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Analog Devices Inc. AD8008ARZ-REEL7
- Part No.:
- AD8008ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8008ARZ-REEL7.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,923
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Product details
Overview
AD8008ARZ-REEL7 from Analog Devices is a dual-channel, current-feedback operational amplifier optimized for ultralow distortion and high-speed signal conditioning in precision analog front-ends. It delivers 650 MHz −3 dB bandwidth (G = +1), 1000 V/μs slew rate, −77 dBc second harmonic distortion at 20 MHz, 2.7 nV/√Hz input voltage noise, and operates from ±5 V or single 5 V supply. It serves as an A/D driver and IF amplifier in communications infrastructure equipment.
For engineers reviewing the AD8008ARZ-REEL7 datasheet, AD8008ARZ-REEL7 pinout, AD8008ARZ-REEL7 application, or AD8008ARZ-REEL7 equivalent, this page provides verified specifications, package mapping to SOIC-8 (R), validated pin functions, real-world application contexts, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The AD8008ARZ-REEL7 implements a modified current-feedback architecture with low-distortion signal mirrors and active imbalance compensation circuitry at both input and output stages to suppress even-order harmonics. Its symmetrical layout minimizes second-harmonic generation, and its eXtra-Fast Complementary Bipolar (XFCB) process enables high bandwidth with only 9 mA per amplifier quiescent current.
It supports stable operation with capacitive loads up to 8 pF, features rail-to-rail output swing capability under 150 Ω load, and maintains 0.1 dB gain flatness up to 90 MHz (G = +2). Input common-mode range extends to ±3.9 V on ±5 V supplies, enabling direct interfacing with ADC reference voltages and baseband I/Q signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 650 MHz at G = +1, RL = 1 kΩ - enables wideband IF sampling and broadband signal chain design |
| Slew Rate | 1000 V/μs - supports fast transient fidelity for high-resolution, high-speed data converters |
| Second Harmonic Distortion | −77 dBc @ 20 MHz, VO = 2 V p-p - meets stringent SFDR requirements in LTE/WiMAX receiver chains |
| Input Voltage Noise | 2.7 nV/√Hz - preserves SNR in low-level signal amplification before ADCs |
| Quiescent Current | 9 mA per amplifier - allows dual-channel high-speed performance within tight power budgets |
| Supply Range | ±5 V to ±6 V or single 5 V - supports legacy bipolar and modern single-supply system architectures |
| Crosstalk | −68 dB @ 5 MHz - ensures channel isolation in dual-path I/Q processing without intermodulation |
Pinout & Package
AD8008ARZ-REEL7 is packaged in an 8-lead SOIC (R) with exposed pad, rated for −40°C to +85°C industrial operation. Pin numbering follows standard SOIC top-view convention (pin 1 at notch end, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT1 | Amplifier 1 output - drives ADC input or filter stage with low impedance and high slew |
| 2 | –IN1 | Inverting input of Amp 1 - connects to feedback network; high-impedance node for current-feedback topology |
| 3 | +IN1 | Noninverting input of Amp 1 - accepts differential or single-ended signal; 1 pF input capacitance requires careful layout |
| 4 | –VS | Negative supply rail - must be decoupled locally with 0.1 µF ceramic capacitor to ground plane |
| 5 | +VS | Positive supply rail - shared supply for both amplifiers; decoupling must use single-point grounding per layout guidelines |
| 6 | VOUT2 | Amplifier 2 output - independent channel for I/Q or dual-signal paths; crosstalk < −68 dB at 5 MHz |
| 7 | –IN2 | Inverting input of Amp 2 - electrically isolated from Amp 1 inputs; same feedback resistor constraints apply |
| 8 | +IN2 | Noninverting input of Amp 2 - matched to +IN1 for balanced performance across channels |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow distortion architecture | Active input/output imbalance compensation reduces second-harmonic generation by >10 dB vs. classic CFB op amps |
| High-speed current feedback | Bandwidth remains stable across gains - 230 MHz at G = +2 enables fixed-gain IF amplification without bandwidth trade-off |
| Low-noise, low-power design | 2.7 nV/√Hz noise at 9 mA supply current achieves 0.3 nV/√Hz/mA efficiency - critical for thermally constrained RF modules |
| Robust capacitive load drive | Stable with up to 8 pF load - eliminates need for external isolation resistors when driving ADC input capacitance |
| Industrial temperature rating | Specified over −40°C to +85°C - qualified for outdoor base station, test equipment, and industrial imaging applications |
Applications
| Instrumentation Signal Conditioning | IF Amplifier in Wireless Receivers |
|---|---|
Use Scenario: High-precision oscilloscope front-end amplifying mV-level sensor outputs before digitization. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage driving 14-bit, 125 MSPS ADC with minimal added noise or distortion. Use Value: 650 MHz bandwidth and −77 dBc HD2 at 20 MHz preserve waveform fidelity for sub-ns timing resolution and accurate FFT-based spectral analysis. | Use Scenario: Intermediate-frequency amplification in LTE femtocell receivers operating at 190–210 MHz. IC Role / Device Role / Timing Role: Dual-path I/Q channel amplifier after quadrature downconversion, prior to programmable gain and ADC. Use Value: −68 dB crosstalk and matched channel performance ensure <0.01° phase error in I/Q demodulation, maintaining EVM compliance. |
| DAC Output Buffering | Active Filter Stage in Medical Imaging |
Use Scenario: Driving high-impedance switched-capacitor anti-aliasing filters following 16-bit DACs in ultrasound beamforming systems. IC Role / Device Role / Timing Role: Low-output-impedance, high-slew buffer isolating DAC from filter loading while preserving settling time. Use Value: 1000 V/μs slew rate and 18 ns 0.1% settling enable full-scale transitions within 20 ns - meeting 50 MSPS update rate requirements. | Use Scenario: Second-order active low-pass filtering in portable MRI gradient control subsystems. IC Role / Device Role / Timing Role: Dual-channel transimpedance and gain stage shaping analog feedback signals from gradient coil sensors. Use Value: 2.7 nV/√Hz input noise and 0.015% differential gain error maintain <0.5% image intensity linearity across 10 kHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-distortion amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8009ARZ | Single-channel, 1 GHz bandwidth, −83 dBc HD2 @ 20 MHz, 12.5 mA IQ - higher speed but no dual-channel integration | Requires two devices for dual-path designs; increases board area and matching complexity | Select when >650 MHz bandwidth is mandatory and dual-channel integration is not required |
| LMH6629MA/NOPB | Dual-channel, 720 MHz bandwidth, −72 dBc HD2 @ 20 MHz, 11.5 mA IQ - slightly higher distortion and current than AD8008ARZ-REEL7 | Lower CMRR (52 dB) and wider input offset drift (5 μV/°C) limit precision DC-coupled use | Select when cost sensitivity outweighs 5 dB HD2 advantage and thermal drift tolerance is relaxed |
Compared with AD8009ARZ and LMH6629MA/NOPB, AD8008ARZ-REEL7 uniquely balances dual-channel integration, −77 dBc distortion at 20 MHz, and 9 mA power consumption - making it optimal for space-constrained, high-SFDR IF and instrumentation signal chains where channel matching and thermal stability are critical.
Availability
AD8008ARZ-REEL7 is available at Aetrix Electronics and suitable for instrumentation front-ends, wireless IF signal chains, and medical imaging subsystems requiring stable component supply, guaranteed traceability, and long-term industrial temperature support.
Supply support for AD8008ARZ-REEL7 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 AD8007/AD8008 product line was engineered specifically for ultralow-distortion, high-speed signal conditioning in communications, instrumentation, and imaging systems - leveraging XFCB process technology to deliver bandwidth, noise, and power efficiency simultaneously.
FAQ
What is the maximum capacitive load the AD8008ARZ-REEL7 can drive stably?
The AD8008ARZ-REEL7 is characterized for stable operation with up to 8 pF capacitive load at 30% overshoot, as specified in the Absolute Maximum Ratings and Typical Performance Characteristics sections. This enables direct connection to typical ADC input capacitances (e.g., 5–7 pF) without series isolation resistors. Layout best practices - including short traces, local 0.1 µF decoupling, and ground-plane integrity - remain essential to maintain stability at full bandwidth.
Does the AD8008ARZ-REEL7 support single-supply operation?
Yes, the AD8008ARZ-REEL7 supports single-supply operation from 5 V. The input common-mode voltage range is specified as 1.1 V to 3.9 V under 5 V supply, and output swing reaches within 1.15 V of each rail into 1 kΩ. For rail-to-rail input/output performance, external level-shifting or biasing may be required depending on signal amplitude and AC-coupling configuration.
What is the crosstalk specification between channels in the AD8008ARZ-REEL7?
The AD8008ARZ-REEL7 specifies −68 dB crosstalk between output channels at 5 MHz with G = +2, measured under standard test conditions (RL = 150 Ω, VS = ±5 V). This value reflects isolation between the two independent amplifiers on-die and is critical for I/Q signal path integrity in communication receivers and phased-array systems.
How does the AD8008ARZ-REEL7 differ from the AD8007 in terms of performance and pin compatibility?
The AD8008ARZ-REEL7 is the dual-channel variant of the AD8007 single-channel amplifier. Both share identical per-amplifier specifications - including 650 MHz bandwidth, −77 dBc HD2 (AD8008) / −83 dBc HD2 (AD8007) at 20 MHz, and 2.7 nV/√Hz noise. They are not pin-compatible: AD8007 uses 5-lead SC70 or 8-lead SOIC with different pinout, while AD8008ARZ-REEL7 uses dedicated 8-lead SOIC with dual-output, dual-input layout as shown in Figure 3.
What PCB layout recommendations are critical for achieving specified distortion performance with the AD8008ARZ-REEL7?
To achieve −77 dBc second-harmonic distortion, Analog Devices mandates single-point grounding of high-frequency supply decoupling capacitors (0.1 µF) - connecting both +VS and −VS caps to a common node before returning to ground. Split-ground returns degrade even-order harmonic performance. Additionally, input traces must be symmetric and short (<5 mm), input capacitance limited to ≤1 pF, and power planes uninterrupted beneath the device to minimize parasitic coupling and ground bounce.
AD8008ARZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 1000V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 500 MHz
- Current - Input Bias:
- 4 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 9mA (x2 Channels)
- Current - Output / Channel:
- 130 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8008ARZ-REEL7 FAQ
1.How can I place an order for AD8008ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8008ARZ-REEL7 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 AD8008ARZ-REEL7 reliable?
The price and inventory of AD8008ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8008ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8008ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8008ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8008ARZ-REEL7?
AD8008ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8008ARZ-REEL7 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 AD8008ARZ-REEL7?
For technical support, including AD8008ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8008ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8008ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8008ARZ-REEL7 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 AD8008ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8008ARZ-REEL7?
All AD8008ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8008ARZ-REEL7, 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 AD8008ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8008ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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