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Analog Devices Inc. LT1498HS8#PBF
- Part No.:
- LT1498HS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1498HS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,099
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Product details
Overview
LT1498HS8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input and output precision operational amplifier optimized for high-accuracy signal conditioning in single- and dual-supply systems. It delivers 10MHz gain-bandwidth, 6V/μs slew rate, 475μV max input offset voltage, 110dB PSRR, and stable operation driving capacitive loads up to 10,000pF - enabling use as a unity-gain buffer ahead of 12-bit ADCs in 3V battery-powered instrumentation.
For engineers reviewing the LT1498HS8#PBF datasheet, LT1498HS8#PBF pinout, LT1498HS8#PBF application, or LT1498HS8#PBF equivalent, key selection considerations include guaranteed rail-to-rail I/O performance across –40°C to 125°C, C-Load™ architecture for capacitive load stability, matched input stage trimming for superior CMRR, and SO-8 packaging with high-temperature qualification.
Technical Context
The LT1498HS8#PBF implements a patented dual-input-stage architecture with independent trimming at both supply rails, ensuring guaranteed common-mode rejection >86dB over full temperature range and <1LSB error when buffering 12-bit ADCs at 3V. Its C-Load™ compensation enables unconditional stability with capacitive loads up to 10,000pF without external compensation.
It operates from 2.2V single supply to ±15V dual supply, maintains 10MHz GBW and 6V/μs slew rate across supply and temperature, and features 1.7mA per amplifier supply current - balancing precision, speed, and power efficiency for industrial sensor interfaces and data acquisition front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 10MHz - supports closed-loop bandwidths up to ~1.5MHz in unity-gain stable configurations for anti-aliasing and active filtering. |
| Slew Rate | 6V/μs - enables clean 100kHz full-scale sine wave output at 10Vpp without distortion in single-supply 3V systems. |
| Input Offset Voltage | 475μV max - ensures ≤0.5% gain error in precision gain stages and <1LSB contribution to 12-bit ADC conversion at 3V full scale. |
| Supply Range | 2.2V to ±15V - supports direct interface with 3V microcontrollers, 5V logic, and ±15V analog signal chains without level-shifting. |
| Capacitive Load Drive | 10,000pF - eliminates need for isolation resistors when driving ADC inputs, multiplexer outputs, or long PCB traces. |
| PSRR | 110dB - rejects supply noise to maintain 16-bit-equivalent dynamic range in noisy embedded power environments. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive sensors, industrial PLC I/O modules, and downhole equipment. |
Pinout & Package
LT1498HS8#PBF is housed in an 8-lead plastic SO (S8) package with standard dual op amp pinout and JEDEC MS-012AC footprint. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of sourcing/sinking 30mA, swings within 20mV of rails at light load. |
| 2 | –IN A | Inverting input of Amplifier A - rail-to-rail common-mode range, low bias current (650nA max). |
| 3 | +IN A | Non-inverting input of Amplifier A - identical rail-to-rail range and bias specs as Pin 2. |
| 4 | V– | Negative supply rail - accepts ground (single supply) or negative voltage (dual supply); input common mode extends 100mV beyond this rail. |
| 5 | V+ | Positive supply rail - accepts 2.2V to 36V total supply; input common mode extends 100mV beyond this rail. |
| 6 | OUT B | Amplifier B output - electrically identical to Pin 1, fully independent channel. |
| 7 | –IN B | Inverting input of Amplifier B - matches Pin 2 in specs and layout symmetry. |
| 8 | +IN B | Non-inverting input of Amplifier B - matches Pin 3; enables differential or dual-channel configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Dual rail-to-rail I/O | Enables full dynamic range utilization in 3V systems - inputs accept V– to V+, outputs swing within 20mV of rails. |
| Patented input stage trimming | Guarantees CMRR >86dB over –40°C to 125°C by trimming both NPN and PNP input stages independently at supply rails. |
| C-Load™ compensation | Provides unconditional stability with capacitive loads up to 10,000pF - no external compensation required for ADC driver applications. |
| 12-bit ADC buffer guarantee | Specified to add <1LSB error in unity-gain configuration driving 12-bit SAR ADCs at 3V supply, even at temperature extremes. |
| High PSRR (110dB) | Maintains DC accuracy and AC SNR in systems with shared switching regulators or noisy digital supplies. |
Applications
| Industrial Sensor Signal Conditioning | Rail-to-Rail ADC Driver |
|---|---|
Use Scenario: Amplifying low-level mV-range outputs from RTDs, strain gauges, or thermocouples in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with gain of 100–1000, rejecting common-mode noise on long sensor cables. Use Value: 475μV max VOS and 110dB PSRR ensure <0.1% system gain error and immunity to 24VDC field supply ripple. | Use Scenario: Buffering the output of a precision voltage reference into the sampling capacitor of a 12-bit SAR ADC in portable medical devices. IC Role / Device Role / Timing Role: Unity-gain follower with low output impedance and fast settling to minimize acquisition time. Use Value: Guaranteed <1LSB error at 3V supply and –40°C to 125°C ensures clinical-grade measurement repeatability without calibration drift. |
| Active Filter for Data Acquisition | Battery-Powered Instrumentation |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter preceding a 100kSPS ADC in test equipment. IC Role / Device Role / Timing Role: Dual op amp configured as two cascaded 2nd-order Sallen-Key stages. Use Value: 10MHz GBW and 6V/μs slew rate support filter cutoff frequencies up to 100kHz with <0.1dB passband ripple. | Use Scenario: Signal conditioning front-end in handheld multimeters or portable gas analyzers powered by two AA cells (3V). IC Role / Device Role / Timing Role: Dual-channel amplifier for simultaneous voltage/current measurement paths. Use Value: 1.7mA per amplifier supply current extends battery life while rail-to-rail I/O maximizes usable ADC range from limited 3V headroom. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1498IS8#PBF | Same architecture and pinout, but rated for –40°C to 85°C only; lower cost; 750μV max VOS at 85°C vs 475μV for H-grade. | Suitable for commercial/industrial control panels not exposed to under-hood or high-ambient environments. | Select LT1498IS8#PBF if operating temperature stays below 85°C and cost sensitivity outweighs extended temp margin. |
| ADA4625-2ARZ | Higher 18MHz GBW and 12V/μs slew rate, but 500μV max VOS, 2.2mA supply current, and only specified to 105°C junction. | Better for wideband active filters or higher-speed data acquisition where speed > precision at extreme temperature. | Choose ADA4625-2ARZ when >10MHz closed-loop bandwidth is required and 125°C ambient is not mandatory. |
Compared with LT1498IS8#PBF, the LT1498HS8#PBF provides tighter offset voltage and guaranteed performance to 125°C - critical for automotive engine control or industrial motor drives. Versus ADA4625-2ARZ, it trades bandwidth for lower power, better PSRR, and broader temperature qualification - favoring precision over speed in harsh environments.
Availability
LT1498HS8#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, high-reliability data acquisition systems, and automotive subsystems requiring stable component supply across extended temperature ranges.
Supply support for LT1498HS8#PBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, formed through the acquisition of Linear Technology in 2017.
The LT1498HS8#PBF belongs to ADI's legacy Linear Technology precision op amp product line, engineered specifically for high-accuracy, rail-to-rail signal conditioning in demanding industrial, automotive, and instrumentation applications.
FAQ
What is the maximum capacitive load the LT1498HS8#PBF can drive without oscillation?
The LT1498HS8#PBF is specified to remain unconditionally stable driving capacitive loads up to 10,000pF, thanks to its integrated C-Load™ compensation architecture. This eliminates the need for external series isolation resistors when interfacing directly with ADC input capacitors, multiplexer outputs, or long PCB traces - a key advantage over standard op amps that require careful compensation above ~100pF.
Does the LT1498HS8#PBF support true rail-to-rail input and output operation at 3V supply?
Yes, the LT1498HS8#PBF supports full rail-to-rail input common-mode range (V– to V+) and rail-to-rail output swing (within 20mV of V– and V+ at light load) at 3V single supply. Its patented dual-input-stage design ensures consistent performance across the entire supply range, making it ideal for battery-powered 3V systems where maximizing dynamic range is essential.
How does the LT1498HS8#PBF achieve guaranteed <1LSB error when buffering 12-bit ADCs?
The LT1498HS8#PBF achieves guaranteed <1LSB error in unity-gain buffer configurations by combining 475μV max input offset voltage, 110dB PSRR, and rail-to-rail output swing - all validated across –40°C to 125°C. At 3V full-scale ADC range (732μV/LSB), the worst-case offset contributes <0.65LSB, and PSRR suppresses supply-induced errors to negligible levels, meeting the specification without calibration.
What is the thermal performance of the LT1498HS8#PBF in SO-8 package at 125°C ambient?
In the SO-8 (S8) package, the LT1498HS8#PBF has θJA = 130°C/W. At 125°C ambient and 3.4mA total supply current (1.7mA per amplifier × 2), power dissipation is ~10.2mW. This results in a junction temperature rise of ~1.3°C - well below the 150°C absolute maximum, confirming robust thermal margin for continuous operation in high-ambient industrial environments.
Is the LT1498HS8#PBF pin-compatible with standard dual op amp SO-8 footprints like LM358 or OP27?
No, the LT1498HS8#PBF uses the industry-standard dual op amp SO-8 pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B), which matches LM358, TL072, and many others. However, unlike LM358, it requires no design changes to leverage rail-to-rail I/O, 10MHz bandwidth, or 125°C operation - making it a functional upgrade path with identical PCB layout.
LT1498HS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- 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:
- 6V/µs
- Gain Bandwidth Product:
- 10.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1.8mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1498HS8#PBF FAQ
1.How can I place an order for LT1498HS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1498HS8#PBF 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 LT1498HS8#PBF reliable?
The price and inventory of LT1498HS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1498HS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1498HS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1498HS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1498HS8#PBF?
LT1498HS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1498HS8#PBF 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 LT1498HS8#PBF?
For technical support, including LT1498HS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1498HS8#PBF requirements.
6.How does Aetrix verify that LT1498HS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1498HS8#PBF 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 LT1498HS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1498HS8#PBF?
All LT1498HS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1498HS8#PBF, 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 LT1498HS8#PBF part is unused and in its original packaging.
Return procedure for LT1498HS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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