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Analog Devices Inc. AD8513ARUZ-REEL
- Part No.:
- AD8513ARUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8513ARUZ-REEL.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,044
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Product details
Overview
AD8513ARUZ-REEL from Analog Devices is a quad precision JFET operational amplifier optimized for high-impedance sensor signal conditioning and low-noise current measurement. It delivers 400 μV max offset voltage, 8 nV/√Hz voltage noise at 1 kHz, 20 V/μs slew rate, and operates from ±5 V to ±15 V supplies across −40°C to +125°C. It is used in photodiode amplifiers, precision instrumentation, and medical-grade analog front-ends.
For engineers reviewing the AD8513ARUZ-REEL datasheet, AD8513ARUZ-REEL pinout, AD8513ARUZ-REEL application, or AD8513ARUZ-REEL equivalent, key selection criteria include guaranteed 0.1% settling in 500 ns, no phase reversal under overvoltage, unity-gain stability with ≥1000 pF capacitive loads, and ultra-low input bias current (25 pA typ at ±15 V) enabling high-Z source interfacing without guard rings or bootstrapping.
Technical Context
The AD8513ARUZ-REEL implements a fully differential JFET input stage with matched P-channel devices, delivering sub-nA input bias current and <1 μV/°C typical TCVOS. Its internal compensation ensures unity-gain stability while maintaining 8 MHz gain bandwidth and 52° phase margin into 2.5 kΩ + 20 pF loads.
It features rail-to-rail output swing capability (±4.9 V min into 2 kΩ at ±5 V), robust input overvoltage protection (±0.7 V beyond rails), and symmetric ±200 ns overload recovery - critical for precision DAC buffering and transient-rich sensor interfaces where signal fidelity must be preserved across fast transients and wide common-mode excursions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±15 V - supports dual-supply industrial and test equipment rails without level-shifting. |
| Input Bias Current | 25 pA typical at ±15 V - enables direct connection to >1 GΩ sources (e.g., piezoelectric sensors, pH electrodes) without significant error. |
| Offset Voltage (B Grade) | 0.4 mV max at 25°C - ensures ≤0.04% full-scale error in 10 V-range precision measurement systems. |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz - dominates total noise in photodiode circuits with source resistances <3.9 kΩ. |
| Settling Time | 500 ns to 0.1% (0 V → 4 V step) - matches or exceeds 12-bit DAC settling requirements without external post-filtering. |
| Output Drive | ±54 mA short-circuit current - sustains stable operation driving 600 Ω loads or multiple parallel inputs in active filter stages. |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood, industrial motor control, and aerospace avionics environments. |
Pinout & Package
AD8513ARUZ-REEL is housed in a 14-lead TSSOP (RU suffix) package, 5.0 mm × 4.4 mm × 1.2 mm body height, lead pitch 0.65 mm, RoHS-compliant matte tin finish. Thermal resistance θJA = 180°C/W, θJC = 35°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network; capable of ±54 mA sink/source into 600 Ω. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node; requires symmetrical layout to minimize CMRR degradation. |
| 3 | +IN A | Non-inverting input of Amp A - connects directly to high-Z sensors; protected to ±0.7 V beyond rails. |
| 4 | V+ | Positive supply rail - decoupling capacitor (≥0.1 μF ceramic) required within 5 mm for stability. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from Amp A; shares same V+ and V− pins. |
| 6 | –IN B | Inverting input of Amp B - independent bias path; no crosstalk with Amp A per datasheet Figure 58. |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to OUT A; usable for differential output or dual-channel filtering. |
| 8 | OUT C | Amplifier C output - fully independent channel; supports simultaneous multi-sensor readout without shared error terms. |
| 9 | –IN C | Inverting input of Amp C - matched input capacitance (12.5 pF diff) ensures consistent frequency response across all four channels. |
| 10 | +IN C | Non-inverting input of Amp C - low TCVOS (1 μV/°C typ) maintains accuracy across temperature gradients in PCB layouts. |
| 11 | V− | Negative supply rail - return path for all four amplifiers; star-ground connection recommended for low-noise designs. |
| 12 | +IN D | Non-inverting input of Amp D - supports independent reference buffer or calibration channel in metrology systems. |
| 13 | –IN D | Inverting input of Amp D - low input offset current (<50 pA max) prevents drift in high-gain I-V converters. |
| 14 | OUT D | Amplifier D output - delivers same 20 V/μs slew rate and 0.1% settling as other channels for time-aligned multi-channel acquisition. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed operation without polarity inversion when inputs exceed ±13.5 V common-mode range at ±15 V supply - eliminates system lockup risk in overvoltage-prone sensor interfaces. |
| Capacitive load drive | Stable with ≥1000 pF in unity gain - enables direct driving of ADC input capacitors, long cables, or anti-alias filters without external isolation resistors. |
| Low THD + noise | 0.0005% at 1 kHz - preserves dynamic range in audio preamps and high-fidelity signal chains where harmonic distortion degrades SNR. |
| Fast overload recovery | ≤200 ns symmetric positive/negative recovery - maintains timing integrity in multiplexed sensor arrays where transient spikes occur between channels. |
| Input overvoltage protection | ±0.7 V beyond rails - allows safe interfacing with unconditioned transducer outputs without external clamping diodes or series resistors. |
Applications
| Photodiode Amplification | Precision Current Measurement |
|---|---|
|
Use Scenario: Converting nanoamp-level photocurrent from scientific-grade photodiodes into low-noise voltage signals for spectroscopy or particle detection. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 1 GΩ feedback resistor, leveraging 25 pA input bias current and 8 nV/√Hz noise to achieve >120 dB dynamic range. Use Value: Enables single-amplifier TIA design without guard traces or bootstrapping, reducing board area and parasitic capacitance-induced peaking. |
Use Scenario: Measuring shunt-based current in motor control inverters or battery management systems with ±0.1% accuracy over temperature. IC Role / Device Role / Timing Role: High-side or low-side current sense amplifier with 400 μV max offset and <1 μV/°C drift, rejecting common-mode voltages up to ±13.5 V. Use Value: Eliminates need for auto-zero or chopper amplifiers in cost-sensitive industrial drives, preserving bandwidth and avoiding switching artifacts. |
| Medical Instrumentation | Multipole Active Filters |
|
Use Scenario: Front-end amplification in ECG/EEG systems requiring ultra-low noise, DC precision, and immunity to electrode motion artifacts. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with 100 dB CMRR at 60 Hz and 0.1% settling in 500 ns for rapid baseline restoration after pacing pulses. Use Value: Supports 12-bit+ resolution without digital post-correction, meeting IEC 60601-2-27 linearity requirements for diagnostic-grade devices. |
Use Scenario: Implementing 4th-order low-pass filters in data acquisition systems with sharp roll-off and minimal passband ripple. IC Role / Device Role / Timing Role: Quad op-amp configured as two biquad sections (Sallen-Key or MFB), exploiting 8 MHz GBP and 52° phase margin for stable high-Q responses. Use Value: Achieves <0.01 dB passband flatness to 100 kHz using only passive components and one AD8513ARUZ-REEL - reduces component count vs. discrete dual-amplifier solutions. |
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 | Lower input bias current (10 pA typ), higher GBP (10 MHz), but higher voltage noise (11 nV/√Hz) and no guaranteed 0.1% settling spec. | Better for ultra-high-Z sources (>10 GΩ), less suitable for low-noise photodiode amps below 100 kHz. | Select OPA4141AIDR when input bias current dominates error budget; verify settling performance in target closed-loop configuration. |
| LT1492CN#PBF | Wider supply range (±20 V), lower offset drift (0.6 μV/°C), but slower settling (1.2 μs to 0.1%) and no 125°C rating. | Suitable for legacy ±15 V lab equipment upgrades, not for automotive or extended-temp industrial use. | Choose LT1492CN#PBF only for designs requiring >±15 V operation and where temperature range is limited to −40°C to +85°C. |
Compared with OPA4141AIDR and LT1492CN#PBF, AD8513ARUZ-REEL uniquely balances ultra-low input bias current, sub-μV/°C drift, 500 ns settling, and full −40°C to +125°C qualification - making it the only option among the three qualified for automotive sensor modules and high-reliability industrial controllers.
Availability
AD8513ARUZ-REEL is available at Aetrix Electronics and suitable for precision instrumentation, medical diagnostics, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8513ARUZ-REEL 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 Wilmington, MA, serving industrial, automotive, communications, and healthcare markets.
AD8513ARUZ-REEL belongs to the AD851x family of precision JFET op-amps designed specifically for high-impedance, low-noise, wide-bandwidth signal conditioning in metrology-grade equipment and safety-critical sensor interfaces.
FAQ
What is the maximum capacitive load the AD8513ARUZ-REEL can drive stably in unity gain?
The AD8513ARUZ-REEL is unconditionally stable driving up to 1000 pF in unity-gain configuration per the datasheet. This allows direct interfacing with ADC input capacitors, long PCB traces, or anti-alias filter networks without external isolation. For loads >500 pF, a snubber network (e.g., 100 Ω + 1 nF) is recommended to suppress overshoot; Figure 46 confirms <3% overshoot at 500 pF with this network. Stability is verified across −40°C to +125°C and ±5 V to ±15 V supply ranges.
Does the AD8513ARUZ-REEL exhibit phase reversal when input voltages exceed the supply rails?
No, the AD8513ARUZ-REEL does not exhibit phase reversal under any condition, including input voltages exceeding the supply rails by up to ±0.7 V. This is explicitly guaranteed in the General Description and confirmed in Figure 40 (No Phase Reversal). Unlike older JFET amplifiers, its input stage incorporates internal protection that prevents polarity inversion - eliminating risks of system lockup or latch-up in sensor interfaces exposed to transients or improper power sequencing.
What is the guaranteed input offset voltage specification for the AD8513ARUZ-REEL over temperature?
The AD8513ARUZ-REEL is specified with a maximum input offset voltage of 0.8 mV over the full −40°C to +125°C operating range for the B grade (as stated in Table 1, "Offset Voltage (B Grade)" row). This is tighter than the A grade's 1.8 mV max. The typical offset drift is 1 μV/°C, ensuring minimal drift-induced error in precision current sensing or strain gauge bridges across industrial temperature extremes.
How does the AD8513ARUZ-REEL perform in photodiode amplifier (TIA) configurations?
The AD8513ARUZ-REEL excels in TIA applications due to its 25 pA typical input bias current (enabling >1 GΩ feedback resistors), 8 nV/√Hz voltage noise at 1 kHz, and low input capacitance (12.5 pF differential). These parameters ensure high dynamic range and minimal noise contribution in scientific photodiode circuits. Its lack of phase reversal and robust capacitive load drive further simplify layout by eliminating guard rings and output isolation resistors typically needed with competing amplifiers.
Is the AD8513ARUZ-REEL pin-compatible with other members of the AD851x family?
No, the AD8513ARUZ-REEL is not pin-compatible with AD8510 or AD8512. It uses a 14-lead TSSOP (RU) or SOIC_N (R) package with a unique 14-pin quad layout (Figure 5/6), whereas AD8510/AD8512 use 8-lead MSOP or SOIC_N packages. Pin assignments differ fundamentally - e.g., AD8513 dedicates pins 1–3 to Amp A and pins 5–7 to Amp B, while AD8512 uses pins 1–3 for Amp A and pins 6–8 for Amp B in an 8-pin footprint. Board redesign is required for substitution.
AD8513ARUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
AD8513ARUZ-REEL FAQ
1.How can I place an order for AD8513ARUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8513ARUZ-REEL 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 AD8513ARUZ-REEL reliable?
The price and inventory of AD8513ARUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8513ARUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8513ARUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8513ARUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8513ARUZ-REEL?
AD8513ARUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8513ARUZ-REEL 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 AD8513ARUZ-REEL?
For technical support, including AD8513ARUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8513ARUZ-REEL requirements.
6.How does Aetrix verify that AD8513ARUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8513ARUZ-REEL 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 AD8513ARUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8513ARUZ-REEL?
All AD8513ARUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8513ARUZ-REEL, 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 AD8513ARUZ-REEL part is unused and in its original packaging.
Return procedure for AD8513ARUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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