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Analog Devices Inc. AD8513AR-REEL7
- Part No.:
- AD8513AR-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8513AR-REEL7.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,268
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Product details
Overview
AD8513AR-REEL7 from Analog Devices is a quad precision JFET operational amplifier optimized for high-impedance sensor signal conditioning and precision current measurement via shunt resistors. It delivers 400 µV max offset voltage, 25 pA typical input bias current at ±15 V, 8 nV/√Hz voltage noise at 1 kHz, and 0.1% settling in 500 ns - enabling accurate DC-coupled amplification in medical instrumentation and automated test equipment.
For engineers reviewing the AD8513AR-REEL7 datasheet, AD8513AR-REEL7 pinout, AD8513AR-REEL7 application, or AD8513AR-REEL7 equivalent, key selection criteria include guaranteed low TCVOS (≤5 µV/°C), unity-gain stability with ≥52° phase margin, and robust capacitive load drive up to 1000 pF without oscillation - critical for photodiode transimpedance stages and multipole filter implementations.
Technical Context
The AD8513AR-REEL7 implements a JFET-input architecture with rail-to-rail output swing and no phase reversal under input overvoltage conditions beyond supply rails. Its open-loop gain exceeds 115 V/mV at ±15 V, CMRR reaches 108 dB, and PSRR maintains 86 dB across ±4.5 V to ±18 V supply range.
Designed for extended industrial temperature operation (−40°C to +125°C), it supports dual-supply configurations from ±5 V to ±15 V and achieves 20 V/µs slew rate with 8 MHz gain-bandwidth product - ensuring fidelity in fast-settling DAC buffer and audio line-driver roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage (B Grade) | 0.4 mV max at 25°C - enables ≤12-bit accuracy without trimming in shunt-based current sensing. |
| Input Bias Current | 25 pA typical at ±15 V - preserves signal integrity with >1 GΩ source impedances (e.g., piezoelectric sensors). |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz - minimizes contribution to total system noise in low-level photodiode amplifiers. |
| Settling Time | 500 ns to 0.1% - matches sub-1 µs DAC settling requirements for precision waveform generation. |
| Supply Current per Amp | 2.5 mA max at 25°C - allows four-channel operation within 10 mA total budget for portable instrumentation. |
| Operating Temp Range | −40°C to +125°C - qualified for under-hood automotive sensor interfaces and industrial PLC analog front-ends. |
Pinout & Package
AD8513AR-REEL7 is housed in a 14-lead SOIC_N (R suffix) package with exposed pad thermal enhancement. Pin count, layout, and thermal resistance (θJA = 120°C/W) are validated per Analog Devices' Rev. K datasheet Figures 5 and 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±54 mA with rail-to-rail swing (±4.2 V @ 2 kΩ). |
| 2 | –IN A | Inverting input of Amp A - differential input capacitance 12.5 pF limits high-frequency noise coupling. |
| 3 | +IN A | Noninverting input of Amp A - common-mode input range extends to ±13.5 V at ±15 V supplies. |
| 4 | V+ | Positive supply rail - accepts ±5 V to ±15 V; PSRR of 86 dB suppresses supply ripple in sensitive analog chains. |
| 5 | +IN B | Noninverting input of Amp B - electrically isolated from other channels; supports independent sensor inputs. |
| 6 | –IN B | Inverting input of Amp B - matched to Pin 2 for common-mode rejection in differential configurations. |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to Pin 1; enables dual-channel instrumentation amplifier topologies. |
| 8 | OUT C | Amplifier C output - fully independent channel; supports 3-channel simultaneous sampling systems. |
| 9 | –IN C | Inverting input of Amp C - referenced to same V– as all channels; ensures consistent bias current paths. |
| 10 | +IN C | Noninverting input of Amp C - pin-compatible with +IN A/B for modular PCB layout reuse. |
| 11 | V– | Negative supply rail - symmetrical to V+; enables true bipolar signal handling down to −14.9 V output. |
| 12 | +IN D | Noninverting input of Amp D - fourth channel input; supports quad-channel data acquisition front-ends. |
| 13 | –IN D | Inverting input of Amp D - matched input capacitance ensures uniform frequency response across all four amps. |
| 14 | OUT D | Amplifier D output - completes quad configuration; each amp draws ≤2.5 mA for predictable thermal design. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Input voltages exceeding ±15 V rails cause no polarity inversion - eliminates risk of latch-up in overvoltage-prone sensor interfaces. |
| Unity-gain stable | Operates without external compensation in G = +1 configurations - simplifies photodiode transimpedance and buffer designs. |
| Capacitive load drive | Stable with ≥1000 pF loads in unity gain - avoids snubber networks in high-C parasitic PCB traces or long cables. |
| Low TCVOS | 1 µV/°C typical drift - reduces calibration burden in thermally varying environments like motor control enclosures. |
| High CMRR | 108 dB at DC - rejects common-mode noise from shared power supplies in multi-channel data loggers. |
Applications
| Photodiode Amplifier | Precision Current Measurement |
|---|---|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon PIN diodes in spectrophotometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 GΩ feedback resistor; AD8513AR-REEL7 provides low input bias current and 8 nV/√Hz noise to maximize SNR. Use Value: Enables detection of <100 fA signals with <0.5% THD+N, directly supporting ISO 13485-compliant medical device accuracy. | Use Scenario: Measuring motor phase current via 10 mΩ shunt resistors in industrial inverters. IC Role / Device Role / Timing Role: Differential amplifier with matched gain-setting resistors; AD8513AR-REEL7's 0.4 mV offset ensures <0.1% full-scale error at 100 A. Use Value: Eliminates need for dynamic offset cancellation, reducing BOM count and improving long-term drift stability over temperature. |
| Multipole Active Filter | Medical Instrumentation Signal Chain |
Use Scenario: Implementing 8th-order low-pass filtering for EEG signal conditioning before ADC sampling. IC Role / Device Role / Timing Role: Quad op-amp configured as cascaded Sallen-Key stages; AD8513AR-REEL7's 8 MHz GBP and 20 V/µs slew rate preserve transient fidelity. Use Value: Achieves <−80 dB stopband attenuation at 1 kHz while maintaining group delay flatness within ±0.5 µs - meeting IEC 60601-2-27 ECG timing requirements. | Use Scenario: Front-end amplification for disposable blood glucose sensor strips with integrated electrochemical cells. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with programmable gain; AD8513AR-REEL7's 25 pA input bias prevents polarization errors in low-current amperometric assays. Use Value: Delivers ±0.05% linearity over 0–500 mV input range across −20°C to +50°C, enabling FDA 510(k) submission without hardware recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision JFET op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARZ | Higher offset drift (3 µV/°C typ), lower slew rate (0.7 V/µs), but superior 0.1 Hz–10 Hz noise (110 nV p-p vs. 5.2 µV p-p). | Better suited for ultra-low-frequency DC measurements (e.g., strain gauge bridges); less ideal for fast-settling DAC buffers. | Select OP4177ARZ when sub-microvolt 0.1–10 Hz noise dominates; choose AD8513AR-REEL7 for bandwidth-critical sensor interfaces. |
| TL074CDR | Higher input bias current (300 pA typ), higher voltage noise (18 nV/√Hz), no guaranteed 125°C operation. | Limited to commercial-temp consumer audio; not qualified for industrial or medical use cases requiring extended temperature reliability. | TL074CDR is cost-effective for non-critical audio mixing; AD8513AR-REEL7 is mandatory for AEC-Q200 or IEC 61000-4-5 compliant designs. |
Compared with OP4177ARZ and TL074CDR, AD8513AR-REEL7 uniquely balances low input bias current (25 pA), fast settling (500 ns), and extended temperature qualification (−40°C to +125°C) - making it the only option among the three suitable for high-reliability, wide-bandwidth precision analog front-ends in safety-critical systems.
Availability
AD8513AR-REEL7 is available at Aetrix Electronics and suitable for medical instrumentation, industrial current monitoring, photodiode signal conditioning, and precision active filter design requiring stable component supply across extended temperature ranges.
Supply support for AD8513AR-REEL7 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 AD851x family was engineered specifically for precision DC-coupled amplification in high-impedance, low-noise applications - targeting instrumentation, medical diagnostics, and test equipment where offset, drift, and input current directly impact measurement validity.
FAQ
What is the maximum capacitive load the AD8513AR-REEL7 can drive without oscillation?
The AD8513AR-REEL7 is unconditionally stable driving up to 1000 pF in unity-gain configuration per Analog Devices Rev. K datasheet. This capability eliminates need for external compensation in PCB layouts with long traces or cable-driven outputs, unlike many competing JFET op-amps that require snubbers above 100 pF. The AD8513AR-REEL7 maintains ≥52° phase margin even with 1 nF load in parallel with 2 kΩ, preventing instability in multipole filter stages.
Does the AD8513AR-REEL7 support single-supply operation?
The AD8513AR-REEL7 is specified for dual-supply operation from ±5 V to ±15 V and does not support true single-supply operation. Its input common-mode range extends to −2.0 V and +2.5 V with ±5 V supplies, but rail-to-rail input is not guaranteed. For single-supply applications requiring ground-sensing, designers must bias inputs above V– and verify headroom using the −40°C to +125°C min/max specifications in Tables 1 and 2 of the AD8513AR-REEL7 datasheet.
How does the AD8513AR-REEL7 handle input overvoltage conditions?
The AD8513AR-REEL7 incorporates internal protection diodes allowing input voltages up to 0.7 V beyond either supply rail without damage. This feature prevents latch-up during sensor hot-plug events or ESD transients. Unlike older JFET op-amps, it exhibits no phase reversal when inputs exceed common-mode range - a critical reliability advantage in industrial fieldbus interfaces where wiring faults may apply ±20 V to pins. The AD8513AR-REEL7 maintains functional integrity under such stress per Figure 40 in its datasheet.
What is the guaranteed offset voltage specification for AD8513AR-REEL7 over temperature?
The AD8513AR-REEL7 B-grade device guarantees maximum offset voltage of 0.8 mV across the full −40°C to +125°C operating range, with typical drift of 1 µV/°C. This specification is verified per Table 1 in the Rev. K datasheet and enables 12-bit accuracy in shunt-based current measurement without trimming. At 25°C, the max offset is tighter (0.4 mV), providing margin for thermal-induced drift in enclosed enclosures.
Is the AD8513AR-REEL7 pin-compatible with other devices in the AD851x family?
The AD8513AR-REEL7 uses a 14-lead SOIC_N package distinct from the 8-lead SOIC_N used by AD8510/AD8512, so it is not pin-compatible with those variants. However, its pinout follows Analog Devices' standard quad op-amp layout (Pins 1–7 and 8–14 for two independent dual-amplifier sections), enabling consistent PCB footprint reuse across AD8513 variants (e.g., AD8513ARUZ in TSSOP). No layer changes are needed when migrating between AD8513AR-REEL7 and AD8513ARUZ.
AD8513AR-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 2.2mA (x4 Channels)
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD8513AR-REEL7 FAQ
1.How can I place an order for AD8513AR-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8513AR-REEL7 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 AD8513AR-REEL7 reliable?
The price and inventory of AD8513AR-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8513AR-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8513AR-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8513AR-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8513AR-REEL7?
AD8513AR-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8513AR-REEL7 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 AD8513AR-REEL7?
For technical support, including AD8513AR-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8513AR-REEL7 requirements.
6.How does Aetrix verify that AD8513AR-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8513AR-REEL7 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 AD8513AR-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8513AR-REEL7?
All AD8513AR-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8513AR-REEL7, 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 AD8513AR-REEL7 part is unused and in its original packaging.
Return procedure for AD8513AR-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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