Part A
AD8616ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3647 Stückzahl
- Package
- MSOP-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8616ARMZ and AD8616ARMZ-R2 are functionally equivalent, sharing identical core specifications including dual-channel CMOS op-amp architecture, MSOP-8 package, and 20 MHz gain bandwidth. The -R2 suffix denotes a tape-and-reel packaging variant rather than a different silicon device, making these parts interchangeable for design and production purposes. Procurement decisions should focus on packaging format and inventory availability rather than electrical performance differences.
Amplifier Architecture
High match
Package Type
High match
Electrical Specifications
High match
Packaging Format
High match
Parts at a glance
Part B
AD8616ARMZ-R2
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3613 Stückzahl
- Package
- TSSOP-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8616ARMZ | AD8616ARMZ-R2 | Why it matters |
|---|---|---|---|
| Amplifier Type | CMOS, Precision, Rail-to-Rail I/O | CMOS, Precision, Rail-to-Rail I/O | Confirms both parts are the same amplifier core, so functional behavior is identical. |
| Number of Channels | 2 | 2 | Channel count must match for circuit topology and pinout compatibility. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines whether the part can operate in the target system's power rail. |
| Gain Bandwidth Product | 24 MHz | 24 MHz | Sets the achievable signal bandwidth and closed-loop performance. |
| Input Offset Voltage (Max) | 65 µV | 65 µV | Low offset is critical for precision DC signal accuracy. |
| Input Bias Current | 0.2 pA (typ) | 0.2 pA (typ) | Very low bias current suits high-impedance sensor and photodiode interfaces. |
| Package / Mounting | 8-Lead MSOP, Surface Mount | 8-Lead MSOP, Surface Mount | Same package ensures drop-in PCB footprint compatibility. |
| Packaging / Ordering Format | Tube | Tape & Reel (R2 suffix) | Only the shipping/packaging format differs; electrical performance is unchanged, but assembly line handling differs. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms both parts meet the same environmental operating requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8616ARMZ | AD8616ARMZ-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Obsolete |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 12V/µs | 12V/µs |
| Gain Bandwidth Product | 24 MHz | 24 MHz |
| Current - Input Bias | 0.2 pA | 0.2 pA |
| Voltage - Input Offset | 23 µV | 23 µV |
| Supply Current | 1.7mA (x2 Channels) | 1.7mA (x2 Channels) |
| Current - Output / Channel | 150 mA | 150 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5 V | 5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD8616ARMZ and AD8616ARMZ-R2?
Both parts are the same AD8616 dual precision operational amplifier in an 8-lead MSOP (RM) package. The suffix difference refers to packaging format: AD8616ARMZ is the standard tube/rail packaging orderable part number, while AD8616ARMZ-R2 denotes a tape-and-reel packaging variant (R2 = 250-unit reel). The electrical die and package are identical; only the shipping/packaging quantity and format differ.
Are AD8616ARMZ and AD8616ARMZ-R2 electrically and functionally identical?
Yes. Both orderable part numbers correspond to the same AD8616 silicon in the same 8-lead MSOP package. Datasheet parameters such as supply voltage range (2.7 V to 5 V), low offset voltage, rail-to-rail input/output, and bandwidth apply equally to both. The only documented difference is the packaging/reel configuration reflected in the orderable part number suffix.
Can AD8616ARMZ-R2 be used as a drop-in replacement for AD8616ARMZ?
Yes, from an electrical and footprint standpoint they are interchangeable because they share the same die and 8-lead MSOP package. The substitution only affects the assembly/procurement process (reel vs. tube). Designers should confirm the reel quantity and any board-level handling requirements, but no electrical or layout change is required.
What package do AD8616ARMZ and AD8616ARMZ-R2 use?
Both are supplied in the 8-lead MSOP (Mini Small Outline Package), indicated by the "RM" code in the part number. The "Z" suffix denotes RoHS-compliant, lead-free construction per Analog Devices ordering conventions. Package outline, pinout, and land pattern are identical for both orderable part numbers.
What are the key specifications of the AD8616 that apply to both variants?
The AD8616 is a dual, precision, rail-to-rail input/output operational amplifier. Verified datasheet parameters include a supply voltage range of 2.7 V to 5 V, low input offset voltage, low input bias current, high open-loop gain, and rail-to-rail input and output swing. These specifications are identical for AD8616ARMZ and AD8616ARMZ-R2 because they are the same device.
Why would a design choose the -R2 tape-and-reel variant over the standard tube packaging?
The -R2 suffix indicates tape-and-reel packaging, which is typically selected for automated surface-mount assembly lines. Tape-and-reel supports pick-and-place equipment and consistent feeder operation. The standard AD8616ARMZ (tube/rail) is often used for prototyping, low-volume builds, or manual assembly. The choice is a manufacturing/logistics decision, not an electrical one.
Do AD8616ARMZ and AD8616ARMZ-R2 differ in RoHS/lead-free status or temperature range?
No. Both carry the "Z" designation indicating RoHS-compliant, lead-free construction, and both are specified over the same operating temperature range as defined in the AD8616 datasheet. Packaging format (tube vs. reel) does not affect compliance status or temperature specifications.