Part A
AD8604ARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3528 PCS
- Package
- TSSOP-14
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8604ARUZ and AD8604ARU are functionally equivalent quad operational amplifiers from the same manufacturer family, sharing identical core electrical specifications and pinout. The AD8604ARUZ is the RoHS-compliant variant of the AD8604ARU, differing only in package material compliance and lead finish. Designers can substitute the AD8604ARUZ for the AD8604ARU in existing designs with confidence, provided the RoHS-compliant package finish is acceptable for the target assembly process.
Amplifier Configuration
High match
Package and Pinout
High match
Electrical Specifications
High match
RoHS Compliance and Lead Finish
Validation required
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 | AD8604ARU | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 | 4 | Both are quad op-amps, so channel count matches for multi-channel signal conditioning designs. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical operating range ensures the same power rails can be used without redesign. |
| Gain Bandwidth Product | 8.4 MHz | 8.4 MHz | Same bandwidth means AC signal handling and stability behavior are equivalent. |
| Input Offset Voltage (max) | 750 µV | 750 µV | Matching offset voltage keeps DC accuracy and error budget unchanged. |
| Input Bias Current | 1 pA (typ) | 1 pA (typ) | Very low bias current suits high-impedance sensor interfaces equally in both parts. |
| Package / Mounting | 14-Lead TSSOP, Surface Mount | 14-Lead TSSOP, Surface Mount | Same package and footprint allow drop-in board replacement. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free | Non-RoHS (contains lead) | The Z suffix denotes lead-free/RoHS compliance, which affects regulatory compliance and solder process compatibility. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings ensure equivalent performance in harsh environments. |
| Slew Rate | 6 V/µs | 6 V/µs | Same slew rate preserves large-signal transient response and dynamic behavior. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8604ARUZ | AD8604ARU |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | DigiTrim® | DigiTrim® |
| Part Status | Active | Obsolete |
| Amplifier Type | CMOS | CMOS |
| Number of Circuits | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 6V/µs | 6V/µs |
| Gain Bandwidth Product | 8.4 MHz | 8.4 MHz |
| Current - Input Bias | 0.2 pA | 0.2 pA |
| Voltage - Input Offset | 80 µV | 80 µV |
| Supply Current | 750µA (x4 Channels) | 750µA (x4 Channels) |
| Current - Output / Channel | 50 mA | 50 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the AD8604ARUZ and the AD8604ARU?
The AD8604ARUZ and AD8604ARU are both quad, rail-to-rail, CMOS operational amplifiers from Analog Devices in a 14-lead TSSOP package. The primary difference is the ordering suffix: the "Z" designation in AD8604ARUZ indicates RoHS-compliant, lead-free construction, while the AD8604ARU is the non-RoHS (leaded) version. Both share the same electrical specifications and functional performance.
Are the AD8604ARUZ and AD8604ARU electrically and functionally identical?
Yes. Both parts are the same AD8604 quad op-amp die with identical electrical specifications, including supply voltage range, bandwidth, input offset voltage, and rail-to-rail input/output operation. The only documented difference is the RoHS/lead-free status indicated by the "Z" suffix.
Can the AD8604ARUZ be used as a direct drop-in replacement for the AD8604ARU?
Yes, in most cases. Both devices use the same 14-lead TSSOP package with identical pinout and footprint, so the AD8604ARUZ is a drop-in replacement for the AD8604ARU. The AD8604ARUZ is RoHS-compliant, which may be required for new designs; verify against your assembly and compliance requirements.
What package do the AD8604ARUZ and AD8604ARU use?
Both devices are supplied in a 14-lead TSSOP (Thin Shrink Small Outline Package), designated by the "RU" code in the part number. The package dimensions, pin count, and pinout are identical between the two variants.
What are the key specifications of the AD8604?
The AD8604 is a quad, rail-to-rail input and output CMOS operational amplifier. Verified specifications include operation from a single supply of 2.7 V to 5.5 V, low input offset voltage, low input bias current, and a gain bandwidth product of approximately 8 MHz. It is suited for low-voltage, low-power signal conditioning applications.
Does the "Z" suffix affect the electrical performance of the AD8604ARUZ?
No. The "Z" suffix in Analog Devices part numbering denotes RoHS compliance and lead-free (Pb-free) termination finish. It does not change the electrical characteristics, functional behavior, or datasheet specifications of the device compared with the AD8604ARU.
Which variant should be selected for a new RoHS-compliant design?
The AD8604ARUZ should be selected for new designs requiring RoHS compliance, as its "Z" suffix confirms lead-free, RoHS-compliant construction. The AD8604ARU (non-Z) is the leaded variant and is generally not preferred for new RoHS-restricted products.