Part A
AMC3301DWER
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 5943 個数
- Package
- SOIC-16
- Series
- リニアアンプ - 特殊用途
Replacement verdict
Compatible functional replacement candidate
The AMC3301QDWERQ1 is a functionally compatible replacement candidate for the AMC3301DWER, sharing the same isolated amplifier core, package footprint, and supply architecture, with the automotive-grade variant adding AEC-Q100 qualification and an extended temperature range. Designers should confirm automotive qualification requirements and thermal margin before substituting in production.
Package Type
High match
Supply Voltage Range
High match
Operating Temperature Range
Validation required
Automotive Qualification
Validation required
Parts at a glance
Part B
AMC3301QDWERQ1
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 2547 個数
- Series
- リニアアンプ - 特殊用途アンプ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AMC3301DWER | AMC3301QDWERQ1 | Why it matters |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Same manufacturer ensures consistent design, documentation, and support. |
| Function / Type | Isolated amplifier with integrated DC/DC converter | Isolated amplifier with integrated DC/DC converter | Identical core function confirms the parts are functionally interchangeable in signal-chain designs. |
| Input Voltage Range | ±250 mV | ±250 mV | Matching input range ensures the same signal levels can be measured without redesign. |
| Isolation Rating | 5 kV RMS (reinforced) | 5 kV RMS (reinforced) | Equal isolation capability preserves safety margins in high-voltage measurement applications. |
| Supply Voltage | 3.0 V to 5.5 V (single supply) | 3.0 V to 5.5 V (single supply) | Same supply requirements allow drop-in replacement on existing power rails. |
| Package | 16-pin SOIC (wide body) | 16-pin SOIC (wide body) | Identical footprint enables direct PCB substitution without layout changes. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C (AEC-Q100 Grade 1 qualified) | The automotive-qualified version is screened and certified for harsh environments, which matters for automotive and high-reliability designs. |
| Automotive Qualification | Not AEC-Q100 qualified | AEC-Q100 Grade 1 qualified | Only the Q1 variant is formally qualified for automotive use, affecting compliance and reliability requirements. |
| Gain | 8.2 (fixed) | 8.2 (fixed) | Same fixed gain keeps the transfer function identical, so calibration and scaling remain valid. |
| Output Interface | Differential analog output | Differential analog output | Matching output type ensures compatibility with the same downstream ADC or signal conditioning. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC3301DWER | AMC3301QDWERQ1 |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolated | Isolation |
| Mounting Type | Surface Mount | Surface Mount |
| Base Product Number | - | AMC3301 |
| Grade | - | Automotive |
| Qualification | - | AEC-Q100 |
| Applications | Driver | - |
Frequently asked questions
What are the key differences between the AMC3301DWER and the AMC3301QDWERQ1?
The AMC3301DWER and AMC3301QDWERQ1 are functionally the same isolated amplifier (AMC3301) in the same 16-pin SOIC (DWE) package. The primary difference is qualification: the AMC3301QDWERQ1 is the automotive-qualified version (Q1 suffix) that is AEC-Q100 qualified and specified over the automotive temperature range, while the AMC3301DWER is the standard industrial-grade version. Both share the same reinforced isolation, ±250 mV input range, and integrated DC/DC converter for isolated supply.
Are the AMC3301DWER and AMC3301QDWERQ1 pin-to-pin and package compatible?
Yes. Both devices are offered in the same 16-pin SOIC (DWE) package with identical pinout and footprint, so they are pin-to-pin and PCB land-pattern compatible. The difference is in qualification grade and temperature specification, not in package or pin function.
What is the input voltage range and gain of these isolated amplifiers?
Both the AMC3301DWER and AMC3301QDWERQ1 are precision isolated amplifiers with a nominal input range of ±250 mV and a fixed gain of 8.2 V/V, intended for shunt-based current sensing. The differential input is designed for low-level signals across a shunt resistor, and the output is a differential signal referenced to the isolated side.
What isolation rating do the AMC3301DWER and AMC3301QDWERQ1 provide?
Both devices provide reinforced isolation rated for 7 kV peak per the relevant isolation standards, with a working voltage suitable for high-voltage industrial and automotive systems. The integrated isolated DC/DC converter eliminates the need for a separate isolated supply on the high-voltage side, simplifying the isolation barrier design.
Can the AMC3301DWER be used in automotive applications, or must the AMC3301QDWERQ1 be used?
For automotive applications requiring AEC-Q100 qualification and automotive temperature-range specifications, the AMC3301QDWERQ1 should be used. The AMC3301DWER is the industrial-grade version and is not AEC-Q100 qualified. Designers should select the Q1 variant when the end application mandates automotive qualification.
Do both variants share the same supply voltage requirements?
Yes. Both the AMC3301DWER and AMC3301QDWERQ1 operate from a single low-voltage supply on the isolated side (nominally 3.3 V or 5 V, per the datasheet) and generate the high-side supply internally through the integrated isolated DC/DC converter. The supply and isolation architecture is identical between the two variants.
What is the operating temperature range for each variant?
The AMC3301QDWERQ1 is specified over the automotive temperature range (typically −40°C to +125°C) consistent with AEC-Q100 Grade 1 requirements. The AMC3301DWER is specified over the industrial temperature range (typically −40°C to +125°C) per its datasheet. Designers should confirm the exact temperature grade in the respective manufacturer datasheet for the target variant.
Are the AMC3301DWER and AMC3301QDWERQ1 interchangeable in an existing design?
Because they share the same package, pinout, and core electrical function, the two variants are largely interchangeable at the board level. However, substitution should be validated against the target application's qualification and temperature requirements: the Q1 variant is required where AEC-Q100 automotive qualification is mandated, while the standard variant is appropriate for industrial use.