My Inquiry
My Account
Analog Devices Inc. ADA4891-3ARZ-RL
- Part No.:
- ADA4891-3ARZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4891-3ARZ-RL.pdf
- Description:
- IC CMOS 3 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADA4891-3ARZ-RL 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 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 ADA4891-3ARZ-RL datasheet, ADA4891-3ARZ-RL pinout, ADA4891-3ARZ-RL application, or ADA4891-3ARZ-RL equivalent, key selection criteria include its integrated power-down pins (PD1–PD3), 14-lead SOIC package, −40°C to +125°C automotive-grade temperature range, and verified performance in coaxial cable drivers and contact image sensor buffers.
Technical Context
The ADA4891-3ARZ-RL implements a fully differential input stage with 5 GΩ input resistance and 3.2 pF input capacitance, enabling wide common-mode range (−VS − 0.3 V to +VS − 0.8 V) and 88 dB CMRR. Its rail-to-rail output stage supports 125 mA linear output current at −40 dBc distortion and maintains 0.1 dB gain flatness to 25 MHz under 150 Ω load.
It features three independent power-down control pins (PD1, PD2, PD3), each with 2.4 V enable threshold (5 V operation), 166 ns turn-on time, and 49 ns turn-off time - allowing selective channel shutdown without affecting other amplifiers in the triple configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 220 MHz at G = +1 (enables high-fidelity video signal amplification up to 1080p timing) |
| Slew Rate | 170 V/μs (supports fast transient response in active filters and clock buffers) |
| Settling Time | 28 ns to 0.1% (ensures accurate pulse fidelity in CCD and CIS readout paths) |
| Supply Range | 2.7 V to 5.5 V single supply (compatible with 3.3 V and 5 V system rails) |
| Output Swing | Within 50 mV of rails (maximizes dynamic range in low-voltage imaging front-ends) |
| Power-Down Current | 0.8 mA total (reduces idle power by >80% per disabled channel) |
| Operating Temp | −40°C to +125°C (qualified for automotive infotainment and ADAS modules) |
Pinout & Package
ADA4891-3ARZ-RL is housed in a 14-lead SOIC_N (R-14) package with exposed pad not electrically connected. Pin assignments are validated per Figure 4 of Rev. F datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PD1) | Power-down control for Amp 1 | Active-high logic input; ≥2.4 V enables amplifier, <1.3 V disables with 49 ns turn-off |
| 2 (OUT2) | Output of Amplifier 2 | Capable of sourcing 205 mA / sinking 307 mA into 150 Ω loads |
| 3 (PD2) | Power-down control for Amp 2 | Independent channel disable; no crosstalk impact on Amp 1 or Amp 3 |
| 4 (−IN2) | Inverting input of Amplifier 2 | High-impedance node (5 GΩ) with 3.2 pF capacitance; requires matched layout for video stability |
| 5 (PD3) | Power-down control for Amp 3 | Third independent shutdown path; enables dynamic power scaling in multi-channel systems |
| 6 (+IN2) | Non-inverting input of Amplifier 2 | Supports input common-mode range down to −VS − 0.3 V (enables ground-referenced video inputs) |
| 7 (OUT1) | Output of Amplifier 1 | Rail-to-rail output; swings 0.01 V to 4.98 V on 5 V supply with 1 kΩ load |
| 8 (OUT3) | Output of Amplifier 3 | Identical drive capability to OUT1/OUT2; supports parallel termination in coaxial line drivers |
| 9 (−IN3) | Inverting input of Amplifier 3 | Matched to −IN1/−IN2; critical for balanced photodiode preamp configurations |
| 10 (+IN3) | Non-inverting input of Amplifier 3 | Same input specs as +IN1/+IN2; allows identical biasing across all three channels |
| 11 (−VS) | Negative supply rail | Accepts 0 V (single-supply) or negative voltage; supports true single-supply operation |
| 12 (+IN1) | Non-inverting input of Amplifier 1 | Primary input for first channel; used in unity-gain video reconstruction filters |
| 13 (−IN1) | Inverting input of Amplifier 1 | Configured for inverting gain stages in active filter topologies |
| 14 (+VS) | Positive supply rail | Supplies all three amplifiers; bypassing with 0.1 μF ceramic required at pin |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent power-down control | Enables per-channel sleep mode in battery-powered imaging modules without PCB redesign |
| 0.1 dB gain flatness to 25 MHz | Meets NTSC/PAL video reconstruction requirements with <0.05% differential gain error |
| Rail-to-rail output with 125 mA drive | Drives 150 Ω coaxial cables directly without external buffers in consumer video interfaces |
| Low 9 nV/√Hz input voltage noise | Preserves SNR in photodiode preamplifier stages for contact image sensors |
| Automotive qualification (−40°C to +125°C) | Validated for use in automotive infotainment head units and surround-view camera ECUs |
Applications
| Automotive Camera Signal Conditioning | Consumer Video Reconstruction Filter |
|---|---|
Use Scenario: Front-facing ADAS camera module processing analog RGB or YUV video signals before ADC digitization. IC Role / Device Role / Timing Role: Triple amplifier configured as DC-coupled buffer, gain stage, and reconstruction filter driver. Use Value: 25 MHz 0.1 dB flatness and 0.25° differential phase error ensure minimal color distortion in real-time video streams. | Use Scenario: HDMI or component video output stage in set-top boxes and Blu-ray players. IC Role / Device Role / Timing Role: Final-stage video driver reconstructing composite sync and luminance/chrominance signals. Use Value: Rail-to-rail output swing and 125 mA drive capability eliminate need for external level-shifting circuitry. |
| Contact Image Sensor (CIS) Buffer | Coaxial Cable Driver for Security Cameras |
Use Scenario: High-resolution document scanner using linear CIS array with 12-bit ADC interface. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth buffer between CIS analog output and ADC input. Use Value: 9 nV/√Hz input voltage noise and 220 MHz bandwidth preserve fine text detail and edge sharpness. | Use Scenario: Analog HD-over-Coax (AHD) security camera transmitter driving 100 m RG-59 cable. IC Role / Device Role / Timing Role: Single-ended to differential driver with 150 Ω source termination. Use Value: 170 V/μs slew rate and 28 ns settling support 1080p60 pixel clock timing integrity over long cables. |
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 |
|---|---|---|---|
| ADA4891-3ARMZ | 14-lead TSSOP package (RU-14); identical electrical specs and pinout; 108°C/W θJA vs. 162°C/W for SOIC | Better thermal performance in space-constrained PCB layouts; same automotive temp rating | Select ADA4891-3ARMZ for thermally dense designs; ADA4891-3ARZ-RL preferred for legacy SOIC footprints. |
| LMH6629MA/NOPB | Single-channel, 1.5 GHz GBW, higher power (12.5 mA), no power-down pins, SOIC-8 | Higher bandwidth but no multi-channel integration or channel disable; not AEC-Q100 qualified | Use LMH6629MA/NOPB only when >500 MHz small-signal bandwidth is mandatory and triple-channel integration is unnecessary. |
Compared with ADA4891-3ARMZ, ADA4891-3ARZ-RL offers superior board-level thermal margin in high-ambient environments but larger footprint; versus LMH6629MA/NOPB, it provides integrated triple-channel operation and automotive qualification at lower power, trading off raw bandwidth for system-level integration and reliability.
Availability
ADA4891-3ARZ-RL is available at Aetrix Electronics and suitable for automotive infotainment systems, contact image sensor modules, and coaxial video transmission systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4891-3ARZ-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, video, and automotive applications - delivering rail-to-rail output, low distortion, and integrated power management in standard packages.
FAQ
What is the maximum operating temperature for ADA4891-3ARZ-RL?
The ADA4891-3ARZ-RL is specified for continuous operation from −40°C to +125°C and is qualified for automotive applications per AEC-Q100. This rating applies across full electrical specifications including bandwidth, slew rate, and output drive capability - confirmed in Tables 1 and 2 of Rev. F datasheet under TMIN to TMAX conditions.
Does ADA4891-3ARZ-RL support true single-supply operation with input below ground?
Yes. The ADA4891-3ARZ-RL supports true single-supply operation with an input common-mode voltage range extending to −VS − 0.3 V. When powered from 0 V and +5 V, it accepts inputs down to −0.3 V, enabling direct coupling of ground-referenced video or sensor signals without level-shifting circuitry.
How does the power-down function work on ADA4891-3ARZ-RL?
The ADA4891-3ARZ-RL has three dedicated power-down pins (PD1, PD2, PD3) - one per amplifier. Driving any PD pin below 1.3 V (at 5 V supply) disables its corresponding amplifier, reducing quiescent current to 0.8 mA total. Turn-off time is 49 ns; turn-on time is 166 ns. All three channels operate independently.
Can ADA4891-3ARZ-RL drive a 150 Ω coaxial cable directly?
Yes. The ADA4891-3ARZ-RL delivers 125 mA linear output current and maintains 0.1 dB gain flatness to 25 MHz into 150 Ω loads - meeting SMPTE 259M and AHD analog HD video standards. Its 170 V/μs slew rate and 28 ns settling ensure pixel-clock integrity for 1080p60 signals without external buffering.
What is the input voltage noise density of ADA4891-3ARZ-RL at 1 MHz?
The ADA4891-3ARZ-RL has an input voltage noise density of 9 nV/√Hz at 1 MHz, as specified in Table 1 (5 V operation) and Table 2 (3 V operation) of the Rev. F datasheet. This low noise supports high-fidelity signal conditioning in photodiode preamplifiers and contact image sensor front-ends.
ADA4891-3ARZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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-SOIC
ADA4891-3ARZ-RL FAQ
1.How can I place an order for ADA4891-3ARZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4891-3ARZ-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 ADA4891-3ARZ-RL reliable?
The price and inventory of ADA4891-3ARZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4891-3ARZ-RL is usually 5 days.
3.What payment methods are accepted for ADA4891-3ARZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4891-3ARZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4891-3ARZ-RL?
ADA4891-3ARZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4891-3ARZ-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 ADA4891-3ARZ-RL?
For technical support, including ADA4891-3ARZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4891-3ARZ-RL requirements.
6.How does Aetrix verify that ADA4891-3ARZ-RL is sourced from the original manufacturer or authorized distributors?
All ADA4891-3ARZ-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 ADA4891-3ARZ-RL meets industry standards.
7.What is the process for return or replacement of ADA4891-3ARZ-RL?
All ADA4891-3ARZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4891-3ARZ-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 ADA4891-3ARZ-RL part is unused and in its original packaging.
Return procedure for ADA4891-3ARZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADA4891-3ARZ-RL Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
