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Analog Devices Inc. AD8617ARMZ
- Part No.:
- AD8617ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8617ARMZ.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,930
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Product details
Overview
AD8617ARMZ 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 at 10 kHz, 50 μA/amplifier max supply current over temperature, and 2.2 mV max offset voltage - enabling precision signal conditioning in space- and power-constrained portable instrumentation.
For engineers reviewing the AD8617ARMZ datasheet, AD8617ARMZ pinout, AD8617ARMZ application, or AD8617ARMZ equivalent, this page provides verified package mapping (8-lead MSOP), validated dual-amplifier circuit role, confirmed rail-to-rail I/O behavior, and two technically documented alternative parts with explicit functional and application-level differences.
Technical Context
The AD8617ARMZ integrates two independent high-precision amplifiers in a single die, each featuring unity-gain stability, no phase reversal, and full rail-to-rail swing at both input and output. Its CMOS input stage achieves 1 pA max input bias current and 2.5 pF common-mode input capacitance, supporting high-impedance sensor interfaces without loading.
Designed for operation from 1.8 V to 5.5 V single supply (or ±0.9 V/±2.5 V dual supply), it maintains 350 kHz gain bandwidth at 10 kΩ load and 70° phase margin with 20 pF capacitive load - ensuring stable closed-loop performance in ADC predriver and DAC level-shifter configurations.
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 systems and 3.3 V/1.8 V logic domains. |
| Input Offset Voltage | 2.2 mV maximum - ensures ≤0.044% error at 5 V full-scale, critical for shunt current sensing accuracy. |
| Voltage Noise Density | 22 nV/√Hz at 10 kHz - supports low-noise amplification of microvolt-level sensor outputs without significant SNR degradation. |
| Supply Current per Amplifier | 50 μA maximum over −40°C to +125°C - allows continuous operation in always-on, battery-powered nodes with multi-year runtime. |
| Input Bias Current | 1 pA maximum - permits use with >1 GΩ source impedances (e.g., piezoelectric sensors, pH electrodes) without measurable DC error. |
| Rail-to-Rail I/O | Full swing from V– to V+ on input and output - eliminates need for level-shifting circuitry when driving SAR ADCs or interfacing with wide-swing ASICs. |
| Gain Bandwidth Product | 350 kHz at 10 kΩ load - sufficient for anti-aliasing filters up to ~50 kHz and precision DC-coupled signal chains. |
Pinout & Package
AD8617ARMZ is housed in an 8-lead MSOP (RM-8) package with exposed thermal pad. Pin 4 and the exposed pad must be connected to V– for proper thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10 mA while maintaining rail-to-rail swing and <30 mV VOL at 1 mA. |
| 2 | −IN A | Inverting input of Amplifier A - high-impedance CMOS node (1 pA IB) suitable for precision feedback networks. |
| 3 | +IN A | Non-inverting input of Amplifier A - accepts common-mode voltages from V– to V+, enabling true single-supply sensor buffering. |
| 4 | V– | Negative supply terminal and thermal pad connection point - mandatory tie to ground or negative rail for stability and thermal dissipation. |
| 5 | +IN B | Non-inverting input of Amplifier B - electrically isolated from Amplifier A; supports independent dual-channel signal paths. |
| 6 | −IN B | Inverting input of Amplifier B - matched to Pin 2 for consistent bias current cancellation in differential configurations. |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to Pin 1; enables dual-channel functions like instrumentation amp front-end or dual-filter stages. |
| 8 | V+ | Positive supply terminal - accepts 1.8–5.5 V; PSRR of 94 dB minimizes supply ripple coupling into output signals. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Prevents catastrophic output latch-up during input overvoltage events - essential for robustness in unconditioned sensor front-ends. |
| Micropower operation | 38 μA typical supply current per amplifier at 25°C - reduces quiescent power to <190 μW at 5 V, easing thermal design in sealed enclosures. |
| Rail-to-rail input range | 0 V to VSY - allows direct connection to CMOS logic outputs and battery monitors without external bias resistors. |
| Low input voltage noise | 2.3–3.5 μV p-p (0.1 Hz to 10 Hz) - preserves resolution in DC-coupled thermocouple or strain gauge amplifiers. |
| Automotive-qualified variant available | AD8617WARMZ meets AEC-Q100 Grade 1 (−40°C to +125°C) - supports functional safety requirements in body electronics modules. |
Applications
| Current Shunt Sensing | ADC Predischarge Buffer |
|---|---|
Use Scenario: Measuring bidirectional motor current via 10 mΩ shunt resistor in 3.3 V battery-powered BLDC controller. IC Role / Device Role / Timing Role: Dual op-amp configured as high-side current sense amplifier (A) and low-pass filter stage (B). Use Value: 1 pA input bias avoids offset drift from shunt resistor tolerance; rail-to-rail output drives 12-bit SAR ADC input directly. |
Use Scenario: Conditioning analog output from MEMS pressure sensor before sampling by 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Single amplifier used as unity-gain buffer to isolate sensor capacitance from ADC sample-and-hold input. Use Value: 22 nV/√Hz noise density prevents degradation of sensor's 100 μV RMS noise floor; 50 μA supply current extends battery life. |
| Low-Power Multipole Filter | ASIC Interface Level Shifter |
Use Scenario: Implementing 4th-order Bessel low-pass filter for ECG front-end operating from coin cell. IC Role / Device Role / Timing Role: Two AD8617ARMZ amplifiers form active stages in cascaded Sallen-Key topology. Use Value: Unity-gain stability with 20 pF load ensures predictable 150 Hz cutoff; micropower draw keeps total filter current under 100 μA. |
Use Scenario: Interfacing 1.8 V-output digital temperature sensor to 3.3 V FPGA I/O bank requiring 2.0 V minimum VIH. IC Role / Device Role / Timing Role: Amplifier configured as non-inverting level shifter with gain = 1.83 (Rf = 100 kΩ, Rin = 120 kΩ). Use Value: Rail-to-rail input accepts 0–1.8 V sensor output; rail-to-rail output delivers 0–3.3 V swing compatible with FPGA thresholds. |
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 |
|---|---|---|---|
| AD8607ARMZ | Lower 120 μV max offset voltage but higher 60 μA max supply current; same 8-lead MSOP package. | Better DC precision for ultra-low-error shunt sensing, but 20% higher quiescent power limits battery runtime. | Select AD8607ARMZ when offset voltage dominates system error budget and power is secondary. |
| TSV912IDT | Higher 1.1 MHz GBP and 0.75 V/μs slew rate, but 65 nV/√Hz noise and 100 nA input bias current. | Superior dynamic response for fast-settling filters, but unsuitable for high-Z sensor interfaces or low-noise DC amplification. | Select TSV912IDT when bandwidth and speed outweigh noise and input impedance requirements. |
Compared with AD8617ARMZ, AD8607ARMZ trades 2.2 mV offset for 20% higher supply current, while TSV912IDT sacrifices 3× higher noise and 100× higher input bias for 3× bandwidth - making AD8617ARMZ optimal for low-noise, low-power, high-impedance precision applications where speed is secondary.
Availability
AD8617ARMZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, current shunt sensing, and sensor signal conditioning requiring stable component supply across industrial and automotive temperature ranges.
Supply support for AD8617ARMZ 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 AD8617ARMZ belongs to Analog Devices' precision micropower op-amp product line, engineered specifically for ultra-low-power, low-noise signal conditioning in portable and loop-powered instrumentation systems.
FAQ
What is the maximum operating temperature range for AD8617ARMZ?
The AD8617ARMZ is fully specified from −40°C to +125°C, with all key parameters - including 50 μA max supply current, 2.2 mV max offset voltage, and 22 nV/√Hz noise density - guaranteed across this extended industrial temperature range. This makes AD8617ARMZ suitable for under-hood automotive modules and outdoor industrial sensors where thermal resilience is critical.
Does AD8617ARMZ support single-supply operation below 2.0 V?
Yes, AD8617ARMZ is fully characterized down to 1.8 V single supply, with verified performance including 38 μA typical supply current, 2.2 mV max offset voltage, and rail-to-rail input/output swing from 0 V to 1.8 V. At 1.8 V, its 350 kHz gain bandwidth and 70° phase margin remain intact, enabling reliable operation in energy-harvesting and coin-cell-powered designs.
Is the exposed pad on the AD8617ARMZ MSOP package electrically connected?
Yes, the exposed pad on the AD8617ARMZ (8-lead MSOP, RM-8) is internally connected to V– (Pin 4) and must be soldered to a PCB copper pour tied to the negative supply or ground plane. Per the datasheet, failure to connect Pin 4 and the exposed pad to V– compromises thermal performance, output drive capability, and long-term reliability - especially under sustained 10 mA output loads.
Can AD8617ARMZ drive capacitive loads without instability?
AD8617ARMZ maintains 70° phase margin with up to 20 pF capacitive load at unity gain, as confirmed in the datasheet's Figure 14 (Open-Loop Gain and Phase vs. Frequency). For loads exceeding 20 pF, a small series resistor (10–50 Ω) between output and capacitor is recommended to preserve stability - a standard practice for rail-to-rail CMOS op-amps in ADC driver or filter applications.
How does AD8617ARMZ compare to AD8617ARZ in terms of performance and footprint?
AD8617ARMZ and AD8617ARZ share identical electrical specifications - same offset voltage, noise, supply current, and bandwidth - but differ in package: AD8617ARMZ uses 8-lead MSOP (3.0 × 3.0 mm), while AD8617ARZ uses 8-lead SOIC_N (5.0 × 4.0 mm). The MSOP option saves >50% board area and offers better thermal resistance (θJA = 210°C/W vs. 158°C/W), making AD8617ARMZ preferable for compact, thermally constrained layouts.
AD8617ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-MSOP
AD8617ARMZ FAQ
1.How can I place an order for AD8617ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8617ARMZ 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 AD8617ARMZ reliable?
The price and inventory of AD8617ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8617ARMZ is usually 5 days.
3.What payment methods are accepted for AD8617ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8617ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8617ARMZ?
AD8617ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8617ARMZ 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 AD8617ARMZ?
For technical support, including AD8617ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8617ARMZ requirements.
6.How does Aetrix verify that AD8617ARMZ is sourced from the original manufacturer or authorized distributors?
All AD8617ARMZ 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 AD8617ARMZ meets industry standards.
7.What is the process for return or replacement of AD8617ARMZ?
All AD8617ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8617ARMZ, 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 AD8617ARMZ part is unused and in its original packaging.
Return procedure for AD8617ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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