Part A
AMC3301DWER
德州儀器
- Lifecycle
- Active
- Stock
- 5943 件
- Package
- SOIC-16
- Series
- 線性放大器-專用
Replacement verdict
Compatible functional replacement candidate
The AMC3301DWER and AMC3302QDWERQ1 are both isolated amplifiers in the same SOIC-16 (DWE) package with identical pinout and a ±50 mV input range, making them strong functional replacement candidates. The AMC3302QDWERQ1 is the automotive-qualified variant (AEC-Q100 Grade 1) with a higher fixed gain of 41 versus 8.2 on the AMC3301DWER, so system gain scaling must be re-validated before substitution. Both share the same reinforced isolation rating and supply architecture, but the gain difference and qualification grade are the key factors to confirm for the target application.
Package and Pinout
High match
Input Voltage Range
High match
Fixed Gain
Validation required
Qualification Grade
Validation required
Parts at a glance
Part B
AMC3302QDWERQ1
德州儀器
- Lifecycle
- Active
- Stock
- 9368 件
- Package
- SOIC-16
- Series
- 線性放大器-專用
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 | AMC3302QDWERQ1 | Why it matters |
|---|---|---|---|
| Input Voltage Range | ±250 mV | ±50 mV | Defines the maximum differential signal the isolated amplifier can accept; a smaller range suits shunt-based current sensing with lower voltage drops. |
| Gain | 8.2 V/V | 41 V/V | Determines the output scaling relative to input; different gain changes the signal chain design and ADC full-scale matching. |
| Input Offset Error | ±0.2 mV (max) | ±0.04 mV (max) | Lower offset improves DC accuracy, which is critical for precise current measurement in motor and power systems. |
| Gain Error | ±0.3% (max) | ±0.2% (max) | Gain error affects measurement accuracy across the full input range; tighter gain error yields more consistent readings. |
| Input Bandwidth | 330 kHz | 1 MHz | Bandwidth limits how fast signals can be tracked; higher bandwidth supports faster current-loop and control applications. |
| Isolation Rating | 5 kV RMS (reinforced) | 5 kV RMS (reinforced) | Isolation rating ensures safe galvanic separation between high-voltage and low-voltage domains; both meet reinforced isolation requirements. |
| Supply Voltage | 3.0 V to 5.5 V (single supply) | 3.0 V to 5.5 V (single supply) | Compatible supply ranges allow drop-in replacement in the same power rail design without rework. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Matching temperature ranges ensure both parts are suitable for the same harsh industrial and automotive environments. |
| Qualification | Industrial grade | AEC-Q100 qualified (automotive) | Automotive qualification indicates the part meets stricter reliability and quality standards required for vehicle applications. |
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 | AMC3301DWER | AMC3302QDWERQ1 |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolated | Amplifier |
| Mounting Type | Surface Mount | Surface Mount |
| Applications | Driver | - |
Frequently asked questions
What are the AMC3301DWER and AMC3302QDWERQ1?
Both are isolated amplifiers from Texas Instruments in the AMC330x family, designed for shunt-based current sensing. The AMC3301DWER is the standard industrial-grade version, while the AMC3302QDWERQ1 is the automotive-qualified variant (AEC-Q100 Grade 1) with a wider specified temperature range.
What is the key difference between the AMC3301DWER and AMC3302QDWERQ1?
The primary difference is qualification and temperature grade. The AMC3302QDWERQ1 is AEC-Q100 Grade 1 qualified for automotive use with a specified operating temperature range of -40°C to +125°C, whereas the AMC3301DWER is specified for -40°C to +125°C as an industrial-grade device without automotive qualification.
Are the AMC3301DWER and AMC3302QDWERQ1 pin-compatible?
Yes. Both devices are offered in the same 8-pin SOIC (DWE) package with identical pin functions, allowing the automotive-qualified AMC3302QDWERQ1 to be used as a drop-in replacement for the AMC3301DWER in the same PCB footprint, subject to design validation.
What is the input voltage range of these isolated amplifiers?
Both the AMC3301DWER and AMC3302QDWERQ1 feature a ±250 mV input voltage range optimized for shunt resistor current sensing, with a fixed gain of 8.1 V/V and a differential output.
What isolation rating do the AMC3301DWER and AMC3302QDWERQ1 provide?
Both devices provide reinforced isolation rated at 5 kV RMS (UL 1577) and are qualified to VDE 0884-17 with a maximum working isolation voltage of 1.5 kV peak, supporting high-voltage current sensing applications.
Can the AMC3302QDWERQ1 be used in non-automotive applications?
Yes. The AMC3302QDWERQ1 is functionally equivalent to the AMC3301DWER and can be used in industrial designs, though the automotive-qualified part typically carries a higher cost. Selection should be based on qualification requirements and cost targets.
What is the supply voltage and output interface of these devices?
Both devices operate from a single 3.3 V to 5.5 V supply on the high side and 3.0 V to 5.5 V on the low side, and provide a differential analog output that can be interfaced to an ADC or microcontroller for current measurement.