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Analog Devices Inc. ADA4851-1YRJZ-R2
- Part No.:
- ADA4851-1YRJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
ADA4851-1YRJZ-R2.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,054
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Product details
Overview
ADA4851-1YRJZ-R2 from Analog Devices is a single-channel, rail-to-rail output voltage-feedback operational amplifier optimized for high-speed video and general-purpose signal conditioning. It delivers 130 MHz −3 dB bandwidth, 375 V/μs slew rate, and 55 ns settling time to 0.1%, operating from ±5 V, +5 V, or +3 V supplies. Its 0.08% differential gain and 0.09° differential phase support NTSC video reconstruction in automotive infotainment systems.
For engineers reviewing the ADA4851-1YRJZ-R2 datasheet, ADA4851-1YRJZ-R2 pinout, ADA4851-1YRJZ-R2 application, or ADA4851-1YRJZ-R2 equivalent, key selection criteria include rail-to-rail output swing (within 60 mV of rails), power-down capability, low 2.5 mA quiescent current per amplifier, and SOT-23-6 packaging for space-constrained PCB layouts.
Technical Context
The ADA4851-1YRJZ-R2 employs a voltage-feedback architecture with fully differential input stage and Class AB output stage, enabling stable operation at gains ≥ +1 with minimal peaking. Its internal compensation supports 150 Ω load drive at 11 MHz 0.1 dB flatness and maintains stability with up to 10 pF capacitive load.
It features a dedicated POWER DOWN pin (Pin 5) that reduces quiescent current to 0.25 mA while retaining fast turn-on (≤60 ns) and turn-off (≤0.7 μs) timing. Input common-mode range extends 200 mV below negative rail and to within 2.2 V of positive rail, supporting true single-supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 130 MHz at G = +1, 5 V supply - enables baseband video and clock buffer applications up to ~100 MHz |
| Slew Rate | 375 V/μs at ±5 V - supports clean 2 V step response without slewing distortion in high-speed pulse circuits |
| Output Swing | Rail-to-rail: within 60 mV of either supply rail - maximizes dynamic range in low-voltage systems (e.g., +3 V) |
| Quiescent Current | 2.5 mA per amplifier - balances speed and power efficiency for battery-sensitive or thermally constrained designs |
| Differential Gain / Phase | 0.08% / 0.09° at NTSC, RL = 150 Ω - meets broadcast-grade video fidelity requirements |
| Input Offset Voltage | 0.6 mV typical - minimizes DC error in precision gain stages and active filters |
| Power-Down Current | 0.25 mA - reduces system standby power without requiring external biasing or sequencing |
Pinout & Package
ADA4851-1YRJZ-R2 is housed in a 6-lead SOT-23 (RJ-6) package with exposed pad for thermal enhancement. Pin 1 is VOUT, Pin 2 is −IN, Pin 3 is +IN, Pin 4 is −VS, Pin 5 is POWER DOWN, and Pin 6 is +VS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives 150 Ω loads directly for video line driving |
| 2 (−IN) | Inverting input | Accepts differential input signals; common-mode range extends 200 mV below −VS |
| 3 (+IN) | Non-inverting input | High-impedance node (0.5 MΩ differential); used for unity-gain buffers and active filter inputs |
| 4 (−VS) | Negative supply | Supports dual-supply (±5 V) or single-supply (ground-referenced) operation |
| 5 (POWER DOWN) | Enable/disable control | Active-low logic input; pulls quiescent current to 0.25 mA when low (≤1.1 V) |
| 6 (+VS) | Positive supply | Operates from 2.7 V to 12 V; enables wide-input-range sensor interfaces and portable equipment |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 60 mV of both supply rails across full temperature range (−40°C to +125°C), preserving signal headroom in low-voltage systems |
| Video-optimized performance | 0.08% differential gain and 0.09° differential phase meet NTSC/PAL broadcast standards for consumer and automotive video routing |
| Power-down mode | Reduces supply current to 0.25 mA with <60 ns wake-up latency - ideal for intermittent-sampling data acquisition and power-gated subsystems |
| Wide supply range | 2.7 V to 12 V operation allows direct integration into 3.3 V, 5 V, and ±5 V systems without level-shifting or LDOs |
| Stable with capacitive loads | Maintains phase margin with up to 10 pF load capacitance - simplifies layout for long trace or connector-driven outputs |
Applications
| Automotive Infotainment Video Routing | Professional Video Switcher Output Stage |
|---|---|
Use Scenario: Driving RGB or CVBS signals from SoC video outputs to display modules or HDMI encoders in vehicle dashboards. IC Role / Device Role / Timing Role: Single-supply video buffer amplifying composite or component video with minimal group delay and distortion. Use Value: 0.08% differential gain ensures color fidelity across temperature; rail-to-rail output eliminates need for AC-coupling capacitors in 3.3 V systems. | Use Scenario: Final-stage amplification in broadcast-grade SDI or analog video switchers handling multiple source inputs. IC Role / Device Role / Timing Role: High-fidelity output driver delivering 150 Ω terminated video signals with sub-55 ns settling for frame-accurate switching. Use Value: 130 MHz bandwidth and 375 V/μs slew rate preserve edge integrity during rapid source transitions without overshoot or ringing. |
| Active Low-Pass Filter for Sensor Signal Conditioning | High-Speed Clock Buffer for FPGA I/O |
Use Scenario: Second-order active filter cleaning analog sensor outputs (e.g., MEMS accelerometers) before ADC sampling. IC Role / Device Role / Timing Role: Unity-gain stable op amp implementing Sallen-Key topology with precise pole placement. Use Value: Low 0.6 mV offset and 10 nV/√Hz noise minimize DC drift and SNR degradation in precision measurement paths. | Use Scenario: Distributing 50–100 MHz clock signals from oscillator to multiple FPGA banks with matched skew. IC Role / Device Role / Timing Role: Low-jitter, low-propagation-delay buffer isolating clock source from fanout loading. Use Value: 55 ns settling to 0.1% and 11 MHz 0.1 dB flatness ensure clean clock edges and minimal duty-cycle distortion at 100 MHz. |
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 |
|---|---|---|---|
| ADA4891-1ARJZ-R7 | Lower bandwidth (105 MHz), no power-down pin, same SOT-23-6 package | Lacks enable control; suited for always-on video paths where power gating is unnecessary | Select when power-down functionality is not required and cost sensitivity outweighs 25 MHz bandwidth loss |
| LMH6629MA/NOPB | Higher bandwidth (1.5 GHz), higher quiescent current (12.5 mA), SOIC-8 package | Requires PCB redesign for larger footprint and thermal management; over-spec for video but fits RF front-end buffering | Select only when >500 MHz small-signal bandwidth is mandatory and board area/power budget permit |
Compared with ADA4891-1ARJZ-R7 and LMH6629MA/NOPB, the ADA4851-1YRJZ-R2 uniquely balances 130 MHz bandwidth, rail-to-rail output, power-down control, and SOT-23-6 size-making it optimal for space- and power-constrained video and clock distribution where moderate speed suffices.
Availability
ADA4851-1YRJZ-R2 is available at Aetrix Electronics and suitable for automotive infotainment systems, professional video switchers, and high-speed clock distribution requiring stable component supply, extended temperature support (−40°C to +125°C), and RoHS-compliant packaging.
Supply support for ADA4851-1YRJZ-R2 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 ADA4851 family was designed specifically for cost-sensitive, high-speed video and general-purpose signal conditioning applications demanding rail-to-rail output, low power, and robust AC performance across automotive and industrial temperature ranges.
FAQ
What is the maximum operating supply voltage for ADA4851-1YRJZ-R2?
The ADA4851-1YRJZ-R2 supports a total supply voltage range of 2.7 V to 12 V, with absolute maximum ratings specifying ±6.3 V on each supply rail. At ±5 V operation, it achieves its highest slew rate (375 V/μs) and bandwidth (130 MHz). Operation beyond ±6.3 V risks permanent damage per Absolute Maximum Ratings in the datasheet.
Does ADA4851-1YRJZ-R2 support true single-supply operation with input signals near ground?
Yes. The ADA4851-1YRJZ-R2 accepts input common-mode voltages down to −0.2 V relative to −VS (i.e., 200 mV below ground in single-supply configurations), enabling direct interfacing with ground-referenced sensors or DAC outputs without level-shifting circuitry.
How does the POWER DOWN pin function on ADA4851-1YRJZ-R2?
The POWER DOWN pin (Pin 5) is an active-low enable input. When pulled ≤1.1 V (e.g., grounded), ADA4851-1YRJZ-R2 enters low-power state with quiescent current reduced to 0.25 mA. When driven >1.6 V (e.g., to +VS), full operation resumes within ≤60 ns. This pin requires no external pull-up for normal use.
Can ADA4851-1YRJZ-R2 drive a 150 Ω video load while maintaining NTSC video specifications?
Yes. At G = +2, RL = 150 Ω, and ±5 V supply, ADA4851-1YRJZ-R2 delivers 0.08% differential gain and 0.09° differential phase under NTSC conditions - meeting broadcast video fidelity requirements. Its 11 MHz 0.1 dB flatness ensures minimal amplitude variation across baseband video spectrum.
What is the thermal resistance (θJA) of the ADA4851-1YRJZ-R2 SOT-23-6 package?
The ADA4851-1YRJZ-R2 in 6-lead SOT-23 (RJ-6) package has a junction-to-ambient thermal resistance (θJA) of 170°C/W on a JEDEC-standard 4-layer board. This value assumes standard copper pour and via patterns; adding thermal vias under the exposed pad can reduce effective θJA by up to 30%.
ADA4851-1YRJZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 375V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 105 MHz
- Current - Input Bias:
- 2.2 µA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 2.9mA
- Current - Output / Channel:
- 83 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ADA4851-1YRJZ-R2 FAQ
1.How can I place an order for ADA4851-1YRJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4851-1YRJZ-R2 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 ADA4851-1YRJZ-R2 reliable?
The price and inventory of ADA4851-1YRJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4851-1YRJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADA4851-1YRJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4851-1YRJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4851-1YRJZ-R2?
ADA4851-1YRJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4851-1YRJZ-R2 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 ADA4851-1YRJZ-R2?
For technical support, including ADA4851-1YRJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4851-1YRJZ-R2 requirements.
6.How does Aetrix verify that ADA4851-1YRJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADA4851-1YRJZ-R2 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 ADA4851-1YRJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADA4851-1YRJZ-R2?
All ADA4851-1YRJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4851-1YRJZ-R2, 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 ADA4851-1YRJZ-R2 part is unused and in its original packaging.
Return procedure for ADA4851-1YRJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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