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Analog Devices Inc. AD8617WARZ-R7
- Part No.:
- AD8617WARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8617WARZ-R7.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,587
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Product details
Overview
AD8617WARZ-R7 from Analog Devices is a dual, micropower, rail-to-rail input/output CMOS operational amplifier optimized for low-noise, low-voltage, single-supply operation (1.8 V to 5.5 V). It delivers 22 nV/√Hz voltage noise density, 50 μA/amplifier max supply current over temperature, and 2.2 mV max offset voltage - enabling precision signal conditioning in battery-powered sensor interfaces and automotive-grade shunt current monitoring.
For engineers reviewing the AD8617WARZ-R7 datasheet, AD8617WARZ-R7 pinout, AD8617WARZ-R7 application, or AD8617WARZ-R7 equivalent, key selection criteria include its automotive qualification (AEC-Q100 Grade 1), rail-to-rail I/O swing at 1.8 V, guaranteed 70° phase margin with 20 pF load, and SOIC_N-8 package compatibility with legacy PCB layouts.
Technical Context
The AD8617WARZ-R7 implements a CMOS input stage with 1 pA max input bias current and 2.5 pF common-mode input capacitance, supporting high-impedance sensor buffering without signal degradation. Its unity-gain-stable architecture achieves 350 kHz gain bandwidth at 10 kΩ load while maintaining 70° phase margin - critical for driving ADC inputs and multipole filter stages without oscillation.
Designed for automotive environments, it operates across −40°C to +125°C with guaranteed 68 dB CMRR and 64 dB PSRR over full temperature range, and features no phase reversal under common-mode overdrive - eliminating output latch-up during transient conditions in vehicle power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V single supply - enables direct interface with Li-ion battery rails and 3.3 V/5 V microcontrollers. |
| Input Offset Voltage | 2.2 mV max - ensures ≤0.044% error at 5 V full-scale, suitable for 12-bit precision sensing. |
| Supply Current per Amplifier | 50 μA max over temperature - supports >1-year battery life in always-on sensor nodes. |
| Voltage Noise Density | 22 nV/√Hz at 10 kHz - preserves SNR in wideband sensor amplification up to 100 kHz. |
| Output Swing | Rail-to-rail (within 20 mV of rails at 1 mA) - maximizes dynamic range when driving 12-bit SAR ADCs. |
| Phase Margin | 70° with 20 pF capacitive load - guarantees stable operation driving long traces or ADC input capacitance. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 Grade 1. |
Pinout & Package
AD8617WARZ-R7 is housed in an 8-lead SOIC_N (R-8) package with standard 1.27 mm pitch, 5.00 mm × 3.96 mm body, and exposed pad not present - compatible with automated optical inspection and reflow soldering per JEDEC MS-012-AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives downstream ADC input or DAC reference buffer with rail-to-rail swing. |
| 2 | −IN A | Inverting input of Amp A - connects to feedback network or current-sense resistor top node. |
| 3 | +IN A | Non-inverting input of Amp A - accepts high-impedance sensor signals with ≤1 pA bias current error. |
| 4 | V− | Negative supply terminal - tied to ground in single-supply configurations; must be connected to system GND plane. |
| 5 | V+ | Positive supply terminal - accepts 1.8–5.5 V regulated rail; decoupling capacitor required within 1 cm. |
| 6 | +IN B | Non-inverting input of Amp B - used for differential sensing or independent signal path in dual-channel systems. |
| 7 | −IN B | Inverting input of Amp B - forms second precision gain stage for temperature-compensated transducer outputs. |
| 8 | OUT B | Amplifier B output - provides matched performance to OUT A for dual-path signal conditioning. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8 V supply headroom - critical for low-voltage ASIC interfacing and battery monitoring. |
| Automotive qualification (AEC-Q100 Grade 1) | Guarantees reliability in harsh environments: −40°C to +125°C operation, ESD robustness (HBM ±3000 V), and lifetime validation. |
| 22 nV/√Hz voltage noise density | Preserves signal integrity in high-gain sensor front-ends (e.g., thermopile, strain gauge) without degrading effective resolution. |
| No phase reversal | Prevents catastrophic output inversion during input overvoltage events - essential for fault-tolerant automotive powertrain sensors. |
| Unity-gain stable with 20 pF load | Eliminates need for external compensation when driving typical ADC input capacitance (10–25 pF) or long PCB traces. |
Applications
| Current Shunt Sensing | Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring motor phase current in 12 V automotive ECUs using a 1 mΩ shunt resistor. IC Role / Device Role / Timing Role: Dual op-amp configured as high-side current sense amplifier with matched gain paths for differential rejection. Use Value: 2.2 mV max offset ensures <10 mA measurement error at 10 A full scale; rail-to-rail output drives 12-bit ADC directly. | Use Scenario: Amplifying output of a MEMS pressure sensor with 100 mV/kPa sensitivity and 100 kΩ source impedance. IC Role / Device Role / Timing Role: Non-inverting amplifier with 10× gain, leveraging 1 pA input bias current to avoid loading sensor output. Use Value: 22 nV/√Hz noise density maintains ≥10-bit ENOB across 10 Hz–1 kHz bandwidth; 1.8 V operation extends battery life. |
| ADC Predischarge Buffer | Low-Power Multipole Filter |
Use Scenario: Driving SAR ADC sample-and-hold input in portable medical device with 3.3 V supply and 100 kSPS sampling. IC Role / Device Role / Timing Role: Unity-gain buffer isolating filter output from ADC input capacitance, preventing settling errors. Use Value: 70° phase margin ensures <0.1% settling in 23 μs with 20 pF load; 50 μA supply current minimizes system power budget. | Use Scenario: Implementing 4th-order anti-aliasing filter for automotive cabin microphone preamplifier operating from 1.8 V. IC Role / Device Role / Timing Role: Dual amplifier used in two cascaded Sallen-Key stages, each providing 2-pole response with precise component matching. Use Value: Matched dual topology ensures consistent pole placement; rail-to-rail I/O supports full 1.8 V dynamic range without clipping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8617ARZ-R7 | Commercial-grade version (non-automotive); identical electrical specs but not AEC-Q100 qualified. | Not suitable for automotive under-hood or safety-critical systems requiring automotive qualification. | Select AD8617ARZ-R7 only for industrial or consumer applications where extended temperature and automotive reliability are not required. |
| TSV912IDT | Lower supply current (38 μA typ), higher GBP (8 MHz), but 40 nV/√Hz noise and no AEC-Q100 rating. | Better for high-speed, low-power filtering but unsuitable for precision low-noise sensing or automotive deployment. | Choose TSV912IDT when bandwidth >1 MHz is needed and noise <30 nV/√Hz is acceptable; avoid for automotive or sub-μV offset-critical designs. |
Compared with AD8617ARZ-R7, the AD8617WARZ-R7 adds AEC-Q100 Grade 1 qualification and enhanced ESD robustness without sacrificing noise or offset performance; versus TSV912IDT, it trades bandwidth for lower noise and certified automotive reliability - making it optimal for precision, safety-compliant automotive signal chains.
Availability
AD8617WARZ-R7 is available at Aetrix Electronics and suitable for automotive ECU design, battery management systems, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8617WARZ-R7 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 AD8617 product line delivers micropower, rail-to-rail op-amps engineered for precision signal conditioning in space-constrained, battery-operated, and automotive-grade systems - emphasizing low noise, low offset, and guaranteed operation from 1.8 V.
FAQ
What is the maximum supply voltage for AD8617WARZ-R7?
The AD8617WARZ-R7 has an absolute maximum supply voltage rating of 6 V, but its specified operating range is 1.8 V to 5.5 V single supply. Operation above 5.5 V risks parametric degradation or permanent damage, and is not supported by characterization data. For automotive applications, 5 V nominal rail with ±10% tolerance remains within safe operating limits.
Does AD8617WARZ-R7 support true rail-to-rail input at 1.8 V supply?
Yes, AD8617WARZ-R7 supports rail-to-rail input common-mode range from V− to V+ across its full 1.8 V to 5.5 V supply range. At 1.8 V, the input voltage range is specified as 0 V to 1.8 V, verified over −40°C to +125°C. This allows direct interfacing with low-voltage sensors and ASICs without level-shifting circuitry.
Is the exposed pad on AD8617WARZ-R7 electrically connected?
No - the AD8617WARZ-R7 uses an 8-lead SOIC_N (R-8) package, which does not feature an exposed thermal pad. Unlike the LFCSP variant (AD8617ACPZ-R7), the SOIC_N package relies on lead-frame conduction and PCB copper area for thermal dissipation. No internal connection exists between the package underside and any pin.
What is the guaranteed phase margin for AD8617WARZ-R7 with capacitive loads?
The AD8617WARZ-R7 guarantees ≥70° phase margin when driving a 20 pF capacitive load with 10 kΩ or 100 kΩ resistive load, as confirmed in the datasheet's Typical Performance Characteristics (Figure 14). This ensures stable unity-gain operation into typical ADC input capacitances without external compensation.
How does AD8617WARZ-R7 differ from AD8617ARZ-R7 beyond automotive qualification?
AD8617WARZ-R7 and AD8617ARZ-R7 share identical electrical specifications, pinout, and package dimensions. The sole differences are automotive-specific process controls, extended reliability testing (AEC-Q100 Grade 1), enhanced ESD robustness (HBM ±3000 V vs. ±4000 V for commercial AD8613/AD8619), and branded marking (A23 vs. A0T). No parametric or functional divergence exists outside qualification scope.
AD8617WARZ-R7 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:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 400 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 38µA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8617WARZ-R7 FAQ
1.How can I place an order for AD8617WARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8617WARZ-R7 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 AD8617WARZ-R7 reliable?
The price and inventory of AD8617WARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8617WARZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8617WARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8617WARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8617WARZ-R7?
AD8617WARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8617WARZ-R7 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 AD8617WARZ-R7?
For technical support, including AD8617WARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8617WARZ-R7 requirements.
6.How does Aetrix verify that AD8617WARZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8617WARZ-R7 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 AD8617WARZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8617WARZ-R7?
All AD8617WARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8617WARZ-R7, 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 AD8617WARZ-R7 part is unused and in its original packaging.
Return procedure for AD8617WARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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