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Analog Devices Inc. AD822TRZ-EP-R7
- Part No.:
- AD822TRZ-EP-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD822TRZ-EP-R7.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,129
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Product details
Overview
AD822TRZ-EP-R7 from Analog Devices is a dual-channel, precision, low-power FET-input operational amplifier engineered for military and aerospace applications. It operates from single supplies (5 V to 30 V) or dual supplies (±2.5 V to ±15 V), delivers rail-to-rail output swing within 10 mV of each rail, features 1.8 MHz unity-gain bandwidth, 3 V/μs slew rate, and supports −55°C to +125°C operation in an 8-lead SOIC_N package - ideal for photodiode preamplifiers and 12-bit to 14-bit data acquisition systems.
For engineers reviewing the AD822TRZ-EP-R7 datasheet, AD822TRZ-EP-R7 pinout, AD822TRZ-EP-R7 application, or AD822TRZ-EP-R7 equivalent, key selection criteria include its true single-supply input range extending below ground, 800 μV max input offset voltage, 25 pA max input bias current, 350 pF capacitive load drive capability, and enhanced product qualification per AQEC standards for defense-grade reliability.
Technical Context
The AD822TRZ-EP-R7 integrates two matched FET-input op amps with high-impedance differential and common-mode input stages (10¹³ Ω || 0.5 pF / 2.8 pF), enabling precision signal conditioning with gigaohm source impedances. Its input stage avoids phase inversion and supports common-mode voltages down to −0.2 V on single 5 V supply or −15.2 V on ±15 V supply.
Output stage delivers 15 mA minimum sourcing/sinking current with rail-to-rail swing and low saturation voltage (e.g., 5–7 mV at 20 μA load), while maintaining stability driving up to 350 pF directly - critical for active filter and sensor interface designs requiring wide dynamic range and low distortion (−93 dB THD at 10 kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | Single: 5 V to 30 V; Dual: ±2.5 V to ±15 V - enables flexible power architecture in harsh-environment systems. |
| Unity-Gain Bandwidth | 1.8 MHz - supports stable closed-loop gain ≥1 with sufficient phase margin for precision DC-coupled and low-frequency AC applications. |
| Slew Rate | 3 V/μs - ensures faithful reproduction of fast transients in data acquisition front-ends without slew-induced distortion. |
| Input Offset Voltage | Max 0.8 mV at 25°C - minimizes DC error in high-gain sensor amplification and reference buffering circuits. |
| Input Bias Current | Max 25 pA at 25°C - preserves signal integrity with high-impedance sources like photodiodes and piezoelectric sensors. |
| Operating Temperature | −55°C to +125°C - qualified for extended-life deployment in avionics, downhole tools, and space-qualified electronics. |
| Capacitive Load Drive | 350 pF - eliminates need for isolation resistors when driving ADC input filters or long PCB traces. |
Pinout & Package
AD822TRZ-EP-R7 is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch and narrow-body footprint (5.00 mm × 4.00 mm). Thermal resistance θJA = 160°C/W, θJC = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives external load with rail-to-rail swing and 15 mA capability; connects directly to ADC input or feedback network. |
| 2 (–IN1) | Inverting input, Amp 1 | High-impedance node (10¹³ Ω) for precision feedback configuration; sensitive to layout-induced leakage currents. |
| 3 (+IN1) | Non-inverting input, Amp 1 | Accepts input signals down to −0.2 V below ground on single 5 V supply - enables true ground-referenced sensing. |
| 4 (V–) | Negative supply rail | Connects to ground (single supply) or negative voltage rail (dual supply); must be low-impedance for noise immunity. |
| 5 (V+) | Positive supply rail | Accepts 5–30 V (single) or +2.5 to +15 V (dual); decoupling capacitor required near pin for stability. |
| 6 (OUT2) | Amplifier 2 output | Independent output channel with identical specs to OUT1; supports dual-path signal conditioning or differential driver topologies. |
| 7 (–IN2) | Inverting input, Amp 2 | Matched to –IN1 for common-mode rejection in instrumentation configurations; crosstalk < −130 dB at 1 kHz. |
| 8 (+IN2) | Non-inverting input, Amp 2 | Provides second high-Z input path; enables dual-channel photodiode preamp or active filter bank implementation. |
Key Features
| Feature | Design Value |
|---|---|
| True single-supply operation | Input common-mode range extends 0.2 V below V–, allowing direct interfacing to grounded sensors without level-shifting circuitry. |
| Rail-to-rail output swing | Output reaches within 10 mV of both supply rails, maximizing dynamic range in low-voltage systems (e.g., 5 V ADC references). |
| Low quiescent current | 800 μA per amplifier max - enables battery-powered or thermally constrained deployments without sacrificing precision. |
| No phase inversion | Eliminates output polarity reversal during input overdrive, preventing latch-up or control loop instability in closed-loop systems. |
| AQEC-enhanced product baseline | Controlled fab/assembly/test sites, military temp qualification, and enhanced change notification - meets DO-254/DO-160 design assurance requirements. |
Applications
| Photodiode Preamp | Active Filter |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in radiation-hardened optical sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current (≤25 pA) and high open-loop gain (>500 V/mV) to resolve sub-nA photocurrents. Use Value: Enables >120 dB dynamic range detection without signal degradation from input leakage or thermal drift. | Use Scenario: Implementing 2nd-order low-pass filtering in analog front-ends for precision ADCs in flight control units. IC Role / Device Role / Timing Role: Dual-channel op amp configured as Sallen-Key topology with matched internal amplifiers ensuring consistent pole placement. Use Value: Delivers −93 dB THD at 10 kHz and stable 350 pF drive capability - eliminates external buffer stages and reduces BOM count. |
| 12–14-Bit Data Acquisition | Low-Power Reference Buffer |
Use Scenario: Signal conditioning for SAR ADC inputs in ruggedized test equipment operating across −55°C to +125°C. IC Role / Device Role / Timing Role: Precision gain stage with 0.8 mV max offset and 2 μV/°C drift, driving ADC sample-and-hold with minimal settling error. Use Value: Achieves full 14-bit linearity (LSB < 300 μV) without calibration, even at temperature extremes. | Use Scenario: Isolating and buffering precision voltage references (e.g., REF195) in power management ICs for satellite subsystems. IC Role / Device Role / Timing Role: Unity-gain follower with rail-to-rail output and 15 mA drive - maintains reference accuracy under varying load conditions. Use Value: Prevents reference droop during transient load steps, ensuring stable ADC reference voltage across mission lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual FET-input op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD822ARZ | Commercial grade (−40°C to +85°C); same SOIC-8 package and core specs but lacks AQEC qualification and extended temp range. | Not suitable for defense/aerospace deployments requiring −55°C startup or 125°C sustained operation. | Select AD822TRZ-EP-R7 when environmental qualification, controlled manufacturing baseline, or enhanced product change notification are mandatory. |
| OPA211IDR | Lower noise (1.1 nV/√Hz), higher GBW (45 MHz), but higher quiescent current (3.6 mA) and narrower supply range (±2.25 V to ±18 V). | Better for high-speed, low-noise applications (e.g., audio, ultrasound), not optimized for ultra-low-power or extreme-temperature use. | Choose OPA211IDR only if bandwidth/noise outweighs power budget and temperature requirements. |
Compared with AD822ARZ, AD822TRZ-EP-R7 adds military-grade reliability and extended temperature support at modest cost premium; versus OPA211IDR, it trades bandwidth and noise performance for 78% lower quiescent current and guaranteed operation beyond 125°C - making it optimal for size-, power-, and reliability-constrained embedded systems.
Availability
AD822TRZ-EP-R7 is available at Aetrix Electronics and suitable for photodiode preamplifiers, active filters, and 12-bit to 14-bit data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD822TRZ-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 industrial, automotive, communications, and aerospace markets with precision signal chain solutions.
The AD822 product line delivers dual FET-input op amps optimized for low-power, high-impedance, and wide-temperature applications - specifically designed for sensor interfaces, data acquisition, and precision instrumentation in mission-critical environments.
FAQ
What is the maximum capacitive load the AD822TRZ-EP-R7 can drive without external compensation?
The AD822TRZ-EP-R7 is specified to drive up to 350 pF of capacitive load in unity-gain follower configuration without oscillation or instability. This capability eliminates the need for series isolation resistors in many ADC input buffer and active filter applications, simplifying layout and preserving signal fidelity. The specification holds across the full −55°C to +125°C operating range and applies to both amplifier channels independently.
Does the AD822TRZ-EP-R7 support true single-supply operation with input signals below ground?
Yes, the AD822TRZ-EP-R7 supports true single-supply operation with input common-mode voltage extending to −0.2 V below the negative rail (V–), enabling direct connection to grounded sensors or bipolar signal sources without level-shifting circuitry. This feature is validated across the full military temperature range and is critical for photodiode preamplifiers and other ground-referenced measurement systems.
What is the quiescent current consumption of the AD822TRZ-EP-R7 at maximum operating temperature?
The AD822TRZ-EP-R7 consumes 1.24 mA to 1.6 mA total (both amplifiers) over the full −55°C to +125°C range, with typical values rising to 1.6 mA at +125°C. This ultra-low power profile - just 800 μA per amplifier maximum - makes it suitable for battery-backed or thermally isolated systems where heat dissipation and energy efficiency are critical design constraints.
How does the AD822TRZ-EP-R7 handle input overvoltage conditions without phase inversion?
The AD822TRZ-EP-R7 uses a proprietary input stage architecture that prevents phase inversion during input overdrive - a failure mode common in older JFET-input op amps. When input common-mode voltage exceeds (V+ − 1 V), bandwidth decreases but output polarity remains correct, avoiding catastrophic control loop errors in closed-loop systems such as active filters or reference buffers.
Is the AD822TRZ-EP-R7 pin-compatible with standard SOIC-8 op amps like the OP27 or AD820?
No, the AD822TRZ-EP-R7 has a unique pinout optimized for dual-amplifier symmetry: pins 1–3 and 6–8 form two independent amplifier sections with shared V+ (pin 5) and V– (pin 4). It is not pin-compatible with single-channel SOIC-8 op amps (e.g., AD820) or different dual layouts (e.g., OP27 dual variants). PCB layout must follow the AD822TRZ-EP-R7-specific 8-lead SOIC_N (R-8) footprint and pin mapping.
AD822TRZ-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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 1.9 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD822TRZ-EP-R7 FAQ
1.How can I place an order for AD822TRZ-EP-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD822TRZ-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 AD822TRZ-EP-R7 reliable?
The price and inventory of AD822TRZ-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 AD822TRZ-EP-R7 is usually 5 days.
3.What payment methods are accepted for AD822TRZ-EP-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD822TRZ-EP-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD822TRZ-EP-R7?
AD822TRZ-EP-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD822TRZ-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 AD822TRZ-EP-R7?
For technical support, including AD822TRZ-EP-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD822TRZ-EP-R7 requirements.
6.How does Aetrix verify that AD822TRZ-EP-R7 is sourced from the original manufacturer or authorized distributors?
All AD822TRZ-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 AD822TRZ-EP-R7 meets industry standards.
7.What is the process for return or replacement of AD822TRZ-EP-R7?
All AD822TRZ-EP-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD822TRZ-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 AD822TRZ-EP-R7 part is unused and in its original packaging.
Return procedure for AD822TRZ-EP-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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