Part A
AD8617ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2547 Stückzahl
- Package
- MSOP-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8617ARMZ and AD8616ARMZ-R2 are both dual, low-noise, rail-to-rail CMOS operational amplifiers in the same 8-lead MSOP package, sharing identical pinout and supply voltage range. The AD8617ARMZ is a lower-power variant with reduced quiescent current and lower bandwidth, while the AD8616ARMZ-R2 offers higher gain bandwidth and faster slew rate. Both are functionally interchangeable in many dual op-amp sockets, but the AD8617ARMZ should be validated in applications requiring the higher AC performance of the AD8616ARMZ-R2.
Package Type
High match
Pin Configuration
High match
Gain Bandwidth Product
Validation required
Quiescent Current
Validation required
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 | AD8617ARMZ | AD8616ARMZ-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for dual-channel circuit designs. |
| Supply Voltage Range | 1.8 V to 5.0 V | 2.7 V to 5.0 V | The wider low-voltage range of the AD8617 allows operation down to 1.8 V, which the AD8616 cannot support. |
| Input Offset Voltage (Max) | ±60 µV | ±65 µV | Lower offset voltage improves DC precision in sensor and instrumentation signal chains. |
| Gain Bandwidth Product | 1.9 MHz | 24 MHz | The AD8616 offers much higher bandwidth, enabling faster signal processing and higher-frequency applications. |
| Slew Rate | 0.9 V/µs | 12 V/µs | Higher slew rate supports faster large-signal response and better performance in high-speed circuits. |
| Supply Current per Amplifier (Typ) | 38 µA | 1.5 mA | The AD8617 is far more power-efficient, making it suitable for battery-powered and low-power designs. |
| Input Bias Current (Typ) | 0.5 pA | 0.2 pA | Ultra-low bias current minimizes errors in high-impedance sensor and photodiode applications. |
| Input Voltage Noise Density | 22 nV/√Hz | 8 nV/√Hz | Lower noise density improves signal-to-noise ratio in precision low-level signal amplification. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Both support industrial temperature ranges, ensuring compatibility in harsh environments. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Identical package and pinout allow drop-in replacement on the same PCB footprint. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8617ARMZ | AD8616ARMZ-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | - | DigiTrim® |
| Part Status | Active | Obsolete |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.1V/µs | 12V/µs |
| Gain Bandwidth Product | 400 kHz | 24 MHz |
| Current - Input Bias | 0.2 pA | 0.2 pA |
| Voltage - Input Offset | 400 µV | 23 µV |
| Supply Current | 38µA | 1.7mA (x2 Channels) |
| Current - Output / Channel | 80 mA | 150 mA |
| Voltage - Supply Span(Min) | 1.8 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 are the key differences between the AD8617ARMZ and AD8616ARMZ-R2?
The AD8617ARMZ is a dual, low-power, rail-to-rail input/output operational amplifier specified for operation from 1.8 V to 5.0 V, with a typical supply current of 38 µA per amplifier and a typical gain bandwidth product of 400 kHz. The AD8616ARMZ-R2 is a dual, high-speed, precision, rail-to-rail input/output operational amplifier specified for operation from 2.7 V to 5.0 V, with a typical supply current of 1.5 mA per amplifier and a typical gain bandwidth product of 20 MHz. The AD8617ARMZ is optimized for low-power portable applications, while the AD8616ARMZ-R2 is optimized for higher-bandwidth precision signal conditioning.
Are the AD8617ARMZ and AD8616ARMZ-R2 pin-compatible?
Yes. Both devices are offered in the same 8-lead MSOP (RM) package and use the standard dual operational amplifier 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 common pinout allows the two parts to be used on the same PCB footprint, although electrical performance differences must be evaluated for the target design.
Can the AD8617ARMZ be used as a direct drop-in replacement for the AD8616ARMZ-R2?
Not unconditionally. Although both are dual rail-to-rail input/output op amps in the same 8-lead MSOP package, the AD8617ARMZ has a much lower gain bandwidth product (400 kHz typical versus 20 MHz typical) and a lower supply current (38 µA typical versus 1.5 mA typical per amplifier). A design that depends on the 20 MHz bandwidth, higher slew rate, or specified AC performance of the AD8616ARMZ-R2 would not meet its requirements with the AD8617ARMZ. Replacement is only appropriate after verifying that the reduced bandwidth and drive capability satisfy the application.
What are the supply voltage ranges for the AD8617ARMZ and AD8616ARMZ-R2?
The AD8617ARMZ is specified for operation from 1.8 V to 5.0 V. The AD8616ARMZ-R2 is specified for operation from 2.7 V to 5.0 V. Both are rail-to-rail input and output amplifiers, but the AD8617ARMZ supports lower supply voltages, making it suitable for single-cell battery-powered systems, while the AD8616ARMZ-R2 requires a minimum supply of 2.7 V.
How do the quiescent supply currents of the AD8617ARMZ and AD8616ARMZ-R2 compare?
The AD8617ARMZ has a typical supply current of 38 µA per amplifier, which is significantly lower than the AD8616ARMZ-R2, which has a typical supply current of 1.5 mA per amplifier. This difference of roughly two orders of magnitude makes the AD8617ARMZ preferable for battery-powered and energy-sensitive designs, while the AD8616ARMZ-R2 consumes more power to achieve its higher bandwidth and precision performance.
Which part is better suited for high-bandwidth signal conditioning?
The AD8616ARMZ-R2 is better suited for high-bandwidth signal conditioning. It provides a typical gain bandwidth product of 20 MHz and a typical slew rate of 12 V/µs, whereas the AD8617ARMZ provides a typical gain bandwidth product of 400 kHz and a typical slew rate of 0.1 V/µs. For applications such as active filters, fast sensor interfaces, or buffering high-frequency signals, the AD8616ARMZ-R2 offers substantially greater AC performance.
Which part is better suited for low-power portable applications?
The AD8617ARMZ is better suited for low-power portable applications. Its typical supply current of 38 µA per amplifier and its 1.8 V minimum supply voltage allow operation from low-voltage battery sources with minimal power drain. The AD8616ARMZ-R2, with a typical supply current of 1.5 mA per amplifier and a 2.7 V minimum supply, is intended for applications where higher bandwidth and precision justify the increased power consumption.
Do both the AD8617ARMZ and AD8616ARMZ-R2 operate with rail-to-rail input and output swing?
Yes. Both the AD8617ARMZ and the AD8616ARMZ-R2 are rail-to-rail input and output (RRIO) operational amplifiers, allowing input common-mode voltage and output voltage to swing close to both supply rails. This makes both devices suitable for single-supply signal chains where maximizing dynamic range near the supply rails is important, though the achievable bandwidth and output drive differ between the two parts.