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Analog Devices Inc. ADA4891-1ARJZ-RL
- Part No.:
- ADA4891-1ARJZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADA4891-1ARJZ-RL.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:20,399
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Product details
Overview
ADA4891-1ARJZ-RL from Analog Devices is a single-channel, CMOS, rail-to-rail output voltage feedback amplifier optimized for high-speed video and imaging signal conditioning. It delivers 220 MHz −3 dB bandwidth (G = +1), 170 V/μs slew rate, 28 ns settling to 0.1%, and rail-to-rail output swing within 50 mV of supply rails at 2.7 V to 5.5 V operation - enabling use in automotive infotainment front-end buffers and CCD contact image sensor interfaces.
For engineers reviewing the ADA4891-1ARJZ-RL datasheet, ADA4891-1ARJZ-RL pinout, ADA4891-1ARJZ-RL application, or ADA4891-1ARJZ-RL equivalent, key selection criteria include its 25 MHz 0.1 dB gain flatness (G = +2, RL = 150 Ω), 0.05% differential gain error, 0.25° differential phase error, and 79 dBc SFDR at 1 MHz - all critical for NTSC-compliant consumer video reconstruction and coaxial cable driver designs.
Technical Context
The ADA4891-1ARJZ-RL employs a voltage-feedback architecture with true single-supply capability and input common-mode range extending 300 mV below the negative rail. Its CMOS input stage provides 5 GΩ input resistance and 3.2 pF input capacitance, supporting stable operation with capacitive loads up to 47 pF when properly compensated.
It features a rail-to-rail output stage capable of sourcing 125 mA (1% THD, 1 MHz) and sinking 307 mA, with thermal performance characterized across −40°C to +125°C. The device lacks power-down functionality - a feature exclusive to the ADA4891-3/ADA4891-4 variants - confirming its role as a dedicated high-fidelity signal path amplifier.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 220 MHz at G = +1 (5 V supply); enables wideband video and clock buffer applications without gain peaking. |
| Slew Rate | 170 V/μs (rising), 210 V/μs (falling); supports fast transient response in active filters and multiplexer outputs. |
| Settling Time | 28 ns to 0.1% (G = +2, 2 V step); ensures accurate pixel-level timing in imaging pipelines. |
| Output Swing | Within 50 mV of both rails (RL = 1 kΩ); maximizes dynamic range in single-supply 3.3 V or 5 V systems. |
| Distortion | −79 dBc HD2 / −93 dBc HD3 at 1 MHz (G = +1); meets NTSC and PAL video fidelity requirements. |
| Supply Range | 2.7 V to 5.5 V; compatible with modern low-voltage embedded vision and automotive domain controllers. |
| Quiescent Current | 4.4 mA per amplifier; balances speed and power efficiency in battery-sensitive portable video gear. |
Pinout & Package
The ADA4891-1ARJZ-RL is packaged in a 5-lead SOT-23 (RJ-5) surface-mount package with exposed pad for thermal enhancement. Pin 1 is OUT; Pin 2 is −IN; Pin 3 is +IN; Pin 4 is −VS; Pin 5 is +VS. No pins are internally connected to NC functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Amplifier output node | Drives 150 Ω coaxial lines or 1 kΩ loads with rail-to-rail swing and <28 ns settling. |
| −IN (Pin 2) | Inverting input | Accepts differential or single-ended signals; 5 GΩ input resistance minimizes loading on source. |
| +IN (Pin 3) | Noninverting input | Supports unity-gain follower or high-Z sensor interfaces (e.g., photodiode preamp). |
| −VS (Pin 4) | Negative supply rail | Reference for input common-mode range (extends to −VS − 0.3 V); may be grounded in single-supply configs. |
| +VS (Pin 5) | Positive supply rail | Bias source for internal circuitry; supplies 4.4 mA quiescent current and enables 125 mA output drive. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 50 mV of both supply rails, preserving full signal amplitude in low-voltage systems. |
| Video-optimized distortion | 0.05% differential gain / 0.25° differential phase error ensures broadcast-grade color fidelity. |
| High-speed settling | 28 ns to 0.1% supports >35 MSPS sampling in contact image sensor readout chains. |
| Low input bias current | ±50 pA max enables high-impedance photodiode and passive filter interfaces without offset drift. |
| Wide supply range | Operates from 2.7 V to 5.5 V, allowing direct integration into 3.3 V FPGA I/O banks or 5 V legacy video subsystems. |
Applications
| Automotive Infotainment Front-End | Consumer Video Reconstruction |
|---|---|
Use Scenario: Buffering RGB/YUV signals from display processor to LVDS transmitter in head-unit displays. IC Role / Device Role / Timing Role: High-fidelity voltage follower with minimal group delay and gain flatness over 25 MHz. Use Value: Preserves 0.1 dB gain flatness and <0.3° phase error across NTSC/PAL baseband spectrum, eliminating color smearing. | Use Scenario: Driving 75 Ω coaxial cables in DVD player video output stages. IC Role / Device Role / Timing Role: Unity-gain line driver with 125 mA output current and 220 MHz bandwidth. Use Value: Maintains signal integrity up to 1080i resolution with <0.05% differential gain error for accurate chroma reproduction. |
| CCD Contact Image Sensor Interface | Active Filter Stage in Imaging Pipeline |
Use Scenario: Amplifying analog pixel outputs from linear CCD arrays before ADC sampling. IC Role / Device Role / Timing Role: Low-noise (9 nV/√Hz), fast-settling (28 ns) gain-of-two amplifier with rail-to-rail output. Use Value: Enables >35 MSPS line rates while maintaining SNR >70 dB and minimizing inter-pixel crosstalk. | Use Scenario: Implementing 4th-order Butterworth anti-aliasing filter in medical endoscope video processing. IC Role / Device Role / Timing Role: High-speed op-amp in dual-stage Sallen-Key topology with 220 MHz GBW. Use Value: Achieves <−70 dB stopband attenuation at 2× Nyquist frequency without phase-induced edge ringing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4891-1ARMZ-R7 | Same silicon, 8-lead SOIC_N package; higher θJA (115°C/W vs. 146°C/W), lower thermal efficiency. | Preferred for prototyping or through-hole-compatible PCBs; not suitable for space-constrained mobile imaging modules. | Select when board layout allows larger footprint and thermal mass improves stability under sustained load. |
| LMH6629MA/NOPB | Higher bandwidth (1.5 GHz), higher supply current (12.5 mA), no rail-to-rail output (clips ~1.2 V from rails). | Better for RF IF amplification; unsuitable for single-supply video reconstruction requiring full swing. | Choose only when >1 GHz small-signal bandwidth is mandatory and rail-to-rail output is not required. |
Compared with ADA4891-1ARMZ-R7, the ADA4891-1ARJZ-RL offers superior thermal performance in compact layouts but requires tighter SMT placement control; versus LMH6629MA/NOPB, it trades raw bandwidth for video-optimized linearity, lower power, and true rail-to-rail operation essential for baseband signal fidelity.
Availability
ADA4891-1ARJZ-RL is available at Aetrix Electronics and suitable for automotive infotainment systems, consumer video equipment, and contact image sensor interfaces requiring stable component supply across extended temperature ranges (−40°C to +125°C) and long production lifecycles.
Supply support for ADA4891-1ARJZ-RL 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.
The ADA4891 family was designed specifically for cost-sensitive, high-speed signal conditioning in imaging and video systems - delivering automotive-qualified reliability, rail-to-rail output, and video-grade distortion performance in compact packages.
FAQ
What is the maximum operating temperature for the ADA4891-1ARJZ-RL?
The ADA4891-1ARJZ-RL is specified to operate continuously from −40°C to +125°C, meeting AEC-Q100 Grade 1 requirements for automotive under-hood and infotainment applications. This extended range is validated across all electrical parameters in the Rev. F datasheet, including bandwidth, distortion, and output drive capability.
Does the ADA4891-1ARJZ-RL support power-down functionality?
No, the ADA4891-1ARJZ-RL does not include power-down pins. Power-down capability is exclusive to the ADA4891-3 and ADA4891-4 variants (PD1–PD3 pins). The ADA4891-1ARJZ-RL is a single-channel amplifier optimized for always-on, low-latency signal paths such as video reconstruction filters and CCD buffers.
Can the ADA4891-1ARJZ-RL drive a 75 Ω coaxial cable directly?
Yes - the ADA4891-1ARJZ-RL delivers 125 mA output current with 0.05% differential gain error into 150 Ω loads (standard video termination), and maintains 25 MHz 0.1 dB gain flatness. For 75 Ω, use G = +2 configuration with series 37.5 Ω resistor at output to match impedance and preserve video fidelity.
What is the input common-mode voltage range of the ADA4891-1ARJZ-RL?
The input common-mode voltage range of the ADA4891-1ARJZ-RL extends from −VS − 0.3 V to +VS − 0.8 V. In a 3.3 V single-supply configuration (−VS = 0 V, +VS = 3.3 V), this allows inputs from −0.3 V to +2.5 V - accommodating signals below ground and supporting level-shifting in mixed-supply systems.
Is the ADA4891-1ARJZ-RL pin-compatible with other members of the ADA4891 family?
No - the ADA4891-1ARJZ-RL uses a 5-lead SOT-23 (RJ-5) package with unique pinout (OUT, −IN, +IN, −VS, +VS). The ADA4891-2, -3, and -4 use 8- or 14-lead packages with different pin counts and arrangements. Direct substitution requires PCB redesign; only functional equivalence - not mechanical compatibility - applies.
ADA4891-1ARJZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 210V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 240 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 2.5 mV
- Current - Supply:
- 4.4mA
- 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:
- SOT-23-5
ADA4891-1ARJZ-RL FAQ
1.How can I place an order for ADA4891-1ARJZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4891-1ARJZ-RL 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 ADA4891-1ARJZ-RL reliable?
The price and inventory of ADA4891-1ARJZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4891-1ARJZ-RL is usually 5 days.
3.What payment methods are accepted for ADA4891-1ARJZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4891-1ARJZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4891-1ARJZ-RL?
ADA4891-1ARJZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4891-1ARJZ-RL 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 ADA4891-1ARJZ-RL?
For technical support, including ADA4891-1ARJZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4891-1ARJZ-RL requirements.
6.How does Aetrix verify that ADA4891-1ARJZ-RL is sourced from the original manufacturer or authorized distributors?
All ADA4891-1ARJZ-RL 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 ADA4891-1ARJZ-RL meets industry standards.
7.What is the process for return or replacement of ADA4891-1ARJZ-RL?
All ADA4891-1ARJZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4891-1ARJZ-RL, 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 ADA4891-1ARJZ-RL part is unused and in its original packaging.
Return procedure for ADA4891-1ARJZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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