Part A
AD627ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4972 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD627BR-REEL is a functionally compatible replacement candidate for the AD627ARZ, sharing the same amplifier topology, pinout, and supply range, with the BR grade offering tighter offset voltage and gain error specifications. Designers should confirm grade-dependent precision requirements and packaging format before substituting.
Amplifier Topology
High match
Pinout and Package
High match
Supply Voltage Range
High match
Grade-Dependent Precision
Validation required
Parts at a glance
Part B
AD627BR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7529 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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 | AD627BR-REEL | Why it matters |
|---|---|---|---|
| Input Offset Voltage (max) | 150 µV | 75 µV | Lower offset voltage improves DC accuracy; the B grade offers tighter offset, which matters for precision measurement front-ends. |
| Input Offset Voltage Drift (max) | 1 µV/°C | 0.5 µV/°C | Drift determines offset stability over temperature; the B grade maintains accuracy across the operating range better than the A grade. |
| Input Bias Current (max) | 10 nA | 10 nA | Bias current affects error with high source impedance; both grades share the same specification here. |
| Gain Error (max) | 0.10% | 0.05% | Gain error impacts absolute accuracy of the amplified signal; the B grade provides tighter gain accuracy for precision applications. |
| Gain Nonlinearity (max) | 50 ppm | 25 ppm | Nonlinearity limits distortion and accuracy at larger signal swings; the B grade offers better linearity for high-fidelity signal conditioning. |
| Input Voltage Noise (1 kHz, typ) | 27 nV/√Hz | 27 nV/√Hz | Noise floor sets the minimum resolvable signal; both grades share the same typical noise performance. |
| Common-Mode Rejection Ratio (min, G=100) | 100 dB | 110 dB | CMRR determines rejection of common-mode interference; the B grade provides superior rejection for noisy environments. |
| Supply Voltage Range | 2.2 V to 36 V | 2.2 V to 36 V | Operating supply range defines compatibility with single- and dual-supply systems; both grades are identical. |
| Supply Current (max) | 85 µA | 85 µA | Quiescent current affects power budget in battery-powered designs; both grades share the same specification. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines environmental compatibility; both grades are rated identically for industrial use. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD627ARZ | AD627BR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| 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 | 25 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 key differences between the AD627ARZ and AD627BR-REEL?
Both are AD627 micropower instrumentation amplifiers from Analog Devices in an 8-lead SOIC package. The AD627ARZ is supplied in tube form and is specified with a maximum input offset voltage of 250 µV and a maximum input offset voltage drift of 3 µV/°C. The AD627BR-REEL is the higher-grade B version supplied on a 13-inch reel and is specified with a maximum input offset voltage of 150 µV and a maximum input offset voltage drift of 1 µV/°C. Both share the same pinout, supply range of 2.2 V to 36 V (single supply) or ±1.1 V to ±18 V (dual supply), and gain range of 5 to 1000 set by a single external resistor.
Are the AD627ARZ and AD627BR-REEL pin-compatible and functionally interchangeable?
Yes. Both devices are AD627 instrumentation amplifiers in the same 8-lead SOIC (R-8) package with identical pin functions, so they are pin-compatible. They are functionally interchangeable in most circuits, but the AD627BR-REEL offers tighter offset voltage and offset drift specifications, so the substitution should be validated against the accuracy requirements of the target design.
What is the gain configuration for the AD627ARZ and AD627BR-REEL?
Both devices set gain with a single external resistor connected between the RG pins, using the relation G = 5 + (200 kΩ / RG). Gains from 5 to 1000 are achievable, and the same external resistor value produces the same gain on both the AD627ARZ and AD627BR-REEL.
What supply voltage range do the AD627ARZ and AD627BR-REEL support?
Both parts operate from a single supply of 2.2 V to 36 V or a dual supply of ±1.1 V to ±18 V, making them suitable for battery-powered and industrial signal-conditioning applications. The supply range is identical for the A and B grades.
How do the offset voltage and drift specifications compare between the two grades?
The AD627ARZ is specified with a maximum input offset voltage of 250 µV and a maximum offset voltage drift of 3 µV/°C. The AD627BR-REEL is specified with a maximum input offset voltage of 150 µV and a maximum offset voltage drift of 1 µV/°C. The B grade therefore provides tighter DC accuracy for precision applications.
What is the difference in packaging and delivery format between the AD627ARZ and AD627BR-REEL?
The AD627ARZ is supplied in tube packaging, while the AD627BR-REEL is supplied on a 13-inch tape-and-reel for automated pick-and-place assembly. Both use the same 8-lead SOIC package body, so PCB footprint and land pattern are identical.
Do the AD627ARZ and AD627BR-REEL differ in power consumption or bandwidth?
No. Both grades share the same typical supply current of 60 µA and the same gain-bandwidth behavior, with a typical bandwidth of 80 kHz at G = 5 and 20 kHz at G = 100. The A and B grades differ only in specified DC precision parameters, not in quiescent current or AC performance.
Which grade should be selected for a precision low-drift design?
For designs requiring tighter DC accuracy, the AD627BR-REEL is the appropriate choice because its maximum offset voltage is 150 µV and maximum offset drift is 1 µV/°C, compared with 250 µV and 3 µV/°C for the AD627ARZ. Where those tighter limits are not needed, the AD627ARZ provides the same functionality at a lower grade.