Part A
AD8604ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3528 Stückzahl
- Package
- TSSOP-14
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8607ARMZ-R2 is a viable functional replacement candidate for the AD8604ARUZ in low-voltage, low-power signal conditioning applications, provided the reduced channel count and tighter package footprint are acceptable. Both parts share CMOS rail-to-rail input/output architecture and comparable supply voltage ranges, but the AD8604ARUZ offers four channels in a TSSOP-14 package while the AD8607ARMZ-R2 provides two channels in an MSOP-8 package. Designers must validate channel count requirements, PCB footprint, and any application-specific AC performance needs before substituting.
Channel Count
Validation required
Package Type
Validation required
Supply Voltage Range
High match
Input/Output Architecture
High match
Parts at a glance
Part B
AD8607ARMZ-R2
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7401 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 | AD8604ARUZ | AD8607ARMZ-R2 | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 (Quad) | 2 (Dual) | Channel count determines how many independent signal paths can be handled; a quad and a dual are not directly interchangeable in multi-channel designs. |
| Package / Mounting | 14-Lead TSSOP | 8-Lead MSOP | Different package footprints and pin counts require different PCB layouts, so they are not drop-in replacements. |
| Supply Voltage Range | 2.7 V to 5.5 V | 1.8 V to 5.0 V | The usable supply window affects compatibility with low-voltage systems; the AD8607 supports lower minimum supplies. |
| Input Offset Voltage (Max) | 750 µV | 50 µV | Lower offset voltage improves DC precision; the AD8607 offers significantly better offset performance. |
| Input Bias Current (Typ) | 0.2 pA | 0.5 pA | Very low bias current is important for high-impedance sensor interfaces; both are excellent but differ slightly. |
| Gain Bandwidth Product | 8.4 MHz | 400 kHz | GBW sets the achievable signal bandwidth and closed-loop speed; the AD8604 is far faster than the AD8607. |
| Slew Rate | 6 V/µs | 0.1 V/µs | Slew rate limits large-signal response speed; the AD8604 handles much faster transients than the AD8607. |
| Supply Current per Amplifier (Typ) | 1.2 mA | 50 µA | Quiescent current drives power budget; the AD8607 is a micropower part suited to battery-powered designs. |
| Input Voltage Noise Density (Typ) | 8 nV/√Hz | 22 nV/√Hz | Lower noise density benefits low-level signal amplification; the AD8604 provides quieter performance. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Both cover the industrial temperature range, so thermal environment is not a differentiator between them. |
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 | AD8604ARUZ | AD8607ARMZ-R2 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 4 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 6V/µs | 0.1V/µs |
| Gain Bandwidth Product | 8.4 MHz | 400 kHz |
| Current - Input Bias | 0.2 pA | 0.2 pA |
| Voltage - Input Offset | 80 µV | 12 µV |
| Supply Current | 750µA (x4 Channels) | 40µA (x2 Channels) |
| Current - Output / Channel | 50 mA | 70 mA |
| Voltage - Supply Span(Min) | 2.7 V | 1.8 V |
| Voltage - Supply Span(Max) | 5.5 V | 5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Series | DigiTrim® | - |
Frequently asked questions
What are the key differences between the AD8604ARUZ and AD8607ARMZ-R2?
The AD8604ARUZ is a quad, rail-to-rail input/output operational amplifier supplied in a 14-lead TSSOP package, while the AD8607ARMZ-R2 is a dual, rail-to-rail input/output operational amplifier supplied in an 8-lead MSOP package and delivered on a 250-unit reel. The primary differences are channel count (4 vs 2) and package footprint (TSSOP-14 vs MSOP-8).
Are the AD8604ARUZ and AD8607ARMZ-R2 pin-compatible?
No. The AD8604ARUZ uses a 14-lead TSSOP package and the AD8607ARMZ-R2 uses an 8-lead MSOP package, so they have different pin counts and PCB land patterns and cannot be treated as pin-compatible substitutes.
Do both amplifiers support rail-to-rail input and output operation?
Yes. Both the AD8604ARUZ and AD8607ARMZ-R2 are rail-to-rail input and output (RRIO) operational amplifiers, allowing signal swing close to both supply rails, which is useful in low-voltage single-supply designs.
What supply voltage range do the AD8604ARUZ and AD8607ARMZ-R2 support?
Both devices are specified for single-supply operation from 2.7 V to 5.5 V, and they can also be operated from dual supplies within the corresponding total supply range, making them suitable for low-voltage portable and battery-powered systems.
How do the channel counts of the AD8604ARUZ and AD8607ARMZ-R2 compare?
The AD8604ARUZ integrates four independent operational amplifiers in one package, whereas the AD8607ARMZ-R2 integrates two independent operational amplifiers. The quad device suits multi-channel signal conditioning, while the dual device suits compact two-channel designs.
What are the package and ordering differences between the AD8604ARUZ and AD8607ARMZ-R2?
The AD8604ARUZ is offered in a 14-lead TSSOP package, and the AD8607ARMZ-R2 is offered in an 8-lead MSOP package with the -R2 suffix indicating a 250-unit tape-and-reel quantity. Package selection should be based on board space, channel count, and assembly requirements.
Can the AD8607ARMZ-R2 replace the AD8604ARUZ in an existing design?
Not directly. The AD8607ARMZ-R2 provides only two channels versus four on the AD8604ARUZ and uses a different package and pinout, so a replacement would require schematic, layout, and channel-count validation against the manufacturer datasheets.