Part A
AMC1311DWV
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 6795 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Special Purpose
Replacement verdict
Compatible functional replacement candidate
The AMC1336DWVR and AMC1311DWV share the same isolated delta-sigma modulator architecture, SOIC-8 (DWV) package, and 5.0 V supply rail, making them viable functional replacement candidates in isolated voltage-sensing designs. However, the AMC1336DWVR offers a wider input range and higher input impedance, while the AMC1311DWV provides a fixed ±1 V input range with a matched differential output. Designers must validate input scaling, output filter requirements, and safety-certification margins before substituting one for the other in a qualified design.
Package Type
High match
Input Voltage Range
Validation required
Output Type
High match
Isolation Rating
Validation required
Parts at a glance
Part B
AMC1336DWVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 5075 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 | AMC1336DWVR | AMC1311DWV | Why it matters |
|---|---|---|---|
| Input Type | Voltage input (isolated delta-sigma modulator) | Voltage input (isolated amplifier) | The AMC1336 is a modulator that outputs a bitstream, while the AMC1311 is a linear amplifier with an analog output; they are not functionally interchangeable without different downstream circuitry. |
| Output Format | 1-bit delta-sigma bitstream | Differential analog voltage | A digital bitstream requires a digital filter/decoder, whereas an analog output can drive an ADC directly; this fundamentally changes the system architecture. |
| Input Voltage Range | ±1 V (with ±50 mV linear range option) | ±1 V (2 V full-scale) | Matching the input range to the sensed signal ensures full-scale utilization and accuracy; differing ranges affect scaling and signal conditioning. |
| Isolation Rating | 5 kV RMS (reinforced) | 5 kV RMS (reinforced) | Both provide reinforced isolation suitable for high-voltage sensing, so safety isolation capability is equivalent. |
| Supply Voltage | 3.0 V to 5.5 V (both sides) | 3.0 V to 5.5 V (both sides) | Compatible supply ranges allow similar power rail design, easing substitution at the power level. |
| Package | 8-pin SOIC (DWV) | 8-pin SOIC (DWV) | Identical package and pinout simplify PCB layout reuse, though pin functions differ between modulator and amplifier. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Equivalent industrial temperature range supports use in the same harsh environments. |
| Function Category | Isolated delta-sigma modulator | Isolated amplifier | The core function differs, so they serve different roles in a signal chain and are not drop-in substitutes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1311DWV | AMC1336DWVR |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolation | Sigma-Delta Modulator |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Channels | - | 1 |
| Resolution(Bits) | - | 16 b |
| Sampling Rate(Per Second) | - | 82k |
| Data Interface | - | Serial |
| Voltage Supply Source | - | Analog and Digital |
| Voltage - Supply | - | 3V ~ 5.5V, 2.7V ~ 5.5V |
| Operating Temperature | - | -40°C ~ 125°C (TA) |
Frequently asked questions
What are the primary functional differences between the AMC1336DWVR and the AMC1311DWV?
The AMC1336DWVR is a precision, isolated delta-sigma modulator designed for current sensing and voltage sensing applications, outputting a 1-bit bitstream. The AMC1311DWV is an isolated amplifier with a fixed gain of 1 and a differential output, designed specifically for voltage sensing. The AMC1336 provides a modulated digital output, while the AMC1311 provides an analog differential output.
Are the AMC1336DWVR and AMC1311DWV pin-to-pin compatible?
Yes, both devices are offered in the same 8-pin SOIC (DWV) package with identical pinout assignments for the primary supply, isolated supply, input, and output pins. However, the output signal type differs (bitstream vs. analog differential), so the receiving circuitry must be designed accordingly.
What is the input voltage range for the AMC1311DWV compared to the AMC1336DWVR?
The AMC1311DWV features a high-impedance input optimized for voltage sensing with a linear input range of ±1 V (differential) and a nominal gain of 1. The AMC1336DWVR has a specified input voltage range of ±50 mV (differential) for current sensing applications, making it suitable for shunt resistor-based measurements.
Do both devices provide reinforced isolation?
Yes, both the AMC1336DWVR and AMC1311DWV are reinforced isolated devices rated for a maximum isolation voltage of 5 kVRMS per UL 1577 and a working voltage of 1.5 kVRMS per VDE V 0884-11, making them suitable for high-voltage industrial applications requiring reinforced isolation.
What are the typical applications for each device?
The AMC1336DWVR is typically used for isolated current sensing in motor drives, inverters, and power supplies where a shunt resistor is employed. The AMC1311DWV is typically used for isolated voltage sensing in DC-link voltage monitoring, battery management systems, and isolated voltage measurement circuits.
What is the output interface of each device?
The AMC1336DWVR outputs a 1-bit delta-sigma modulated bitstream on a single data line, which must be processed by a digital filter (e.g., in an FPGA or MCU) to reconstruct the analog value. The AMC1311DWV outputs a differential analog voltage with a fixed gain of 1, which can be directly connected to an ADC or differential amplifier.
Can the AMC1336DWVR and AMC1311DWV be used interchangeably in an existing design?
No, they cannot be used interchangeably without redesigning the signal chain. The AMC1336DWVR requires a digital filter to decode the bitstream, while the AMC1311DWV requires an ADC to digitize the analog differential output. Additionally, their input ranges differ significantly (±50 mV vs. ±1 V), so the sensing element and front-end circuitry must be matched to the selected device.