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Analog Devices Inc. AD8617ACPZ-R7
- Part No.:
- AD8617ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
AD8617ACPZ-R7.pdf
- Description:
- IC CMOS 2 CIRCUIT 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:707
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Product details
Overview
AD8617ACPZ-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 at 10 kHz, 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 ADC predrivers.
For engineers reviewing the AD8617ACPZ-R7 datasheet, AD8617ACPZ-R7 pinout, AD8617ACPZ-R7 application, or AD8617ACPZ-R7 equivalent, key selection criteria include its rail-to-rail I/O swing at 1.8 V supply, 1 pA max input bias current, unity-gain stability with capacitive loads up to 200 pF, and qualification for extended industrial temperature range (−40°C to +125°C).
Technical Context
The AD8617ACPZ-R7 implements a CMOS input stage with ultra-low input bias current (≤1 pA) and rail-to-rail common-mode input range extending 0.3 V beyond both rails. Its output stage supports rail-to-rail swing with ≤30 mV low-side and ≤50 mV high-side voltage drop at 1 mA load across −40°C to +125°C.
It features no phase reversal under overdrive, unity-gain stable operation, and a 350–400 kHz gain-bandwidth product depending on load. The amplifier maintains ≥68 dB CMRR and ≥64 dB PSRR over full temperature and supply range, supporting robust performance in noisy, low-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, coin-cell, and 3.3 V/5 V logic without level shifting. |
| Input Bias Current | ≤1 pA max at 25°C - preserves signal integrity in high-impedance sensor nodes and current-shunt monitoring. |
| Offset Voltage | ≤2.2 mV max - ensures ≤0.044% error at 5 V full-scale, critical for 12-bit+ precision measurement paths. |
| Voltage Noise Density | 22 nV/√Hz at 10 kHz - supports low-noise amplification of microvolt-level sensor outputs without dominating system noise floor. |
| Quiescent Current | ≤50 μA per amplifier over −40°C to +125°C - extends battery life in portable instrumentation and wireless sensor nodes. |
| CMRR | ≥68 dB over full temperature - rejects common-mode interference in unshielded PCB layouts and noisy industrial environments. |
| Gain Bandwidth Product | 350 kHz (RL = 10 kΩ) - sufficient for anti-aliasing filters, DAC buffering, and multipole active filter stages up to ~35 kHz. |
Pinout & Package
AD8617ACPZ-R7 is housed in an 8-lead LFCSP (3 mm × 3 mm body, 0.75 mm height, CP-8-21 package) with exposed thermal pad requiring connection to V– for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output A - drives low-impedance loads up to 10 mA while maintaining rail-to-rail swing. |
| 2 | –IN A | Inverting input A - high-impedance node (1 pA bias) for feedback networks and precision summing configurations. |
| 3 | +IN A | Non-inverting input A - accepts rail-to-rail common-mode signals from sensors or DACs without clipping. |
| 4 | V– | Negative supply terminal - must be connected to ground or negative rail; also ties exposed pad for thermal conduction. |
| 5 | V+ | Positive supply terminal - supplies both amplifiers; decoupling capacitor required within 1 cm for stability. |
| 6 | +IN B | Non-inverting input B - independent high-Z input for second channel; shares same supply and thermal constraints as Channel A. |
| 7 | –IN B | Inverting input B - used for differential gain stages or independent signal conditioning paths. |
| 8 | OUT B | Inverting amplifier output B - fully independent output with identical DC/AC specs to OUT A. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization with 1.8 V supply - eliminates need for level-shifting circuitry in low-voltage ASIC interfaces. |
| No phase reversal | Prevents catastrophic output latch-up during input overdrive - critical for fault-tolerant sensor front-ends and protection circuits. |
| Unity-gain stable | Operates reliably with gain = 1 and CL ≤ 200 pF - simplifies design of buffer stages without external compensation components. |
| Qualified for −40°C to +125°C | Guarantees parametric performance across automotive under-hood and industrial control environments without derating. |
| Low 1/f noise corner | 100 Hz corner frequency - minimizes drift and low-frequency errors in DC-coupled applications like strain gauge amplifiers. |
Applications
| Battery-Powered Sensor Interface | Current Shunt Monitoring |
|---|---|
|
Use Scenario: Amplifying thermistor, RTD, or bridge sensor outputs in handheld meters and IoT edge nodes powered by single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Precision DC-coupled preamplifier with rail-to-rail I/O, converting µV–mV sensor signals to 0–VSUPPLY range for 12-bit SAR ADCs. Use Value: 1 pA input bias avoids loading high-resistance sensors; 50 μA quiescent current extends runtime >1 year on CR2032 coin cell in sleep-active cycling. |
Use Scenario: Measuring bidirectional motor or load current via low-value shunt resistor (e.g., 10 mΩ) in portable power tools or battery management systems. IC Role / Device Role / Timing Role: High-common-mode rejection current-sense amplifier with gain configuration, rejecting supply ripple and EMI. Use Value: 68 dB CMRR suppresses 100 mV supply noise at 100 kHz; rail-to-rail output ensures full ADC utilization even at 1.8 V supply. |
| ADC Predischarge Buffer | DAC Output Level Shifter |
|
Use Scenario: Driving SAR ADC inputs with fast settling and minimal charge kickback in data acquisition modules with multiplexed analog front-ends. IC Role / Device Role / Timing Role: Unity-gain buffer isolating switched-capacitor ADC input from source impedance, reducing acquisition time and distortion. Use Value: 23 µs settling to 0.1% at 2 V step ensures <100 kSPS throughput; 15 Ω closed-loop output impedance prevents sampling errors. |
Use Scenario: Converting unipolar DAC output (e.g., 0–2.5 V) to bipolar range (±2.5 V) or scaling to match downstream op-amp input ranges in programmable gain stages. IC Role / Device Role / Timing Role: Precision level-shifting amplifier with matched input offsets and rail-to-rail output swing. Use Value: 2.2 mV max offset ensures <0.1% gain error in 12-bit systems; 22 nV/√Hz noise prevents degradation of DAC's intrinsic INL/DNL. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2314AIDR | Higher 100 µA/amplifier supply current; 3.5 mV max offset; 25 nV/√Hz noise at 1 kHz. | Less suitable for sub-10 µA sleep-mode systems; higher offset limits 14-bit+ precision use cases. | Select when higher drive strength (60 mA short-circuit) or wider supply range (1.8–5.5 V same) outweighs AD8617ACPZ-R7's lower noise and bias current. |
| MCP6022-I/SN | Higher 100 µA/amplifier supply current; 3.5 mV max offset; 25 nV/√Hz noise; not specified for −40°C to +125°C. | Limited to commercial temperature range (−40°C to +85°C); unsuitable for automotive or extended industrial deployments. | Select for cost-sensitive consumer applications where extended temperature rating and ultra-low bias current are not required. |
Compared with OPA2314AIDR and MCP6022-I/SN, AD8617ACPZ-R7 provides the lowest input bias current (1 pA), tightest offset (2.2 mV), and guaranteed operation across −40°C to +125°C - making it the preferred choice for high-precision, low-power, wide-temperature industrial and automotive sensing.
Availability
AD8617ACPZ-R7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, current shunt sense, and ADC predriver applications requiring stable component supply and long-term lifecycle support.
Supply support for AD8617ACPZ-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 AD8617ACPZ-R7 belongs to the AD861x family of micropower, rail-to-rail op-amps designed specifically for precision, low-voltage, single-supply signal conditioning in portable and loop-powered instrumentation.
FAQ
What is the maximum operating temperature range for AD8617ACPZ-R7?
The AD8617ACPZ-R7 is fully specified over −40°C to +125°C ambient temperature. All key parameters-including offset voltage (≤2.2 mV), supply current (≤50 μA/amplifier), and CMRR (≥68 dB)-are guaranteed across this extended industrial range, making it suitable for under-hood automotive and harsh-environment industrial applications.
Does AD8617ACPZ-R7 require external compensation for unity-gain stability?
No, AD8617ACPZ-R7 is internally compensated and unity-gain stable. It drives capacitive loads up to 200 pF without oscillation or excessive overshoot, as verified in Figure 18 and Figure 33 of the Rev. H datasheet. No external compensation network is needed for G = 1 configurations.
How is the exposed thermal pad on AD8617ACPZ-R7 connected?
The exposed pad on AD8617ACPZ-R7 (CP-8-21 package) must be soldered to the printed circuit board and electrically connected to V– (Pin 4). This connection provides critical thermal dissipation and improves electrical performance by lowering thermal resistance (θJC = 20°C/W) and reducing noise coupling.
Can AD8617ACPZ-R7 operate from a 1.8 V supply with rail-to-rail output swing?
Yes, AD8617ACPZ-R7 delivers true rail-to-rail output swing at 1.8 V supply: VOL ≤ 60 mV and VOH ≥ 1.65 V at IL = 1 mA (Table 2, Page 4). This allows full utilization of the ADC input range in ultra-low-voltage systems without external level-shifting circuitry.
Is AD8617ACPZ-R7 pin-compatible with other packages in the AD8617 family?
No, AD8617ACPZ-R7 (8-lead LFCSP, CP-8-21) has a different pinout and footprint than AD8617ARMZ (MSOP) or AD8617ARZ (SOIC_N). While all share identical electrical functionality, mechanical compatibility requires redesign due to distinct land patterns, thermal pad requirements, and pin numbering (e.g., V– is Pin 4 in LFCSP but Pin 4 in MSOP/SOIC_N is different).
AD8617ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- 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-LFCSP-WD (3x3)
AD8617ACPZ-R7 FAQ
1.How can I place an order for AD8617ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8617ACPZ-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 AD8617ACPZ-R7 reliable?
The price and inventory of AD8617ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8617ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8617ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8617ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8617ACPZ-R7?
AD8617ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8617ACPZ-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 AD8617ACPZ-R7?
For technical support, including AD8617ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8617ACPZ-R7 requirements.
6.How does Aetrix verify that AD8617ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8617ACPZ-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 AD8617ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8617ACPZ-R7?
All AD8617ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8617ACPZ-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 AD8617ACPZ-R7 part is unused and in its original packaging.
Return procedure for AD8617ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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