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Analog Devices Inc. AD8513ARZ-REEL7
- Part No.:
- AD8513ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8513ARZ-REEL7.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,705
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Product details
Overview
AD8513ARZ-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 AD8513ARZ-REEL7 datasheet, AD8513ARZ-REEL7 pinout, AD8513ARZ-REEL7 application, or AD8513ARZ-REEL7 equivalent, key selection criteria include guaranteed low TCVOS (≤5 μV/°C), unity-gain stability with ≥52° phase margin, and operation across −40°C to +125°C without phase reversal under overvoltage conditions.
Technical Context
The AD8513ARZ-REEL7 implements a JFET-input architecture with rail-to-rail output swing capability and no internal phase reversal mechanism - critical for maintaining system integrity when input signals exceed common-mode limits. Its open-loop gain exceeds 115 V/mV at ±15 V supply and maintains >44.5° phase margin even with 100 pF capacitive load.
Designed for precision analog front-ends, it supports dual-supply operation from ±5 V to ±15 V and achieves 0.0005% THD+N at 1 kHz while delivering ±70 mA output current into 600 Ω loads - making it suitable for driving multipole filters and photodiode transimpedance stages without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage (B Grade) | 0.4 mV max at 25°C - ensures ≤1 LSB error in 12-bit systems over full temperature range |
| Input Bias Current | 25 pA typical at ±15 V - enables use with >1 GΩ source impedances without significant offset shift |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz - preserves SNR in low-level sensor interfaces such as strain gauges and thermopiles |
| Gain Bandwidth Product | 8 MHz - supports stable closed-loop gain ≥100 up to 80 kHz with minimal peaking |
| Settling Time | 500 ns to 0.1% - matches DACs with <1 μs settling, eliminating need for post-DAC buffer staging |
| Supply Current per Amplifier | 2.5 mA max at −40°C to +125°C - enables four-channel precision amplification within 10 mA total budget |
| Operating Temperature Range | −40°C to +125°C - qualified for industrial control, automotive cabin electronics, and downhole instrumentation |
Pinout & Package
AD8513ARZ-REEL7 is housed in a 14-lead SOIC_N (R suffix) package with standard 1.27 mm pitch and 8.65 mm × 3.91 mm footprint. The device features four independent amplifiers sharing common V+ (Pin 4) and V− (Pin 11) rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of ±70 mA drive into 600 Ω with rail-to-rail swing |
| 2 | –IN A | Inverting input of Amp A - differential input capacitance = 12.5 pF |
| 3 | +IN A | Noninverting input of Amp A - common-mode input range extends to ±13.5 V at ±15 V supply |
| 4 | V+ | Positive supply rail - accepts ±5 V to ±15 V dual supplies |
| 5 | +IN B | Noninverting input of Amp B - electrically isolated from other channels |
| 6 | –IN B | Inverting input of Amp B - matched to Amp A for differential pair configurations |
| 7 | OUT B | Amplifier B output - identical AC/DC performance to OUT A |
| 8 | OUT C | Amplifier C output - fully independent channel with same specs as OUT A/B |
| 9 | –IN C | Inverting input of Amp C - supports multi-channel instrumentation topologies |
| 10 | +IN C | Noninverting input of Amp C - low TCVOS ensures tracking across channels |
| 11 | V− | Negative supply rail - shared return path for all four amplifiers |
| 12 | +IN D | Noninverting input of Amp D - enables simultaneous 4-channel signal acquisition |
| 13 | –IN D | Inverting input of Amp D - supports active filtering and I-V conversion |
| 14 | OUT D | Amplifier D output - completes quad configuration with full spec compliance |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed immunity to polarity inversion when inputs exceed ±15 V rails - eliminates risk of latch-up in overvoltage transients |
| Low input bias current | 25 pA typical at ±15 V enables direct connection to photodiodes and piezoelectric sensors without guard rings or leakage compensation |
| Unity-gain stable | Operates without external compensation in G = +1 configuration - simplifies PCB layout and reduces component count |
| Fast overload recovery | ≤200 ns recovery from saturation - preserves fidelity in pulse-amplification and transient-detection circuits |
| Capacitive load drive | Stable with up to 1000 pF in unity gain - supports direct interface to ADC input capacitors and long trace routing |
Applications
| Photodiode Amplification | Precision Shunt Current Sensing |
|---|---|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon PIN diodes in optical smoke detectors and spectrophotometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 MΩ to 100 MΩ feedback resistor, configured for DC-coupled operation. Use Value: 25 pA input bias current minimizes dark-current-induced offset; 8 nV/√Hz noise preserves dynamic range below 100 nA full-scale. | Use Scenario: Measuring motor phase current in industrial inverters using 10 mΩ shunt resistors at 100 A peak. IC Role / Device Role / Timing Role: Low-drift difference amplifier with matched resistor network, rejecting common-mode voltages up to ±60 V. Use Value: 0.4 mV max offset and 5 μV/°C TCVOS ensure ≤0.5% measurement error across −40°C to +85°C ambient. |
| Multipole Active Filtering | Medical Instrumentation Front-End |
Use Scenario: Implementing 4th-order low-pass Bessel filter for ECG signal conditioning before 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Quad op-amp used as two 2-pole sections in Sallen-Key topology with unity-gain buffers. Use Value: 8 MHz GBP and 52° phase margin ensure monotonic step response and <0.1 dB passband ripple up to 10 kHz. | Use Scenario: Amplifying microvolt-level neural signals from implanted electrodes in portable EEG devices. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low noise and high CMRR. Use Value: 100 dB CMRR at DC and 86 dB at 10 kHz suppresses 50/60 Hz interference; 0.0005% THD+N prevents harmonic distortion masking biological waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision JFET op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4141AIDR | Higher 12 nV/√Hz noise at 1 kHz; 1.5 mV max offset; 10 MHz GBP | Better slew rate (20 V/μs vs. 20 V/μs) but higher noise compromises low-level sensor accuracy | Select when bandwidth >8 MHz required and noise floor >12 nV/√Hz acceptable |
| LT1492CN#PBF | Lower 1.5 pA input bias current; 1.5 mV max offset; 2.5 MHz GBP | Superior input leakage for femtoamp applications but insufficient bandwidth for fast-settling DAC buffering | Select for ultra-high-impedance pH or ion-selective electrode interfaces where speed <1 MHz suffices |
Compared with OPA4141AIDR and LT1492CN#PBF, AD8513ARZ-REEL7 uniquely balances sub-millivolt offset, 25 pA bias current, and 8 MHz bandwidth - making it optimal for 12-bit+ data acquisition systems requiring both precision and speed without external compensation.
Availability
AD8513ARZ-REEL7 is available at Aetrix Electronics and suitable for medical instrumentation, industrial process control, and test & measurement equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8513ARZ-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 signal chains in harsh environments - emphasizing low drift, low noise, and robustness against input overvoltage and capacitive loading.
FAQ
What is the maximum supply voltage rating for AD8513ARZ-REEL7?
The AD8513ARZ-REEL7 has an absolute maximum supply voltage rating of ±18 V per rail. Operation beyond this limit risks permanent damage. For reliable long-term use, Analog Devices specifies continuous operation from ±5 V to ±15 V, with thermal derating applied above ±15 V. The device's PSRR remains >86 dB across this full range, ensuring stable performance under varying supply conditions.
Does AD8513ARZ-REEL7 require external compensation for unity-gain stability?
No, AD8513ARZ-REEL7 is internally compensated and unity-gain stable across its full operating temperature range (−40°C to +125°C). Its phase margin exceeds 44.5° at ±5 V and 52° at ±15 V with 2.5 kΩ load, and it remains stable driving up to 1000 pF in G = +1 configuration. No external compensation components are needed for basic buffer or follower applications.
How does AD8513ARZ-REEL7 handle input overvoltage conditions?
AD8513ARZ-REEL7 incorporates internal input protection diodes that safely clamp voltages up to 0.7 V beyond either supply rail. This prevents damage during transient overvoltage events. Unlike many JFET op-amps, it exhibits no phase reversal when inputs exceed the common-mode range - preserving signal integrity and avoiding system lockup in fault conditions.
What is the typical input bias current of AD8513ARZ-REEL7 at ±5 V supply?
At ±5 V supply and 25°C, the typical input bias current of AD8513ARZ-REEL7 is 21 pA, with a maximum of 75 pA over −40°C to +85°C. This ultra-low bias current enables direct interfacing with high-impedance sources such as photodiodes, piezoelectric sensors, and MEMS elements without significant offset error or signal attenuation.
Can AD8513ARZ-REEL7 drive heavy capacitive loads without oscillation?
Yes, AD8513ARZ-REEL7 is unconditionally stable driving up to 1000 pF in unity-gain configuration. With 500 pF load, overshoot is reduced to <3% using a 100 Ω series resistor and 1 nF capacitor snubber network external to the feedback loop. This capability allows direct connection to ADC input capacitors and long PCB traces without added isolation stages.
AD8513ARZ-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:
- Active
- 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
AD8513ARZ-REEL7 FAQ
1.How can I place an order for AD8513ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8513ARZ-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 AD8513ARZ-REEL7 reliable?
The price and inventory of AD8513ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8513ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8513ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8513ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8513ARZ-REEL7?
AD8513ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8513ARZ-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 AD8513ARZ-REEL7?
For technical support, including AD8513ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8513ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8513ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8513ARZ-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 AD8513ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8513ARZ-REEL7?
All AD8513ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8513ARZ-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 AD8513ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8513ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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