noise at 100 kHz, and 2 pA typical input bias current - enabling precision wideband transimpedance amplification with sub-9 ns 0.1% settling time.

For engineers reviewing the ADA4817-2ACPZ-R7 datasheet, ADA4817-2ACPZ-R7 pinout, ADA4817-2ACPZ-R7 application, or ADA4817-2ACPZ-R7 equivalent, key selection considerations include its 16-lead LFCSP package with low-distortion pinout, independent power-down control per channel (PD1/PD2), ±5 V or 5 V single-supply operation, and verified performance in photodiode front ends, data acquisition systems, and high-fidelity active filtering.

Technical Context

The ADA4817-2ACPZ-R7 employs Analog Devices' proprietary eXtra fast complementary bipolar (XFCB) process to achieve ultralow noise (4 nV/√Hz, 2.5 fA/√Hz) while maintaining 1050 MHz bandwidth and 870 V/µs slew rate. Its FET input stage supports common-mode input range from −VS to (+VS − 2.8 V) and features 1.3 pF common-mode / 0.1 pF differential input capacitance - critical for stable transimpedance gain and minimal phase shift in high-gain photodiode configurations.

Each amplifier includes dedicated power-down pins (PD1, PD2) referenced to +VS, enabling independent channel disablement with <2 mA quiescent current per channel. The 16-lead LFCSP (CP-16-20) package integrates an exposed thermal pad and low-distortion pinout that reduces second-harmonic distortion and simplifies layout for high-frequency PCB routing.

Key Specifications

Parameter	Value and Actual Design Meaning
−3 dB Bandwidth	1050 MHz at G = 1, RL = 100 Ω - enables full-spectrum signal capture up to UHF without gain-dependent roll-off.
Slew Rate	870 V/µs - supports clean 2 V step response with 9 ns 0.1% settling, essential for fast pulse amplification.
Input Voltage Noise	4 nV/√Hz at 100 kHz - minimizes added noise in low-light photodiode applications where signal currents are sub-picoamp.
Input Bias Current	2 pA typical - preserves high DC accuracy in high-impedance sensor interfaces and transimpedance feedback networks.
Linear Output Current	40 mA - drives 100 Ω loads to ±3.5 V swing on ±5 V supplies, sufficient for direct ADC input buffering without external gain stages.
Supply Range	5 V to 10 V total (±2.5 V to ±5 V or +3 V/−2 V) - supports flexible single/dual supply deployment in mixed-signal systems.
Power-Down Current	1.5 mA per amplifier - reduces system-level standby power by >92% versus active mode (19 mA), ideal for battery-powered instrumentation.

Pinout & Package

The ADA4817-2ACPZ-R7 is housed in a 4 mm × 4 mm, 16-lead LFCSP (CP-16-20) package with exposed thermal pad (EPAD) for enhanced thermal dissipation (θJA = 64°C/W on 4-layer JEDEC board). Pinout follows low-distortion layout: feedback pins (FB1/FB2) adjacent to respective outputs (OUT1/OUT2), separate positive/negative supply pins per amplifier (+VS1/−VS1, +VS2/−VS2), and isolated power-down controls (PD1/PD2).

Pin/Terminal	Circuit Role	Design Meaning
1, 9	−IN1, −IN2	Inverting inputs - connect to feedback network nodes; low 0.1 pF differential capacitance minimizes phase lag in closed-loop configurations.
2, 10	+IN1, +IN2	Noninverting inputs - high 500 GΩ input resistance and 1.3 pF common-mode capacitance enable stable DC-coupled sensor interfacing.
4, 12	−VS2, −VS1	Negative supply rails - independently routed to reduce inter-channel crosstalk in dual-amplifier layouts.
5, 13	OUT2, OUT1	Amplifier outputs - capable of sourcing/sinking 40 mA linearly; placed adjacent to FB2/FB1 to minimize parasitic inductance in feedback paths.
6, 14	+VS2, +VS1	Positive supply rails - decoupling capacitors must be placed within 2 mm of these pins to maintain stability at >500 MHz.
7, 15	PD2, PD1	Power-down controls - logic-high (>+VS − 0.9 V) enables amplifier; logic-low (<+VS − 3.5 V) disables it, reducing quiescent current to 1.5 mA.
8, 16	FB2, FB1	Feedback pins - internal connection to output stage; used in G = 1 configurations to bypass external resistors and eliminate resistor-induced noise/distortion.

Key Features

Feature	Design Value
FET input with 2 pA bias current	Enables ultra-high-impedance photodiode and piezoelectric sensor interfaces without significant DC error or leakage-induced drift.
1050 MHz −3 dB bandwidth	Supports full-power signal acquisition up to 60 MHz (FPBW) and preserves fidelity in 10–50 MHz RF/IF sampling front ends.
Dedicated per-channel power-down	Allows dynamic power gating in multi-channel DAQ systems - e.g., disabling unused ADC driver channels during idle cycles.
Low-distortion 16-lead LFCSP pinout	Reduces second-harmonic distortion by >10 dB versus conventional layouts and eliminates need for complex ground plane partitioning.
Exposed thermal pad (EPAD)	Lowers junction-to-board thermal resistance to 14°C/W, enabling sustained 19 mA/channel operation at +105°C ambient without derating.

Applications

Photodiode Preamp	Data Acquisition Front End
Use Scenario: Amplifying weak, fast current pulses from silicon photomultipliers (SiPMs) in time-of-flight PET scanners. IC Role / Device Role / Timing Role: Transimpedance amplifier converting sub-nA photocurrents into clean 1–2 V pulses with <9 ns rise time and minimal overshoot. Use Value: 4 nV/√Hz input noise and 2 pA bias current preserve SNR in low-photon-count detection; 1050 MHz bandwidth captures full pulse spectrum up to 500 MHz.	Use Scenario: Buffering and driving 16-bit, 100 MSPS SAR ADC inputs in automated test equipment (ATE). IC Role / Device Role / Timing Role: High-fidelity unity-gain buffer isolating multiplexer output from ADC input capacitance, ensuring <0.1% settling within 9 ns. Use Value: 870 V/µs slew rate and 40 mA linear output current drive 100 Ω + 10 pF ADC input loads without distortion or droop at full scale.
Active Low-Pass Filter	High-Speed Instrumentation Amplifier Stage
Use Scenario: 4th-order Butterworth anti-aliasing filter preceding a 125 MSPS pipeline ADC in radar receiver IF chain. IC Role / Device Role / Timing Role: Dual-channel filter section implementing 20 MHz cutoff with matched gain/phase response across both paths. Use Value: Independent PD1/PD2 pins allow synchronized channel shutdown during calibration; 1.3 pF input capacitance ensures predictable pole placement with 1% tolerance film resistors.	Use Scenario: First-stage gain block in portable ultrasound beamformer, amplifying 5–15 MHz echo signals from piezoelectric transducers. IC Role / Device Role / Timing Role: Low-noise, high-Z voltage amplifier providing 20 dB fixed gain before programmable gain stage and ADC. Use Value: 2.5 fA/√Hz current noise prevents degradation of transducer's inherent SNR; −90 dBc HD2 at 10 MHz meets medical imaging spectral purity requirements.

Photodiode Preamp

Data Acquisition Front End

Use Scenario: Amplifying weak, fast current pulses from silicon photomultipliers (SiPMs) in time-of-flight PET scanners.

IC Role / Device Role / Timing Role: Transimpedance amplifier converting sub-nA photocurrents into clean 1–2 V pulses with <9 ns rise time and minimal overshoot.

Use Value: 4 nV/√Hz input noise and 2 pA bias current preserve SNR in low-photon-count detection; 1050 MHz bandwidth captures full pulse spectrum up to 500 MHz.

Use Scenario: Buffering and driving 16-bit, 100 MSPS SAR ADC inputs in automated test equipment (ATE).

IC Role / Device Role / Timing Role: High-fidelity unity-gain buffer isolating multiplexer output from ADC input capacitance, ensuring <0.1% settling within 9 ns.

Use Value: 870 V/µs slew rate and 40 mA linear output current drive 100 Ω + 10 pF ADC input loads without distortion or droop at full scale.

Active Low-Pass Filter

High-Speed Instrumentation Amplifier Stage

Use Scenario: 4th-order Butterworth anti-aliasing filter preceding a 125 MSPS pipeline ADC in radar receiver IF chain.

IC Role / Device Role / Timing Role: Dual-channel filter section implementing 20 MHz cutoff with matched gain/phase response across both paths.

Use Value: Independent PD1/PD2 pins allow synchronized channel shutdown during calibration; 1.3 pF input capacitance ensures predictable pole placement with 1% tolerance film resistors.

Use Scenario: First-stage gain block in portable ultrasound beamformer, amplifying 5–15 MHz echo signals from piezoelectric transducers.

IC Role / Device Role / Timing Role: Low-noise, high-Z voltage amplifier providing 20 dB fixed gain before programmable gain stage and ADC.

Use Value: 2.5 fA/√Hz current noise prevents degradation of transducer's inherent SNR; −90 dBc HD2 at 10 MHz meets medical imaging spectral purity requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADA4817-2ARMZ	Same die, 8-lead SOIC package (RD-8-4); θJA = 79°C/W vs. 64°C/W; no exposed pad; higher input offset drift (25–75 µV/°C vs. 10–45 µV/°C).	Preferred for prototyping or legacy through-hole boards; unsuitable for thermally constrained, high-density layouts requiring EPAD thermal relief.	Select ADA4817-2ARMZ only when SOIC footprint compatibility or hand-soldering is required; ADA4817-2ACPZ-R7 is superior for production-grade high-frequency designs.
LMH6629MA/NOPB	Single-channel, 1.5 GHz GBW, 900 V/µs slew; higher 5.5 nV/√Hz noise; no power-down pins; 8-lead SOIC only.	Used in single-channel, ultra-wideband applications where dual-channel integration is unnecessary; lacks per-channel power management.	Choose LMH6629MA/NOPB only for single-amplifier, >1 GHz small-signal bandwidth needs; ADA4817-2ACPZ-R7 provides better noise, dual-channel integration, and power-down flexibility.

Compared with ADA4817-2ARMZ, the ADA4817-2ACPZ-R7 offers 23% lower thermal resistance and tighter offset drift for stable high-temperature operation; versus LMH6629MA/NOPB, it delivers 23% lower voltage noise and integrated dual-channel power-down - making it optimal for compact, thermally demanding, multi-channel instrumentation.

Availability

ADA4817-2ACPZ-R7 is available at Aetrix Electronics and suitable for photodiode preamplifiers, high-speed data acquisition front ends, and active filtering applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for medical, test & measurement, and industrial OEM programs.

Supply support for ADA4817-2ACPZ-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 Wilmington, MA, with design centers worldwide and ISO 9001-certified manufacturing.

The ADA4817-2ACPZ-R7 belongs to Analog Devices' FastFET™ op amp product line, engineered specifically for high-speed, low-noise signal conditioning in photodiode interfaces, precision data acquisition, and wideband instrumentation - leveraging XFCB process technology for simultaneous speed, noise, and input impedance optimization.

FAQ

What is the maximum operating temperature range for the ADA4817-2ACPZ-R7?

The ADA4817-2ACPZ-R7 is rated for continuous operation from −40°C to +105°C ambient temperature. This extended industrial range is validated across all electrical specifications in the datasheet, including input offset voltage drift (10–45 µV/°C for LFCSP), bandwidth, and power-down functionality - making it suitable for harsh-environment applications such as industrial PLC I/O modules and automotive radar signal chains.

Does the ADA4817-2ACPZ-R7 require external compensation for unity-gain stability?

No, the ADA4817-2ACPZ-R7 is internally compensated for unity-gain stability. It maintains phase margin >45° in G = 1 configurations with RL = 100 Ω, as confirmed by Figure 8 and Table 1 in the Rev. I datasheet. However, for capacitive loads >2 pF, a small series snubber resistor (10–50 Ω) at the output or feedback capacitor (0.5–2 pF) is recommended to suppress peaking - especially at G = 2 where the ADA4817-2 shows slightly more sensitivity than the single-channel ADA4817-1.

How does the power-down feature of the ADA4817-2ACPZ-R7 function electrically?

The ADA4817-2ACPZ-R7 uses two independent power-down pins (PD1 and PD2), each referenced to its respective +VS supply rail. An amplifier is enabled when PDx voltage exceeds (+VS − 0.9 V); it enters low-power state (<2 mA quiescent current) when PDx falls below (+VS − 3.5 V). For ±5 V supplies, this corresponds to >4.1 V (enable) and <1.5 V (disable). Unused PD pins must be tied to +VS to guarantee startup - floating pins may cause undefined behavior.

Can the ADA4817-2ACPZ-R7 drive a 50 Ω transmission line directly?

Yes, the ADA4817-2ACPZ-R7 can drive a 50 Ω load with 40 mA linear output current, delivering ±3.5 V swing on ±5 V supplies. However, for optimal 50 Ω source termination, use a series 25 Ω resistor at the output to match characteristic impedance and prevent reflections - as the amplifier's open-circuit output impedance is not 50 Ω. This configuration preserves bandwidth and minimizes distortion while meeting standard RF interface requirements.

What is the purpose of the exposed pad (EPAD) on the ADA4817-2ACPZ-R7 package?

The exposed pad (EPAD) on the ADA4817-2ACPZ-R7 provides a low-thermal-resistance path (θJC = 14°C/W) from the silicon die to the PCB copper plane. It must be soldered to a solid thermal pad connected to a large ground or negative supply plane using ≥6 thermal vias. Proper EPAD connection reduces junction temperature rise by ~15°C under full-load conditions, preventing thermal runaway and ensuring parametric stability over the full −40°C to +105°C operating range.

ADA4817-2ACPZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: FastFET™

Package/Case:: 16-WQFN Exposed Pad, CSP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Voltage Feedback

Number of Circuits:: 2

Output Type:: -

Slew Rate:: 870V/µs

Gain Bandwidth Product:: 410 MHz

-3db Bandwidth:: 1.05 GHz

Current - Input Bias:: 2 pA

Voltage - Input Offset:: 400 µV

Current - Supply:: 19mA (x2 Channels)

Current - Output / Channel:: 40 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 10 V

Operating Temperature:: -40°C ~ 105°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-LFCSP (4x4)

ADA4817-2ACPZ-R7 FAQ

1.How can I place an order for ADA4817-2ACPZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4817-2ACPZ-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 ADA4817-2ACPZ-R7 reliable?

The price and inventory of ADA4817-2ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4817-2ACPZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4817-2ACPZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4817-2ACPZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4817-2ACPZ-R7?

ADA4817-2ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4817-2ACPZ-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 ADA4817-2ACPZ-R7?

For technical support, including ADA4817-2ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4817-2ACPZ-R7 requirements.

6.How does Aetrix verify that ADA4817-2ACPZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4817-2ACPZ-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 ADA4817-2ACPZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4817-2ACPZ-R7?

All ADA4817-2ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4817-2ACPZ-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 ADA4817-2ACPZ-R7 part is unused and in its original packaging.

Return procedure for ADA4817-2ACPZ-R7:

1.Submit a request within 90 days.

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

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