Part A
AD603AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6107 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD603AR and AD603AR-REEL7 are functionally identical, sharing the same die, package, and electrical specifications; the only distinction is the packaging format, with the REEL7 variant supplied on tape and reel for automated assembly. Either part number can be used interchangeably in the same design, and selection should be driven solely by the production handling and reflow requirements of the assembly line.
Package Type
High match
Pin Configuration
High match
Electrical Specifications
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD603AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3729 Stückzahl
- Package
- SOIC-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 | AD603AR | AD603AR-REEL7 | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures identical silicon design and process, critical for functional substitutability. |
| Amplifier Type | Variable Gain Amplifier (VGA) | Variable Gain Amplifier (VGA) | Both are the same VGA type, so they serve the same signal-conditioning function in a circuit. |
| Package / Case | 8-SOIC | 8-SOIC | Identical package footprint allows drop-in replacement on the same PCB layout. |
| Number of Channels | 1 | 1 | Single-channel configuration must match for the part to be functionally interchangeable. |
| Gain Range | -11 dB to +31 dB | -11 dB to +31 dB | The adjustable gain window defines the dynamic range the amplifier can provide in the application. |
| Bandwidth | 90 MHz | 90 MHz | Bandwidth determines the maximum signal frequency the amplifier can handle without significant attenuation. |
| Supply Voltage Range | ±4.75 V to ±6.3 V | ±4.75 V to ±6.3 V | Matching supply requirements ensures the part operates correctly in the existing power rail design. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting style confirms compatibility with the assembly process and board design. |
| Packaging | Tube | Tape & Reel | Packaging differs for automated vs. manual assembly; the electrical part is identical but handling and reorder quantities differ. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD603AR | AD603AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | X-AMP® | X-AMP® |
| Part Status | Obsolete | Obsolete |
| Amplifier Type | Variable Gain | Variable Gain |
| Number of Circuits | 1 | 1 |
| Slew Rate | 275V/µs | 275V/µs |
| -3 dB Bandwidth | 90 MHz | 90 MHz |
| Current - Input Bias | 200 nA | 200 nA |
| Supply Current | 12.5mA | 12.5mA |
| Current - Output / Channel | 50 mA | 50 mA |
| Voltage - Supply Span(Min) | 9.5 V | 9.5 V |
| Voltage - Supply Span(Max) | 12.6 V | 12.6 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD603AR and AD603AR-REEL7?
Both parts are the same AD603 variable gain amplifier (VGA) die in the same 8-lead SOIC package; the only difference is packaging format. AD603AR is supplied in tube/rail form, while AD603AR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. Electrical specifications are identical.
Are AD603AR and AD603AR-REEL7 electrically and functionally interchangeable?
Yes. Both are the AD603 in the 8-lead SOIC (R-8) package with the same pinout and specified performance, so they are interchangeable in a design. The choice between them is driven by assembly method (tube vs. tape-and-reel), not by electrical differences.
What is the gain range and gain control characteristic of the AD603?
The AD603 is a linear-in-dB VGA with a pin-selectable gain range of -11 dB to +31 dB (90 MHz bandwidth) or +9 dB to +51 dB (9 MHz bandwidth), set by the connection of the GPOS/GNEG gain-control pins. Gain slope is 25 mV/dB nominal.
What supply voltage and current does the AD603 require?
The AD603 operates from dual supplies of ±4.5 V to ±6.3 V (nominal ±5 V). Quiescent supply current is typically 20 mA.
What bandwidth does the AD603 provide?
The -3 dB bandwidth is 90 MHz at the -11 dB to +31 dB gain setting and 9 MHz at the +9 dB to +51 dB gain setting, per the Analog Devices datasheet.
What package does the AD603AR use, and is it RoHS compliant?
The AD603AR and AD603AR-REEL7 are both supplied in the 8-lead SOIC (R-8) package. RoHS compliance status should be confirmed against the specific ordering code and the manufacturer's current product page, as compliance markings vary by orderable part number.
Why would a designer choose AD603AR-REEL7 over AD603AR?
AD603AR-REEL7 is intended for high-volume automated pick-and-place assembly, where 7-inch tape-and-reel packaging improves feeder efficiency and throughput. AD603AR in tubes is typically used for prototyping, low-volume runs, or manual assembly.
Can AD603AR and AD603AR-REEL7 be mixed on the same production line?
Yes, since they are the same device in the same package. However, the feeder and handling setup differ between tube and tape-and-reel, so the assembly program must be configured for the packaging format actually loaded.