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ADS8558IPM Arkusz danych(PDF) 1 Page - Texas Instruments |
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ADS8558IPM Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 47 page SARADC String DAC 2.5V/3V REF BUSY/INT RANGE/XCLK HW/SW REF /WR RESET EN STBY CS RD / DB[15:0] WORD/BYTE PAR/SER FS CH_A0 CONVST_A AGND REFC_A REF_IO AVDD BVDD BGND AGND HVDD HVSS Control Logic Config Register I/O SARADC CH_A1 AGND SARADC CH_B0 CONVST_B AGND REFC_B SARADC CH_B1 AGND SARADC CH_C0 CONVST_C AGND REFC_C SARADC CH_C1 AGND Clock Generator 94 92 90 88 86 84 82 80 78 76 74 72 70 -40 -25 -10 5 20 35 50 65 125 Temperature (°C) 80 95 110 ADS8556 ADS8558 ADS8557 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. ADS8556, ADS8557, ADS8558 SBAS404D – OCTOBER 2006 – REVISED FEBRUARY 2016 ADS855x 16-, 14-, 12-Bit, Six-Channel, Simultaneous Sampling Analog-to-Digital Converters 1 1 Features 1 • Family of 16-, 14-, 12-Bit, Pin- and Software-Compatible ADCs • Six SAR ADCs Grouped in Three Pairs • Maximum Data Rate Per Channel with Internal Conversion Clock and Reference: ADS8556: 630 kSPS (PAR) or 450 kSPS (SER) ADS8557: 670 kSPS (PAR) or 470 kSPS (SER) ADS8558: 730 kSPS (PAR) or 500 kSPS (SER) • Maximum Data Rate with External Conversion Clock and Reference: 800 kSPS (PAR) or 530 kSPS (SER) • Pin-Selectable or Programmable Input Voltage Ranges: Up to ±12 V • Excellent Signal-to-Noise Performance: ADS8556: 91.5 dB, ADS8667: 85 dB, ADS8668: 73.9 dB • Programmable and Buffered Internal Reference: 0.5 V to 2.5 V and 0.5 V to 3.0 V • Comprehensive Power-Down Modes: – Deep Power-Down (Standby Mode) – Partial Power-Down – Auto-Nap Power-Down • Selectable Parallel or Serial Interface • Operating Temperature Range: –40°C to 125°C Block Diagram 2 Applications • Power Quality Measurement • Protection Relays • Multi-Axis Motor Control • Programmable Logic Controllers • Industrial Data Acquisition 3 Description The ADS855x contains six low-power, 16-, 14-, or 12- bit, successive approximation register (SAR) based analog-to-digital converters (ADCs) with true bipolar inputs. Each channel contains a sample-and-hold circuit that allows simultaneous high-speed multi- channel signal acquisition. The ADS855x supports data rates of up to 730 kSPS in parallel interface mode or up to 500 kSPS if the serial interface is used. The bus width of the parallel interface can be set to eight or 16 bits. In serial mode, up to three output channels can be activated. The ADS855x is specified over the full industrial temperature range of –40°C to 125°C and is available in an LQFP-64 package. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) ADS8556 LQFP (64) 10.00 mm × 10.00 mm ADS8557 ADS8558 (1) For all available packages, see the orderable addendum at the end of the data sheet. SNR vs Temperature |
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