OPA4364AID vs OPA4322AIPWR vs OPA4180IPWR: Which Quad Op-Amp Should You Choose?

Engineers looking for a quad CMOS op-amp from Texas Instruments routinely shortlist three parts that look similar at first glance — the OPA4364, OPA4322, and OPA4180 — but specify themselves into very different design corners. The OPA4364AID targets battery-powered, low-bandwidth sensor front-ends. The OPA4322AIPWR pushes into higher bandwidth and lower noise at the cost of supply current. The OPA4180IPWR is a zero-drift precision part for high-resolution DC measurement. This article compares the three side-by-side, calls out the use cases where each clearly wins, and addresses supply-and-cost considerations that often decide the choice in production.

Quick Comparison Table

Specification	OPA4364AID	OPA4322AIPWR	OPA4180IPWR
Topology	CMOS, RRIO	CMOS, RRIO, shutdown	Zero-drift, RRIO
Supply range	1.8 V to 5.5 V	1.8 V to 5.5 V	4 V to 36 V
Gain-bandwidth product	7 MHz	20 MHz	2 MHz
Slew rate	2.5 V/µs	10 V/µs	1.4 V/µs
Quiescent current	230 µA / channel	1.5 mA / channel	235 µA / channel
Input bias current (typ)	10 fA	10 pA	50 pA
Input offset voltage (max)	±2.5 mV	±2 mV	±25 µV
Offset drift (typ)	4 µV/°C	5 µV/°C	0.1 µV/°C
Voltage noise @ 1 kHz	39 nV/√Hz	8.5 nV/√Hz	18 nV/√Hz
CMRR (typ)	90 dB	100 dB	130 dB
Operating temperature	−40 to +125 °C	−40 to +125 °C	−40 to +125 °C
Package	SOIC-14	TSSOP-14	SOIC-14 / TSSOP-14
Volume price (1k qty)	~$1.40	~$1.85	~$2.20

Numbers are taken from each device's TI datasheet at the typical supply listed; see the individual product pages for the full electrical characteristics table.

Detailed Analysis

Performance Envelope

The three parts are positioned at three different points on the bandwidth-vs-precision-vs-power triangle. The OPA4364AID lives at the low-power, moderate-bandwidth corner: 7 MHz GBW is more than enough for any sensor signal below 70 kHz at gains up to 100, and the 230 µA per-channel quiescent current is a meaningful win when you multiply by four channels and a battery budget. The OPA4322AIPWR adds 13 MHz of bandwidth and drops the input voltage noise from 39 nV/√Hz to 8.5 nV/√Hz, which translates to a 4.6× improvement in noise floor at any given gain. That bandwidth and noise advantage costs you 6.5× the quiescent current per channel — the OPA4322AIPWR burns 6 mA total in a quad configuration versus 920 µA for the OPA4364AID.

The OPA4180IPWR plays a different game entirely. Its 0.1 µV/°C offset drift and ±25 µV maximum offset are roughly 100× tighter than either of the other two parts. This precision lives on a 4 V to 36 V supply, which makes it incompatible with the 1.8 V single-cell sensor designs the OPA4364AID is meant for, but ideal for industrial 24 V bus designs where the absolute accuracy of a strain gauge bridge or thermocouple measurement matters more than supply current.

Ecosystem and Development Tools

All three parts are mainstream TI catalog ICs with full PSpice / TINA-TI simulation models, IBIS models, footprint libraries in Altium / KiCad / Eagle, and detailed application notes covering filter design and ADC interfacing. TI's TINA-TI simulator includes encrypted models for all three. The development effort to swap between them is small — usually a footprint change between SOIC-14 and TSSOP-14, plus revisiting the gain network if you're moving to or from the OPA4322AIPWR's higher bandwidth.

For evaluation, TI offers BOOSTXL- and EVM-style breakout boards for the OPA4364 and OPA4180 families. The OPA4322AIPWR is typically evaluated on a generic quad-op-amp eval board because its bandwidth is more application-specific.

Power Efficiency

For a four-channel always-on signal chain, total continuous quiescent current scales linearly with channel count: 920 µA for the OPA4364AID, 6 mA for the OPA4322AIPWR, 940 µA for the OPA4180IPWR. On a CR2032 (≈230 mAh usable), the OPA4364AID-based front-end has a 250-hour theoretical continuous run time before the cell is dead — roughly 10 days. The OPA4322AIPWR-based design lasts 38 hours under the same load. With duty-cycling (1 % active), both stretch to multi-month or multi-year run times, but the relative gap holds.

The OPA4180IPWR is in the same class as the OPA4364AID for total quiescent current, but its 4 V minimum supply rules out single-cell battery operation. In practice, the OPA4180IPWR is usually paired with a 5 V or 24 V industrial rail, where 940 µA is a non-issue compared with the rest of the system's draw.

Supply Chain and Availability

All three parts are catalog items at Mouser, DigiKey, Arrow, and Future. Common stock positions through 2026 have been (roughly, by anecdotal channel checks):

• OPA4364AID — high stock, multiple distributors carry 5k+ on hand. Lead time 12–14 weeks for direct factory orders.
• OPA4322AIPWR — moderate stock, factory lead time 16–18 weeks. Often paired with strain-bridge applications, so demand spikes during industrial automation cycles.
• OPA4180IPWR — moderate stock, factory lead time 14–16 weeks. The newer zero-drift positioning means qualified second-source parts are limited.

For automotive-grade designs, OPA4364AQDRQ1 and OPA4322AQPWRQ1 are AEC-Q100 qualified versions of the OPA4364 and OPA4322 with extended temperature characterization and Q-grade documentation. Those automotive variants typically run a 30 % to 50 % price premium over the industrial parts, depending on volume.

If your design needs alternate sourcing across these three TI families, FindMyChip aggregates 200+ verified distributor stock positions and can usually quote three or more sources with 24-hour turnaround. Request a quote with your preferred MPN, package, and volume.

Cost Analysis

At 1k quantities, distributor pricing typically falls in this range:

• OPA4364AID — $1.30–$1.50
• OPA4322AIPWR — $1.70–$2.00
• OPA4180IPWR — $2.10–$2.40
• For reference, the bipolar quad op-amp LMV324IPWR — same SOIC-14 package, no rail-to-rail input — sells for ~$0.10 in 1k volume.

The price gap between the LMV324 and the OPA4xxx family is the cost of the CMOS-input topology (low bias current, low input capacitance) and the wider supply / RRIO behavior. If you don't need either property, the LMV324 is one of the cheapest quad op-amps on the market and remains a defensible choice for cost-sensitive designs.

Use Case Recommendations

Choose the OPA4364AID when:

• Your supply is 1.8 V to 5.5 V single rail (Li-ion, coin cell, regulated 3.3 V).
• Your signal bandwidth is below 100 kHz (most sensor signal chains).
• Source impedance is high enough to require CMOS-class bias current (>100 kΩ).
• Battery life and per-channel quiescent current are part of the product spec.
• You want the cheapest quad CMOS RRIO op-amp from TI's catalog.

Choose the OPA4322AIPWR when:

• Your signal bandwidth approaches or exceeds 1 MHz.
• You need a noise floor below 1 µV RMS in a 1 kHz bandwidth.
• Supply current is not the dominant constraint (line-powered, energy-harvested supercap, or duty-cycled where peak current is acceptable).
• You want a shutdown pin to gate per-channel power without an external load switch.

Choose the OPA4180IPWR when:

• Your signal chain feeds a 16-bit-or-higher ADC.
• Post-calibration drift over the operating temperature range is the dominant error.
• Supply rail is 4 V or higher (typical industrial 5 V or 24 V).
• Absolute DC accuracy matters more than bandwidth or input bias current.
• You can accept the price premium and slightly higher bias current (50 pA vs 10 fA).

Step down from any of these when:

• Cost is the only constraint, source impedance is below 100 kΩ, and your supply is 2.7 V or above. The LMV324IPWR at $0.10 in volume is the right answer for non-precision sensing.

FAQ

Q: Can I drop-in replace OPA4322AIPWR with OPA4364AID without redesigning the gain network? Footprint-wise yes — both come in TSSOP-14 (OPA4364AIPWT and OPA4322AIPWR are pin-compatible). Electrically, you must reconsider any closed-loop gain above 50 V/V because the OPA4364AID's 7 MHz GBW means the closed-loop bandwidth will drop by 2.85× compared to the 20 MHz OPA4322AIPWR. Re-simulate the AC response before swapping.

Q: Is OPA4180IPWR overkill for a 12-bit ADC chain? Usually yes. At 12 bits and ~1 V full-scale, the LSB is 244 µV, and a typical OPA4364AID's ±2.5 mV maximum offset can be calibrated to ±50 µV in production. The OPA4180IPWR's ±25 µV is uncalibrated, but the calibration step typically erases the difference for 12-bit chains. Move to OPA4180IPWR when your error budget at 16 bits or above can't be met by post-cal of a non-zero-drift part.

Q: What's the practical difference between OPA4364AID and OPA4364AIDR? Same silicon, same package — different reel sizes. The "D" suffix is tube packaging (50 units per tube), the "DR" suffix is tape-and-reel (2500 per reel). Pick "DR" for any volume above pilot — assembly houses charge a tube-handling premium.

Conclusion

For most battery-powered or low-bandwidth sensor signal chains, the OPA4364AID is the right starting point at ~$1.40 / 1k. Step up to OPA4322AIPWR only when 20 MHz of bandwidth or 8.5 nV/√Hz of noise is genuinely required, and to OPA4180IPWR only when 0.1 µV/°C drift dominates the error budget. For all three, request a quote or search the catalog on FindMyChip to compare 200+ verified distributors with 24-hour turnaround on volumes from 100 to 100k.