Is there a pin-compatible replacement for LF353DR?

While several dual op-amps exist in the same SOIC-8 package, a true pin-to-pin replacement depends on the application. AD8667ARZ-REEL7 shares the package and has a low input bias current, but its performance in speed-sensitive circuits is much lower than the LF353DR.

What risks should I check before replacing LF353DR?

Key risks include mismatched bandwidth (GBP), slew rate, and supply voltage range. Also, verify the input stage type (JFET vs. CMOS vs. Bipolar) as this critically affects input bias current, which is crucial for high-impedance circuits.

LF353DR Alternatives, Datasheet & Cross Reference | Texas Instruments

LF353DR is a wide-bandwidth dual JFET-input operational amplifier from Texas Instruments, known for its high speed and low input bias current. Finding a suitable replacement requires careful matching of its electrical characteristics and package.

AI replacement insight

Electrical riskhigh

Significant mismatch in bandwidth, slew rate, and supply voltage.

Package risklow

Package is a standard SOIC-8, pinout is likely compatible but needs verification.

Can it be replaced directly?

No direct drop-in replacement has been identified that matches all key parameters. The closest candidate, AD8667ARZ-REEL7, is a performance downgrade in speed.

Best replacement path

Consider AD8667ARZ-REEL7 for low-frequency applications due to its matching package and low input bias current, but be aware of its reduced speed.

Main risk

The main risk is performance degradation, specifically lower bandwidth and slew rate, which can cause signal distortion or instability in circuits designed for the LF353DR's speed.

Recommended alternatives

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Alternative comparison matrix

Feature / factor	LF353DR	AD8667ARZ-REEL7	Compatibility / risk
Package	SOIC-8	SOIC-8	SOIC-8 — Package matches.
Number Of Channels	2	2	2 — Channel count matches.
Input Bias Current	50 pA	45 pA	45 pA — CMOS input provides comparable low input bias current to target's JFET.
Gain Bandwidth Product	3 MHz	540 kHz	540 kHz — Significantly lower bandwidth. Not suitable for high-frequency applications.
Slew Rate	13 V/µs	0.26 V/us	0.26 V/us — Significantly lower slew rate. Will distort fast-changing signals.
Supply Voltage	up to 36V	5 V to 16 V	5 V to 16 V — Narrower supply range than target's typical +/-18V (36V).
Temperature	0°C to 70°C	-40 C to +125 C	-40 C to +125 C — Wider operating temperature range.

Application & sourcing insights

Questions & answers

AD8667ARZ-REEL7 is a potential alternative in the same package with a similar low input bias current, but it has significantly lower bandwidth and slew rate. It may be suitable for DC or low-frequency applications, but requires careful review.