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Analog Devices Inc. AD8047ARZ-REEL7
- Part No.:
- AD8047ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8047ARZ-REEL7.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:573
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Product details
Overview
AD8047ARZ-REEL7 from Analog Devices is a unity-gain-stable, voltage-feedback operational amplifier optimized for high-speed signal conditioning in precision analog front-ends. It delivers 250 MHz small-signal bandwidth, 130 MHz large-signal (2 Vp-p) bandwidth, and 750 V/µs slew rate at ±5 V supply, enabling accurate buffering of 12-bit/10 MSPS ADCs and video line drivers.
For engineers reviewing the AD8047ARZ-REEL7 datasheet, AD8047ARZ-REEL7 pinout, AD8047ARZ-REEL7 application, or AD8047ARZ-REEL7 equivalent, key selection criteria include its unity-gain stability, 5.2 nV/√Hz input voltage noise, –54 dBc second-harmonic distortion at 20 MHz, and SOIC-8 package compatibility with high-density PCB layouts.
Technical Context
The AD8047ARZ-REEL7 employs a proprietary voltage-feedback architecture that achieves current-feedback–class slew performance (750 V/µs) while retaining balanced high-impedance inputs for flexible active filter design. Its open-loop gain rolls off at ~6 dB/octave, yielding a constant gain-bandwidth product of ~180 V·MHz under large-signal conditions.
It is explicitly specified for G = +1 operation only, with internal compensation ensuring unity-gain stability. The device drives ≥50 pF capacitive loads directly and maintains 0.01% settling in 30 ns for 2 V steps-critical for fast DAC I/V conversion and IF/RF signal chain stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 250 MHz @ G = +1, VOUT ≤ 0.4 Vp-p: enables baseband-to-IF amplification up to UHF without gain peaking. |
| Large-Signal Bandwidth | 130 MHz @ 2 Vp-p, G = +1: supports full-scale video and pulse amplification with minimal amplitude droop. |
| Slew Rate | 750 V/µs: ensures faithful reproduction of fast transient edges in ADC driver and pulse amplifier applications. |
| Input Voltage Noise | 5.2 nV/√Hz @ 100 kHz: preserves SNR in low-level signal conditioning before high-resolution ADCs. |
| Harmonic Distortion | –54 dBc @ 20 MHz, 2 Vp-p: meets linearity requirements for 12-bit data acquisition systems. |
| Supply Current | 5.8 mA typical @ ±5 V: balances speed and power efficiency in portable or thermally constrained designs. |
| Operating Temperature | –40°C to +85°C industrial grade: validated for embedded instrumentation and industrial video equipment. |
Pinout & Package
AD8047ARZ-REEL7 is housed in an 8-lead SOIC (R-8) package with standard 1.27 mm pitch, compatible with automated SMT assembly and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection; must be left floating or grounded per layout best practices. |
| 2 | −INPUT | Inverting input node; requires low-stray-capacitance routing to preserve high-frequency CMRR and phase margin. |
| 3 | +INPUT | Non-inverting input node; high-impedance path critical for active filter and differential amplifier configurations. |
| 4 | −VS | Negative supply rail; must be bypassed with 0.1 µF ceramic + 4.7 µF tantalum near the pin. |
| 5 | NC | No internal connection; electrically isolated from die; may be used as thermal pad anchor if needed. |
| 6 | OUTPUT | Low-output-impedance (0.2 Ω) drive capable of sourcing/sinking 50 mA into 150 Ω loads. |
| 7 | +VS | Positive supply rail; identical bypassing requirement as −VS to suppress PSRR-induced distortion. |
| 8 | NC | No internal connection; no electrical function; avoid routing signals adjacent to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | Eliminates external compensation components in follower and gain-of-one configurations, reducing BOM count and board area. |
| 750 V/µs slew rate with 250 MHz bandwidth | Enables simultaneous high-fidelity amplitude and timing response in pulse and video applications without trade-off. |
| 5.2 nV/√Hz input voltage noise | Minimizes added noise floor when driving 12-bit ADCs, preserving effective resolution in sensor interface circuits. |
| Drives ≥50 pF capacitive load | Supports direct connection to long traces, ADC input capacitance, or coaxial cables without external isolation resistors. |
| 30 ns to 0.01% settling time | Meets timing budget for 10 MSPS sampling systems where aperture uncertainty must remain < 0.1% of period. |
Applications
| ADC Input Driver | Video Line Driver |
|---|---|
Use Scenario: Driving the analog input of a 12-bit, 10 MSPS ADC (e.g., AD872A) in a data acquisition system. IC Role / Device Role / Timing Role: High-speed buffer isolating source impedance from ADC sampling capacitor; provides fast settling and low distortion. Use Value: Enables full 12-bit ENOB by limiting harmonic distortion to –54 dBc at 20 MHz and achieving 30 ns 0.01% settling on 2 V steps. |
Use Scenario: Driving 75 Ω coaxial video lines in professional broadcast or medical imaging equipment. IC Role / Device Role / Timing Role: Unity-gain video amplifier maintaining signal integrity across DC–100 MHz bandwidth. Use Value: Delivers 0.02% differential gain error and 0.03° differential phase error at 3.58 MHz, meeting SMPTE/ITU-R BT.601 compliance. |
| DAC Current-to-Voltage Converter | IF Amplifier |
Use Scenario: Converting current output from a high-speed DAC (e.g., AD9762) into single-ended voltage for downstream filtering. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current (1 µA max) and wide bandwidth. Use Value: Achieves 13 ns 0.1% settling and 30 ns 0.01% settling on 2 V steps, supporting >60 MSPS DAC update rates. |
Use Scenario: Amplifying intermediate frequency signals (e.g., 45–70 MHz) in software-defined radio receivers. IC Role / Device Role / Timing Role: Fixed-gain, low-noise IF amplifier operating in G = +1 configuration with minimal group delay variation. Use Value: Provides 250 MHz small-signal bandwidth and –66 dBc SFDR at 5 MHz, preserving modulation fidelity in QAM/QPSK demodulation paths. |
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 |
|---|---|---|---|
| AD8048ARZ-REEL7 | G = +2 minimum stable gain; 260 MHz small-signal bandwidth; 1000 V/µs slew rate; 3.8 nV/√Hz noise. | Requires minimum gain of two; unsuitable for unity-gain follower or photodiode transimpedance use. | Select AD8048ARZ-REEL7 only when closed-loop gain ≥2 is required and higher slew rate justifies increased noise. |
| LMH6629MA/NOPB | Unity-gain stable; 1.5 GHz GBW; 950 V/µs slew; 1.9 nV/√Hz noise; higher quiescent current (12.5 mA). | Higher power consumption and cost; superior noise performance but overqualified for ≤250 MHz applications. | Choose LMH6629MA/NOPB only when sub-2 nV/√Hz noise and >1 GHz bandwidth are mandatory and thermal/power budgets allow. |
Compared with AD8047ARZ-REEL7, AD8048ARZ-REEL7 offers higher speed at the cost of reduced gain flexibility, while LMH6629MA/NOPB delivers lower noise and wider bandwidth at significantly higher supply current-making AD8047ARZ-REEL7 the optimal balance of speed, noise, power, and unity-gain usability for 10–100 MHz signal chains.
Availability
AD8047ARZ-REEL7 is available at Aetrix Electronics and suitable for high-speed data acquisition, professional video infrastructure, and IF/RF signal conditioning requiring stable component supply, RoHS-compliant packaging, and reel-based SMT production support.
Supply support for AD8047ARZ-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 Wilmington, MA.
The AD8047 belongs to Analog Devices' high-speed voltage-feedback op amp product line, engineered specifically for unity-gain-stable, low-distortion, wide-bandwidth signal conditioning in precision data converters and video systems.
FAQ
What is the maximum capacitive load the AD8047ARZ-REEL7 can drive without external series resistance?
The AD8047ARZ-REEL7 is characterized to drive ≥50 pF capacitive loads directly while maintaining stability and specified transient response. Data Sheet Figure 59 shows clean large-signal transient response with 27 pF load and zero series resistance. For loads >25 pF, performance remains robust, but layout parasitics must be minimized-especially at the inverting input-to avoid peaking or ringing.
Is the AD8047ARZ-REEL7 unity-gain stable, and what happens if used at G = –1?
Yes, the AD8047ARZ-REEL7 is explicitly unity-gain stable per its General Description and Electrical Characteristics table. When configured in inverting mode (G = –1), it remains stable and delivers 250 MHz bandwidth and 30 ns 0.01% settling, as verified in Figure 10 and Figure 11 of the datasheet. No external compensation is required in either configuration.
What supply voltage range is supported by the AD8047ARZ-REEL7, and what is its quiescent current at ±5 V?
The AD8047ARZ-REEL7 operates from ±3 V to ±6 V supplies, with typical quiescent current of 5.8 mA at ±5 V. This value increases to 6.6 mA maximum across temperature and process variation, and remains stable over the full –40°C to +85°C industrial range per Table 1 and Figure 53.
Does the AD8047ARZ-REEL7 have internal ESD protection, and what precautions are recommended?
Yes, the AD8047ARZ-REEL7 features patented internal ESD protection circuitry, but it remains an ESD-sensitive device (Class 1C per JEDEC JS-001). Handling requires grounded wrist straps, conductive foam storage, and ionized air workstations. Board-level protection (e.g., TVS diodes) is advised for input pins in systems exposed to user-accessible connectors.
Can the AD8047ARZ-REEL7 be used in active filter designs, and what topology is recommended?
Yes-the AD8047ARZ-REEL7's balanced high-impedance inputs and voltage-feedback architecture make it ideal for multiple-feedback (MFB) and state-variable active filters. The datasheet recommends using it in MFB topologies where phase margin and input impedance matching are critical, and confirms stable operation up to 20 MHz filter cutoffs (Figure 63).
AD8047ARZ-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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 750V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 250 MHz
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 5.8mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8047ARZ-REEL7 FAQ
1.How can I place an order for AD8047ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8047ARZ-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 AD8047ARZ-REEL7 reliable?
The price and inventory of AD8047ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8047ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8047ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8047ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8047ARZ-REEL7?
AD8047ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8047ARZ-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 AD8047ARZ-REEL7?
For technical support, including AD8047ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8047ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8047ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8047ARZ-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 AD8047ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8047ARZ-REEL7?
All AD8047ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8047ARZ-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 AD8047ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8047ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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