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Analog Devices Inc. AD8648ARZ
- Part No.:
- AD8648ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8648ARZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:28,412
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Product details
Overview
AD8648ARZ from Analog Devices is a quad, rail-to-rail input/output operational amplifier optimized for precision, low-noise, single-supply operation across 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 photodiode amplifiers.
For engineers reviewing the AD8648ARZ datasheet, AD8648ARZ pinout, AD8648ARZ application, or AD8648ARZ equivalent, this page provides verified specifications, SOIC-14 package details, automotive-grade temperature range (−40°C to +125°C), and validated alternative op-amps for multipole filters, ADC front ends, and sensor interfaces.
Technical Context
The AD8648ARZ integrates four independent unity-gain-stable amplifiers with rail-to-rail input common-mode range (0 V to VSY) and output swing within 20 mV of rails at 1 mA load. Its 1 pA typical input bias current and 7.5 μV/°C max offset drift support high-impedance sensor interfacing across industrial and automotive operating temperatures.
Each amplifier features no phase reversal, 116 dB large-signal voltage gain, and −115 dB channel separation at 10 kHz-ensuring minimal crosstalk in multi-channel data acquisition systems. The device lacks shutdown functionality (unlike AD8647), confirming its role as a continuous-operation precision quad op-amp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 24 MHz - supports stable closed-loop operation up to 100 kHz with AV = 100, suitable for anti-aliasing and reconstruction filters. |
| Slew Rate | 11 V/μs - enables accurate reproduction of fast transient signals (e.g., barcode scanner pulses) without distortion. |
| Input Offset Voltage | 2.5 mV maximum - ensures ≤0.5% error in 5 V full-scale sensor outputs without trimming. |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz - critical for low-level photodiode or thermopile signal amplification with minimal added noise. |
| Supply Current per Amplifier | 2.0 mA maximum at +25°C - allows four channels to operate under 8.5 mA total at 5 V, ideal for portable devices. |
| Common-Mode Rejection Ratio | 84 dB - rejects power supply ripple and shared-noise coupling in single-supply mixed-signal systems. |
| Operating Temperature Range | −40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
Pinout & Package
AD8648ARZ is housed in a 14-lead SOIC_N (R-14) package, 8.75 mm × 4.00 mm footprint, with standard JEDEC MS-012-AB compliance and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −INA | Inverting input of Amplifier A - high-impedance node (1 pA bias current) for differential sensing configurations. |
| 2 | +INA | Non-inverting input of Amplifier A - accepts rail-to-rail common-mode voltages (0 V to VSY). |
| 3 | V+ | Positive supply pin - connects to single supply (2.7 V–5.5 V); decoupling capacitor required near pin. |
| 4 | OUTB | Output of Amplifier B - drives loads down to 600 Ω with ±120 mA short-circuit current capability. |
| 5 | −INB | Inverting input of Amplifier B - electrically isolated from other inputs; supports independent feedback networks. |
| 6 | +INB | Non-inverting input of Amplifier B - identical CMVR and bias specs as Pin 2. |
| 7 | OUTA | Output of Amplifier A - rail-to-rail swing (20 mV from rails at 1 mA) enables direct interface to 5 V ADCs. |
| 8 | −IND | Inverting input of Amplifier D - fourth independent channel; shares same electrical characteristics as Pins 1 and 5. |
| 9 | +IND | Non-inverting input of Amplifier D - supports simultaneous multi-sensor buffering without cross-talk. |
| 10 | V− | Negative supply pin - tied to ground in single-supply operation; establishes reference for all amplifiers. |
| 11 | OUTC | Output of Amplifier C - complements OUTA/OUTB/OUTD for 4-channel signal paths (e.g., quad filter stages). |
| 12 | −INC | Inverting input of Amplifier C - fully isolated; allows individual gain configuration per channel. |
| 13 | +INC | Non-inverting input of Amplifier C - matches input specs of other non-inverting pins (Pins 2, 6, 9). |
| 14 | OUTD | Output of Amplifier D - completes quad output set; supports parallel drive or independent signal chains. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3.3 V or 5 V microcontroller-based systems without level-shifting. |
| Low input bias current (1 pA typ) | Preserves signal integrity when amplifying high-impedance sources like pH electrodes or piezoelectric sensors. |
| 24 MHz bandwidth with unity-gain stability | Supports wideband active filtering (e.g., 4-pole Butterworth) without external compensation components. |
| 8 nV/√Hz voltage noise density | Minimizes degradation of SNR in precision analog front ends for 16-bit+ ADCs. |
| Automotive qualification (−40°C to +125°C) | Validated for engine control units, battery management, and ADAS sensor signal conditioning. |
Applications
| Photodiode Amplification | ADC Front End Buffering |
|---|---|
Use Scenario: Converting weak current from silicon photodiodes into stable voltage for optical encoders or spectrophotometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 pA input bias and 8 nV/√Hz noise to maximize signal-to-noise ratio. Use Value: Enables detection of sub-nA photocurrents while maintaining >70 dB dynamic range at 1 kHz. |
Use Scenario: Driving SAR or sigma-delta ADC inputs in portable data loggers with 5 V single supply. IC Role / Device Role / Timing Role: Rail-to-rail output buffer isolating ADC from source impedance variations and settling within 0.5 μs. Use Value: Eliminates acquisition errors from source loading and guarantees 16-bit linearity over temperature. |
| Multipole Active Filters | Battery-Powered Instrumentation |
Use Scenario: Implementing 4th-order low-pass filters for ECG or vibration monitoring with minimal component count. IC Role / Device Role / Timing Role: Quad op-amp providing four gain stages in one SOIC-14 package, each configured as Sallen-Key section. Use Value: Reduces PCB area by 60% vs. discrete dual-op-amp solutions while maintaining 24 MHz loop stability. |
Use Scenario: Signal conditioning in handheld multimeters or environmental sensors powered by two AA cells (3 V). IC Role / Device Role / Timing Role: Precision quad amplifier operating down to 2.7 V supply with <2.5 mV offset and 2 mA per channel. Use Value: Extends battery life beyond 200 hours while preserving measurement accuracy across full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP484ESZ | Wider supply range (±4.5 V to ±18 V), higher quiescent current (1.5 mA per amp), 12 MHz GBW | Designed for dual-supply industrial PLC I/O modules, not optimized for 3.3 V battery systems | Select OP484ESZ only when bipolar supplies or higher output voltage swing (>±10 V) is required. |
| TLV2464CDR | Lower bandwidth (6.4 MHz), higher offset (4.5 mV max), 1.1 mA per amp, rail-to-rail I/O | Targeted at cost-sensitive consumer electronics; not qualified for automotive temperature range | Choose TLV2464CDR where budget constraints outweigh need for 24 MHz bandwidth or −40°C operation. |
Compared with OP484ESZ and TLV2464CDR, AD8648ARZ uniquely balances 24 MHz bandwidth, 1 pA input bias, and automotive-grade temperature rating in a single SOIC-14 package-making it optimal for space-constrained, high-precision, single-supply applications.
Availability
AD8648ARZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, multipole filters, and ADC front ends requiring stable component supply with guaranteed long-term availability and automotive-grade reliability.
Supply support for AD8648ARZ 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 AD864x family was designed specifically for precision, low-noise, rail-to-rail op-amp applications in portable medical devices, automotive sensors, and industrial process control systems.
FAQ
What is the maximum operating supply voltage for AD8648ARZ?
The absolute maximum supply voltage for AD8648ARZ 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 degrades bandwidth and output drive capability. The AD8648ARZ datasheet specifies full performance-including 24 MHz GBW and rail-to-rail output-only within this 2.7 V–5.5 V window.
Does AD8648ARZ include a shutdown feature like AD8647?
No, AD8648ARZ does not include a shutdown function. Unlike the AD8647 (which has SDA/SDB enable pins), the AD8648ARZ is a continuous-operation quad op-amp with no power-down capability. This is confirmed in the General Description and Ordering Guide sections of the AD8646/AD8647/AD8648 Rev. F datasheet, where shutdown functionality is explicitly attributed to AD8647 only.
What package type is used for AD8648ARZ?
AD8648ARZ uses a 14-lead SOIC_N (narrow-body) package, designated R-14 per the Analog Devices ordering guide. Its dimensions are 8.75 mm × 4.00 mm with 1.27 mm lead pitch, compliant with JEDEC MS-012-AB standards. This package is distinct from the TSSOP variant (AD8648ARUZ) and is RoHS-compliant (indicated by the 'Z' suffix).
Can AD8648ARZ drive a 600 Ω load at 25 kHz without distortion?
Yes, AD8648ARZ maintains THD+N of 0.021% at 25 kHz with AV = −10 and RL = 600 Ω, as specified in Table 1 of the Rev. F datasheet. Its 11 V/μs slew rate and 24 MHz GBW ensure linear operation into 600 Ω loads up to at least 100 kHz, making it suitable for audio line drivers and high-speed sensor interfaces requiring low harmonic distortion.
Is AD8648ARZ qualified for automotive applications?
Yes, AD8648ARZ is qualified for automotive applications, with an operating temperature range of −40°C to +125°C and testing per AEC-Q100 requirements. The Ordering Guide explicitly lists AD8648ARZ (without 'W' prefix) as rated for this full automotive temperature range, distinguishing it from commercial-grade variants limited to 0°C–70°C.
AD8648ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-SOIC
AD8648ARZ FAQ
1.How can I place an order for AD8648ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8648ARZ 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 AD8648ARZ reliable?
The price and inventory of AD8648ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8648ARZ is usually 5 days.
3.What payment methods are accepted for AD8648ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8648ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8648ARZ?
AD8648ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8648ARZ 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 AD8648ARZ?
For technical support, including AD8648ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8648ARZ requirements.
6.How does Aetrix verify that AD8648ARZ is sourced from the original manufacturer or authorized distributors?
All AD8648ARZ 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 AD8648ARZ meets industry standards.
7.What is the process for return or replacement of AD8648ARZ?
All AD8648ARZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8648ARZ, 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 AD8648ARZ part is unused and in its original packaging.
Return procedure for AD8648ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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