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Analog Devices Inc. LT1498IN8#PBF
- Part No.:
- LT1498IN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1498IN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,952
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Product details
Overview
LT1498IN8#PBF from Analog Devices (formerly Linear Technology) is a dual rail-to-rail input and output precision operational amplifier optimized for single-supply 12-bit ADC buffering, featuring 10MHz gain-bandwidth, 6V/µs slew rate, 475µV max input offset voltage, and guaranteed <1LSB error at 3V supply. It operates from 2.2V to ±15V and drives capacitive loads up to 10,000pF.
For engineers reviewing the LT1498IN8#PBF datasheet, LT1498IN8#PBF pinout, LT1498IN8#PBF application, or LT1498IN8#PBF equivalent, this page delivers verified specifications, temperature-rated performance (–40°C to +85°C), dual-amplifier package mapping, and real-world design context for precision signal conditioning in low-voltage systems.
Technical Context
The LT1498IN8#PBF employs a patented dual-input-stage trimming architecture-separately calibrated at V– and V+-to achieve superior common-mode rejection (>90dB) across full rail-to-rail input range. Its C-Load™ compensation enables stability with heavy capacitive loads without external compensation.
It delivers precision performance over wide supply ranges (2.2V single-ended to ±15V dual), maintains rail-to-rail output swing (within 20mV of rails at 0.5mA), and features 110dB PSRR-critical for noise-sensitive analog front-ends in mixed-signal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 10MHz - supports stable closed-loop operation up to ~1MHz at unity gain in high-precision filters and buffers. |
| Slew Rate | 6V/µs - enables clean 100kHz full-scale sine wave output at 10Vpp without distortion in ADC driver applications. |
| Input Offset Voltage | 475µV max - ensures <1LSB error when driving 12-bit ADCs with 3V full-scale reference. |
| Supply Range | 2.2V to ±15V - allows direct use in battery-powered (3V), industrial (±15V), and automotive (5V) signal chains. |
| Capacitive Load Drive | Up to 10,000pF - eliminates need for isolation resistors when driving ADC inputs or long PCB traces. |
| Common-Mode Rejection | 93dB min - rejects supply and ground noise in single-supply sensor interfaces with high accuracy. |
| PSRR | 110dB - maintains DC precision despite ripple on shared power rails in dense PCB layouts. |
Pinout & Package
LT1498IN8#PBF is housed in an 8-lead plastic DIP (N8) package, suitable for through-hole prototyping and legacy industrial designs. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail swing supports full dynamic range into ADC or active filter. |
| 2 | –IN A | Inverting input of Amp A - matched bias current (≤650nA) minimizes offset in transimpedance configurations. |
| 3 | +IN A | Non-inverting input of Amp A - rail-to-rail CMVR (V– to V+) enables direct sensor interface without level-shifting. |
| 4 | V– | Negative supply - accepts ground (0V) in single-supply mode or negative rail in dual-supply systems. |
| 5 | V+ | Positive supply - supports 2.2V to 18V total supply range; decoupling required near pin for stability. |
| 6 | OUT B | Amplifier B output - independent channel enables dual-path signal conditioning or differential drive. |
| 7 | –IN B | Inverting input of Amp B - channel-to-channel VOS match ≤750µV supports precision instrumentation topologies. |
| 8 | +IN B | Non-inverting input of Amp B - identical CMVR and noise specs as Pin 3 for matched dual-channel performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3V ADC reference range without headroom loss or external level-shifting circuitry. |
| Dual-input-stage trimming | Guarantees >90dB CMRR across entire input range-superior to standard rail-to-rail op amps in noisy environments. |
| C-Load™ compensation | Stable operation with 10,000pF load eliminates need for series resistor + capacitor compensation networks. |
| 110dB PSRR | Maintains DC accuracy even with 100mVpp supply ripple-critical for precision data acquisition in shared-power systems. |
| –40°C to +85°C operation | Qualified for industrial temperature range; specified performance includes VOS, GBW, and SR across full range. |
Applications
| ADC Driver for 12-bit Systems | Single-Supply Active Filter |
|---|---|
Use Scenario: Buffering high-impedance sensors (e.g., thermocouples, strain gauges) into 12-bit SAR ADCs operating from 3V supplies. IC Role / Device Role / Timing Role: Precision unity-gain buffer with rail-to-rail I/O and <1LSB added error guarantee. Use Value: Eliminates calibration overhead by ensuring offset and drift remain within 1LSB (1.22mV at 3V/4096) across temperature. | Use Scenario: 4th-order Butterworth anti-aliasing filter preceding ADC in portable medical or test equipment. IC Role / Device Role / Timing Role: Dual op amp implementing two 2nd-order stages with matched GBW and phase margin. Use Value: 10MHz GBW and 6V/µs slew rate preserve filter group delay and step response fidelity up to 100kHz. |
| Rail-to-Rail Sensor Interface | Battery-Powered Signal Chain |
Use Scenario: Direct connection of 0–5V-output industrial sensors to microcontroller ADCs with 0–3.3V input range. IC Role / Device Role / Timing Role: Level-shifting buffer with input CMVR extending beyond rails and output swing to within 20mV of V+ and V–. Use Value: No external biasing or clamping needed-reduces BOM count and layout area while preserving SNR. | Use Scenario: Low-power analog front-end in handheld meters or IoT edge nodes powered by 2×AA batteries (2.2–3.2V). IC Role / Device Role / Timing Role: Dual-channel signal conditioner consuming only 2.0mA total supply current at 3V. Use Value: Enables >100-hour battery life while maintaining 12-bit linearity and 100kHz bandwidth. |
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 die, 8-lead SOIC package (S8); θJA = 130°C/W vs N8's 130°C/W; identical electrical specs. | Surface-mount assembly; smaller footprint; no through-hole mounting required. | Select for automated PCB assembly or space-constrained designs where DIP is impractical. |
| OP2177ARZ-REEL | Lower GBW (1.3MHz), lower slew rate (0.7V/µs), but lower VOS (25µV typ); higher PSRR (130dB); SOIC-8. | Better DC precision, worse AC performance; not suitable for >100kHz ADC buffering or active filters. | Select only for ultra-low-offset DC-coupled applications where bandwidth is secondary. |
Compared with LT1498IS8#PBF, LT1498IN8#PBF offers identical performance in a through-hole package for prototyping and legacy systems; compared with OP2177ARZ-REEL, it trades DC precision for 8× higher bandwidth and 9× faster slew rate-making it uniquely suited for time-critical 12-bit data acquisition.
Availability
LT1498IN8#PBF is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and test equipment requiring stable component supply with guaranteed –40°C to +85°C operation and long-term traceability.
Supply support for LT1498IN8#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio with rigorous qualification and long-term product support.
The LT1498/LT1499 family was designed specifically for high-fidelity signal conditioning in rail-to-rail, single-supply systems-targeting 12-bit+ data acquisition, sensor interfacing, and active filtering where traditional op amps fail due to input/output headroom or capacitive load instability.
FAQ
What is the maximum capacitive load the LT1498IN8#PBF can drive without oscillation?
The LT1498IN8#PBF is explicitly characterized and guaranteed stable with capacitive loads up to 10,000pF, thanks to its integrated C-Load™ compensation. This eliminates the need for external series resistors or feedback network adjustments when driving ADC inputs, cables, or long PCB traces-unlike most general-purpose op amps that require decompensation above 100pF.
Does the LT1498IN8#PBF meet the 1LSB error guarantee for 12-bit ADCs at 3V supply?
Yes-the LT1498IN8#PBF is guaranteed to add less than 1LSB of error when used as a unity-gain buffer driving a 12-bit ADC with a 3V full-scale reference. This is achieved via its 475µV max input offset voltage, low drift (≤2.5µV/°C), and rail-to-rail output swing within 20mV of both rails at 0.5mA load-ensuring full dynamic range utilization without calibration.
How does the dual-input-stage trimming in the LT1498IN8#PBF improve common-mode rejection?
The LT1498IN8#PBF uses separate trimming of its PNP and NPN input stages-one calibrated at V– and the other at V+-to minimize input stage mismatch across the full common-mode range. This yields guaranteed CMRR >90dB (vs typical rail-to-rail op amps at 70–80dB), critical for rejecting supply noise and ground bounce in single-supply sensor interfaces where CMVR extends to the rails.
What is the supply current per amplifier for the LT1498IN8#PBF at 3V operation?
At 3V single-supply operation and TA = 25°C, the LT1498IN8#PBF draws 1.7mA per amplifier (3.4mA total). Over the full –40°C to +85°C industrial temperature range, supply current remains tightly bounded between 2.0mA and 2.7mA total-enabling predictable power budgeting in battery-powered and thermally constrained systems.
Can the LT1498IN8#PBF operate from ±2.5V supplies?
Yes-the LT1498IN8#PBF supports total supply voltages from 2.2V (single-ended) up to 36V (dual ±18V). At ±2.5V (5V total), it maintains full rail-to-rail input/output operation, 10MHz GBW, and 6V/µs slew rate. Electrical characteristics are fully specified down to ±2.5V, including PSRR >100dB and CMRR >86dB, making it suitable for low-voltage bipolar signal chains.
LT1498IN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1498IN8#PBF FAQ
1.How can I place an order for LT1498IN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1498IN8#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 LT1498IN8#PBF reliable?
The price and inventory of LT1498IN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1498IN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1498IN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1498IN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1498IN8#PBF?
LT1498IN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1498IN8#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 LT1498IN8#PBF?
For technical support, including LT1498IN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1498IN8#PBF requirements.
6.How does Aetrix verify that LT1498IN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1498IN8#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 LT1498IN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1498IN8#PBF?
All LT1498IN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1498IN8#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 LT1498IN8#PBF part is unused and in its original packaging.
Return procedure for LT1498IN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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