Part A
AMC1301DWVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 6629 PCS
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Not a drop-in replacement
The AMC1306M25DWVR and AMC1301DWVR are both isolated delta-sigma modulators in the same SOIC-8 package, but they differ fundamentally in output interface, input voltage range, and isolation performance. The AMC1306M25DWVR provides a single-bit Manchester-encoded bitstream output, while the AMC1301DWVR delivers a differential analog output, so the two devices are not functionally interchangeable without a redesign of the downstream signal chain.
Different output type
Different input voltage range
Different isolation rating
Different clocking requirement
Parts at a glance
Part B
AMC1306M25DWVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 4162 PCS
- Package
- SOIC-8
- Series
- Data Acquisition - ADCs-DACs - 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 | AMC1306M25DWVR | AMC1301DWVR | Why it matters |
|---|---|---|---|
| Input Type | Current shunt (isolated delta-sigma modulator) | Voltage input (isolated amplifier) | Determines whether the device measures current via a shunt or amplifies a voltage signal; these are not functionally interchangeable. |
| Output Format | 1-bit digital bitstream (delta-sigma) | Differential analog voltage | A digital bitstream requires an external digital filter/SINC filter, while an analog output feeds an ADC directly; the downstream signal chain differs fundamentally. |
| Isolation Rating | 5000 V RMS (reinforced) | 5000 V RMS (reinforced) | Both provide reinforced isolation suitable for high-voltage measurement, but confirming the rating ensures safety compliance in the target system. |
| Input Voltage Range | ±250 mV (shunt input) | ±250 mV (with ±320 mV linear range) | Defines the maximum measurable signal swing; the AMC1301 offers slightly wider linear range for voltage sensing applications. |
| Gain | Fixed (modulator, no analog gain) | 8 V/V (fixed) | The AMC1301 provides a fixed analog gain of 8, while the AMC1306 outputs a digital stream whose effective gain is set by the external filter. |
| Supply Voltage | 3.0 V to 5.5 V (both sides) | 3.0 V to 5.5 V (both sides) | Compatible supply ranges simplify power design, but the isolated side requirements must still be verified for each device. |
| Package | 8-pin SOIC (DW) | 8-pin SOIC (DW) | Identical package footprint allows drop-in board layout compatibility, though pin functions differ. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Both support industrial temperature ranges, ensuring reliability in harsh environments. |
| Bandwidth | Up to 20 MHz clock (modulator) | 1 MHz (typical) | The modulator's bandwidth is set by the clock and digital filter, while the amplifier has a fixed analog bandwidth; this affects achievable measurement speed. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1301DWVR | AMC1306M25DWVR |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | Isolation | - |
| Number of Circuits | 1 | - |
| Gain Bandwidth Product | 1 MHz | - |
| Current - Input Bias | 60 µA | - |
| Voltage - Input Offset | 50 µV | - |
| Supply Current | 5.9mA | - |
| Current - Output / Channel | 13 mA | - |
| Voltage - Supply Span(Min) | 3 V | - |
| Voltage - Supply Span(Max) | 5.5 V | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Type | - | Isolated Module |
| Number of Channels | - | 1 |
| Resolution(Bits) | - | 16 b |
| Sampling Rate(Per Second) | - | 78k |
| Data Interface | - | CMOS, Serial |
| Voltage Supply Source | - | Analog and Digital |
| Voltage - Supply | - | 2.7V ~ 5.5V |
Frequently asked questions
What are the primary functional differences between the AMC1306M25DWVR and the AMC1301DWVR?
The AMC1306M25DWVR is a single-channel, isolated delta-sigma modulator with a ±250 mV input range and a fixed 20 MHz clock, designed for direct shunt-resistor current sensing. The AMC1301DWVR is an isolated precision amplifier with a ±250 mV input range and a fixed gain of 8.33, providing a differential analog output. The AMC1306M25DWVR outputs a 1-bit digital bitstream, while the AMC1301DWVR outputs an analog voltage, so they serve different signal-chain architectures.
Are the AMC1306M25DWVR and AMC1301DWVR pin-to-pin compatible?
No. Both devices are offered in the same 8-pin SOIC (DWV) package, but their pin functions differ. The AMC1306M25DWVR provides a digital data output (DOUT) and clock input (CLKIN), whereas the AMC1301DWVR provides analog output pins (VOUTP, VOUTN). Therefore, they cannot be dropped into the same PCB footprint without redesigning the output interface and associated circuitry.
Do both devices provide reinforced isolation suitable for high-voltage industrial applications?
Yes. Both the AMC1306M25DWVR and the AMC1301DWVR are specified with reinforced isolation rated at 5 kV RMS per UL 1577 and provide a working voltage of 1.5 kV DC per VDE V 0884-11 (VDE 0884-11). This makes both suitable for isolated current and voltage sensing in motor drives, inverters, and other high-voltage industrial systems.
What is the input voltage range and gain configuration of each device?
Both devices feature a ±250 mV linear input range intended for shunt-resistor sensing. The AMC1306M25DWVR digitizes this input directly with its internal delta-sigma modulator. The AMC1301DWVR amplifies the ±250 mV input by a fixed gain of 8.33 to produce a differential output of approximately ±2.08 V, which is typically fed to an external ADC or controller.
How do the output interfaces differ, and what downstream components are required?
The AMC1306M25DWVR outputs a 1-bit delta-sigma bitstream at a 20 MHz clock rate, requiring an external digital filter (such as an FPGA, DSP, or dedicated Sinc filter) to reconstruct the sampled signal. The AMC1301DWVR outputs a differential analog voltage that can be connected directly to an ADC or amplifier input, simplifying the signal chain but requiring an external ADC for digital processing.
Can the AMC1306M25DWVR and AMC1301DWVR be used interchangeably in an existing design?
No. Because one device outputs a digital bitstream and the other outputs an analog voltage, and because their pin functions differ within the same package, they are not interchangeable. A design migration requires changes to the PCB layout, the output signal path, and the system's digital filtering or ADC circuitry, along with full validation against the manufacturer datasheets.
What are the typical applications for each device?
The AMC1306M25DWVR is typically used in isolated current sensing for motor drives, servo drives, and inverters where a digital bitstream is processed by an FPGA or DSP. The AMC1301DWVR is typically used in isolated current and voltage sensing where a differential analog output is preferred, such as in industrial motor control, power inverters, and battery management systems feeding an external ADC.