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Analog Devices Inc. AD8005ARZ
- Part No.:
- AD8005ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8005ARZ.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:168
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Product details
Overview
AD8005ARZ from Analog Devices is a current feedback amplifier optimized for ultralow-power, high-speed signal conditioning in portable and battery-powered systems. It delivers 270 MHz −3 dB bandwidth (G = +1), 280 V/µs slew rate (G = +2), and 400 µA quiescent supply current on ±5 V supplies, enabling high dynamic performance with minimal power draw in A/D buffering and video signal paths.
For engineers reviewing the AD8005ARZ datasheet, AD8005ARZ pinout, AD8005ARZ application, or AD8005ARZ equivalent, this page provides verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative options for power-sensitive, high-bandwidth analog signal chains.
Technical Context
The AD8005ARZ employs a current feedback architecture that decouples gain-setting from bandwidth limitations-enabling stable operation up to 270 MHz at unity gain while maintaining 0.1 dB gain flatness to 30 MHz. Its transimpedance input stage yields low input impedance at the inverting node (260 Ω) and high impedance at the noninverting node (90 MΩ), requiring matched feedback resistors per gain configuration.
It operates across −40°C to +85°C with specified performance on both ±5 V and +5 V single supplies, delivering 0.11% differential gain error and 0.4° differential phase error (NTSC, G = +2) for video-grade fidelity. Input voltage noise is 4.0 nV/√Hz at 10 MHz, and THD reaches −63 dBc at 1 MHz with 2 Vp-p output swing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 270 MHz at G = +1 (±5 V); enables full HD video signal amplification without attenuation |
| Slew Rate | 280 V/µs at G = +2 (±5 V); supports fast transient response for 2 V step signals in ≤28 ns |
| Quiescent Current | 400 µA typical on ±5 V; draws only 4 mW total, critical for extended battery life |
| Input Voltage Noise | 4.0 nV/√Hz at 10 MHz; preserves SNR in wideband sensor and ADC buffer stages |
| Differential Gain Error | 0.11% at NTSC (G = +2); meets broadcast video linearity requirements |
| Supply Range | ±5 V or +5 V single supply; supports industrial embedded systems with mixed-rail power domains |
| Operating Temp | −40°C to +85°C; qualified for use in outdoor instrumentation and medical handhelds |
Pinout & Package
The AD8005ARZ is supplied in an 8-lead SOIC_N (R-8) package, measuring 5.00 mm × 3.99 mm × 1.50 mm with standard JEDEC MS-012-AA footprint and gull-wing leads.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must be left floating or tied to ground per layout best practice |
| 2 | Inverting Input (−IN) | Low-impedance current-summing node (260 Ω); requires precise resistor matching for stability |
| 3 | Noninverting Input (+IN) | High-impedance voltage-input node (90 MΩ); sensitive to stray capacitance >1.5 pF |
| 4 | Negative Supply (−VS) | Connect to −5 V (bipolar) or ground (single-supply); bypass with 0.01 µF ceramic capacitor |
| 5 | No Connect (NC) | Internally unconnected; no external connection required |
| 6 | Output (OUT) | Capable of ±3.7 V swing into 1 kΩ (±5 V); drives capacitive loads with series isolation resistor |
| 7 | Positive Supply (+VS) | Connect to +5 V (bipolar) or +5 V (single-supply); bypass with 0.01 µF ceramic + 10 µF tantalum |
| 8 | No Connect (NC) | Internally unconnected; avoid routing traces or vias beneath this pad |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow Power Consumption | 400 µA quiescent current enables >10× longer runtime vs. comparable 150–200 mA op amps in portable medical instruments |
| Current Feedback Architecture | Decouples bandwidth from gain setting-270 MHz available at G = +1, 170 MHz at G = +2 without compensation |
| Video-Optimized Linearity | 0.11% differential gain / 0.4° differential phase error meets NTSC broadcast standards for RGB/YUV signal paths |
| Single-Supply Operation | Specified for +5 V rail with 1.5 V to 3.5 V input common-mode range-supports level-shifting into 12-bit ADC front-ends |
| Robust Capacitive Load Drive | Stable with ≥100 pF loads when using recommended series resistor (e.g., 5 Ω at G = +2), eliminating need for external isolation networks |
Applications
| Portable Medical Instrumentation | Battery-Powered Video Acquisition |
|---|---|
Use Scenario: Amplifying low-amplitude ECG or EEG sensor outputs in handheld diagnostic devices with 24-hour battery life targets. IC Role / Device Role / Timing Role: Signal-conditioning buffer between electrode interface and 12-bit SAR ADC, operating on +5 V single supply. Use Value: 400 µA quiescent current reduces system power by ~3.5 mW vs. legacy op amps, directly extending usable runtime without compromising 200 kHz bandwidth. | Use Scenario: Driving composite video signals in field-deployable surveillance cameras powered by Li-ion batteries. IC Role / Device Role / Timing Role: NTSC-compliant video buffer with gain = +2, driving 75 Ω coaxial cable and downstream decoder IC. Use Value: 0.11% differential gain error ensures color fidelity over temperature, avoiding manual calibration in ruggedized enclosures. |
| Loop-Powered Industrial Sensors | Communication Test Equipment |
Use Scenario: Signal conditioning in 4–20 mA loop-powered pressure transmitters where headroom below 24 V is constrained. IC Role / Device Role / Timing Role: High-speed buffer for amplified bridge output prior to sigma-delta ADC sampling at 1 MSPS. Use Value: 280 V/µs slew rate supports accurate capture of fast pressure transients without slewing-induced distortion in 16-bit measurements. | Use Scenario: Wideband signal path in benchtop RF signal analyzers requiring low-noise, high-fidelity intermediate-frequency (IF) amplification. IC Role / Device Role / Timing Role: IF buffer stage between mixer and digitizer, operating at G = +1 with 270 MHz bandwidth. Use Value: 4.0 nV/√Hz input voltage noise preserves dynamic range in 100 MHz IF bands, minimizing degradation of SFDR in spectrum analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6702MA/NOPB | Higher quiescent current (10.5 mA), 1.8 GHz bandwidth, 3000 V/µs slew rate | Designed for RF/IF gain blocks-not optimized for battery life or video linearity | Select when bandwidth >1 GHz is required and power budget allows >25× higher supply current |
| ADA4817-1ARZ | FET-input voltage feedback topology, 1 GHz bandwidth, 250 V/µs slew rate, 1.3 mA IQ | Superior DC precision (100 µV VOS) but lacks NTSC-qualified video specs | Prefer for high-impedance sensor interfaces needing low bias current (<10 pA), not video or ultralow-power use cases |
Compared with LMH6702MA/NOPB and ADA4817-1ARZ, the AD8005ARZ uniquely balances sub-mA quiescent current, NTSC-grade video linearity, and 270 MHz bandwidth-making it the only viable option for portable, battery-constrained systems requiring broadcast-compliant analog signal conditioning.
Availability
AD8005ARZ is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered video acquisition, and loop-powered industrial sensors requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AD8005ARZ 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 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 AD8005ARZ belongs to Analog Devices' ultralow-power, high-speed current feedback amplifier product line-designed specifically for portable, battery-operated equipment where dynamic performance must coexist with multi-day operational runtime.
FAQ
What supply voltages does the AD8005ARZ support?
The AD8005ARZ is fully characterized for operation on ±5 V dual supplies and +5 V single supply. On ±5 V, it delivers 270 MHz bandwidth and 400 µA quiescent current; on +5 V, bandwidth reduces to 225 MHz and quiescent current drops to 350 µA typical. Input common-mode range is ±3.8 V on dual supplies and 1.5 V to 3.5 V on single supply-enabling direct interfacing with mid-rail referenced ADCs.
Does the AD8005ARZ require external compensation components?
No, the AD8005ARZ is internally compensated and stable for gains ≥ +1 without external components. Its current feedback architecture eliminates traditional dominant-pole compensation. However, feedback resistor values must match datasheet recommendations (e.g., 2.49 kΩ for G = +2 in SOIC_N) to maintain phase margin and prevent peaking or oscillation.
Can the AD8005ARZ drive 75 Ω video loads directly?
The AD8005ARZ can drive 75 Ω loads but requires careful layout and optional series resistance to maintain stability and video fidelity. With proper 0.01 µF supply bypassing and a 5 Ω series resistor at the output, it achieves <0.1 dB gain flatness to 30 MHz and meets NTSC differential gain/phase specs when loaded with 75 Ω coaxial cable and termination.
What is the maximum capacitive load the AD8005ARZ can drive stably?
Stable operation with capacitive loads depends on closed-loop gain and series isolation. At G = +2, the AD8005ARZ drives ≥100 pF with 5 Ω series resistance and ≤30% overshoot. Without series resistance, stability degrades above ~15 pF at G = +2. For G = +10, it tolerates >200 pF due to increased phase margin-verified in Figure 31 of the AD8005 datasheet Rev. B.
Is the AD8005ARZ pin-compatible with other SOIC-8 current feedback amplifiers?
No, the AD8005ARZ has a unique pinout: Pins 1, 5, and 8 are NC; Pin 2 is −IN; Pin 3 is +IN; Pin 4 is −VS; Pin 6 is OUT; Pin 7 is +VS. This differs from industry-standard SOIC-8 op amp layouts (e.g., LMH6702, THS3201), which place power pins at corners and use all eight pins functionally. PCB redesign is required for substitution.
AD8005ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 280V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 270 MHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 5 mV
- Current - Supply:
- 400µA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8005ARZ FAQ
1.How can I place an order for AD8005ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8005ARZ 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 AD8005ARZ reliable?
The price and inventory of AD8005ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8005ARZ is usually 5 days.
3.What payment methods are accepted for AD8005ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8005ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8005ARZ?
AD8005ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8005ARZ 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 AD8005ARZ?
For technical support, including AD8005ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8005ARZ requirements.
6.How does Aetrix verify that AD8005ARZ is sourced from the original manufacturer or authorized distributors?
All AD8005ARZ 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 AD8005ARZ meets industry standards.
7.What is the process for return or replacement of AD8005ARZ?
All AD8005ARZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8005ARZ, 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 AD8005ARZ part is unused and in its original packaging.
Return procedure for AD8005ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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