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Analog Devices Inc. AD8656WARMZ-REEL
- Part No.:
- AD8656WARMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8656WARMZ-REEL.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,734
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Product details
Overview
AD8656WARMZ-REEL from Analog Devices is a dual-channel, low-noise, precision CMOS operational amplifier qualified for automotive applications. It delivers 2.7 nV/√Hz input voltage noise at 10 kHz, 250 µV max offset voltage over common-mode range, and rail-to-rail input/output swing across 2.7 V to 5.5 V supply. It operates from −40°C to +125°C and is used in ADC/DAC buffering and automotive collision avoidance signal conditioning.
For engineers reviewing the AD8656WARMZ-REEL datasheet, AD8656WARMZ-REEL pinout, AD8656WARMZ-REEL application, or AD8656WARMZ-REEL equivalent, this page provides verified specifications, package mapping, functional context for high-precision analog signal chains, and validated alternative options for automotive-grade op amp selection.
Technical Context
The AD8656WARMZ-REEL is a voltage-feedback, rail-to-rail I/O precision op amp leveraging Analog Devices' DigiTrim® post-package trimming for <250 µV offset and <2.3 µV/°C drift. Its architecture supports unity-gain stability and maintains 28 MHz gain bandwidth with 11 V/µs slew rate at 5 V supply.
It features true rail-to-rail input stage enabling full-supply common-mode range (0 V to VS), and output swing within 8 mV of rails at 1 mA load. Input bias current is 1 pA typical, differential input capacitance is 9.3 pF, and THD+N is 0.0007% at 1 kHz - all specified over −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 2.7 nV/√Hz at 10 kHz - enables high-resolution sensor signal amplification without degrading SNR in low-level analog front-ends. |
| Offset Voltage | 250 µV max over VCM - ensures ≤0.005% gain error in 5 V full-scale precision measurement paths. |
| Gain Bandwidth Product | 28 MHz - supports stable closed-loop operation up to ~2.8 MHz at G = 10 for anti-aliasing and reconstruction filters. |
| Rail-to-Rail I/O | Input range: 0 V to VS; Output swing: within 8 mV of rails at 1 mA - maximizes dynamic range in single-supply 3.3 V or 5 V systems. |
| Supply Range | 2.7 V to 5.5 V - compatible with automotive 3.3 V microcontroller I/O domains and legacy 5 V data acquisition rails. |
| Temperature Range | −40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood and ADAS module deployment. |
| THD + Noise | 0.0007% at 1 kHz - preserves audio fidelity and minimizes harmonic distortion in microphone preamp and active filter stages. |
Pinout & Package
AD8656WARMZ-REEL is housed in an 8-lead MSOP (RM-8) package, Pb-free and qualified for automotive use. Pin assignments are standardized per industry dual-op-amp layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or feedback network; rail-to-rail capable, ±220 mA short-circuit current rating. |
| 2 | –IN A | Inverting input of Amplifier A - high-impedance node (1 pA bias current); requires guarding for sub-pA leakage control. |
| 3 | +IN A | Non-inverting input of Amplifier A - same impedance and noise sensitivity as –IN A; common-mode range extends to both rails. |
| 4 | V– | Negative supply rail - connects to ground or negative rail; must be bypassed with 0.1 µF ceramic capacitor placed adjacent to pin. |
| 5 | +IN B | Non-inverting input of Amplifier B - electrically isolated from Channel A; enables independent dual-path signal conditioning. |
| 6 | –IN B | Inverting input of Amplifier B - matched performance to Channel A; channel separation >100 dB at 1 kHz ensures minimal crosstalk. |
| 7 | OUT B | Amplifier B output - identical drive capability and noise performance to OUT A; supports independent feedback configuration. |
| 8 | V+ | Positive supply rail - accepts 2.7 V to 5.5 V; PSRR of 105 dB suppresses supply ripple in noisy automotive environments. |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® offset calibration | Post-package trimming achieves 250 µV max VOS and 0.4 µV/°C typical drift - eliminates need for external nulling in production systems. |
| Rail-to-rail input stage | Common-mode range from V– to V+ allows direct interfacing with unbuffered ADC references and DAC outputs without level-shifting. |
| Low 1/f noise corner | Sub-10 Hz 1/f corner (1.23 µV p-p, 0.1 Hz–10 Hz) - critical for precision DC-coupled instrumentation and weigh scale front-ends. |
| High-speed precision | 28 MHz GBP + 11 V/µs slew rate enables accurate pulse amplification and fast-settling (<370 ns to 0.1%) in data acquisition timing paths. |
| Automotive qualification | AEC-Q100 Grade 1 certified (−40°C to +125°C), with 3 kV HBM ESD rating and guaranteed parametric stability over lifetime temperature cycling. |
Applications
| ADC Buffering | Automotive Collision Avoidance |
|---|---|
Use Scenario: Driving SAR or sigma-delta ADC inputs in battery-powered industrial data loggers with 16+ bit resolution. IC Role / Device Role / Timing Role: Precision buffer isolating high-impedance sensor sources from ADC sampling capacitors; provides low-noise, low-distortion gain staging. Use Value: 2.7 nV/√Hz noise and 0.0007% THD+N preserve effective number of bits (ENOB) in 20-bit systems; rail-to-rail swing maximizes utilization of ADC input range. |
Use Scenario: Signal conditioning for ultrasonic parking sensors or radar IF amplifiers in ADAS ECUs. IC Role / Device Role / Timing Role: Low-phase-noise amplification of time-of-flight echo signals prior to envelope detection or digitization. Use Value: 28 MHz bandwidth supports >10 MHz echo bursts; −40°C to +125°C operation ensures reliability in engine bay mounting; low input bias avoids signal corruption from high-Z transducer interfaces. |
| Precision Audio Mixing | Industrial Process Control Loop |
Use Scenario: Microphone preamplifier and summing stage in automotive infotainment head units requiring wide dynamic range. IC Role / Device Role / Timing Role: Dual-channel gain block with independent channel control for multi-mic beamforming arrays. Use Value: Dual configuration reduces board space vs. two discrete op amps; 2.7 nV/√Hz noise and rail-to-rail output maintain SNR >110 dB(A) across 20 Hz–20 kHz. |
Use Scenario: Isolated 4–20 mA transmitter output stage and sensor excitation driver in programmable logic controller (PLC) analog I/O modules. IC Role / Device Role / Timing Role: Precision voltage-to-current converter and bridge sensor amplifier with matched channel tracking. Use Value: 0.4 µV/°C drift minimizes thermal-induced zero-point drift in 4–20 mA loops; dual channels enable simultaneous sensor excitation and feedback sensing with <0.01% matching error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8656ARMZ-REEL | Same die, non-automotive grade; identical electrical specs but not AEC-Q100 qualified. | Limited to commercial/industrial temperature range (−40°C to +125°C still supported, but no automotive stress testing). | Select when automotive qualification is unnecessary and cost optimization is prioritized. |
| OPA2189IDGKT | Lower offset (4 µV typ), higher GBW (12 MHz), but higher noise (5.2 nV/√Hz) and no AEC-Q100 certification. | Better for ultra-low-offset DC applications; unsuitable for automotive safety-critical modules due to lack of qualification. | Choose only for non-automotive high-precision DC systems where offset dominates noise budget. |
Compared with AD8656WARMZ-REEL, AD8656ARMZ-REEL offers identical performance at lower cost but lacks automotive validation, while OPA2189IDGKT trades noise for offset accuracy and excludes automotive use - making AD8656WARMZ-REEL the sole qualified option for AEC-Q100-compliant dual-channel precision amplification.
Availability
AD8656WARMZ-REEL is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial PLC analog I/O, and high-fidelity audio subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8656WARMZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD865x family was designed specifically for automotive and industrial precision signal conditioning - delivering ultra-low noise, rail-to-rail operation, and AEC-Q100 qualification in compact MSOP/SOIC packages.
FAQ
What is the maximum capacitive load the AD8656WARMZ-REEL can drive without external compensation?
The AD8656WARMZ-REEL can drive up to 500 pF without oscillation, but exhibits significant ringing above 100 kHz - especially in unity-gain configuration. For stable operation with >200 pF loads, external RC snubber compensation is recommended per Figure 55 in the AD8655/AD8656 datasheet Rev. E. This preserves bandwidth while eliminating overshoot in AD8656WARMZ-REEL-based filter and driver circuits.
Does the AD8656WARMZ-REEL support true rail-to-rail input common-mode voltage?
Yes, the AD8656WARMZ-REEL features a true rail-to-rail input stage allowing common-mode voltage from V– to V+, including both supply rails. This is confirmed in the General Description and Theory of Operation sections of the datasheet, enabling direct interface with 0 V–referenced sensors and unbuffered DAC outputs without level-shifting circuitry in AD8656WARMZ-REEL designs.
Is the AD8656WARMZ-REEL pin-compatible with other dual op amps in MSOP-8 packages?
The AD8656WARMZ-REEL uses standard dual-op-amp pinout (OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+), matching industry conventions. It is pin-compatible with AD8656ARMZ-REEL and AD8656ARZ-REEL, but not with non-DigiTrim dual op amps like LMV358 or MCP6022 due to differing internal architecture and biasing - always verify layout compatibility using the AD8656WARMZ-REEL-specific footprint.
What is the guaranteed maximum offset voltage drift over temperature for the AD8656WARMZ-REEL?
The AD8656WARMZ-REEL has a maximum offset voltage drift of 2.3 µV/°C over the full −40°C to +125°C automotive temperature range, as specified in Table 1 of the Rev. E datasheet. This value is measured and guaranteed, not typical, ensuring predictable DC performance in thermally demanding ADAS and powertrain control applications using AD8656WARMZ-REEL.
Can the AD8656WARMZ-REEL be used in single-supply 3.3 V systems?
Yes, the AD8656WARMZ-REEL is fully specified down to 2.7 V supply and operates robustly at 3.3 V. At this voltage, it maintains rail-to-rail input/output swing, 27 MHz gain bandwidth, and 0.0007% THD+N - making it ideal for 3.3 V microcontroller-based data acquisition and sensor interface systems where AD8656WARMZ-REEL delivers precision without level translation.
AD8656WARMZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- DigiTrim®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11V/µs
- Gain Bandwidth Product:
- 28 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 3.7mA (x2 Channels)
- Current - Output / Channel:
- 220 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:
- 8-MSOP
AD8656WARMZ-REEL FAQ
1.How can I place an order for AD8656WARMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8656WARMZ-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 AD8656WARMZ-REEL reliable?
The price and inventory of AD8656WARMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8656WARMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8656WARMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8656WARMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8656WARMZ-REEL?
AD8656WARMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8656WARMZ-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 AD8656WARMZ-REEL?
For technical support, including AD8656WARMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8656WARMZ-REEL requirements.
6.How does Aetrix verify that AD8656WARMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8656WARMZ-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 AD8656WARMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8656WARMZ-REEL?
All AD8656WARMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8656WARMZ-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 AD8656WARMZ-REEL part is unused and in its original packaging.
Return procedure for AD8656WARMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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