AD8616ARMZ vs AD8610ARM-R2

The AD8616ARMZ is a dual, precision, low-noise, CMOS operational amplifier specified for operation from 2.7 V to 5 V, supplied in an 8-lead MSOP (RM) package. The AD8610ARM-R2 is a single, precision, low-noise, JFET-input operational amplifier specified for operation from ±5 V to ±13 V (10 V to 26 V total supply), also supplied in an 8-lead MSOP (RM) package and provided on a 2,000-piece reel. The primary differences are channel count (dual vs. single), input stage technology (CMOS vs. JFET), and supply voltage range (single-supply low voltage vs. dual-supply higher voltage).

No. Although both devices use the same 8-lead MSOP (RM) package outline, their pin functions differ because one is a dual op amp and the other is a single op amp. The AD8616ARMZ uses the standard dual pinout (OUT A, -IN A, +IN A, V-, +IN B, -IN B, OUT B, V+), while the AD8610ARM-R2 uses the single op amp pinout with offset null and no connect pins. A direct drop-in substitution on the same PCB land pattern is therefore not possible without verifying pin functions against the respective datasheets.

No, they are not interchangeable. The AD8616ARMZ is a dual CMOS amplifier intended for low-voltage single-supply systems (2.7 V to 5 V), whereas the AD8610ARM-R2 is a single JFET-input amplifier intended for higher-voltage dual-supply systems (±5 V to ±13 V). Channel count, pinout, input bias current characteristics, and supply requirements all differ, so substitution requires a full design review against the manufacturer datasheets.

The AD8616ARMZ operates from a single supply of 2.7 V to 5 V. The AD8610ARM-R2 operates from dual supplies of ±5 V to ±13 V (10 V to 26 V total). The supply ranges do not overlap in a way that permits the same rail configuration for both parts, which is a key consideration when comparing them for a given design.

The AD8616ARMZ uses a CMOS input stage, which provides very low input bias current suitable for high-impedance sensor interfaces. The AD8610ARM-R2 uses a JFET input stage, which also offers low input bias current but with different temperature and common-mode behavior than CMOS. Designers should consult the respective manufacturer datasheets for the specified input bias current limits over temperature before selecting between the two.

Both devices are offered in the 8-lead MSOP package, identified by the RM suffix. The AD8616ARMZ suffix "Z" denotes RoHS-compliant lead-free construction. The AD8610ARM-R2 suffix "R2" denotes tape-and-reel packaging in 2,000-piece quantities. Buyers should confirm RoHS status and reel quantity from the manufacturer or an authorized distributor before ordering.

The AD8616ARMZ is the appropriate choice for low-voltage single-supply portable designs because it is specified for 2.7 V to 5 V operation and provides two amplifiers per package. The AD8610ARM-R2 requires higher dual supplies (±5 V to ±13 V) and provides only one amplifier, making it less suitable for low-voltage single-supply portable applications.

Verified parameters, including supply range, input bias current, package dimensions, pin configurations, and ordering information, should be obtained from the official Analog Devices datasheets for each part or from authorized distributors such as DigiKey, Mouser, TTI, or Future Electronics. Design decisions should be based on the latest manufacturer documentation rather than on summary comparisons alone.