Part A
AMC3301DWER
Texas Instruments
- Lifecycle
- Active
- Stock
- 5943 PCS
- Package
- SOIC-16
- Series
- Linear - Amplifiers - Special Purpose
Replacement verdict
Compatible functional replacement candidate
The AMC3301DWER and AMC3302DWE are both isolated amplifiers in the same 8-pin SOIC (DWE) package with identical pinout and supply architecture, making them strong functional replacement candidates. The AMC3302DWE offers a higher input voltage range and improved gain error specification, while the AMC3301DWER provides a wider specified operating temperature range. Designers should validate gain error, input range, and thermal margin against the target application before substituting one for the other.
Package Type
High match
Pinout Configuration
High match
Input Voltage Range
Validation required
Gain Error Specification
Validation required
Parts at a glance
Part B
AMC3302DWE
Texas Instruments
- Lifecycle
- Active
- Stock
- 3709 PCS
- Package
- SOIC-16
- Series
- Linear - Amplifiers - Special Purpose
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 | AMC3302DWE | Why it matters |
|---|---|---|---|
| Input Voltage Range | ±250 mV | ±50 mV | Defines the differential signal span the isolated amplifier can accept; a smaller range suits low-amplitude shunts, while a larger range suits higher-voltage sensing. |
| Gain | 8.2 V/V | 41 V/V | Sets the output scaling relative to input; different gain directly changes the transfer function and requires recalibration if substituted. |
| Input Offset Voltage (max) | ±0.2 mV | ±0.05 mV | Offset error directly affects measurement accuracy at low signal levels; tighter offset improves precision in current-sensing applications. |
| Gain Error (max) | ±0.3% | ±0.2% | Gain error contributes to full-scale measurement inaccuracy; lower gain error yields better absolute accuracy without calibration. |
| Input Bandwidth | 330 kHz | 100 kHz | Determines the maximum signal frequency the amplifier can faithfully pass; affects suitability for fast current-loop or motor-control sensing. |
| Isolation Rating | 5 kV RMS (reinforced) | 5 kV RMS (reinforced) | Specifies the galvanic isolation level for safety and noise immunity; identical ratings mean equivalent isolation performance. |
| Supply Voltage (VDD1 / VDD2) | 3.0–5.5 V / 3.0–5.5 V | 3.0–5.5 V / 3.0–5.5 V | Defines the operating supply rails on both isolated sides; matching ranges allow drop-in use in the same power architecture. |
| Package | 16-pin SOIC (wide body) | 16-pin SOIC (wide body) | Package and pinout determine PCB footprint compatibility; identical packages enable direct board-level substitution. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Specifies the ambient range over which specifications are guaranteed; matching ranges ensure equivalent environmental robustness. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC3301DWER | AMC3302DWE |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Active |
| Type | Isolated | Isolated |
| Applications | Driver | Driver |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AMC3301DWER and AMC3302DWE?
Both are isolated amplifiers in a 16-pin SOIC (DWE) package with integrated DC/DC converters for isolated power. The AMC3301DWER is a ±250 mV input, precision isolated amplifier optimized for shunt-resistor current sensing, while the AMC3302DWE is a ±50 mV input isolated amplifier designed for lower-voltage shunt sensing with higher gain. The AMC3301DWER is supplied in tape-and-reel (R suffix), whereas the AMC3302DWE is supplied in tube/rail packaging.
Are the AMC3301DWER and AMC3302DWE pin-compatible?
Yes. Both devices are offered in the same 16-pin SOIC (DWE) package with the same pinout, so they are footprint-compatible on a PCB. However, electrical differences in input range and gain must be validated before substituting one for the other in an existing design.
What input voltage ranges do the AMC3301DWER and AMC3302DWE support?
The AMC3301DWER supports a nominal input range of ±250 mV, while the AMC3302DWE supports a nominal input range of ±50 mV. The narrower input range of the AMC3302DWE makes it suitable for lower-voltage shunt sensing, while the AMC3301DWER accommodates larger shunt voltage drops.
Do both devices include an integrated isolated DC/DC converter?
Yes. Both the AMC3301DWER and AMC3302DWE integrate an isolated DC/DC converter that supplies power to the high-side (field-side) circuitry, eliminating the need for a separate isolated power supply in shunt-based current-sensing designs.
What is the reinforced isolation rating of these devices?
Both the AMC3301DWER and AMC3302DWE are designed for reinforced isolation and are qualified to the relevant UL and VDE isolation standards per the manufacturer datasheet. Designers should confirm the specific isolation voltage and certification details in the official datasheet for the target end application.
Which device should be selected for a given shunt-sensing application?
Select the AMC3301DWER when the shunt voltage swing is up to ±250 mV and a wider input range is needed. Select the AMC3302DWE when the shunt voltage is limited to ±50 mV and the higher gain provides better resolution for small signals. The choice depends on shunt resistance, expected current range, and the required signal-to-noise performance.
Do the AMC3301DWER and AMC3302DWE differ in packaging or ordering format?
Both use the 16-pin SOIC (DWE) package. The AMC3301DWER suffix "R" indicates tape-and-reel delivery, while the AMC3302DWE is supplied in standard tube/rail packaging. This affects assembly handling and ordering quantities, not the device footprint.