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Analog Devices Inc. ADA4098-2BRZ
- Part No.:
- ADA4098-2BRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4098-2BRZ.pdf
- Description:
- DUAL PRECISION, 1MHZ, 1V/US OTT
- Quantity:
- Payment:
- Shipping:
Inventory:229
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Product details
Overview
ADA4098-2BRZ from Analog Devices is a dual-channel, precision, Over-The-Top™ operational amplifier designed for high-voltage industrial signal conditioning. It operates from 3 V to 50 V supply, delivers 1.05 MHz gain bandwidth, draws only 165 µA per channel, and supports rail-to-rail input/output with common-mode range extending to −VS − 0.1 V up to −VS + 70 V - enabling direct sensing in abusive, high-side current monitoring applications.
For engineers reviewing the ADA4098-2BRZ datasheet, ADA4098-2BRZ pinout, ADA4098-2BRZ application, or ADA4098-2BRZ equivalent, this page provides verified specifications, SOIC_N package mapping, dual-channel shutdown control behavior, Over-The-Top™ input tolerance validation, and real-world use cases in battery monitoring, 4–20 mA transmitters, and front-end amplifiers exposed to voltage transients.
Technical Context
The ADA4098-2BRZ implements a robust Over-The-Top™ input stage that maintains precision operation even when inputs exceed the negative supply by up to 70 V - independent of positive supply voltage. Its input stage tolerates ±80 V differential input and features ±3 kV HBM ESD protection.
It integrates two independent amplifiers, each with dedicated shutdown control (SHDN1/SHDN2), unity-gain stability, and ability to drive 20 mA loads or 200 pF capacitive loads. The device achieves 126 dB large-signal voltage gain and 120 dB CMRR across its full −0.1 V to +70 V common-mode range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 50 V DC - supports single-supply industrial systems and high-voltage split supplies up to ±25 V. |
| Gain Bandwidth Product | 1.05 MHz typical - enables stable closed-loop operation at gains ≥1 with predictable phase margin (55°). |
| Input Offset Voltage | ±35 µV max (B grade) - ensures sub-100 µV error in precision sensor interfaces without trimming. |
| Input Offset Drift | ±0.5 µV/°C max (B grade) - maintains accuracy over −40°C to +125°C operating range. |
| Supply Current per Channel | 165 µA typical - enables low-power operation in always-on monitoring circuits. |
| Common-Mode Input Range | −VS − 0.1 V to −VS + 70 V - allows direct high-side current sensing above ground or battery voltage. |
| Slew Rate | 0.85 V/µs typical (ΔVOUT = 25 V) - supports fast transient response in supply monitoring and fault detection. |
| CMRR | 120 dB minimum (VCM = −0.1 V to +70 V) - rejects supply noise and ground bounce in noisy industrial environments. |
Pinout & Package
The ADA4098-2BRZ is packaged in an 8-lead standard small outline integrated circuit (SOIC_N), with exposed pad not present in this variant. Pin 1 is VOUT1; pin 8 is +VS. The package is RoHS-compliant, lead-free, and rated for operation from −40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT1 | Output of Channel 1 - rail-to-rail capable, drives up to 20 mA, enters high-impedance state during shutdown. |
| 2 | −IN1 | Inverting input of Channel 1 - part of Over-The-Top™ input stage; withstands >70 V above −VS without phase reversal. |
| 3 | +IN1 | Noninverting input of Channel 1 - matched bias current path; enables precision differential or single-ended configurations. |
| 4 | −VS | Negative power supply - reference for all inputs/outputs; must be bypassed with ≥0.1 µF capacitor near pin. |
| 5 | +IN2 | Noninverting input of Channel 2 - electrically isolated from Channel 1; supports independent dual-sensing paths. |
| 6 | −IN2 | Inverting input of Channel 2 - identical Over-The-Top™ tolerance as Channel 1; no crosstalk-induced offset shift. |
| 7 | VOUT2 | Output of Channel 2 - independently controllable; same drive strength and output swing as VOUT1. |
| 8 | +VS | Positive power supply - supplies both channels; requires local 0.1 µF bypass to −VS for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Stage | Enables sensing at voltages up to 70 V above −VS - eliminates need for level-shifting or isolation in high-side current monitors. |
| Dual Independent Shutdown | SHDN1/SHDN2 pins allow per-channel power gating - reduces system-level quiescent current without disabling entire signal chain. |
| Robust Input Protection | Withstands ±80 V differential input and ±3 kV HBM - survives accidental shorts, load dumps, and ESD events in field-deployed equipment. |
| Rail-to-Rail Input/Output | Maximizes dynamic range across full supply - preserves signal fidelity in low-voltage microcontroller interfaces and wide-range sensors. |
| Low 1/f Noise Corner | 6 Hz typical - minimizes drift and low-frequency error in precision DC measurements like strain gauge or thermocouple amplification. |
| High PSRR & CMRR | 123 dB PSRR and 120 dB CMRR maintained across full common-mode range - rejects switching noise and ground loop interference. |
Applications
| Industrial Sensor Conditioning | Supply Current Sensing |
|---|---|
|
Use Scenario: Amplifying low-level outputs from RTDs, thermocouples, or bridge sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision front-end amplifier with Over-The-Top™ input - accepts sensor signals referenced to high-voltage rails without attenuation or level shift. Use Value: Eliminates external op-amp bias networks and improves measurement resolution by preserving full input common-mode range and minimizing offset drift. |
Use Scenario: Monitoring battery pack or DC bus current via shunt resistor in energy storage systems. IC Role / Device Role / Timing Role: High-side current sense amplifier - measures voltage drop across shunt while operating with input common-mode up to 70 V above ground. Use Value: Enables accurate, isolated current measurement without optocouplers or magnetic sensors - reducing BOM cost and board area. |
| Battery and Power Supply Monitoring | 4 mA to 20 mA Transmitters |
|
Use Scenario: Real-time voltage and current supervision in telecom rectifiers and UPS systems operating at 24–48 V nominal. IC Role / Device Role / Timing Role: Dual-channel monitor - one channel for supply voltage scaling, second for current sensing, both sharing same supply and layout. Use Value: Reduces component count versus discrete solutions while maintaining ±35 µV offset accuracy across temperature and supply variations. |
Use Scenario: Converting process sensor outputs (e.g., pressure, temperature) into standardized 4–20 mA loop signals for industrial control systems. IC Role / Device Role / Timing Role: Output driver and current regulation amplifier - provides precise, stable loop current with low thermal drift. Use Value: Meets IEC 61000-4-5 surge immunity requirements due to ±80 V differential input tolerance and robust ESD protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, high-voltage op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4099-2ARZ | Higher slew rate (2.5 V/µs), wider GBW (10 MHz), but higher supply current (1.2 mA/channel) and narrower common-mode range (−VS to +VS + 5 V). | Targeted at higher-speed control loops; unsuitable for Over-The-Top™ sensing beyond +VS + 5 V. | Select ADA4099-2ARZ only when bandwidth >1 MHz is required and input overvoltage tolerance ≤5 V above +VS is acceptable. |
| LT6015IMS8#PBF | Similar Over-The-Top™ range (−VS to −VS + 76 V), lower offset (±20 µV), but no shutdown function and higher supply current (220 µA/channel). | Lacks per-channel shutdown; less suitable for power-gated multi-channel systems requiring selective wake-up. | Choose LT6015IMS8#PBF when ultra-low offset dominates design priority and shutdown capability is unnecessary. |
Compared with ADA4099-2ARZ and LT6015IMS8#PBF, the ADA4098-2BRZ uniquely balances ultra-wide Over-The-Top™ input range, low quiescent current, dual independent shutdown, and precision DC performance - making it optimal for space-constrained, low-power industrial monitors where input overvoltage resilience is non-negotiable.
Availability
ADA4098-2BRZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, battery and power supply monitoring, and 4 mA to 20 mA transmitter designs requiring stable component supply across extended temperature and voltage ranges.
Supply support for ADA4098-2BRZ 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 healthcare markets.
The ADA4098-2BRZ belongs to Analog Devices' Over-The-Top™ precision op amp family, engineered specifically for ruggedized signal acquisition in harsh industrial environments where input overvoltage, wide supply range, and long-term DC stability are critical.
FAQ
What is the maximum common-mode input voltage for ADA4098-2BRZ?
The ADA4098-2BRZ supports a guaranteed common-mode input range from −VS − 0.1 V to −VS + 70 V. This Over-The-Top™ capability allows the inputs to operate up to 70 V above the negative supply rail - essential for high-side current sensing and battery monitoring applications. The specification is validated across temperature and supply conditions per the datasheet's CMRR test methodology.
Does ADA4098-2BRZ have shutdown functionality, and how is it controlled?
Yes, the ADA4098-2BRZ includes independent shutdown control for each channel via SHDN1 (Pin 5) and SHDN2 (Pin 6). Driving either pin to −VS + 1.5 V or higher places that channel into shutdown, reducing supply current to ≤20 µA and placing the output in high-impedance state. The ADA4098-2BRZ datasheet specifies logic thresholds, response times (≤30 µs wake-up), and pull-down current limits for reliable system-level power management.
Can ADA4098-2BRZ drive capacitive loads, and what is the limit?
Yes, the ADA4098-2BRZ is characterized to drive capacitive loads up to 200 pF while maintaining stability and specified phase margin (≥55°). This capability supports direct interfacing with ADC input filters, long PCB traces, or cable-driven outputs without external isolation resistors - confirmed in the "Output" section of the ADA4098-2BRZ datasheet under "Capacitive Load Drive."
What package type is used for ADA4098-2BRZ, and is it RoHS-compliant?
The ADA4098-2BRZ is supplied in an 8-lead standard small outline integrated circuit (SOIC_N) package, designated as "R-8" in Analog Devices' ordering guide. It is RoHS-compliant, lead-free, and qualified for operation from −40°C to +125°C ambient temperature. Thermal resistance (θJA) is 120°C/W on a JEDEC 4-layer board, per datasheet Table 4.
How does ADA4098-2BRZ handle input overvoltage and ESD stress?
The ADA4098-2BRZ withstands ±80 V differential input voltage and features ±3 kV HBM / ±1.25 kV FICDM ESD protection on all pins. Its Over-The-Top™ input architecture prevents phase reversal or parametric degradation under sustained overvoltage - validated in abusive environment applications like front-end amplifiers in motor drives and power converters. These ratings are explicitly tested and guaranteed per datasheet Tables 3 and 5.
ADA4098-2BRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.85V/µs
- Gain Bandwidth Product:
- 1.05 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 350 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 165µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 50 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4098-2BRZ FAQ
1.How can I place an order for ADA4098-2BRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4098-2BRZ 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 ADA4098-2BRZ reliable?
The price and inventory of ADA4098-2BRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4098-2BRZ is usually 5 days.
3.What payment methods are accepted for ADA4098-2BRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4098-2BRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4098-2BRZ?
ADA4098-2BRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4098-2BRZ 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 ADA4098-2BRZ?
For technical support, including ADA4098-2BRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4098-2BRZ requirements.
6.How does Aetrix verify that ADA4098-2BRZ is sourced from the original manufacturer or authorized distributors?
All ADA4098-2BRZ 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 ADA4098-2BRZ meets industry standards.
7.What is the process for return or replacement of ADA4098-2BRZ?
All ADA4098-2BRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4098-2BRZ, 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 ADA4098-2BRZ part is unused and in its original packaging.
Return procedure for ADA4098-2BRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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