Novinka:Microchip - AD prevodník MCP3901
(Kategória: Semiconductor-ZONE)
Zaslal Kiwwicek
30.09.2009-08:13

Microchip predstavil, dvojkanálový analog front end s dvomi synchrónne vzorkujúcimi sigma - delta A/D prevodníkmi, kompenzáciou fázového oneskorenia, integrovanou napäťovou referenciou, dvomi PGA (Programable Gain Amplifier) a 20MHz sériovým rozhraním SPI.

Vlastnosti

• Two synchronous sampling 16/24-bit resolution
  Delta-Sigma A/D Converters with proprietary
  multi-bit architecture

• 91 dB SINAD, -104 dBc THD (up to 35th harmonic),
  109 dB SFDR for each channel

• Programmable data rate up to 64 ksps

• Ultra low power shutdown mode with <2 μA

• -133 dB Crosstalk between the two channels

• Low Drift Internal Voltage Reference: 12 ppm/°C

• Differential Voltage Reference Input Pins

• High Gain PGA on each channel (up to 32 V/V)

• Phase Delay Compensation between the two
  channels with 1 μs time resolution

• Separate Modulator outputs for each channel

• High-Speed Addressable 20 MHz SPI Interface
  with Mode 0,0 and 1,1 Compatibility

• Independent analog and digital power supplies 4.5V-5.5V AVDD, 2.7V-5.5V DVDD

• Low Power consumption (14 mW typical at 5V)

• Available in small 20-lead QFN and SSOP
  packages

• Industrial Temperature Range -40°C to +85°C

Oblasti využitia

• Energy Metering & Power Measurement

• Automotive

• Portable Instrumentation

• Medical and Power Monitoring

datasheet

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