Part A
AMC3330QDWERQ1
德州儀器
- Lifecycle
- Active
- Stock
- 3759 件
- Package
- SOIC-16
- Series
- 線性放大器-專用
Replacement verdict
Compatible functional replacement candidate
The AMC3301DWER and AMC3330QDWERQ1 are both isolated amplifiers in the same SOIC-16 (DWE) package with matching pinout and 5.0 V nominal supply, making them strong functional replacement candidates. The AMC3330QDWERQ1 is the automotive-qualified variant (AEC-Q100 Grade 1) with an integrated DC/DC converter and a wider specified temperature range, while the AMC3301DWER is the industrial-grade equivalent. Designers should validate the ±1 V versus ±250 mV input range and the integrated isolated bias supply before substituting in a given application.
Package and Pinout
High match
Input Voltage Range
Not compatible
Isolated Bias Supply
Validation required
Qualification and Temperature Grade
Validation required
Parts at a glance
Part B
AMC3301DWER
德州儀器
- Lifecycle
- Active
- Stock
- 5943 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 | AMC3330QDWERQ1 | Why it matters |
|---|---|---|---|
| Input Type | Current input (shunt-based) | Voltage input | Determines whether the device senses current via a shunt or directly measures voltage, which fundamentally changes the sensing circuit topology. |
| Input Voltage Range | ±250 mV (current sense) | ±1 V (voltage sense) | Defines the maximum differential signal the amplifier can accept; mismatched ranges require different front-end scaling and cannot be swapped directly. |
| Isolation Rating | Reinforced, 5 kVrms (per datasheet) | Reinforced, 5 kVrms (per datasheet) | Isolation rating governs safety and creepage/clearance compliance; both meet reinforced isolation, so this is not a differentiator. |
| Integrated DC/DC Converter | Yes (isolated power) | Yes (isolated power) | An integrated isolated DC/DC simplifies high-side power design; both include it, so power architecture is compatible. |
| Output Interface | Differential analog output | Differential analog output | Both provide a differential analog output suitable for driving ADCs; interface compatibility is maintained. |
| Qualification | Industrial grade | AEC-Q100 automotive qualified | Automotive qualification affects reliability screening and suitability for automotive applications; the Q1 variant is qualified for automotive use. |
| Package | SOIC-16 (DWE) | SOIC-16 (DWE) | Package footprint and pinout determine PCB layout compatibility; identical packages allow drop-in layout reuse. |
| Supply Voltage (High Side) | 3.0 V to 5.5 V (per datasheet) | 3.0 V to 5.5 V (per datasheet) | Supply range affects compatibility with system rails; matching ranges simplify power design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC3330QDWERQ1 | AMC3301DWER |
|---|---|---|
| Series | Automotive, AEC-Q100 | - |
| Part Status | Active | Active |
| Type | Isolation Amplifier | Isolated |
| Mounting Type | Surface Mount | Surface Mount |
| Applications | - | Driver |
Frequently asked questions
What are the key differences between the AMC3301DWER and the AMC3330QDWERQ1?
The AMC3301DWER is a precision isolated amplifier with a fixed gain of 8.2 and a ±250 mV input range, while the AMC3330QDWERQ1 is an automotive-qualified (AEC-Q100 Grade 1) isolated amplifier with a fixed gain of 2.0 and a ±1 V input range. The AMC3330QDWERQ1 also integrates a DC/DC converter to power the high-side, whereas the AMC3301DWER requires an external high-side supply.
Are the AMC3301DWER and AMC3330QDWERQ1 pin-to-pin compatible?
No. Although both devices are offered in a 16-pin SOIC (DWE) package, their pin functions differ. The AMC3330QDWERQ1 includes integrated high-side DC/DC converter pins (e.g., VDD1 and HGND), while the AMC3301DWER uses those pins for the high-side supply and signal connections. A direct PCB drop-in replacement is not possible without layout changes.
What is the input voltage range of each device?
The AMC3301DWER has a linear input range of ±250 mV, optimized for shunt-resistor current sensing. The AMC3330QDWERQ1 has a linear input range of ±1 V, allowing direct connection to higher-voltage sensors or bus voltages without additional attenuation.
What are the fixed gains of the AMC3301DWER and AMC3330QDWERQ1?
The AMC3301DWER has a fixed gain of 8.2, producing a differential output of ±2.05 V for a ±250 mV input. The AMC3330QDWERQ1 has a fixed gain of 2.0, producing a differential output of ±2.0 V for a ±1 V input. The gain difference must be accounted for in the downstream ADC scaling.
Is the AMC3330QDWERQ1 automotive qualified, and is the AMC3301DWER?
Yes, the AMC3330QDWERQ1 is AEC-Q100 Grade 1 qualified and operates over a temperature range of –40°C to +125°C, making it suitable for automotive applications. The AMC3301DWER is an industrial-grade device and is not AEC-Q100 qualified; its specified operating temperature range is –40°C to +125°C as well, but it is not intended for automotive qualification requirements.
Does either device integrate an isolated DC/DC converter for the high-side supply?
Yes. The AMC3330QDWERQ1 integrates an isolated DC/DC converter that generates the high-side supply from the low-side VDD1, eliminating the need for an external isolated supply. The AMC3301DWER does not integrate a DC/DC converter and requires an external high-side supply (VDD2) referenced to HGND.
What are the isolation ratings of the AMC3301DWER and AMC3330QDWERQ1?
Both devices provide reinforced isolation. The AMC3301DWER is rated for 7 kV peak per VDE V 0884-11 and 5 kV RMS per UL 1577 for 1 minute. The AMC3330QDWERQ1 is similarly rated for 7 kV peak per VDE V 0884-11 and 5 kV RMS per UL 1577, with a working voltage of 1.5 kV RMS. Designers should confirm the exact isolation parameters in the respective datasheets for their application's certification needs.
Can the AMC3301DWER and AMC3330QDWERQ1 be used interchangeably in an existing design?
No. The two devices differ in input range (±250 mV vs ±1 V), fixed gain (8.2 vs 2.0), high-side supply architecture (external vs integrated DC/DC), and qualification grade (industrial vs AEC-Q100 Grade 1). Interchangeability requires revalidation of the signal chain scaling, power supply design, and qualification requirements against the target application.