PAMC1035D Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments PAMC1035D is a precision delta-sigma modulator ADC featuring a ±1 V bipolar input range and an integrated 2.5 V reference output in a small outline package. It produces offset-binary serial bitstream output for isolation-compatible designs in precision measurement applications. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- PAMC1035D Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Delta-sigma modulation architecture delivering high resolution and low noise for precision analog measurement applications
- ±1 V bipolar input range enabling direct connection to differential sensor outputs without additional level-shift circuitry
- Integrated 2.5 V reference output reducing external component count and minimizing reference noise in isolated measurement chains
- Offset-binary serial bitstream output format compatible with digital isolators and FPGA-based decimation filters
- Small outline package enabling compact high-density PCB integration in energy metering and industrial sensing modules
Applications
The PAMC1035D targets isolated current and voltage sensing in energy metering, motor drive feedback, and industrial power monitoring where a delta-sigma modulator provides high-resolution bitstream data across a digital isolator barrier. Its ±1 V bipolar input range directly interfaces with shunt resistor or current transformer outputs common in smart energy meters and variable-frequency drives. The integrated 2.5 V reference and offset-binary output simplify system design by reducing external components and enabling direct connection to FPGA or DSP decimation filter inputs.
Specifications
| Reach Compliance Code | Unknown |
| Date Of Intro | 2018-09-23 |
| YTEOL | 0 |
| Converter Type | ADC, DELTA-SIGMA |
| Output Bit Code | OFFSET BINARY |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.30 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PAMC1035D:
Frequently Asked Questions
What input voltage range does PAMC1035D accept, and how does this fit shunt-based current sensing designs?
The PAMC1035D accepts a ±1 V bipolar differential input range, which aligns directly with shunt-resistor voltage drops in high-current paths. For example, a 1 mΩ shunt carrying up to 1000 A produces ±1 V full-scale output, allowing the PAMC1035D to capture the full dynamic range without an intermediate amplifier stage, simplifying the analog signal chain in energy metering and motor-drive current sensing applications.
How does the integrated 2.5 V reference output of PAMC1035D benefit isolated measurement system designs?
The integrated 2.5 V reference output of the PAMC1035D eliminates the need for a discrete precision reference IC on the isolated sensor side of the circuit, reducing component count by at least 1 to 2 parts and saving PCB area. In isolated measurement designs, supplying the reference from the same die as the modulator also minimizes reference-induced gain error that could arise from separate reference temperature coefficients, improving overall measurement accuracy across the operating temperature range of −40 °C to 125 °C.
What output format does PAMC1035D use, and how is it decoded by a digital filter?
The PAMC1035D outputs an offset-binary serial bitstream at a high modulator clock frequency, typically in the range of 10 MHz to 20 MHz depending on system configuration. A host FPGA or DSP applies a sinc3 or sinc4 digital decimation filter to the bitstream to produce a multi-bit digital result. The oversampling ratio determines the effective resolution and output data rate; for example, at a 10 MHz modulator clock with a 256× oversampling ratio, the output data rate is approximately 39 kSPS with resolution equivalent to 16 bits or more.
In which precision measurement scenarios does PAMC1035D outperform a successive-approximation ADC?
PAMC1035D's delta-sigma architecture achieves higher noise immunity and resolution at low-to-medium bandwidth compared to a successive-approximation register (SAR) ADC of equivalent bit count. In power quality meters measuring 50 Hz or 60 Hz mains waveforms, the delta-sigma modulator's oversampling and noise shaping push quantization noise out of the 1 kHz measurement band, achieving effective resolution of 16 bits or better from a 1-bit bitstream, while SAR ADCs at 16 bits require careful board layout to avoid sampling clock coupling into the analog input.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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