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Analog Devices Inc. AD818ARZ-REEL
- Part No.:
- AD818ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD818ARZ-REEL.pdf
- Description:
- IC AMP VOLTAGE FEEDBACK 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,790
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Product details
Overview
AD818ARZ-REEL from Analog Devices is a low-cost, low-power voltage-feedback video operational amplifier optimized for gain ≥ +2 or ≤ –1 applications. It delivers 55 MHz 0.1 dB bandwidth (G = +2), 0.01% differential gain error, 0.05° differential phase error, and 50 mA output drive-enabling high-fidelity back-terminated 75 Ω video line driving in professional cameras and broadcast equipment.
For engineers reviewing the AD818ARZ-REEL datasheet, AD818ARZ-REEL pinout, AD818ARZ-REEL application, or AD818ARZ-REEL equivalent, key selection considerations include single-supply (+5 V) operation, 80 ns settling to 0.01%, 500 V/μs slew rate, and SOIC-8 package compatibility with video signal conditioning, cable drivers, and CCD imaging front-ends.
Technical Context
The AD818ARZ-REEL employs a degenerated NPN differential pair feeding a folded-cascode gain stage and class-AB emitter-follower output buffer-enabling high current delivery while maintaining low distortion. Its architecture supports stable operation with capacitive loads ≤10 pF and closed-loop gains ≥+2 without compensation.
It is fully specified across ±5 V to ±15 V dual supplies and 0 V/+5 V single supply, with quiescent current capped at 7.5 mA. Input common-mode range extends to ±13.4 V (±15 V supplies) and +4.3 V/–0.9 V (0 V/+5 V), supporting DC-coupled video signal paths and level-shifting interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| 0.1 dB Bandwidth | 55 MHz at G = +2 (±15 V); ensures flat video response through NTSC/PAL subcarriers and HD baseband signals |
| Slew Rate | 500 V/μs (±15 V); enables faithful reproduction of fast video transients without slewing-induced distortion |
| Settling Time | 80 ns to 0.01% (10 V step); critical for precision video sampling, digitization, and multi-tap timing systems |
| Differential Gain Error | 0.01% (NTSC, ±5 V, RL = 150 Ω); preserves color fidelity in composite video transmission |
| Output Current | 50 mA min (±5 V/±15 V); drives 75 Ω back-terminated coaxial cables directly without external buffers |
| Supply Current | 7.5 mA max (±5 V); enables power-sensitive portable video gear and multi-channel camera modules |
| Input Offset Voltage | 2 mV max (±5 V to ±15 V); minimizes DC shift in cascaded video gain stages requiring tight baseline control |
Pinout & Package
AD818ARZ-REEL is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch, 5.00 mm × 4.00 mm body, and gull-wing leads. The package supports automated pick-and-place and reflow soldering for high-volume video module assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (–) | Connects to potentiometer wiper for input offset trimming; required only when <2 mV residual offset is critical |
| 2 | Inverting Input (–IN) | High-impedance summing node for inverting configurations; requires balancing resistor for bias current cancellation |
| 3 | Noninverting Input (+IN) | High-impedance reference node; used in noninverting gain ≥+2 setups with minimal input current error |
| 4 | –VS | Negative supply rail; must be bypassed with 0.1 μF ceramic capacitor placed ≤5 mm from pin |
| 5 | Output | Class-AB emitter-follower output capable of sourcing/sinking 50 mA into 150 Ω loads |
| 6 | +VS | Positive supply rail; accepts +5 V (single) or ±5 V to ±15 V (dual); bypassing essential for PSRR >80 dB |
| 7 | Offset Null (+) | Connects to potentiometer end for symmetrical null adjustment; unused pins must remain open |
| 8 | No Connect (NC) | Internally unconnected; must be left floating-no routing or grounding permitted |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Functional at 0 V/+5 V with input common-mode down to +0.9 V and output swing to 1.5 V/3.5 V-enables direct interface with 3.3 V logic and ADCs |
| Video-optimized AC performance | 0.01% DG / 0.05° DP at 3.58 MHz NTSC subcarrier ensures broadcast-grade color accuracy without post-processing |
| Capacitive load drive | Stable with ≤10 pF load capacitance; eliminates need for isolation resistors in PCB traces or connector stubs |
| Low distortion at high frequency | –63 dB THD at 1 MHz (±15 V); maintains signal integrity in wideband analog video digitizers and test instrumentation |
| Thermal robustness | Specified over –40°C to +85°C with 155°C/W junction-to-ambient thermal resistance-suitable for enclosed camera housings |
Applications
| Professional Video Camera Front-End | HD Broadcast Monitor Signal Conditioning |
|---|---|
Use Scenario: Amplifying and buffering composite video output from CCD/CMOS sensor signal chains before HDMI encoder or SDI transmitter. IC Role / Device Role / Timing Role: Final-stage video op amp providing gain ≥+2, DC coupling, and 75 Ω back-termination drive capability. Use Value: Eliminates external buffer ICs while preserving 0.01% differential gain-reducing BOM count and board area in compact camera modules. |
Use Scenario: Driving long 75 Ω coaxial cables from monitor video processing ASICs to BNC outputs. IC Role / Device Role / Timing Role: High-current line driver ensuring 0.1 dB flatness to 55 MHz and minimal group delay variation across HD baseband spectrum. Use Value: Maintains pixel-level timing integrity and color fidelity over 30 m cable runs without equalization or repeaters. |
| Medical Endoscope Video Interface | Industrial Machine Vision Acquisition |
Use Scenario: Conditioning analog RGB or Y/C signals from miniature endoscope image sensors for real-time display and recording. IC Role / Device Role / Timing Role: Low-power (7.5 mA), single-supply (+5 V) video amplifier enabling battery-operated portable diagnostic systems. Use Value: Delivers broadcast-grade video performance within strict thermal and power envelopes-critical for handheld medical devices. |
Use Scenario: Buffering high-speed analog outputs from line-scan or area-scan industrial cameras before digitization. IC Role / Device Role / Timing Role: Fast-settling (80 ns to 0.01%) driver ensuring accurate pixel amplitude capture during high-frame-rate acquisition. Use Value: Prevents amplitude droop and edge smearing in 100+ fps machine vision systems-improving OCR and defect detection accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6702MA/NOPB | Higher 1.7 GHz GBW, 1000 V/μs slew rate, but 15 mA IQ and no single-supply optimization | Better for RF/IF amplification; less suitable for low-power +5 V video line driving | Select LMH6702MA/NOPB only when >100 MHz bandwidth and ultra-low distortion (<–70 dBc) are mandatory |
| THS3201DGN | 1.8 GHz GBW, 4700 V/μs slew rate, but 20 mA IQ and limited differential gain spec (0.05% typical) | Targeted at high-speed test equipment; lacks NTSC/PAL-validated video specs | Choose THS3201DGN for pulse amplification or wideband active filtering-not for broadcast video fidelity |
Compared with LMH6702MA/NOPB and THS3201DGN, AD818ARZ-REEL uniquely balances video-specific AC performance (0.01% DG), low power (7.5 mA), and single-supply readiness-making it the optimal choice for cost-sensitive, thermally constrained, and standards-compliant video signal chains.
Availability
AD818ARZ-REEL is available at Aetrix Electronics and suitable for professional video cameras, broadcast monitors, medical endoscopes, and industrial machine vision systems requiring stable component supply, RoHS-compliant packaging, and tape-and-reel logistics for SMT production.
Supply support for AD818ARZ-REEL 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 and ISO 9001-certified manufacturing.
The AD818ARZ-REEL belongs to Analog Devices' precision video amplifier product line, engineered specifically for broadcast, medical, and industrial video signal conditioning where differential gain/phase accuracy, low power, and single-supply operation are system-critical.
FAQ
What is the maximum capacitive load the AD818ARZ-REEL can drive stably?
The AD818ARZ-REEL is characterized for stable operation with capacitive loads up to 10 pF without external compensation. This includes PCB trace capacitance, connector stubs, and scope probe loading. Driving heavier loads (e.g., >15 pF) risks peaking or oscillation unless a small feedback capacitor (1–5 pF) is added in parallel with the feedback resistor to neutralize parasitic poles.
Can the AD818ARZ-REEL operate from a single +3.3 V supply?
No-the AD818ARZ-REEL is not specified for +3.3 V operation. Its absolute minimum single-supply voltage is +5 V, and its input common-mode range at +5 V is +0.9 V to +4.3 V. Attempting +3.3 V operation results in severely degraded output swing, increased distortion, and potential failure to meet video specifications such as differential gain error.
Is the AD818ARZ-REEL pin-compatible with the AD818AR-REEL?
Yes-AD818ARZ-REEL and AD818AR-REEL share identical SOIC-8 (R-8) pinout, electrical specifications, and thermal characteristics. The "Z" suffix denotes RoHS compliance (lead-free terminations), while both are supplied on 13″ tape-and-reel. No PCB layout changes are required when substituting AD818ARZ-REEL for AD818AR-REEL.
Does the AD818ARZ-REEL require external offset nulling in typical video applications?
No-offset nulling is optional. The AD818ARZ-REEL has a maximum input offset voltage of 2 mV, which introduces negligible DC error in AC-coupled video paths. Nulling (via pins 1 and 7) is only necessary in DC-coupled applications demanding <0.5 mV residual offset, such as precision video DAC output buffers or calibration subsystems.
What is the thermal resistance (θJA) of the AD818ARZ-REEL package?
The AD818ARZ-REEL in SOIC-8 (R-8) package has a junction-to-ambient thermal resistance (θJA) of 155°C/W under standard JEDEC test conditions (1s2p board). With proper PCB copper pour (≥1 in² 2-oz copper connected to exposed pad equivalents), effective θJA can be reduced to ~65°C/W-supporting continuous 7.5 mA operation at +85°C ambient.
AD818ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Voltage Feedback
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 130 MHz
- Slew Rate:
- 500V/µs
- Current - Supply:
- 7 mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply, Single/Dual (±):
- 5V ~ 36V, ±2.5V ~ 18V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
AD818ARZ-REEL FAQ
1.How can I place an order for AD818ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD818ARZ-REEL 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 AD818ARZ-REEL reliable?
The price and inventory of AD818ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD818ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD818ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD818ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD818ARZ-REEL?
AD818ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD818ARZ-REEL 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 AD818ARZ-REEL?
For technical support, including AD818ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD818ARZ-REEL requirements.
6.How does Aetrix verify that AD818ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD818ARZ-REEL 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 AD818ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD818ARZ-REEL?
All AD818ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD818ARZ-REEL, 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 AD818ARZ-REEL part is unused and in its original packaging.
Return procedure for AD818ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD818ARZ-REEL Tags
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LT6552CS8#PBF
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LT6206IMS8#TRPBF
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LT1252CS8#PBF
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MAX4310EUA+
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AD829ARZ
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