Texas Instruments AMC0136 Precision Delta-Sigma (ΔΣ) Modulator
Texas Instruments AMC0136 Precision Delta-Sigma (ΔΣ) Modulator has a ±1V, high impedance input, and external clock. The high-impedance input is optimized for connection to high-impedance resistive dividers or other voltage signal sources with high output resistance. The isolation barrier separates parts of the system that operate on different common-mode voltage levels. The isolation barrier supports a working voltage up to 200VRMS/280VDC and transient overvoltages up to 570VRMS/800VDC.
With a small package size and high input impedance, the AMC0136 is designed for high accuracy and isolated voltage sensing in space-constrained applications. The output bitstream of the AMC0136 is synchronized to an external clock. Combined with a sinc3, OSR 256 filter, the device achieves 14.8 effective bits of resolution or 89dB of dynamic range at a sample rate of 39kSPS. The Texas Instruments AMC0136 is available in an 8-pin, 0.65mm pitch VSON package and is fully specified over the temperature range from –40°C to +125°C.
Features
- Enable engineers to create smaller, more precise motor control designs with the following
- High measurement resolution of 12-14 effective number of bits (ENOB)
- Small package size of 3.5mm x 2.7mm
- High CMTI performance of 150 V/ns minimum
- Achieve more precise motor control in a small form factor
- Linear input voltage range of ±1V
- 1GΩ (typ.) high input impedance
- Supply voltage range
- High-side (AVDD): 3.0V to 5.5V
- Low-side (DVDD): 2.7V to 5.5V
- Low DC errors
- Offset error: ±0.9mV (max.)
- Offset drift: 8.5µV/°C (max.)
- Gain error: ±0.25% (max.)
- Gain drift: ±35ppm/°C (max.)
- High CMTI of 150V/ns (min.)
- Missing high-side supply detection
- A low EMI meets CISPR-11 and CISPR-25 standards
- Functional Isolation
- 200VRMS, 280VDC working voltage
- 570VRMS, 800VDC transient overvoltage (60s)
- Safety-related certifications
- DIN EN IEC 60747-17 (VDE 0884-17)
- UL1577
- Fully specified over the extended industrial temperature range of –40°C to +125°C
Applications
- 48V motor drives
- 48V frequency inverters
- Analog input modules
- Power supplies
Additional Resources
Functional Block Diagram
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