ACPL-C797-500E by Broadcom | OptoCoupler | Avnet ASIA
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ACPL-C797-500E

Broadcom

OptoCoupler 8-Pin SO T/R

Manufacturer Part #: ACPL-C797-500E

Alternate Part #: ACPL-C797-500E


legend RoHS Compliant

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Information

The ACPL-C797 is a 1-bit, second-order sigma-delta (Σ-∆) modulator converts an analog input signal into a highspeed data stream with galvanic isolation based on optical coupling technology. The ACPL-C797 operates from a 5 V power supply with dynamic range of 80 dB with an appropriate digital filter. The differential inputs of ±200 mV (full scale ±320 mV) are ideal for direct connection to shunt resistors or other low-level signal sources in applications such as motor phase current measurement. .The analog input is continuously sampled by a means of sigma-delta over-sampling using an on-board clock. The signal information is contained in the modulator data, as a density of ones with data rate of 10 MHz, and the data are encoded and transmitted across the isolation boundary where they are recovered and decoded into high-speed data stream of digital ones and zeros. The original signal information can be reconstructed with a digital filter. The serial interface for data and clock has a wide supply range of 3 V to 5.5 V.Combined with superior optical coupling technology, the modulator delivers high noise margins and excellent immunity against isolation-mode transients. With 0.5 mm minimum distance through insulation (DTI), the ACPL-C797 provides reliable reinforced insulation and high working insulation voltage, which is suitable for fail-safe designs. This outstanding isolation performance is superior to alternatives including devices based on capacitive- or magnetic-coupling with DTI in micro-meter range. Offered in a Stretched SO-8 (SSO-8) package, the isolated ADC delivers the reliability, small size, superior isolation and over-temperature performance motor drive designers need to accurately measure current at much lower price compared to traditional current transducers.

Key Features

  • Superior Optical Isolation and Insulation
  • 10 MHz internal clock
  • 1-bit, second-order sigma-delta modulator
  • 16 bits resolution no missing codes (12 bits ENOB)
  • 78 dB SNR
  • 3.5µV/°C maximum offset drift
  • ±1% gain error
  • Internal reference voltage
  • ±200 mV linear range with single 5 V supply (±320 mV full scale)
  • 3 V to 5.5 V wide supply range for digital interface
  • -40°C to +105°C operating temperature range
  • SSO-8 package
  • 25 kV/µs common-mode transient immunity
  • Safety and regulatory approval:
    • IEC/EN/DIN EN 60747-5-5: 1414 Vpeak working insulation voltage
    • UL 1577: 5000 Vrms/1min isolation voltage
    • CSA: Component

Technical Attributes

Description
Value
Find similar Parts
Mounting
Surface Mount
Operating Temperature
-40 to 105 °C
Lead Finish
Matte Tin
Max Processing Temp
260
Operating Supply Voltage
4.5 to 5.5 V
Minimum Isolation Voltage
5000 V

ECCN / UNSPSC

Description
Value
ECCN:
EAR99
SCHEDULE B:
8541408000}
HTSN:
8541408000}
UNSPSC:
32111700
UNSPSC VERSION:
V15.1101
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