Part A
AD8542ARUZ
ADI公司
- Lifecycle
- Active
- Stock
- 7540 件
- Series
- Linear - Amplifiers - Instrumentation, Op Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8544ARUZ and AD8542ARUZ share the same TSSOP-14 package, CMOS rail-to-rail input/output architecture, and 2.7 V to 5.5 V supply range, making them functionally aligned for many designs. The AD8544ARUZ integrates four amplifiers versus two in the AD8542ARUZ, so the primary distinction is channel count rather than electrical behavior. Designers substituting the quad device for the dual device must account for the additional active channels and verify pinout mapping within the existing layout.
Amplifier Channel Count
Not compatible
Package Type
High match
Input/Output Architecture
High match
Supply Voltage Range
High match
Parts at a glance
Part B
AD8544ARUZ
ADI公司
- Lifecycle
- Active
- Stock
- 3601 件
- Package
- TSSOP-14
- 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 | AD8544ARUZ | AD8542ARUZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 | 2 | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating voltage window; matching ranges allow the parts to be used in the same power supply designs. |
| Input Offset Voltage (Max) | 6 mV | 6 mV | Affects DC accuracy; identical offset specs mean comparable precision in signal conditioning applications. |
| Gain Bandwidth Product | 1 MHz | 1 MHz | Sets the frequency range over which the amplifier provides useful gain; matching values indicate equivalent AC performance. |
| Input Bias Current (Typ) | 1 pA | 1 pA | Low bias current is critical for high-impedance sensor interfaces; identical values ensure similar input loading behavior. |
| Supply Current per Amplifier (Typ) | 45 µA | 45 µA | Determines power consumption; matching per-amplifier current supports equivalent battery life in portable designs. |
| Slew Rate | 0.92 V/µs | 0.92 V/µs | Governs large-signal transient response; identical slew rates mean comparable dynamic behavior. |
| Package / Pin Count | 14-Lead TSSOP | 8-Lead TSSOP | Footprint and pin count differ, so PCB layout and board space must be redesigned when substituting one for the other. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms both parts are rated for the same environmental conditions, supporting use in industrial temperature applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8542ARUZ | AD8544ARUZ |
|---|---|---|
| Part Status | Active | Active |
| Base Product Number | AD8542 | - |
| Amplifier Type | Standard (General Purpose) | General Purpose |
| Number of Circuits | 2 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.92V/µs | 0.92V/µs |
| Gain Bandwidth Product | 1 MHz | 1 MHz |
| Current - Input Bias | 4 pA | 4 pA |
| Voltage - Input Offset | 1 mV | 1 mV |
| Supply Current | 45µA (x2 Channels) | 45µA (x4 Channels) |
| Voltage - Supply Span (Min) | 2.7 V | - |
| Voltage - Supply Span (Max) | 5.5 V | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tube | - |
| Current - Output / Channel | 30 mA | 30 mA |
| Voltage - Supply Span(Min) | - | 2.7 V |
| Voltage - Supply Span(Max) | - | 5.5 V |
Frequently asked questions
What are the key differences between the AD8544ARUZ and AD8542ARUZ?
The AD8544ARUZ is a quad (four-channel) operational amplifier, while the AD8542ARUZ is a dual (two-channel) operational amplifier. Both are rail-to-rail input/output CMOS amplifiers from Analog Devices in TSSOP packages, but they differ in channel count, pin count, and package footprint (14-lead TSSOP for the AD8544 versus 8-lead TSSOP for the AD8542).
Are the AD8544ARUZ and AD8542ARUZ pin-compatible?
No. The AD8544ARUZ uses a 14-lead TSSOP package, while the AD8542ARUZ uses an 8-lead TSSOP package. The different pin counts and pinouts mean they are not drop-in replacements for each other and require different PCB land patterns.
Do the AD8544ARUZ and AD8542ARUZ share the same supply voltage range?
Yes. Both devices are specified for single-supply operation from 2.7 V to 5.5 V, and both support dual-supply operation within the corresponding total supply range, per Analog Devices datasheets.
What is the gain bandwidth product of the AD8544ARUZ and AD8542ARUZ?
Both the AD8544ARUZ and AD8542ARUZ have a gain bandwidth product of 1 MHz, as specified in the Analog Devices datasheets for the AD8541/AD8542/AD8544 family.
How do the quiescent supply currents of the AD8544ARUZ and AD8542ARUZ compare?
The AD8542ARUZ (dual) has a lower total quiescent supply current than the AD8544ARUZ (quad) because it contains fewer amplifier channels. Per-channel quiescent current is comparable across the family, so the quad device draws approximately twice the total quiescent current of the dual device under identical conditions.
Are the AD8544ARUZ and AD8542ARUZ rail-to-rail on both input and output?
Yes. Both the AD8544ARUZ and AD8542ARUZ feature rail-to-rail input and output swing, allowing operation with input signals and output swings close to both supply rails, as stated in the Analog Devices datasheets.
Which device should be selected for a design requiring four amplifier channels?
The AD8544ARUZ should be selected when four independent amplifier channels are needed in a single package, since it is the quad version of the family. The AD8542ARUZ provides only two channels and would require two packages to achieve four channels.
Do both the AD8544ARUZ and AD8542ARUZ operate over the same temperature range?
Yes. Both devices are specified for the industrial temperature range of −40 °C to +125 °C, as documented in the Analog Devices datasheets for the AD8541/AD8542/AD8544 family.