Part A
ADA4805-2ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1854 Stückzahl
- Package
- MSOP-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The ADA4895-2ARMZ-RL is a viable functional replacement candidate for the ADA4805-2ARMZ in many designs, as both are dual low-power, low-noise, rail-to-rail output op amps in the same 8-lead MSOP package. However, the ADA4895-2 offers substantially higher bandwidth and slew rate at the cost of higher supply current, so the substitution should be validated against the application's power budget and dynamic performance requirements before adoption.
Package Type
High match
Channel Count
High match
Supply Current
Validation required
Bandwidth and Slew Rate
Validation required
Parts at a glance
Part B
ADA4895-2ARMZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9381 Stückzahl
- Package
- MSOP-10
- 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 | ADA4805-2ARMZ | ADA4895-2ARMZ-RL | Why it matters |
|---|---|---|---|
| -3 dB Bandwidth | 105 MHz | 236 MHz | Determines the maximum signal frequency the amplifier can handle with acceptable gain; the ADA4895-2 offers over twice the bandwidth for high-speed signal chains. |
| Slew Rate | 160 V/µs | 943 V/µs | Sets how fast the output can respond to large signal steps; higher slew rate supports faster large-signal settling and higher full-power bandwidth. |
| Input Voltage Noise Density | 5.1 nV/√Hz | 1 nV/√Hz | Lower input noise improves SNR in low-level signal applications; the ADA4895-2 is significantly quieter, benefiting precision and low-noise designs. |
| Supply Current per Amplifier | 500 µA | 3 mA | Directly affects power budget; the ADA4805-2 is a low-power option while the ADA4895-2 trades higher current for speed and noise performance. |
| Input Offset Voltage (Max) | 125 µV | 300 µV | Offset voltage contributes to DC error; a lower maximum offset (ADA4805-2) is preferable for precision DC-coupled applications. |
| Gain Bandwidth Product | 105 MHz | 236 MHz | Indicates closed-loop bandwidth scaling with gain; the higher GBP of the ADA4895-2 supports wider bandwidth at higher gains. |
| Supply Voltage Range | 3 V to 10 V | 3 V to 10 V | Defines compatible system rails; both parts share the same range, allowing similar supply design and interchangeability in that respect. |
| Output Current (Typical) | 30 mA | 60 mA | Determines drive capability for loads; the ADA4895-2 can source/sink more current, useful for driving heavier loads or cables. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Footprint compatibility enables drop-in replacement on the same PCB; identical packaging simplifies substitution. |
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 | ADA4805-2ARMZ | ADA4895-2ARMZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 250V/µs | 943V/µs |
| Gain Bandwidth Product | - | 1.5 GHz |
| -3 dB Bandwidth | 120 MHz | 236 MHz |
| Current - Input Bias | 550 nA | 11 µA |
| Voltage - Input Offset | 13 µV | 53 µV |
| Supply Current | 570µA (x2 Channels) | 3mA (x2 Channels) |
| Current - Output / Channel | 73 mA | 116 mA |
| Voltage - Supply Span(Min) | 2.7 V | 3 V |
| Voltage - Supply Span(Max) | 10 V | 10 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 ADA4805-2ARMZ and the ADA4895-2ARMZ-RL?
The ADA4805-2ARMZ is a dual, low-power, low-noise, rail-to-rail output amplifier with a 105 MHz gain bandwidth product and 160 V/µs slew rate, typically drawing 500 µA per amplifier. The ADA4895-2ARMZ-RL is a dual, high-speed, low-power amplifier with a 1.5 GHz gain bandwidth product and 380 V/µs slew rate, typically drawing 3 mA per amplifier. The ADA4895-2ARMZ-RL is supplied in a 500-unit reel (RL suffix), while the ADA4805-2ARMZ is supplied in standard tube/tray packaging.
Are the ADA4805-2ARMZ and ADA4895-2ARMZ-RL pin-compatible?
Yes. Both devices are offered in the same 8-lead MSOP (RM) package with identical pin functions, so they are pin-compatible when the package and pinout match the manufacturer datasheet.
Can the ADA4805-2ARMZ be used as a direct drop-in replacement for the ADA4895-2ARMZ-RL?
Not without design validation. Although pin-compatible in the 8-lead MSOP package, the two amplifiers differ significantly in bandwidth (105 MHz vs 1.5 GHz), slew rate (160 V/µs vs 380 V/µs), supply current (500 µA vs 3 mA per amplifier), and noise/offset performance. Circuit stability, feedback compensation, and power budget must be re-verified against the respective datasheets before substitution.
How do the supply current and power consumption of the two amplifiers compare?
The ADA4805-2ARMZ typically draws about 500 µA per amplifier (approximately 1 mA total for the dual), making it suitable for low-power designs. The ADA4895-2ARMZ-RL typically draws about 3 mA per amplifier (approximately 6 mA total for the dual), reflecting its higher speed. Designers should confirm exact quiescent current values from the manufacturer datasheets for the specific supply voltage and temperature conditions.
Which device is better suited for high-speed signal chains?
The ADA4895-2ARMZ-RL is better suited for high-speed signal chains due to its 1.5 GHz gain bandwidth product and 380 V/µs slew rate, which support wider bandwidth and faster settling. The ADA4805-2ARMZ, with 105 MHz gain bandwidth and 160 V/µs slew rate, is better suited to lower-power, moderate-bandwidth applications.
What packaging options distinguish the ADA4805-2ARMZ from the ADA4895-2ARMZ-RL?
Both parts are available in the 8-lead MSOP (RM) package. The ADA4805-2ARMZ is typically supplied in standard tube/tray quantities, while the ADA4895-2ARMZ-RL suffix indicates tape-and-reel packaging in 500-unit reels, which is preferable for automated high-volume assembly. Buyers should verify the exact packaging quantity and orientation from the distributor or manufacturer datasheet.
Do both amplifiers operate on the same supply voltage range?
Both devices are designed for single-supply and dual-supply operation in the low-voltage range typical of precision analog signal conditioning. Exact minimum and maximum supply voltages, as well as output swing and input common-mode range, must be confirmed from the respective manufacturer datasheets, since the two parts are optimized for different power and speed trade-offs.