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CS5525-AS Fiches technique(PDF) 1 Page - Cirrus Logic |
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CS5525-AS Fiches technique(HTML) 1 Page - Cirrus Logic |
1 / 30 page Copyright © Cirrus Logic, Inc. 2005 (All Rights Reserved) http://www.cirrus.com CS5525 CS5526 16-bit/20-bit, Multi-range ADC with 4-bit Latch Features Delta-sigma A/D Converter - Linearity Error: 0.0015%FS - Noise-free Resolution: 18-bits Bipolar/Unipolar Input Ranges - 25 mV, 55 mV, 100 mV, 1 V, 2.5 V and 5 V Chopper Stabilized Instrumentation Amplifier On-chip Charge Pump Drive Circuitry 4-bit Output Latch Simple three-wire serial interface - SPI™ and Microwire™ Compatible - Schmitt Trigger on Serial Clock (SCLK) Programmable Output Word Rates - 3.76 Sps to 202 Sps (XIN = 32.768 kHz) - 11.47 Sps to 616 Sps (XIN = 100 kHz) Output Settles in One Conversion Cycle Simultaneous 50/60 Hz Noise Rejection System and Self-calibration with Read/Write Registers Single +5 V Analog Supply +3.0 V or +5 V Digital Supply Low-power Mode Consumption: 4.9 mW - 1.8 mW in 1 V, 2.5 V, and 5 V Input Ranges General Description The 16-bit CS5525 and the 20-bit CS5526 are highly in- tegrated ∆Σ A/D converters which include an instrumentation amplifier, a PGA (programmable gain amplifier), eight digital filters, and self and system cali- bration circuitry. The converters are designed to provide their own nega- tive supply which enables their on-chip instrumentation amplifiers to measure bipolar ground-referenced signals ≤±100 mV. By directly supplying NBV with -2.5 V and with VA+ at 5 V, ±2.5 V signals (with respect to ground) can be measured. The digital filters provide programmable output update rates between 3.76 Sps to 202 Sps (XIN = 32.768 kHz). Output word rates can be increased by approximately 3X by using XIN = 100 kHz. Each filter is designed to settle to full accuracy for its output update rate in one conver- sion cycle. The filters with word rates of 15 Sps or less (XIN = 32.768 kHz) reject both 50 and 60 Hz (±3 Hz) line interference simultaneously. Low power, single conversion settling time, programma- ble output rates, and the ability to handle negative input signals make these single supply products ideal solu- tions for isolated and non-isolated applications. ORDERING INFORMATION See page 29. AIN+ AIN- + - X20 Programmable Gain VA+ AGND VREF+ VREF- VD+ DGND XIN XOUT SDO SDI NBV A0 A1 A2 A3 Latch Differential Digital Filter Calibration Register Control Register Output Register 4th Order Delta-Sigma Modulator Calibration Memory Calibration µC Clock Gen. SCLK CS CPD AUG ‘05 DS202F5 |
Numéro de pièce similaire - CS5525-AS |
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Description similaire - CS5525-AS |
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