Analog Devices Inc. AD8663ACPZ-REEL7

Overview

AD8663ACPZ-REEL7 from Analog Devices is a single-channel, rail-to-rail output, precision CMOS operational amplifier optimized for low-noise, low-input-bias-current signal conditioning in high-impedance sensor interfaces. It delivers 175 µV max offset voltage, 23 nV/√Hz voltage noise density, 300 fA typical input bias current, and operates from 5 V to 16 V supply rails - enabling use in photodiode amplification, pH/ORP meter front ends, and low-power ADC driver stages.

For engineers reviewing the AD8663ACPZ-REEL7 datasheet, AD8663ACPZ-REEL7 pinout, AD8663ACPZ-REEL7 application, or AD8663ACPZ-REEL7 equivalent, key selection criteria include its guaranteed 1.5 µV/°C offset drift over −40°C to +125°C, unity-gain stability with 20 pF load, and compatibility with single-supply systems requiring >14 V output swing at 1 mA load.

Technical Context

The AD8663ACPZ-REEL7 employs Analog Devices' DigiTrim® trimming to achieve precision DC performance without laser trimming, supporting stable operation across extended industrial temperature range (−40°C to +125°C). Its CMOS input stage enables ultra-low input bias current (0.3 pA typ), while rail-to-rail output swing ensures full dynamic range utilization into data converters.

Designed for single-supply (5 V–16 V) or dual-supply (±2.5 V–±8 V) operation, it features 540 kHz gain bandwidth product and 0.3 V/µs slew rate at 16 V, with phase margin ≥64° into 20 pF - making it suitable for transimpedance amplifiers and precision I-to-V conversion where low current noise (0.05 pA/√Hz) and minimal offset drift are critical.

Key Specifications

Pinout & Package

AD8663ACPZ-REEL7 is housed in an 8-lead LFCSP (CP-8-13) package measuring 3 mm × 3 mm × 0.75 mm, with exposed pad thermally connected to V− or left floating per datasheet Note 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA333AIDBVR and LTC6241CS5#TRMPBF, AD8663ACPZ-REEL7 uniquely balances ultra-low input bias current, 16 V rail capability, and compact LFCSP packaging - making it optimal for space-constrained, wide-supply industrial sensor front ends where electrometer-grade accuracy is required without sacrificing thermal performance.

Availability

AD8663ACPZ-REEL7 is available at Aetrix Electronics and suitable for photodiode amplification, pH/ORP meter design, and low-power ADC driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD8663ACPZ-REEL7 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.

The AD866x family was engineered specifically for precision, low-power, high-impedance sensor signal conditioning - targeting applications including analytical instrumentation, medical diagnostics, and industrial process control where JFET-like input performance is needed without associated cost or power penalties.

FAQ

What is the maximum supply voltage rating for AD8663ACPZ-REEL7?

The AD8663ACPZ-REEL7 has an absolute maximum supply voltage rating of 18 V, with recommended operating range from 5 V to 16 V single supply (or ±2.5 V to ±8 V dual supply). Operation beyond 16 V reduces long-term reliability and is not characterized per datasheet Table 3.

Does AD8663ACPZ-REEL7 require external compensation for unity-gain stability?

No, AD8663ACPZ-REEL7 is unity-gain stable and does not require external compensation. The datasheet confirms ≥60° phase margin with 20 pF capacitive load at both 5 V and 16 V supplies, enabling direct use in voltage follower and transimpedance configurations without added components.

How is the exposed pad on the AD8663ACPZ-REEL7 LFCSP package intended to be used?

The exposed pad on AD8663ACPZ-REEL7 (CP-8-13) should be connected to V− or left unconnected per datasheet Note 2. It is not electrically isolated and must not be tied to any other potential. Soldering it to V− improves thermal performance (θJA drops from 751°C/W to 181°C/W).

What is the guaranteed input offset voltage drift specification for AD8663ACPZ-REEL7?

AD8663ACPZ-REEL7 guarantees a maximum offset voltage drift of 5 µV/°C over the full −40°C to +125°C operating range, with typical performance at 1.5 µV/°C. This is specified in Table 1 and Table 2 under TCVOS and validated across temperature sweeps in Figure 6 and Figure 9.

Can AD8663ACPZ-REEL7 drive a 2 kΩ load rail-to-rail at 16 V supply?

Yes - at 16 V supply and 25°C, AD8663ACPZ-REEL7 delivers VOH ≥15.95 V and VOL ≤25 mV into 100 µA load (Table 2), and maintains rail-to-rail swing into 2 kΩ loads per Figure 16. At 1 mA, VOL rises to 100 mV and VOH falls to 15.85 V - still within 0.1 V of rails.