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Analog Devices Inc. AD8057ARZ
- Part No.:
- AD8057ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8057ARZ.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:898
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Product details
Overview
AD8057ARZ from Analog Devices is a single, voltage-feedback operational amplifier optimized for high-speed, low-noise signal conditioning in video and data acquisition systems. It delivers 325 MHz −3 dB bandwidth (G = +1), 1000 V/μs slew rate, 7 nV/√Hz input voltage noise, 5.4 mA quiescent current at 5 V, and operates from ±1.5 V to ±6 V or 3 V to 10 V supplies. It is widely used as an analog-to-digital driver in high-resolution imaging and professional camera signal chains.
For engineers reviewing the AD8057ARZ datasheet, AD8057ARZ pinout, AD8057ARZ application, or AD8057ARZ equivalent, key selection criteria include its 325 MHz small-signal bandwidth, 0.1 dB flatness to 28 MHz, differential gain/phase error under 0.02% / 0.01° (NTSC, RL = 1 kΩ), and SOIC-8 package compatibility with industrial temperature range (−40°C to +85°C).
Technical Context
The AD8057ARZ employs a voltage-feedback architecture delivering current-feedback-class speed without sacrificing dc precision. Its design balances wide bandwidth, low distortion (−85 dBc at 5 MHz), and rail-to-rail output swing capability into 150 Ω loads (±3.9 V), enabling direct interface with 12-/14-bit ADCs such as AD9225 requiring midsupply common-mode bias.
It features low input capacitance (2 pF on +IN), high input resistance (10 MΩ), and stable operation driving up to 30 pF capacitive loads without external compensation-critical for filter and cable-driver applications where phase linearity and settling time (30 ns to 0.1%) are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 325 MHz at G = +1, enabling full HD video signal amplification without attenuation |
| Slew Rate | 1000 V/μs, supporting fast transient response for pulse and step signals in ADC front-ends |
| Input Voltage Noise | 7 nV/√Hz at 100 kHz, preserving SNR in photodiode preamp and low-level analog sensing |
| Total Harmonic Distortion | −85 dBc at 5 MHz, RL = 1 kΩ, meeting broadcast-grade video fidelity requirements |
| Supply Range | 3 V to 10 V single or ±1.5 V to ±6 V dual, allowing flexible integration in 3.3 V, 5 V, and ±5 V systems |
| Quiescent Current | 5.4 mA typical at 5 V, enabling power-sensitive portable and multi-channel designs |
| Differential Phase Error | 0.01° at NTSC, RL = 1 kΩ, ensuring minimal color timing skew in composite video processing |
Pinout & Package
AD8057ARZ 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 exposed pad not present. Thermal resistance θJA = 160°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −IN | Inverting input; high-impedance node requiring minimal parasitic capacitance for stability |
| 2 | +IN | Noninverting input; 2 pF input capacitance, 10 MΩ input resistance, supports dc-coupled biasing |
| 3 | −VS | Negative supply rail; must be bypassed with 0.1 µF ceramic + 10 µF tantalum near pin |
| 4 | NC | No connect; electrically isolated, no internal connection or function |
| 5 | NC | No connect; electrically isolated, no internal connection or function |
| 6 | VOUT | Amplifier output; capable of ±3.9 V swing into 150 Ω, drives ADC inputs directly |
| 7 | +VS | Positive supply rail; decoupling critical to suppress PSRR degradation above 100 kHz |
| 8 | NC | No connect; electrically isolated, no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Low-cost high-speed op amp | Single-channel voltage-feedback amplifier priced for volume imaging and instrumentation use |
| 325 MHz bandwidth at G = +1 | Supports >100 MSPS sampling in ADC driver stages without gain-dependent bandwidth loss |
| 7 nV/√Hz input voltage noise | Enables sub-12-bit ENOB preservation in photodiode and sensor preamplifier topologies |
| 30 ns 0.1% settling time | Meets timing budget for 25 MSPS ADCs like AD9225 with minimal acquisition window overhead |
| Stable with 30 pF capacitive load | Eliminates need for series output resistor in video filter and coaxial cable drive applications |
Applications
| Imaging Signal Chain | Analog-to-Digital Converter Driver |
|---|---|
Use Scenario: Amplifying low-amplitude, wideband signals from CMOS/CCD image sensors before digitization. IC Role / Device Role / Timing Role: High-fidelity voltage buffer and gain stage providing dc-coupled signal conditioning with minimal group delay variation. Use Value: 0.1 dB flatness to 28 MHz ensures uniform frequency response across visible spectrum; −85 dBc THD preserves dynamic range for 12-bit+ imaging. | Use Scenario: Driving differential inputs of 12-/14-bit ADCs (e.g., AD9225) operating at 25 MSPS on 5 V supply. IC Role / Device Role / Timing Role: Single-ended-to-differential converter with matched noise gain (+2) and <30 ns settling to meet ADC aperture uncertainty limits. Use Value: Output swing of ±3.9 V into 150 Ω enables full-scale ADC utilization; low 0.01° differential phase minimizes color artifacts. |
| Professional Video Filter | Photodiode Preamp |
Use Scenario: Implementing Sallen-Key low-pass filters in broadcast cameras to suppress 27 MHz clock feedthrough while passing 0–5.7 MHz video band. IC Role / Device Role / Timing Role: Active filter section with high open-loop gain (>50 dB) and wide bandwidth ensuring accurate pole placement and phase linearity. Use Value: 42 dB rejection at 27 MHz meets SMPTE standards; 0.02% differential gain error prevents hue shifts in NTSC/PAL signals. | Use Scenario: Amplifying nanoamp-level photocurrents from precision optical sensors in medical or analytical instruments. IC Role / Device Role / Timing Role: Transimpedance amplifier front-end with low input bias current (0.5–2.5 µA) and ultra-low voltage noise. Use Value: 7 nV/√Hz noise floor dominates over Johnson noise in typical 10–100 kΩ feedback networks, maximizing SNR at low light levels. |
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 |
|---|---|---|---|
| AD8057ARTZ | Same die, 5-lead SOT-23-5 package (RJ-5); higher θJA = 240°C/W; lower max power dissipation (0.5 W) | Space-constrained PCBs where SOIC-8 footprint is prohibitive; unsuitable for >100 mW continuous dissipation | Select AD8057ARTZ only when board area is critical and thermal management allows SOT-23 derating. |
| ADA4817-1ARMZ | Faster 1 GHz bandwidth, lower 4.3 nV/√Hz noise, but higher 14.5 mA supply current and narrower 3 V to 10 V supply range | Ultra-high-resolution digitization (>14-bit) or RF IF amplification where bandwidth exceeds 325 MHz | Choose ADA4817-1ARMZ when bandwidth >500 MHz is required and power budget permits 2.7× higher IQ. |
Compared with AD8057ARTZ, AD8057ARZ offers superior thermal performance and higher power handling in SOIC-8; compared with ADA4817-1ARMZ, it provides better power efficiency and broader supply flexibility at the cost of bandwidth and noise floor.
Availability
AD8057ARZ is available at Aetrix Electronics and suitable for imaging signal chains, analog-to-digital converter drivers, professional video filtering, and photodiode preamplification requiring stable component supply across industrial temperature ranges.
Supply support for AD8057ARZ 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 AD8057 belongs to Analog Devices' high-speed voltage-feedback op amp product line, engineered for cost-sensitive, bandwidth-critical applications including video, test equipment, and data acquisition where speed, noise, and distortion must coexist within tight power budgets.
FAQ
What is the maximum capacitive load the AD8057ARZ can drive without external compensation?
The AD8057ARZ is specified to remain stable with up to 30 pF of capacitive load at unity gain, producing ≤30% overshoot in step response. This capability eliminates the need for series output resistors in many video filter and coaxial cable driver configurations, simplifying layout and preserving bandwidth. For larger loads or higher gains, external isolation resistors (e.g., 2.4 Ω) may be required per Figure 43 in the AD8057/AD8058 datasheet. The AD8057ARZ maintains this rating across its full industrial temperature range.
Does the AD8057ARZ support single-supply operation, and what is its input common-mode voltage range at 5 V supply?
Yes, the AD8057ARZ supports true single-supply operation from 3 V to 10 V. At VS = 5 V, its input common-mode voltage range is specified as 0.9 V to 3.4 V relative to ground-enabling direct interface with 2.5 V reference-biased circuits such as ADC drivers. This range ensures reliable operation when the noninverting input is biased at midsupply (2.5 V), a requirement for driving differential-input ADCs like the AD9225. The AD8057ARZ achieves this without rail-to-rail input stage limitations seen in older architectures.
What is the differential phase error of the AD8057ARZ in NTSC video applications, and under what conditions is it measured?
The AD8057ARZ exhibits 0.01° differential phase error in NTSC video applications when configured with G = +2 and loaded with RL = 1 kΩ, as verified in Figure 37 of the Rev. E datasheet. This ultra-low phase error ensures minimal hue distortion across the video bandwidth, making it suitable for professional broadcast and medical imaging equipment where color fidelity is critical. The measurement uses standard NTSC composite signal conditions and confirms the device's suitability for high-end video op amp roles beyond generic amplification.
How does the AD8057ARZ compare to the dual-channel AD8058ARZ in terms of quiescent current and thermal performance?
The AD8057ARZ draws 5.4 mA typical quiescent current at 5 V, while the dual-channel AD8058ARZ draws 13.5–14 mA under identical conditions-approximately 2.5× higher due to two independent amplifier cores. Both share the same SOIC-8 package (R-8) with θJA = 160°C/W, but the AD8058ARZ's higher power dissipation (14 mA × 5 V ≈ 70 mW vs. AD8057ARZ's 27 mW) results in greater junction temperature rise. Thus, the AD8057ARZ is preferred for single-channel, thermally constrained designs, whereas AD8058ARZ suits space-limited dual-signal paths where shared thermal mass is acceptable.
Is the AD8057ARZ RoHS compliant, and what does the 'Z' suffix indicate in its ordering code?
Yes, the AD8057ARZ is RoHS compliant-the 'Z' suffix explicitly denotes compliance with EU Directive 2011/65/EU (RoHS 2), including restriction of lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. This applies to both the AD8057ARZ (SOIC-8) and AD8057ARTZ (SOT-23-5) variants. The 'Z' does not affect electrical specifications or package dimensions; it solely identifies environmentally compliant manufacturing and marking. All AD8057ARZ units shipped by Aetrix Electronics carry full RoHS documentation and material declarations.
AD8057ARZ 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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1150V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 325 MHz
- Current - Input Bias:
- 500 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 6mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8057ARZ FAQ
1.How can I place an order for AD8057ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8057ARZ 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 AD8057ARZ reliable?
The price and inventory of AD8057ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8057ARZ is usually 5 days.
3.What payment methods are accepted for AD8057ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8057ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8057ARZ?
AD8057ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8057ARZ 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 AD8057ARZ?
For technical support, including AD8057ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8057ARZ requirements.
6.How does Aetrix verify that AD8057ARZ is sourced from the original manufacturer or authorized distributors?
All AD8057ARZ 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 AD8057ARZ meets industry standards.
7.What is the process for return or replacement of AD8057ARZ?
All AD8057ARZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8057ARZ, 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 AD8057ARZ part is unused and in its original packaging.
Return procedure for AD8057ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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