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

Analog Devices Inc. ADA4891-3ARUZ-R7

Name: ADA4891-3ARUZ-R7
Brand: Analog Devices Inc.
SKU: ADA4891-3ARUZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4891-3ARUZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: ADA4891-3ARUZ-R7.pdf

Description:: IC CMOS 3 CIRCUIT 14TSSOP

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Product details

Overview

ADA4891-3ARUZ-R7 from Analog Devices is a triple-channel, rail-to-rail output CMOS high-speed operational amplifier optimized for video, imaging, and active filter applications. It delivers 220 MHz −3 dB bandwidth (G = +1), 170 V/µs slew rate, 28 ns settling time to 0.1%, and operates from 2.7 V to 5.5 V single supply with output swing within 50 mV of both rails.

For engineers reviewing the ADA4891-3ARUZ-R7 datasheet, ADA4891-3ARUZ-R7 pinout, ADA4891-3ARUZ-R7 application, or ADA4891-3ARUZ-R7 equivalent, this page provides verified specifications, package mapping to 14-lead TSSOP (RU-14), functional pin definitions, automotive-grade qualification, and validated alternative options for video reconstruction, CCD buffering, and coaxial cable driving.

Technical Context

The ADA4891-3ARUZ-R7 integrates three independent high-speed amplifiers in one monolithic CMOS die, each featuring true single-supply operation with input common-mode range extending 300 mV below the negative rail and rail-to-rail output stage enabling full dynamic range utilization. Its architecture supports wideband noninverting and inverting configurations up to G = +10 with stable performance into 150 Ω loads.

Unlike dual or quad variants, the ADA4891-3 includes three dedicated power-down pins (PD1, PD2, PD3) enabling independent channel disable with 49 ns turn-off and 166 ns turn-on times at 5 V, reducing quiescent current per disabled amplifier to 0.8 mA while maintaining fast recovery for burst-mode signal paths.

Key Specifications

Parameter	Value and Actual Design Meaning
−3 dB Bandwidth	220 MHz at G = +1 (5 V supply); enables baseband video and high-resolution imaging signal amplification without gain peaking.
Slew Rate	170 V/µs (rising), 210 V/µs (falling); supports clean 2 V step response with minimal overshoot in high-speed data acquisition.
Settling Time	28 ns to 0.1% (G = +2); critical for precision timing in multiplexed sensor interfaces and ADC driver stages.
Output Swing	0.08 V to 4.90 V (RL = 150 Ω, 5 V supply); delivers >98% supply rail utilization for maximum SNR in low-voltage systems.
Distortion	−79 dBc HD2 / −93 dBc HD3 at 1 MHz (G = +1); meets NTSC/PAL video fidelity requirements with <0.05% differential gain error.
Supply Range	2.7 V to 5.5 V single supply; compatible with modern battery-powered and automotive 3.3 V/5 V domains without level-shifting.
Quiescent Current	4.4 mA per amplifier (13.2 mA total); balances speed and power for portable imaging modules and infotainment head units.

Pinout & Package

ADA4891-3ARUZ-R7 is housed in a 14-lead TSSOP (RU-14) package, pin-compatible with the 14-lead SOIC_N (R-14) variant per Analog Devices' ordering guide. Thermal resistance θ_JA is 108°C/W on JEDEC 4-layer board.

Pin/Terminal	Circuit Role	Design Meaning
1 (PD1)	Power-down control for Amp1	Active-high logic input; drives Amp1 into 0.8 mA standby mode when ≥2.4 V (5 V supply).
2 (OUT2)	Amplifier 2 output	Rail-to-rail voltage source capable of sourcing 205 mA / sinking 307 mA into 150 Ω load.
3 (PD2)	Power-down control for Amp2	Independent enable/disable for second channel; supports dynamic channel gating in multi-sensor systems.
4 (–IN2)	Inverting input of Amp2	High-impedance node (5 GΩ) with 3.2 pF capacitance; requires matched layout for inverting gain stability.
5 (PD3)	Power-down control for Amp3	Third dedicated shutdown pin; allows selective activation of only required channels to minimize system power.
6 (+IN2)	Noninverting input of Amp2	Common-mode range extends −VS − 0.3 V to +VS − 0.8 V; supports ground-referenced video inputs.
7 (+VS)	Positive supply rail	Accepts 2.7 V to 5.5 V; PSRR = 65 dB ensures immunity to digital supply noise in mixed-signal PCBs.
8 (–VS)	Negative supply rail	Ground-referenced operation supported; CMRR = 88 dB over 0 V to 3.0 V common-mode range.
9 (–IN3)	Inverting input of Amp3	Electrically identical to –IN2; shares same bias current spec (±50 pA typical) and offset drift (6 µV/°C).
10 (+IN3)	Noninverting input of Amp3	Enables three independent buffer or gain stages in compact footprint-ideal for RGB video path separation.
11 (OUT1)	Amplifier 1 output	First channel output; matches OUT2/OUT3 performance including 125 mA linear output current at −40 dBc.
12 (OUT3)	Amplifier 3 output	Third rail-to-rail output; all three outputs fully specified for simultaneous 25 MHz 0.1 dB gain flatness (G = +2).
13 (+IN1)	Noninverting input of Amp1	Primary input for first channel; used in photodiode preamp configurations with low input bias current.
14 (–IN1)	Inverting input of Amp1	Supports active filter topologies; stable with RF = 453 Ω per datasheet Table 1 for G = +2 configuration.

Key Features

Feature	Design Value
Triple-channel integration	Three independent high-speed op-amps in one RU-14 package reduces board area by >40% vs. discrete solutions for RGB or multi-sensor analog front-ends.
Individual power-down pins	PD1–PD3 allow per-channel disable with sub-100 ns switching-enabling adaptive power management in battery-constrained imaging modules.
Rail-to-rail output swing	Output reaches within 50 mV of both supply rails at 150 Ω load, maximizing dynamic range for 8-bit–12-bit ADC drivers without external level-shifting.
Automotive qualification	Specified from −40°C to +125°C and qualified per AEC-Q100; suitable for ADAS camera modules and infotainment video processing units.
Low distortion at 1 MHz	−79 dBc HD2 ensures minimal harmonic contamination in ultrasound receive chains and contact image sensor buffers requiring clean baseband amplification.

Applications

Consumer Video Reconstruction	Automotive Camera Interface
Use Scenario: Reconstructing composite NTSC/PAL video signals after decoding, requiring flat frequency response and minimal phase/gain distortion. IC Role / Device Role / Timing Role: Triple amplifier configured as 3× video reconstruction filters (luma + two chroma channels) with G = +2 and 150 Ω termination. Use Value: 0.05% differential gain error and 0.25° differential phase error preserve color fidelity across 4.43 MHz chroma band without post-processing correction.	Use Scenario: Front-facing ADAS camera module output conditioning before digitization via MIPI CSI-2 serializer. IC Role / Device Role / Timing Role: Buffering and driving three analog video streams (RGB or YUV) over short PCB traces to ADC inputs with minimal crosstalk. Use Value: −80 dB all-hostile crosstalk at 5 MHz prevents interference between adjacent channels in tightly spaced automotive PCB layouts.
CCD/Contact Image Sensor Buffer	Coaxial Cable Driver
Use Scenario: Amplifying low-current, high-impedance outputs from linear CCD arrays or contact image sensors used in document scanners. IC Role / Device Role / Timing Role: Noninverting unity-gain buffer with high input impedance (5 GΩ) and low input bias current (±50 pA) preserving signal integrity. Use Value: Input common-mode range down to −VS − 0.3 V allows direct connection to sensor outputs referenced near ground, eliminating level-shifters.	Use Scenario: Driving 75 Ω coaxial cables from FPGA or ASIC video outputs in broadcast equipment or medical displays. IC Role / Device Role / Timing Role: High-current output stage delivering 125 mA linear drive into 150 Ω (equivalent to 75 Ω terminated) with 28 ns settling. Use Value: 220 MHz bandwidth and 25 MHz 0.1 dB gain flatness ensure minimal rise-time degradation and amplitude ripple over SD/HD video bandwidths.

Consumer Video Reconstruction

Automotive Camera Interface

Use Scenario: Reconstructing composite NTSC/PAL video signals after decoding, requiring flat frequency response and minimal phase/gain distortion.

IC Role / Device Role / Timing Role: Triple amplifier configured as 3× video reconstruction filters (luma + two chroma channels) with G = +2 and 150 Ω termination.

Use Value: 0.05% differential gain error and 0.25° differential phase error preserve color fidelity across 4.43 MHz chroma band without post-processing correction.

Use Scenario: Front-facing ADAS camera module output conditioning before digitization via MIPI CSI-2 serializer.

IC Role / Device Role / Timing Role: Buffering and driving three analog video streams (RGB or YUV) over short PCB traces to ADC inputs with minimal crosstalk.

Use Value: −80 dB all-hostile crosstalk at 5 MHz prevents interference between adjacent channels in tightly spaced automotive PCB layouts.

CCD/Contact Image Sensor Buffer

Coaxial Cable Driver

Use Scenario: Amplifying low-current, high-impedance outputs from linear CCD arrays or contact image sensors used in document scanners.

IC Role / Device Role / Timing Role: Noninverting unity-gain buffer with high input impedance (5 GΩ) and low input bias current (±50 pA) preserving signal integrity.

Use Value: Input common-mode range down to −VS − 0.3 V allows direct connection to sensor outputs referenced near ground, eliminating level-shifters.

Use Scenario: Driving 75 Ω coaxial cables from FPGA or ASIC video outputs in broadcast equipment or medical displays.

IC Role / Device Role / Timing Role: High-current output stage delivering 125 mA linear drive into 150 Ω (equivalent to 75 Ω terminated) with 28 ns settling.

Use Value: 220 MHz bandwidth and 25 MHz 0.1 dB gain flatness ensure minimal rise-time degradation and amplitude ripple over SD/HD video bandwidths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADA4891-3ARZ	Same silicon, 14-lead SOIC_N (R-14) package; θ_JA = 162°C/W vs. 108°C/W for RU-14; no thermal advantage in high-density layouts.	Preferred for through-hole prototyping or legacy SOIC footprints; less suitable for space-constrained automotive modules.	Select ADA4891-3ARZ only if board stack-up or assembly process mandates SOIC; RU-14 offers superior thermal performance and smaller footprint.
LMH6629MA/NOPB	Single-channel, 1.5 GHz GBW, higher power (12.5 mA), no power-down pins; requires three devices to match ADA4891-3ARUZ-R7 channel count.	Better for ultra-wideband RF IF stages; lacks integrated triple-channel + power management needed for compact video front-ends.	Choose LMH6629MA/NOPB only for >500 MHz small-signal applications where ADA4891-3ARUZ-R7's 220 MHz bandwidth is insufficient.

Compared with ADA4891-3ARZ, the ADA4891-3ARUZ-R7 provides 35% lower thermal resistance and 40% smaller PCB area; compared with LMH6629MA/NOPB, it delivers integrated triple-channel operation with per-amplifier power control-reducing BOM count and layout complexity in multi-signal video systems.

Availability

ADA4891-3ARUZ-R7 is available at Aetrix Electronics and suitable for consumer video reconstruction, automotive camera interface, and CCD/Contact image sensor buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for ADA4891-3ARUZ-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.

The ADA4891 family was engineered specifically for cost-sensitive, high-speed analog signal conditioning in imaging and video systems-balancing 220 MHz bandwidth, rail-to-rail output, and triple-channel integration in compact TSSOP packaging.

FAQ

What is the operating temperature range for the ADA4891-3ARUZ-R7?

The ADA4891-3ARUZ-R7 is specified to operate from −40°C to +125°C and qualified for automotive applications per AEC-Q100. This extended range ensures reliable performance in under-hood camera modules, industrial scanners, and outdoor display drivers where ambient temperatures exceed standard commercial limits. All key parameters-including bandwidth, slew rate, and distortion-are guaranteed across this full range.

Does the ADA4891-3ARUZ-R7 support single-supply operation with ground-referenced inputs?

Yes, the ADA4891-3ARUZ-R7 supports true single-supply operation with an input common-mode voltage range extending to −VS − 0.3 V. When powered from +VS = 3.3 V and −VS = 0 V, inputs can swing down to −0.3 V, allowing direct connection to ground-referenced video sources or sensor outputs without level-shifting circuitry. CMRR remains 87 dB over 0 V to 1.5 V common-mode range.

How does the power-down feature work on the ADA4891-3ARUZ-R7?

The ADA4891-3ARUZ-R7 includes three dedicated power-down pins (PD1, PD2, PD3), one per amplifier. Applying ≥2.4 V (at 5 V supply) disables the corresponding channel, reducing its quiescent current to 0.8 mA. Turn-off time is 49 ns and turn-on time is 166 ns, enabling rapid channel activation in burst-mode imaging or multiplexed sensor readouts without compromising system responsiveness.

Can the ADA4891-3ARUZ-R7 drive a 75 Ω coaxial cable directly?

Yes-the ADA4891-3ARUZ-R7 delivers 125 mA linear output current and is characterized into 150 Ω loads (equivalent to 75 Ω doubly-terminated). With G = +2 and proper 75 Ω source termination, it maintains 25 MHz 0.1 dB gain flatness and −80 dB crosstalk, making it suitable for SD/HD video transmission over short coax runs (<10 m) without external line drivers.

What is the recommended feedback resistor value for G = +2 configuration on the ADA4891-3ARUZ-R7?

For G = +2 operation, Analog Devices specifies RF = 453 Ω in the ADA4891-3/ADA4891-4 data sheet (Table 1, 5 V operation). This value ensures optimal bandwidth, phase margin, and 0.1 dB gain flatness performance into 150 Ω loads. Using RF = 453 Ω with RG = 453 Ω yields precise +2 gain while minimizing noise gain peaking and stability risks in high-frequency video applications.

ADA4891-3ARUZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: CMOS

Number of Circuits:: 3

Output Type:: Rail-to-Rail

Slew Rate:: 210V/µs

Gain Bandwidth Product:: 105 MHz

-3db Bandwidth:: 220 MHz

Current - Input Bias:: 2 pA

Voltage - Input Offset:: 2.5 mV

Current - Supply:: 4.4mA (x3 Channels)

Current - Output / Channel:: 125 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

ADA4891-3ARUZ-R7 FAQ

1.How can I place an order for ADA4891-3ARUZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4891-3ARUZ-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 ADA4891-3ARUZ-R7 reliable?

The price and inventory of ADA4891-3ARUZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4891-3ARUZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4891-3ARUZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4891-3ARUZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4891-3ARUZ-R7?

ADA4891-3ARUZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4891-3ARUZ-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 ADA4891-3ARUZ-R7?

For technical support, including ADA4891-3ARUZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4891-3ARUZ-R7 requirements.

6.How does Aetrix verify that ADA4891-3ARUZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4891-3ARUZ-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 ADA4891-3ARUZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4891-3ARUZ-R7?

All ADA4891-3ARUZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4891-3ARUZ-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 ADA4891-3ARUZ-R7 part is unused and in its original packaging.

Return procedure for ADA4891-3ARUZ-R7:

1.Submit a request within 90 days.

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

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