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Analog Devices Inc. ADA4098-2HRZ
- Part No.:
- ADA4098-2HRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4098-2HRZ.pdf
- Description:
- DUAL PRECISION, 1MHZ, 1V/US OTT
- Quantity:
- Payment:
- Shipping:
Inventory:107
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Product details
Overview
ADA4098-2HRZ from Analog Devices is a dual-channel, precision, Over-The-Top™ operational amplifier designed for high-voltage industrial sensing and monitoring. 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 and up to −VS + 70 V - enabling direct battery or bus voltage sensing in harsh environments.
For engineers reviewing the ADA4098-2HRZ datasheet, ADA4098-2HRZ pinout, ADA4098-2HRZ application, or ADA4098-2HRZ equivalent, this page provides verified technical context, validated pin functions, confirmed package mapping (SOIC_N-8), real-world application use cases, and two rigorously cross-checked alternative parts - all grounded in Analog Devices' Rev. B datasheet and official ordering guide.
Technical Context
The ADA4098-2HRZ implements an Over-The-Top™ input stage that maintains precision operation even when inputs exceed the negative supply by up to 70 V - critical for current-sense amplifiers monitoring high-side shunts. Its input stage tolerates ±80 V differential voltage without damage or dc accuracy degradation.
It features independent shutdown control per channel (SHDN1/SHDN2), unity-gain stability, and drives capacitive loads up to 200 pF while delivering 20 mA output current. 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 - supports single-supply industrial systems up to 48 V nominal bus voltage. |
| Gain Bandwidth Product | 1.05 MHz typical - enables stable closed-loop operation at gains ≥1 with bandwidth >1 MHz. |
| Input Offset Voltage | ±35 µV max (B grade) - ensures sub-100 µV error in precision sensor signal conditioning. |
| Common-Mode Input Range | −VS − 0.1 V to −VS + 70 V - allows direct sensing of battery terminals or power rails above ground. |
| Supply Current per Channel | 165 µA typical - enables low-power always-on monitoring in battery-backed systems. |
| Slew Rate | 0.85 V/µs typical (ΔVOUT = 25 V) - supports fast transient response in overvoltage detection circuits. |
| ESD Rating | ±3 kV HBM - robust enough for assembly and field deployment in unshielded industrial enclosures. |
Pinout & Package
ADA4098-2HRZ is packaged in an 8-lead standard small outline (SOIC_N) with exposed pad not connected internally; the package footprint matches JEDEC MS-012AA. Pin 1 is VOUT1, and pin 8 is +VS. All power and signal pins are arranged for minimal crosstalk between channels.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT1 | Output of Channel 1 - rail-to-rail capable, high-impedance in shutdown mode. |
| 2 | −IN1 | Inverting input of Channel 1 - part of Over-The-Top™ input stage tolerant to >70 V above −VS. |
| 3 | +IN1 | Noninverting input of Channel 1 - matched bias current path; used for reference or feedback in current sense. |
| 4 | −VS | Negative supply - must be bypassed with ≥0.1 µF capacitor to low-impedance ground plane. |
| 5 | +IN2 | Noninverting input of Channel 2 - electrically isolated from Channel 1; supports dual-sensor monitoring. |
| 6 | −IN2 | Inverting input of Channel 2 - identical Over-The-Top™ tolerance as −IN1; no phase reversal on overdrive. |
| 7 | VOUT2 | Output of Channel 2 - independently controllable; shares same drive capability as VOUT1. |
| 8 | +VS | Positive supply - accepts up to +50 V dc; requires local 0.1 µF bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Stage | Enables sensing at voltages up to 70 V above −VS without external level-shifting or protection circuitry. |
| Independent Per-Channel Shutdown | SHDN1 and SHDN2 pins allow selective power-down of either amplifier to reduce system-level quiescent current. |
| Robust Input Protection | Tolerates ±80 V differential input and −10 V to +80 V absolute input voltage - eliminates need for external clamps. |
| Low 1/f Noise Corner | 6 Hz typical - preserves signal integrity in DC-coupled sensor interfaces like strain gauges or thermopiles. |
| High Common-Mode Rejection | 120 dB minimum across −0.1 V to +70 V - rejects noise from shared power rails in multi-channel monitoring. |
Applications
| Industrial Sensor Conditioning | Battery & Power Supply Monitoring |
|---|---|
Use Scenario: Amplifying low-level signals from RTDs, thermocouples, or bridge sensors in factory-floor PLC modules operating from 24 V DC rails. IC Role / Device Role / Timing Role: Precision front-end amplifier with Over-The-Top™ inputs referenced to system ground while sensing signals referenced to higher potentials. Use Value: Eliminates isolation or level-shift stages; maintains ±35 µV offset accuracy despite 70 V common-mode swing. |
Use Scenario: Monitoring battery pack voltage and cell balancing currents in energy storage systems with 48 V nominal bus. IC Role / Device Role / Timing Role: Dual-channel current/voltage monitor where one channel measures shunt voltage and the other senses bus voltage. Use Value: Single SOIC-8 replaces two discrete op amps; 165 µA/channel enables long-term state-of-charge logging. |
| 4–20 mA Transmitter Front-End | Front-End Amplifier in Abusive Environments |
Use Scenario: Converting sensor outputs to standardized 4–20 mA loop signals in hazardous-area transmitters exposed to ESD and voltage transients. IC Role / Device Role / Timing Role: Input-stage amplifier driving voltage-to-current converter; handles wide common-mode range from loop power supply. Use Value: ±3 kV HBM rating and ±80 V differential tolerance prevent field failures during installation or lightning-induced surges. |
Use Scenario: Signal conditioning in oil & gas downhole tools or railway traction inverters subject to extreme temperature cycling and supply rail instability. IC Role / Device Role / Timing Role: High-voltage, high-temperature analog front-end with guaranteed operation from −55°C to +150°C (H grade). Use Value: Maintains 126 dB open-loop gain and 120 dB CMRR across full temperature range - no calibration drift compensation needed. |
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 |
|---|---|---|---|
| ADA4077-2ARZ | Lower supply voltage limit (±15 V max), no Over-The-Top™ input - common-mode limited to rails. | Not suitable for >30 V common-mode sensing; requires external level shifters for battery monitoring. | Choose only if operating below ±15 V and cost sensitivity outweighs input range requirements. |
| LT6015IMS8#PBF | Wider common-mode range (−VS − 0.3 V to +VS + 76 V), but higher supply current (370 µA/channel) and lower GBP (1.3 MHz). | Acceptable for high-CMRR abuse-tolerant designs where power budget allows >2× current draw. | Prefer when extended common-mode margin beyond 70 V is required and thermal headroom permits higher dissipation. |
Compared with ADA4098-2HRZ, ADA4077-2ARZ lacks Over-The-Top™ capability and cannot replace it in battery-monitoring or high-side current-sense roles, while LT6015IMS8#PBF trades 2× quiescent current for marginal common-mode extension - making ADA4098-2HRZ optimal for 48 V industrial systems needing precision, low power, and proven 70 V over-the-rail operation.
Availability
ADA4098-2HRZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, battery monitoring, and 4–20 mA transmitter design requiring stable component supply across extended temperature and voltage ranges.
Supply support for ADA4098-2HRZ 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 since 1965.
The ADA4098-2HRZ belongs to Analog Devices' Over-The-Top™ precision op amp product line, engineered specifically for industrial monitoring applications where inputs routinely exceed supply rails - such as high-side current sensing, battery management, and ruggedized sensor interfaces.
FAQ
What is the maximum continuous supply voltage for ADA4098-2HRZ?
The ADA4098-2HRZ supports a maximum continuous supply voltage of +50 V, as specified in the Absolute Maximum Ratings table. Transient overshoot up to +60 V is tolerated briefly, but dc operation must remain ≤+50 V to avoid time-dependent dielectric breakdown of internal oxides. This rating applies to both single- and split-supply configurations, and is validated across the full −55°C to +150°C operating temperature range for the H-grade version.
Does ADA4098-2HRZ support true rail-to-rail input and output operation?
Yes, ADA4098-2HRZ supports rail-to-rail input operation across its full common-mode range (−VS − 0.1 V to −VS + 70 V) and rail-to-rail output swing within 15 mV of each rail under no-load conditions. Output swing degrades predictably with load: at 10 mA source/sink current, high-side swing is within 1.1 V of +VS and low-side swing is within 450 mV of −VS. This behavior is fully characterized in Tables 1 and 2 of the Rev. B datasheet.
What is the function of the SHDN1 and SHDN2 pins on ADA4098-2HRZ?
SHDN1 and SHDN2 are independent shutdown control inputs for Channel 1 and Channel 2, respectively. When pulled >−VS + 1.5 V, each channel enters low-power shutdown (≤20 µA total supply current per channel), and its output transitions to high impedance. When tied to −VS or left floating (with recommended 1 nF cap to −VS), the channel remains active. Logic thresholds are supply-independent and fully specified from −55°C to +150°C.
Can ADA4098-2HRZ be used in over-the-top current sensing applications?
Yes - ADA4098-2HRZ is explicitly designed for over-the-top current sensing. Figure 1 in the datasheet shows a 1 V/A high-side shunt amplifier configuration using ADA4098-1; the ADA4098-2HRZ replicates this capability per channel. Its input stage tolerates up to 70 V above −VS while maintaining ±35 µV offset and 120 dB CMRR, enabling accurate measurement of current in 48 V battery systems without level-shifting circuitry.
What package type is ADA4098-2HRZ supplied in, and is it RoHS compliant?
ADA4098-2HRZ is supplied in an 8-lead standard small outline integrated circuit (SOIC_N) package, per JEDEC MS-012AA outline. It is RoHS compliant and lead-free, with NiPdAu lead finish. Thermal resistance θJA is 120°C/W on a 4-layer JEDEC board, and the exposed pad is not internally connected - no grounding or soldering of the EPAD is required for standard operation.
ADA4098-2HRZ 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:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4098-2HRZ FAQ
1.How can I place an order for ADA4098-2HRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4098-2HRZ 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 ADA4098-2HRZ reliable?
The price and inventory of ADA4098-2HRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4098-2HRZ is usually 5 days.
3.What payment methods are accepted for ADA4098-2HRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4098-2HRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4098-2HRZ?
ADA4098-2HRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4098-2HRZ 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 ADA4098-2HRZ?
For technical support, including ADA4098-2HRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4098-2HRZ requirements.
6.How does Aetrix verify that ADA4098-2HRZ is sourced from the original manufacturer or authorized distributors?
All ADA4098-2HRZ 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 ADA4098-2HRZ meets industry standards.
7.What is the process for return or replacement of ADA4098-2HRZ?
All ADA4098-2HRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4098-2HRZ, 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 ADA4098-2HRZ part is unused and in its original packaging.
Return procedure for ADA4098-2HRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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