Analog Devices Inc. LT1498CN8#PBF

Overview

LT1498CN8#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 LT1498CN8#PBF datasheet, LT1498CN8#PBF pinout, LT1498CN8#PBF application, or LT1498CN8#PBF equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use cases in low-voltage signal conditioning, and validated alternative options for precision op amp selection.

Technical Context

The LT1498CN8#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™ design ensures stability with heavy capacitive loads without external compensation.

It delivers precision performance under wide supply conditions (2.2V single-ended to ±15V dual), maintains 110dB PSRR, and guarantees rail-to-rail output swing within 20mV of rails at 0.5mA load-critical for maximizing dynamic range in 3V ADC front-ends.

Key Specifications

Pinout & Package

LT1498CN8#PBF is housed in an 8-lead plastic DIP (N8) package with through-hole mounting and 0°C to 70°C operating temperature range.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision rail-to-rail op amp applications.

Compared with AD8602ARZ and OPA2333AIDR, the LT1498CN8#PBF uniquely balances 10MHz bandwidth, 6V/μs slew rate, robust 10,000pF capacitive load drive, and guaranteed <1LSB error at 3V-making it optimal for high-fidelity, single-supply ADC interface designs where speed, stability, and precision must coexist.

Availability

LT1498CN8#PBF is available at Aetrix Electronics and suitable for precision ADC buffering, active filtering, rail-to-rail instrumentation, and battery-powered signal conditioning requiring stable component supply across industrial, medical, and test equipment programs.

Supply support for LT1498CN8#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 series belongs to Linear's C-Load™ precision op amp family, designed specifically for high-accuracy, rail-to-rail signal conditioning in space-constrained, single-supply systems interfacing with ADCs, DACs, and sensors.

FAQ

What is the maximum capacitive load the LT1498CN8#PBF can drive without instability?

The LT1498CN8#PBF is specified to remain stable driving capacitive loads up to 10,000pF, a key feature enabled by its C-Load™ architecture. This eliminates the need for external series resistors when buffering ADC sample-and-hold inputs or driving long traces, and is verified across all supply voltages and temperatures in the LT1498CN8#PBF datasheet.

Does the LT1498CN8#PBF support true rail-to-rail input operation down to the negative supply rail?

Yes, the LT1498CN8#PBF supports rail-to-rail input common-mode voltage from V– to V+, including operation with the input at V– (0V in single-supply mode). Its patented dual-input-stage design-trimmed separately at V– and V+-ensures consistent bias current, low offset, and high CMRR across the full range, unlike conventional RRO op amps that degrade near the rails.

What is the guaranteed input offset voltage specification for LT1498CN8#PBF at 3V supply?

At 3V single-supply operation and 25°C, the LT1498CN8#PBF guarantees a maximum input offset voltage of 475μV (VCM = V+ and VCM = V–). Over the full 0°C to 70°C commercial temperature range, the max remains 650μV-sufficient to contribute less than 1LSB error in 12-bit systems with 3V full-scale range.

Can the LT1498CN8#PBF be used with ±15V supplies?

Yes, the LT1498CN8#PBF is fully specified for ±15V dual-supply operation, with guaranteed performance including 10MHz GBW, 6V/μs slew rate, and 93dB CMRR. Its absolute maximum total supply voltage is 36V, and it maintains 110dB PSRR across ±5V to ±15V, making it suitable for legacy industrial control and test equipment.

Is LT1498CN8#PBF pin-compatible with standard dual op amp packages like NE5532 or LM358?

No, the LT1498CN8#PBF uses the industry-standard 8-pin DIP pinout for dual op amps (Pin 1: +IN A, Pin 2: –IN A, Pin 3: OUT A, Pin 4: V–, Pin 5: V+, Pin 6: OUT B, Pin 7: –IN B, Pin 8: +IN B), which differs from both NE5532 (Pin 1: OUT A, Pin 2: –IN A, Pin 3: +IN A, Pin 4: V–, Pin 5: +IN B, Pin 6: –IN B, Pin 7: OUT B, Pin 8: V+) and LM358 (Pin 1: OUT A, Pin 2: –IN A, Pin 3: +IN A, Pin 4: V–, Pin 5: +IN B, Pin 6: –IN B, Pin 7: OUT B, Pin 8: V+). Direct replacement requires PCB layout revision.