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Analog Devices Inc. AD8648ARUZ-REEL
- Part No.:
- AD8648ARUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8648ARUZ-REEL.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:34,268
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Product details
Overview
AD8648ARUZ-REEL from Analog Devices is a quad, rail-to-rail input/output precision operational amplifier optimized for single-supply operation from 2.7 V to 5.5 V. It delivers 24 MHz gain bandwidth, 11 V/μs slew rate, 2.5 mV max offset voltage, and 8 nV/√Hz voltage noise density, enabling high-fidelity signal conditioning in battery-powered instrumentation and sensor front ends.
For engineers reviewing the AD8648ARUZ-REEL datasheet, AD8648ARUZ-REEL pinout, AD8648ARUZ-REEL application, or AD8648ARUZ-REEL equivalent, key selection criteria include rail-to-rail output swing at low supply voltages, ultra-low input bias current (1 pA typ), channel separation (−115 dB at 10 kHz), and automotive-grade temperature range (−40°C to +125°C).
Technical Context
The AD8648ARUZ-REEL integrates four independent amplifiers in a single 14-lead TSSOP package, each featuring unity-gain stability, no phase reversal, and full rail-to-rail input/output swing. Its 24 MHz GBP and 74° phase margin support stable closed-loop operation with gains ≥1 across wide bandwidths.
Designed for low-noise, high-impedance applications, it combines 1 pA typical input bias current with 2.5 pF differential input capacitance and 6.7–7.8 pF common-mode capacitance-critical for photodiode and high-Z sensor interfacing without signal degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 24 MHz - supports stable amplification of signals up to ~2.4 MHz at gain = 10 without excessive phase lag. |
| Slew Rate | 11 V/μs - enables clean reproduction of fast 10-Vpp signals up to ~1.75 MHz without slew-induced distortion. |
| Input Offset Voltage | 2.5 mV max - ensures ≤0.5% error in 0.5-V full-scale sensor outputs without trimming. |
| Voltage Noise Density | 8 nV/√Hz @ 1 kHz - preserves SNR in audio and precision analog front ends with source impedances <10 kΩ. |
| Supply Current per Amplifier | 2.0 mA max @ 5 V - allows four-channel operation within 8 mA total, suitable for portable devices with tight power budgets. |
| Common-Mode Rejection Ratio | 84 dB min - rejects >99.9% of 1-V common-mode interference on differential sensor inputs. |
| Operating Temperature Range | −40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
AD8648ARUZ-REEL is housed in a 14-lead TSSOP (RU-14) package, 5.0 mm × 4.4 mm × 1.2 mm, with exposed pad for thermal enhancement. Pin 1 marked by dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −INA | Inverting input of Amplifier A - accepts differential or single-ended signals with rail-to-rail common-mode range. |
| 2 | +INA | Non-inverting input of Amplifier A - high-impedance node (1 pA bias) for sensor or reference connections. |
| 3 | V+ | Positive supply rail - accepts 2.7 V to 5.5 V; decoupling capacitor required at pin for stability. |
| 4 | OUTB | Output of Amplifier B - rail-to-rail swing (0.02 V to V+ − 0.02 V @ 1 mA) drives ADC drivers or filters. |
| 5 | −INB | Inverting input of Amplifier B - electrically isolated from other channels; supports multiplexed signal routing. |
| 6 | +INB | Non-inverting input of Amplifier B - matched to +INA for dual-channel instrumentation configurations. |
| 7 | OUTA | Output of Amplifier A - capable of ±120 mA short-circuit current; drives low-Z loads like audio lines or mux buffers. |
| 8 | −IND | Inverting input of Amplifier D - identical electrical characteristics to −INA; enables quad-channel synchronous filtering. |
| 9 | +IND | Non-inverting input of Amplifier D - supports independent biasing for multi-stage active filter topologies. |
| 10 | V− | Negative supply rail - tied to ground in single-supply systems; establishes reference for rail-to-rail output stage. |
| 11 | OUTC | Output of Amplifier C - shares same drive capability and noise performance as OUTA; used in 4-channel datapath buffering. |
| 12 | −INC | Inverting input of Amplifier C - isolated from adjacent channels; critical for maintaining >115 dB channel separation at 10 kHz. |
| 13 | +INC | Non-inverting input of Amplifier C - low input capacitance (2.5 pF diff.) minimizes phase shift in high-frequency feedback networks. |
| 14 | OUTD | Output of Amplifier D - fully specified for 10 mA load at 5 V supply; maintains 0.1% settling in ≤0.5 μs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output swing | Enables full utilization of 2.7–5.5 V supply range in single-supply systems, e.g., buffering CMOS ADCs with 0–VDD input ranges. |
| Ultra-low input bias current (1 pA typ) | Prevents signal loss and offset drift when interfacing with high-impedance sources like photodiodes or piezoelectric sensors. |
| 24 MHz bandwidth with 74° phase margin | Supports stable unity-gain follower and gain-of-10 configurations without external compensation in precision filters. |
| −115 dB channel separation at 10 kHz | Minimizes crosstalk between simultaneously active amplifier channels in multi-sensor data acquisition systems. |
| Qualified for automotive applications | Meets AEC-Q100 stress testing requirements; operates reliably over −40°C to +125°C junction temperature range. |
Applications
| Barcode Scanners | Photodiode Amplifiers |
|---|---|
Use Scenario: High-speed laser diode return signal amplification in handheld and fixed-mount barcode readers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal noise and fast settling. Use Value: 8 nV/√Hz noise density and 24 MHz bandwidth preserve pulse fidelity for 100+ kbps scan rates. | Use Scenario: Low-light optical detection in medical pulse oximeters and environmental particulate sensors. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current preserving weak photocurrent integrity. Use Value: 1 pA typical input bias current prevents DC error accumulation in high-gain (>1 MΩ) TIA configurations. |
| ADC Front Ends | Battery-Powered Instruments |
Use Scenario: Driving SAR and sigma-delta ADC inputs in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Rail-to-rail output buffer ensuring full-scale ADC utilization without clipping. Use Value: Output swings to within 20 mV of rails at 1 mA load, maximizing dynamic range for 12–16-bit converters. | Use Scenario: Signal conditioning in handheld gas analyzers and portable oscilloscopes with 2.7–5.5 V battery supplies. IC Role / Device Role / Timing Role: Quad-channel analog front end handling sensor excitation, amplification, and anti-alias filtering. Use Value: 2 mA per amplifier enables four-channel operation under 8 mA total, extending battery life in AA/AAA-powered units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8648ARZ-REEL | Same die, 14-lead SOIC_N package (7.6 mm × 5.0 mm vs. TSSOP's 5.0 mm × 4.4 mm); higher θJA (120°C/W vs. 180°C/W). | Preferred where board space permits larger footprint and hand-soldering is used; less suited for dense portable PCBs. | Select AD8648ARUZ-REEL for space-constrained, reflow-only assemblies requiring thermal efficiency. |
| OP4177ARUZ | Lower bandwidth (1.3 MHz), lower noise (7.9 nV/√Hz), higher offset (60 μV typ), but superior long-term drift (0.3 μV/°C). | Better for ultra-stable DC-coupled applications (e.g., weigh scales), not for AC-coupled or wideband use. | Choose OP4177ARUZ only when sub-μV/°C drift dominates over speed and noise requirements. |
Compared with AD8648ARZ-REEL, AD8648ARUZ-REEL offers 30% smaller footprint and improved thermal resistance for high-density layouts; versus OP4177ARUZ, it trades DC precision for 18× higher bandwidth and lower input bias current-critical for photodiode and multipole filter designs.
Availability
AD8648ARUZ-REEL is available at Aetrix Electronics and suitable for battery-powered instrumentation, photodiode amplification, and ADC front-end designs requiring stable component supply across automotive, industrial, and portable electronics programs.
Supply support for AD8648ARUZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD8648 belongs to Analog Devices' precision rail-to-rail op-amp product line, engineered for low-noise, low-offset, and low-power operation in single-supply sensor signal chains and portable measurement systems.
FAQ
What is the maximum operating supply voltage for AD8648ARUZ-REEL?
The absolute maximum supply voltage for AD8648ARUZ-REEL is 6 V, but the recommended operating range is 2.7 V to 5.5 V. Operation above 5.5 V risks permanent damage, while below 2.7 V may degrade output swing and bandwidth. The AD8648ARUZ-REEL maintains full rail-to-rail functionality and 24 MHz bandwidth across this specified range.
Does AD8648ARUZ-REEL include a shutdown function?
No, AD8648ARUZ-REEL does not include a shutdown function. That feature is exclusive to the AD8647 (dual version) and is not implemented in the AD8648 quad amplifier. All four amplifiers in AD8648ARUZ-REEL remain active whenever powered; power reduction must be achieved via system-level supply control.
What is the channel separation specification for AD8648ARUZ-REEL?
AD8648ARUZ-REEL provides −115 dB channel separation at 10 kHz and −110 dB at 100 kHz, measured under standard conditions (VSY = 5 V, RL = 2 kΩ, AV = −10). This high isolation prevents crosstalk between adjacent amplifiers in multi-channel data acquisition, enabling simultaneous sampling without inter-channel interference.
Can AD8648ARUZ-REEL drive capacitive loads directly?
AD8648ARUZ-REEL is unity-gain stable and can drive moderate capacitive loads (≤100 pF) without external compensation. For loads >100 pF, a series resistor (10–50 Ω) between output and capacitance is recommended to maintain phase margin and prevent peaking or oscillation, as confirmed by transient response testing in the datasheet.
Is AD8648ARUZ-REEL qualified for automotive applications?
Yes, AD8648ARUZ-REEL is qualified for automotive applications per AEC-Q100 standards and operates across the extended temperature range of −40°C to +125°C. This qualification applies to the specific RU-14 (TSSOP) package variant and is documented in the official Analog Devices ordering guide.
AD8648ARUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11V/µs
- Gain Bandwidth Product:
- 24 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.3 pA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 1.5mA (x4 Channels)
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
AD8648ARUZ-REEL FAQ
1.How can I place an order for AD8648ARUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8648ARUZ-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 AD8648ARUZ-REEL reliable?
The price and inventory of AD8648ARUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8648ARUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8648ARUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8648ARUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8648ARUZ-REEL?
AD8648ARUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8648ARUZ-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 AD8648ARUZ-REEL?
For technical support, including AD8648ARUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8648ARUZ-REEL requirements.
6.How does Aetrix verify that AD8648ARUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8648ARUZ-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 AD8648ARUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8648ARUZ-REEL?
All AD8648ARUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8648ARUZ-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 AD8648ARUZ-REEL part is unused and in its original packaging.
Return procedure for AD8648ARUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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