Part A
AD627ARZ-R7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3271 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD627ARZ-R7 and AD627AR are functionally equivalent instrumentation amplifiers sharing the same core die, package, and electrical specifications; the -R7 suffix denotes tape-and-reel packaging rather than a parametric difference, making the two part numbers interchangeable for design purposes with only a packaging-format validation required.
Amplifier Function and Topology
High match
Package Type and Pinout
High match
Key Electrical Specifications
High match
Packaging and Ordering Format
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 | AD627ARZ-R7 | AD627AR | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts serve the same core function, enabling direct substitution. |
| Number of Channels | 1 | 1 | Channel count must match for the replacement to fit the same circuit topology. |
| Supply Voltage Range | 2.2 V to 36 V (±1.1 V to ±18 V) | 2.2 V to 36 V (±1.1 V to ±18 V) | Identical supply range ensures the part operates correctly in the same power rail design. |
| Input Offset Voltage (max) | 150 µV | 150 µV | Offset voltage directly affects DC accuracy; matching values preserve measurement precision. |
| Gain Bandwidth Product | 80 kHz (G = 1) | 80 kHz (G = 1) | Bandwidth determines the maximum signal frequency the amplifier can handle accurately. |
| Input Bias Current (max) | 10 nA | 10 nA | Low bias current minimizes errors in high-impedance sensor interfaces. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ratings ensure reliable operation in the same environmental conditions. |
| Package / Mounting Type | 8-SOIC, Surface Mount | 8-SOIC, Surface Mount | Same package and footprint allow drop-in replacement on the existing PCB. |
| Packaging / Delivery Form | Tape & Reel (R7) | Tube / Bulk | Packaging form affects assembly line handling and inventory; reels suit automated pick-and-place while tubes suit manual or low-volume builds. |
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 | AD627ARZ-R7 | AD627AR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Instrumentation | Instrumentation |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.06V/µs | 0.06V/µs |
| -3 dB Bandwidth | 80 kHz | 80 kHz |
| Current - Input Bias | 2 nA | 2 nA |
| Voltage - Input Offset | 50 µV | 50 µV |
| Supply Current | 60µA | 60µA |
| Current - Output / Channel | 25 mA | 25 mA |
| Voltage - Supply Span(Min) | 2.2 V | 2.2 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the main differences between the AD627ARZ-R7 and the AD627AR?
Both devices are the same AD627 micropower instrumentation amplifier die in an 8-lead SOIC package. The AD627ARZ-R7 is supplied in a 7-inch reel with 750 pieces per reel and is RoHS-compliant (Z suffix), while the AD627AR is the tube/rail version and is a non-RoHS (Pb) part. Electrical performance is identical per the AD627 datasheet.
Are the AD627ARZ-R7 and AD627AR electrically interchangeable?
Yes. Both are the AD627 in the same 8-lead SOIC (R-8) package with identical pinout and specified performance, so they are electrically interchangeable. The difference is packaging (reel vs. tube) and RoHS status, which affects assembly and compliance requirements rather than circuit behavior.
What is the pinout of the AD627 in the 8-lead SOIC package?
Per the AD627 datasheet, the 8-lead SOIC pinout is: Pin 1 -RG, Pin 2 -IN, Pin 3 +IN, Pin 4 -VS, Pin 5 REF, Pin 6 OUTPUT, Pin 7 +VS, Pin 8 +RG. The gain-setting resistor is connected between the -RG and +RG pins.
What supply voltage range and supply current does the AD627 support?
The AD627 operates from a single supply of 2.2 V to 36 V or a dual supply of ±1.1 V to ±18 V. Its typical supply current is 60 µA (85 µA maximum) per the AD627 datasheet, making it suitable for battery-powered and low-power signal conditioning.
How is the gain of the AD627 set?
Gain is set by a single external resistor RG connected between the -RG and +RG pins. Per the AD627 datasheet, G = 5 + (200 kΩ / RG), giving a gain range of 5 to 1000. The device is not unity-gain stable; minimum gain is 5.
What are the key DC accuracy specifications of the AD627?
Per the AD627 datasheet, typical input offset voltage is 75 µV (250 µV maximum), input offset drift is 0.5 µV/°C typical, input bias current is 3 nA typical (10 nA maximum), and CMRR is 90 dB minimum at G = 5. These specifications apply equally to the AD627ARZ-R7 and AD627AR.
Does the AD627ARZ-R7 meet RoHS requirements while the AD627AR does not?
Yes. The "Z" suffix in AD627ARZ-R7 denotes a RoHS-compliant, lead-free package finish, and the "-R7" denotes 7-inch reel packaging. The AD627AR is the standard (non-RoHS, lead-containing) tube version. Designers with RoHS obligations should select the AD627ARZ-R7.
What bandwidth and slew rate does the AD627 provide?
Per the AD627 datasheet, the -3 dB bandwidth is 77 kHz at G = 5 and 20 kHz at G = 100, with a slew rate of 0.05 V/µs. These AC specifications are identical for the AD627ARZ-R7 and AD627AR since they share the same silicon.