Part A
AD8617ARMZ
ADI公司
- Lifecycle
- Active
- Stock
- 2547 件
- Package
- MSOP-8
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
Replacement verdict
Compatible functional replacement candidate
The AD8617ARMZ and AD8616ARM-R2 are both dual, low-noise, rail-to-rail CMOS operational amplifiers in the same 8-lead MSOP package, making the AD8617ARMZ a strong functional replacement candidate for the AD8616ARM-R2 in most designs. The primary differences are supply voltage range and quiescent current, so engineers should validate the supply rail and power budget before substituting.
Package Type
High match
Channel Count
High match
Supply Voltage Range
Validation required
Quiescent Current
Validation required
Parts at a glance
Part B
AD8616ARM-R2
ADI公司
- Lifecycle
- Active
- Stock
- 7364 件
- Package
- TSSOP-8
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
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 | AD8616ARM-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 2 (Dual) | Channel count must match the circuit's signal path requirements for direct substitution. |
| Supply Voltage Range | 1.8 V to 5.0 V | 2.7 V to 5.0 V | The AD8617 supports lower supply voltages, enabling operation in 1.8 V systems where the AD8616 cannot function. |
| Input Offset Voltage (Max) | ±65 µV | ±80 µV | Lower offset improves DC precision in sensor and instrumentation signal chains. |
| Gain Bandwidth Product | 1.9 MHz | 24 MHz | The AD8616 offers far higher bandwidth, critical for high-speed signal processing and fast settling applications. |
| Slew Rate | 0.9 V/µs | 12 V/µs | Higher slew rate supports faster large-signal response and wider dynamic performance. |
| Supply Current per Amplifier (Typ) | 38 µA | 1.5 mA | The AD8617 is a micropower part suited to battery-powered designs, while the AD8616 draws significantly more current. |
| Input Voltage Noise Density | 22 nV/√Hz | 8 nV/√Hz | Lower noise density benefits low-level signal amplification and improves SNR. |
| Package / Mounting | 8-Lead MSOP (Surface Mount) | 8-Lead MSOP (Surface Mount) | Matching package and footprint allows drop-in board replacement without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings ensure equivalent environmental robustness in industrial applications. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8617ARMZ | AD8616ARM-R2 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| 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 the AD8616ARM-R2?
The AD8617ARMZ is a dual, low-power, rail-to-rail input/output operational amplifier supplied in an 8-lead MSOP (RM) package and specified for the −40 °C to +125 °C temperature range. The AD8616ARM-R2 is a dual, high-speed (38 MHz gain-bandwidth), low-noise, rail-to-rail input/output operational amplifier in an 8-lead MSOP (RM) package, supplied on a 2,000-piece reel (R2). The AD8616 offers substantially higher bandwidth and slew rate, while the AD8617 is optimized for lower supply current and precision DC performance.
Are the AD8617ARMZ and AD8616ARM-R2 pin-compatible?
Yes. Both devices are dual operational amplifiers in the 8-lead MSOP (RM) package and use the standard dual op-amp pinout: 1 = OUT A, 2 = −IN A, 3 = +IN A, 4 = V−, 5 = +IN B, 6 = −IN B, 7 = OUT B, 8 = V+. This allows board-level interchangeability, but electrical differences must still be validated for the application.
How do the supply current and bandwidth of the two devices compare?
The AD8617 is a micropower dual amplifier with a typical supply current of approximately 38 µA per amplifier and a gain-bandwidth product of about 400 kHz. The AD8616 is a high-speed dual amplifier with a typical supply current of approximately 1.5 mA per amplifier and a gain-bandwidth product of 38 MHz. The AD8616 therefore delivers roughly two orders of magnitude more bandwidth at the cost of significantly higher quiescent current.
What are the supply voltage ranges for the AD8617ARMZ and AD8616ARM-R2?
Both devices operate from a single supply of 2.7 V to 5.5 V, or from dual supplies of ±1.35 V to ±2.75 V. They are rail-to-rail input and output amplifiers, making them suitable for low-voltage single-supply signal conditioning.
Which device is better suited for low-power battery-operated designs?
The AD8617ARMZ is the better choice for low-power battery-operated designs because its typical supply current is approximately 38 µA per amplifier, compared with approximately 1.5 mA per amplifier for the AD8616ARM-R2. The AD8617 also maintains precision DC specifications such as low offset voltage, making it suitable for portable instrumentation and sensor interfaces.
Which device should be selected for high-speed signal processing?
The AD8616ARM-R2 should be selected for high-speed signal processing. Its 38 MHz gain-bandwidth product and high slew rate support active filtering, buffering, and ADC driving at frequencies well beyond the capability of the AD8617, whose 400 kHz gain-bandwidth product limits it to low-frequency precision applications.
What does the R2 suffix on the AD8616ARM-R2 indicate?
The R2 suffix denotes the packaging quantity and form: the AD8616ARM-R2 is supplied in tape-and-reel format with 2,000 pieces per reel in the 8-lead MSOP (RM) package. The AD8617ARMZ is supplied in tube or standard bulk packaging; the Z suffix indicates a lead-free, RoHS-compliant package.
Can the AD8617ARMZ and AD8616ARM-R2 be used interchangeably in an existing design?
They are pin-compatible in the 8-lead MSOP package, but they are not electrically interchangeable without validation. The AD8616 provides much higher bandwidth and supply current, while the AD8617 provides much lower power consumption. Circuit stability, compensation, load driving, and power budget must be re-evaluated against the datasheet of the replacement device before substitution.