My Inquiry
My Account
Analog Devices Inc. AD822BRZ-REEL
- Part No.:
- AD822BRZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD822BRZ-REEL.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,115
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD822BRZ-REEL from Analog Devices is a dual-channel, precision, low-power FET-input operational amplifier optimized for single-supply (5 V to 30 V) and dual-supply (±2.5 V to ±15 V) operation. It delivers rail-to-rail output swing (within 10 mV of rails), 1.8 MHz unity-gain bandwidth, 3 V/µs slew rate, and 800 µV max input offset voltage - enabling high-fidelity signal conditioning in battery-powered medical sensors and photodiode preamplifiers.
For engineers reviewing the AD822BRZ-REEL datasheet, AD822BRZ-REEL pinout, AD822BRZ-REEL application, or AD822BRZ-REEL equivalent, this page provides verified specifications, SOIC_N package layout, real-world load drive capability (15 mA min, 350 pF capacitive), and validated alternatives for precision analog signal chains requiring low input bias current (<25 pA) and wide common-mode range extending below ground.
Technical Context
The AD822BRZ-REEL integrates two independent JFET-input amplifiers with matched dc characteristics (max 1.0 mV initial offset matching) and low crosstalk (−130 dB at 1 kHz). Its input stage operates with common-mode voltage down to −0.2 V on single 5 V supply and −15.2 V on ±15 V supply, supporting true ground-referenced sensing without level-shifting circuitry.
Output stage architecture enables stable rail-to-rail operation into resistive loads ≥600 Ω and direct capacitive loads up to 350 pF at unity gain. Quiescent current remains tightly controlled at 1.24–1.6 mA per amplifier across −40°C to +85°C, making it suitable for always-on instrumentation with strict power budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | Single: 5 V to 30 V; Dual: ±2.5 V to ±15 V - supports wide industrial and portable system voltages without external regulators. |
| Unity-Gain Bandwidth | 1.8 MHz - sufficient for 12-bit to 14-bit data acquisition systems sampling up to ~100 kSPS with adequate phase margin. |
| Slew Rate | 3 V/µs - enables clean 20 VPP output at 25 kHz (Figure 30) without slewing distortion in active filters. |
| Input Offset Voltage | Max 0.8 mV (B grade) - ensures ≤0.02% gain error in 12-bit systems with 1 V full-scale reference. |
| Input Bias Current | Max 25 pA at 25°C - preserves signal integrity with gigaohm source impedances (e.g., photodiodes, pH electrodes). |
| Capacitive Load Drive | 350 pF at G = +1 - eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces. |
| Output Current | Min 15 mA - directly drives 600 Ω loads (e.g., 5 V DAC buffers) without external boost stages. |
Pinout & Package
AD822BRZ-REEL is housed in an 8-lead SOIC_N (Small Outline Integrated Circuit, narrow body) package, 3.9 mm × 4.9 mm footprint, 1.27 mm pitch, RoHS-compliant, tape-and-reel format (REEL suffix).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - rail-to-rail capable, drives 15 mA min into resistive loads or 350 pF capacitive loads. |
| 2 | –IN1 | Inverting input of Amp 1 - high-impedance FET node (1013 Ω || 0.5 pF), sensitive to PCB leakage. |
| 3 | +IN1 | Non-inverting input of Amp 1 - same impedance as Pin 2; common-mode range extends 0.2 V below negative rail. |
| 4 | V– | Negative supply pin - connects to ground (single-supply) or negative rail (dual-supply); must be low-impedance. |
| 5 | V+ | Positive supply pin - accepts 5–30 V (single) or +2.5 to +15 V (dual); decoupling capacitor required. |
| 6 | OUT2 | Amplifier 2 output - electrically identical to Pin 1; enables dual-channel signal paths on one die. |
| 7 | –IN2 | Inverting input of Amp 2 - matched to Pin 2 for differential configurations or independent channels. |
| 8 | +IN2 | Non-inverting input of Amp 2 - matched to Pin 3; supports independent sensor conditioning per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 10 mV of both supply rails at light loads - maximizes dynamic range in 5 V or 3.3 V systems. |
| True single-supply input range | Operates with inputs down to −0.2 V on 5 V supply - enables direct interfacing to ground-referenced transducers. |
| Low input voltage noise | 13 nV/√Hz at 10 kHz - critical for low-level signal amplification in photodiode preamps without added filtering. |
| No phase inversion | Guaranteed stability with inputs driven near positive rail - prevents latch-up in high-common-mode applications. |
| High CMRR | 80 dB typical (VCM = 0–2 V) - rejects power supply ripple and EMI in noisy industrial environments. |
Applications
| Photodiode Preamp | Battery-Powered ECG Monitor |
|---|---|
|
Use Scenario: Amplifying weak current from reverse-biased silicon photodiode in optical smoke detector. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal input bias error. Use Value: 25 pA max input bias current prevents signal corruption; 350 pF capacitive drive stabilizes feedback network without compensation. |
Use Scenario: Front-end amplification of microvolt-level biopotential signals in portable ECG device powered by 3.7 V Li-ion. IC Role / Device Role / Timing Role: Instrumentation-grade buffer and gain stage operating from single 5 V rail derived from boost converter. Use Value: Rail-to-rail output delivers full 0–4.9 V range to 12-bit SAR ADC; 800 µA quiescent current extends battery life >72 hours. |
| 12-Bit Data Acquisition Channel | Active Low-Pass Filter for Sensor Signal Conditioning |
|
Use Scenario: Signal conditioning path before 12-bit successive-approximation ADC in industrial temperature transmitter. IC Role / Device Role / Timing Role: Precision gain stage and anti-aliasing filter driver with matched dual channels. Use Value: 1.0 mV max offset matching between channels reduces calibration burden; 1.8 MHz bandwidth supports 100 kSPS sampling. |
Use Scenario: 2nd-order Sallen-Key low-pass filter (10 kHz cutoff) cleaning accelerometer output in vibration monitor. IC Role / Device Role / Timing Role: Unity-gain buffer isolating filter from downstream load while maintaining phase linearity. Use Value: 3 V/µs slew rate prevents distortion on 10 kHz sine inputs; 350 pF direct drive eliminates external isolation resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ | Lower offset (25 µV typ), lower noise (8 nV/√Hz), but higher quiescent current (1.2 mA per amp) and no rail-to-rail output. | Better dc precision for strain gauge bridges; unsuitable where output must swing to 0 V in single-supply systems. | Select OP2177ARZ when ultra-low offset drift (0.6 µV/°C) outweighs rail-to-rail requirement and power budget allows. |
| TLV2462IDR | Lower cost, rail-to-rail I/O, but higher input bias (1 pA typ), lower bandwidth (6.4 MHz), and reduced CMRR (75 dB). | Acceptable for consumer-grade sensor interfaces; not recommended for medical or metrology due to bias current and matching limits. | Choose TLV2462IDR only for cost-sensitive, non-critical applications where 1 pA bias current does not degrade source impedance accuracy. |
Compared with AD822BRZ-REEL, OP2177ARZ trades rail-to-rail output and low power for superior dc precision, while TLV2462IDR sacrifices matching, CMRR, and bias current performance to reduce BOM cost - making AD822BRZ-REEL the balanced choice for battery-powered precision analog front-ends requiring true single-supply operation.
Availability
AD822BRZ-REEL is available at Aetrix Electronics and suitable for battery-powered medical instrumentation, photodiode-based optical sensing, and 12-bit to 14-bit data acquisition systems requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for AD822BRZ-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 Norwood, MA.
The AD822 belongs to Analog Devices' precision FET-input op amp product line, engineered for low-power, single-supply signal conditioning in instrumentation, medical, and sensor interface applications where input bias current and rail-to-rail operation are critical.
FAQ
What is the maximum capacitive load the AD822BRZ-REEL can drive stably at unity gain?
The AD822BRZ-REEL is specified to drive up to 350 pF of capacitive load in unity-gain follower configuration without oscillation or excessive ringing, as confirmed in the datasheet (Page 5, Table 1, "Capacitive Load Drive" row). This capability eliminates the need for series isolation resistors when interfacing to ADC input capacitance or long PCB traces, simplifying layout and preserving bandwidth.
Does the AD822BRZ-REEL support true single-supply operation with input signals below ground?
Yes - the AD822BRZ-REEL features a true single-supply input stage that accepts common-mode voltages down to −0.2 V relative to V– (ground) when operated on a 5 V supply (Page 5, Table 1, "Input Voltage Range"). This allows direct connection to ground-referenced sensors like thermocouples or photodiodes without level-shifting circuitry, preserving signal fidelity and reducing component count.
What is the guaranteed output current capability of the AD822BRZ-REEL over temperature?
The AD822BRZ-REEL guarantees minimum output current of 12 mA across the full industrial temperature range (−40°C to +85°C), as specified in Table 1 (Page 5, "Operating Output Current", TMIN to TMAX column). At 25°C, it delivers ≥15 mA - sufficient to drive 600 Ω loads or standard logic inputs without external buffers.
How does the AD822BRZ-REEL's input bias current compare to bipolar-input op amps?
The AD822BRZ-REEL uses JFET input transistors, delivering maximum input bias current of 25 pA at 25°C - over 1,000× lower than typical bipolar-input op amps (e.g., LM358: ~45 nA). This enables accurate amplification of high-impedance sources such as pH electrodes, piezoelectric sensors, and photodiodes without significant voltage error or signal attenuation.
Is the AD822BRZ-REEL pin-compatible with other dual op amps in SOIC-8 packages?
No - the AD822BRZ-REEL follows the industry-standard dual op amp pinout (OUT1, –IN1, +IN1, V–, V+, OUT2, –IN2, +IN2), matching devices like the OP2177ARZ and TLV2462IDR. However, electrical characteristics differ significantly; direct replacement requires validation of bandwidth, output drive, and input stage compatibility in the target circuit.
AD822BRZ-REEL 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:
- 1.9 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 1.24mA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD822BRZ-REEL FAQ
1.How can I place an order for AD822BRZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD822BRZ-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 AD822BRZ-REEL reliable?
The price and inventory of AD822BRZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD822BRZ-REEL is usually 5 days.
3.What payment methods are accepted for AD822BRZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD822BRZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD822BRZ-REEL?
AD822BRZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD822BRZ-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 AD822BRZ-REEL?
For technical support, including AD822BRZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD822BRZ-REEL requirements.
6.How does Aetrix verify that AD822BRZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD822BRZ-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 AD822BRZ-REEL meets industry standards.
7.What is the process for return or replacement of AD822BRZ-REEL?
All AD822BRZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD822BRZ-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 AD822BRZ-REEL part is unused and in its original packaging.
Return procedure for AD822BRZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD822BRZ-REEL Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
