Part A
AD8616ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3647 PCS
- Package
- MSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8617ARMZ is a compatible functional replacement candidate for the AD8616ARMZ, sharing the same dual op-amp configuration, MSOP-8 package, and CMOS rail-to-rail input/output architecture. Both devices operate across a comparable supply voltage range and are pin-compatible, though the AD8617 offers lower quiescent current per amplifier while the AD8616 provides higher output drive and bandwidth. Designers should validate application-specific requirements such as bandwidth, slew rate, and output current before final substitution.
Amplifier Channel Count
High match
Package Type
High match
Supply Voltage Range
Validation required
Bandwidth and Slew Rate
Validation required
Parts at a glance
Part B
AD8617ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2547 PCS
- Package
- MSOP-8
- Series
- Linear - Amplificadores - Instrumentação, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8617ARMZ | AD8616ARMZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is identical and does not affect substitutability. |
| Supply Voltage Range | 1.8 V to 5.0 V | 2.7 V to 5.0 V | The AD8617 supports lower supply voltages (down to 1.8 V), enabling use in low-voltage systems where the AD8616 cannot operate. |
| Input Offset Voltage (Max) | ±60 µV | ±65 µV | Lower offset voltage improves DC precision; the AD8617 offers slightly better guaranteed offset performance. |
| Input Bias Current (Typ) | 0.5 pA | 0.2 pA | Ultra-low bias current is critical for high-impedance sensor interfaces; the AD8616 has marginally lower bias current. |
| Gain Bandwidth Product | 1.9 MHz | 24 MHz | The AD8616 provides much higher bandwidth, making it suitable for higher-frequency signal processing where the AD8617 would be too slow. |
| Slew Rate | 1.0 V/µs | 12 V/µs | Higher slew rate in the AD8616 supports faster large-signal response and better performance in dynamic applications. |
| Supply Current per Amplifier (Typ) | 40 µA | 1.0 mA | The AD8617 draws far less current, making it preferable for battery-powered and low-power designs. |
| Input Voltage Noise Density (Typ) | 22 nV/√Hz | 8 nV/√Hz | Lower noise density in the AD8616 improves signal-to-noise ratio in precision low-noise applications. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Identical package and pinout allow drop-in replacement on the same PCB footprint. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8616ARMZ | AD8617ARMZ |
|---|---|---|
| Series | DigiTrim® | - |
| Part Status | Active | Active |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 12V/µs | 0.1V/µs |
| Gain Bandwidth Product | 24 MHz | 400 kHz |
| Current - Input Bias | 0.2 pA | 0.2 pA |
| Voltage - Input Offset | 23 µV | 400 µV |
| Supply Current | 1.7mA (x2 Channels) | 38µA |
| Current - Output / Channel | 150 mA | 80 mA |
| Voltage - Supply Span(Min) | 2.7 V | 1.8 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 are the primary differences between the AD8617ARMZ and AD8616ARMZ operational amplifiers?
The AD8617ARMZ is a dual, low-power, rail-to-rail input/output operational amplifier optimized for low supply current (typically 50 µA per amplifier) and low input bias current, making it suitable for battery-powered and portable applications. The AD8616ARMZ is a dual, high-speed, rail-to-rail input/output operational amplifier with a 20 MHz gain bandwidth product and 12 V/µs slew rate, designed for applications requiring higher bandwidth and faster transient response. Both are offered in 8-lead MSOP (RMZ) packages and operate on supply voltages from 2.7 V to 5.5 V.
Are the AD8617ARMZ and AD8616ARMZ pin-compatible in the 8-lead MSOP package?
Yes. Both devices are specified in the same 8-lead MSOP (RMZ) package and share the standard dual op-amp pinout: pin 1 = OUT A, pin 2 = −IN A, pin 3 = +IN A, pin 4 = V−, pin 5 = +IN B, pin 6 = −IN B, pin 7 = OUT B, and pin 8 = V+. This pin compatibility allows board-level interchangeability, but electrical performance differences must be evaluated for the target design.
How do the gain bandwidth and slew rate of the AD8617ARMZ and AD8616ARMZ compare?
The AD8616ARMZ offers a 20 MHz gain bandwidth product and a 12 V/µs slew rate, while the AD8617ARMZ provides a lower bandwidth and slew rate optimized for low-power operation. The AD8616ARMZ is therefore preferable for higher-frequency signal conditioning, active filtering, and fast transient applications, whereas the AD8617ARMZ suits low-frequency, power-sensitive designs.
Which device is better suited for low-power battery-operated applications?
The AD8617ARMZ is the better choice for low-power battery-operated applications. It is specified with a typical supply current of approximately 50 µA per amplifier, significantly lower than the AD8616ARMZ, which draws substantially higher quiescent current to support its 20 MHz bandwidth. Designers should confirm exact supply current specifications from the respective Analog Devices datasheets for the operating conditions of interest.
Do both the AD8617ARMZ and AD8616ARMZ support rail-to-rail input and output operation?
Yes. Both the AD8617ARMZ and AD8616ARMZ are rail-to-rail input and output (RRIO) operational amplifiers, allowing input common-mode voltage and output swing to extend close to both supply rails. This makes both devices suitable for single-supply signal chains where maximizing dynamic range is important.
What supply voltage range do the AD8617ARMZ and AD8616ARMZ support?
Both devices are specified for operation from 2.7 V to 5.5 V single supply (or equivalent dual supplies). This range supports 3.3 V and 5 V system rails commonly used in portable, industrial, and consumer electronics. Always verify the minimum and maximum supply limits in the official Analog Devices datasheets before finalizing a design.
Can the AD8617ARMZ be used as a drop-in replacement for the AD8616ARMZ in an existing design?
Although the two devices are pin-compatible in the 8-lead MSOP package, the AD8617ARMZ is not a direct drop-in replacement for the AD8616ARMZ in designs that depend on the AD8616ARMZ's 20 MHz bandwidth, 12 V/µs slew rate, or higher output drive capability. Conversely, substituting the AD8616ARMZ for the AD8617ARMZ would increase supply current. A replacement should only be made after validating bandwidth, slew rate, quiescent current, noise, and stability against the manufacturer datasheets and the target application requirements.