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Analog Devices Inc. AD712TRZ-EP-R7
- Part No.:
- AD712TRZ-EP-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD712TRZ-EP-R7.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
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Product details
Overview
AD712TRZ-EP-R7 from Analog Devices is a dual precision, low-cost, high-speed BiFET operational amplifier engineered for military-grade operation across −55°C to +125°C. It delivers 16 V/μs minimum slew rate, 3 MHz minimum unity-gain bandwidth, and ±0.01% settling in 1.0 μs - enabling high-fidelity buffering of 12-bit DACs/ADCs and photodiode preamplification in harsh-environment instrumentation.
For engineers reviewing the AD712TRZ-EP-R7 datasheet, AD712TRZ-EP-R7 pinout, AD712TRZ-EP-R7 application, or AD712TRZ-EP-R7 equivalent, key selection criteria include guaranteed military-temperature performance, laser-trimmed DC accuracy (3 mV max input offset voltage), ultra-low input bias current (25 pA typ at 25°C), and SOIC_N package compatibility with legacy LF412/TL082 designs.
Technical Context
The AD712TRZ-EP-R7 integrates two independent BiFET op amps on a single die, each featuring JFET-input stages for femtoamp-level input bias current and high input impedance (3 × 10¹² Ω || 5.5 pF). Its architecture supports rail-to-rail input common-mode range up to ±11.5 V with ±15 V supplies and maintains 88 dB CMRR at DC.
DC precision is ensured via on-wafer laser trimming, yielding 7 μV/°C max input offset drift and 150 V/mV min open-loop gain. AC performance is stabilized by internal compensation, delivering 120 dB crosstalk rejection at 1 kHz and 90 dB at 100 kHz between amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 16 V/μs min - enables accurate reproduction of fast 12-bit DAC output transients without slewing distortion |
| Unity-Gain Bandwidth | 3.0 MHz min - supports stable unity-gain buffer configurations for wideband signal conditioning |
| Input Offset Voltage | 3 mV max over temp - ensures ≤0.07% full-scale error in 12-bit systems with ±10 V input range |
| Input Bias Current | 25 pA typ at 25°C - critical for low-leakage photodiode and high-impedance sensor interfaces |
| Common-Mode Rejection | 88 dB min at DC - preserves signal integrity in noisy industrial sensor front-ends |
| Operating Temperature | −55°C to +125°C - qualified per AQEC standard for defense/aerospace deployment |
| Supply Range | ±4.5 V to ±18 V - allows flexible power architecture design in mixed-signal embedded systems |
Pinout & Package
AD712TRZ-EP-R7 is housed in an 8-lead SOIC_N (R-8) package compliant with JEDEC MS-012-AA, with 1.27 mm lead pitch and 5.00 mm × 4.00 mm body dimensions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp 1) | Differential input node for first op amp; accepts signals referenced to system ground or virtual ground |
| 2 | Noninverting Input (Amp 1) | High-impedance input for feedback configuration or reference signal injection |
| 3 | Output (Amp 1) | Class AB output stage capable of ±13 V swing into 2 kΩ load at ±15 V supply |
| 4 | V− | Negative supply rail connection; must be decoupled locally to minimize noise coupling |
| 5 | Inverting Input (Amp 2) | Independent second amplifier input; electrically isolated from Amp 1 with 120 dB crosstalk rejection |
| 6 | Noninverting Input (Amp 2) | Second high-Z input for differential pair or dual-channel signal processing |
| 7 | Output (Amp 2) | Separate output driver with identical AC/DC specs to Amp 1; supports dual-buffering topologies |
| 8 | V+ | Positive supply rail; requires local 0.1 μF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Military temperature qualification | AQEC-compliant manufacturing baseline with controlled fab/assembly/test sites and enhanced change notification |
| Laser-trimmed DC accuracy | Guaranteed 3 mV max input offset voltage and 7 μV/°C max drift over full −55°C to +125°C range |
| Ultra-low input bias current | 25 pA typical at 25°C - enables stable operation with >1 GΩ source impedances in photodiode preamps |
| High-speed settling | 1.0 μs to ±0.01% - meets timing budget for 12-bit data acquisition systems sampling at ≥1 MSPS |
| Enhanced replacement capability | Pin- and function-compatible upgrade path from LF412 and TL082 with improved noise, speed, and temperature stability |
Applications
| Photodiode Preamp | 12-Bit DAC Buffer |
|---|---|
Use Scenario: Amplifying weak current signals from radiation-hardened photodiodes in space-based optical sensors operating at −55°C to +125°C. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and high CMRR to reject EMI-induced common-mode noise. Use Value: 25 pA input bias current prevents signal loss across >1 GΩ feedback resistors; 88 dB CMRR maintains SNR in high-noise launch environments. | Use Scenario: Driving the reference input of a 12-bit SAR ADC in avionics flight control computers requiring deterministic settling. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC output from ADC input capacitance while preserving monotonicity. Use Value: 1.0 μs ±0.01% settling guarantees full-scale step response within one ADC conversion cycle at 1 MSPS sampling rates. |
| Active Filter Stage | High-Speed Integrator |
Use Scenario: Second-order Sallen-Key low-pass filter in missile guidance inertial measurement unit (IMU) analog front-end. IC Role / Device Role / Timing Role: Precision gain stage with 3 MHz bandwidth and low THD (0.0003%) to maintain phase linearity below 100 kHz. Use Value: 3.0 MHz unity-gain bandwidth supports filter cutoff frequencies up to 100 kHz with <0.1° phase error at corner frequency. | Use Scenario: Analog integrator in radar pulse compression circuits where long-term DC stability impacts range resolution. IC Role / Device Role / Timing Role: Precision integrator using laser-trimmed input offset and low drift to minimize baseline wander over 10-second integration windows. Use Value: 15 μV/month long-term offset stability limits integration error to <1 LSB in 12-bit systems over mission durations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LF412MDT-ND | Lower slew rate (12 V/μs), wider offset drift (25 μV/°C), no AQEC qualification | Qualified only for commercial/military-industrial use; not rated for extended −55°C operation | Select when cost sensitivity outweighs need for guaranteed 125°C operation and laser-trimmed stability |
| TL082CDR | Higher input bias current (300 pA), lower CMRR (70 dB), no extended temperature support | Designed for general-purpose lab equipment; lacks radiation-tolerant process and screening | Choose for non-critical test fixtures where 125°C operation and sub-pA leakage are unnecessary |
Compared with LF412MDT-ND and TL082CDR, the AD712TRZ-EP-R7 provides superior DC precision, lower input bias current, and verified operation across −55°C to +125°C - making it the only option qualified for flight-critical analog signal chains requiring AQEC compliance and long-term parametric stability.
Availability
AD712TRZ-EP-R7 is available at Aetrix Electronics and suitable for defense electronics, aerospace instrumentation, and high-reliability industrial control systems requiring stable component supply under extreme thermal cycling and long product lifecycles.
Supply support for AD712TRZ-EP-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The AD712-EP product line delivers radiation-tolerant, temperature-hardened op amps optimized for defense/aerospace signal conditioning where reliability, DC accuracy, and long-term stability supersede cost or power efficiency.
FAQ
What is the guaranteed operating temperature range for the AD712TRZ-EP-R7?
The AD712TRZ-EP-R7 is fully specified and tested from −55°C to +125°C per AQEC standards. All electrical parameters - including input offset voltage, slew rate, and open-loop gain - are guaranteed across this full military temperature range, unlike commercial variants that only specify 25°C or 0°C to +70°C performance.
Is the AD712TRZ-EP-R7 pin-compatible with the standard AD712 or LF412?
Yes, the AD712TRZ-EP-R7 uses the same 8-lead SOIC_N (R-8) package and identical pinout as the commercial AD712 and LF412. This enables drop-in replacement in existing PCB layouts without modification, provided the system's thermal and reliability requirements align with the EP grade's extended qualification.
What is the maximum input common-mode voltage range for the AD712TRZ-EP-R7 at ±15 V supplies?
At ±15 V supplies, the AD712TRZ-EP-R7 supports a common-mode input voltage range of −11.5 V to +14.5 V. Operation beyond these limits - particularly exceeding −14.1 V negative common-mode voltage - may cause output phase reversal, as documented in the Absolute Maximum Ratings table.
Does the AD712TRZ-EP-R7 require external compensation for unity-gain stability?
No, the AD712TRZ-EP-R7 is internally compensated for unity-gain stability. The device achieves 60° phase margin at unity gain with a 2 kΩ load and 100 pF capacitive load, as verified in Figure 11 of the datasheet - eliminating the need for external compensation networks in standard buffer configurations.
How does the AD712TRZ-EP-R7 achieve its low input bias current specification?
The AD712TRZ-EP-R7 achieves 25 pA typical input bias current through JFET-input transistor technology combined with proprietary oxide passivation and guard ring structures. This construction minimizes surface leakage paths, enabling reliable operation with high-impedance sources such as photodiodes and piezoelectric sensors across the full −55°C to +125°C range.
AD712TRZ-EP-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- 4 MHz
- Current - Input Bias:
- 25 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 5mA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD712TRZ-EP-R7 FAQ
1.How can I place an order for AD712TRZ-EP-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD712TRZ-EP-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 AD712TRZ-EP-R7 reliable?
The price and inventory of AD712TRZ-EP-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD712TRZ-EP-R7 is usually 5 days.
3.What payment methods are accepted for AD712TRZ-EP-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD712TRZ-EP-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD712TRZ-EP-R7?
AD712TRZ-EP-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD712TRZ-EP-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 AD712TRZ-EP-R7?
For technical support, including AD712TRZ-EP-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD712TRZ-EP-R7 requirements.
6.How does Aetrix verify that AD712TRZ-EP-R7 is sourced from the original manufacturer or authorized distributors?
All AD712TRZ-EP-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 AD712TRZ-EP-R7 meets industry standards.
7.What is the process for return or replacement of AD712TRZ-EP-R7?
All AD712TRZ-EP-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD712TRZ-EP-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 AD712TRZ-EP-R7 part is unused and in its original packaging.
Return procedure for AD712TRZ-EP-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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