Cirrus-logic CS5581 Manuel d'utilisateur

Preliminary Product InformationThis document contains information for a new product.Cirrus Logic reserves the right to modify this product without not

CS558110 DS796PP13/25/0814:34 DIGITAL CHARACTERISTICSTA = TMIN to TMAX; VL = 3.3V, ±5% or VL = 2.5V, ±5% or 1.8V, ±5%; VLR = 0V Parameter Symbol Min T

CS5581DS796PP1 113/25/0814:34GUARANTEED LOGIC LEVELSTA=-40to+85°C;V1+=V2+=+2.5V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V, ±5%, 2.5 V, ±5%, or 1.

CS558112 DS796PP13/25/0814:34RECOMMENDED OPERATING CONDITIONS(VLR = 0V, see Note 16)16. The logic supply can be any value VL – VLR = +1.71 to +3.465 v

CS5581DS796PP1 133/25/0814:342. OVERVIEWThe CS5581 is a 16-bit analog-to-digital converter capable of 200 kSps conversion rate. The analog inputaccep

CS558114 DS796PP13/25/0814:34Once a conversion is completed and RDY falls, RDY will return high when all the bits of the data word areemptied from the

CS5581DS796PP1 153/25/0814:343.3 Voltage ReferenceThe voltage reference for the CS5581 can range from 2.4 volt to 4.2 volts. A 4.096 volt reference i

CS558116 DS796PP13/25/0814:343.5 Output Coding FormatThe reference voltage directly defines the input voltage range in both the unipolar and bipolar

CS5581DS796PP1 173/25/0814:343.6 Typical Connection DiagramsThe following figure depicts the CS5581 powered from bipolar analog supplies, +2.5 V and

CS558118 DS796PP13/25/0814:34The following figure depicts the CS5581 part powered from a single 5V analog supply and configured forunipolar measuremen

CS5581DS796PP1 193/25/0814:34The following figure depicts the CS5581 part powered from a single 5V analog supply and configured forbipolar measurement

CS55812 DS796PP13/25/0814:34TABLE OF CONTENTS1. CHARACTERISTICS AND SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CS558120 DS796PP13/25/0814:343.7 AIN & VREF Sampling StructuresThe CS5581 uses on-chip buffers on the AIN and the VREF+ inputs. Buffers provide m

CS5581DS796PP1 213/25/0814:34Figures 11 through 16 illustrate the performance of the CS5581 when driven by a 5.55 kHz sine wave atvarious amplitudes.

CS558122 DS796PP13/25/0814:34Figure 16 illustrates the noise floor of the converter from 0.1 Hz to 100 kHz. While the plot does exhibitsome 1/f noise

CS5581DS796PP1 233/25/0814:343.9 Digital Filter CharacteristicsThe digital filter is designed for fast settling, therefore it exhibits very little in

CS558124 DS796PP13/25/0814:343.10 Serial PortThe serial port on the CS5581 can operate in two different modes: synchronous self clock (SSC) mode &

CS5581DS796PP1 253/25/0814:343.12 Using the CS5581 in Multiplexing ApplicationsThe CS5581 is a delta-sigma A/D converter. Delta-sigma converters use

CS558126 DS796PP13/25/0814:34At the same time the converter is performing a conversion on a channel from one bank of multiplexers,the second multiplex

CS5581DS796PP1 273/25/0814:343.13 Synchronizing Multiple ConvertersMany measurement systems have multiple converters that need to operate synchronous

CS558128 DS796PP13/26/0810:504. PIN DESCRIPTIONS CS – Chip Select, Pin 1The Chip Select pin allows an external device to access the serial port. When

CS5581DS796PP1 293/25/0814:34BP/UP – Bipolar/Unipolar Select, Pin 11The BP/UP pin determines the span and the output coding of the converter. When set

CS5581DS796PP1 33/25/0814:34LIST OF FIGURESFigure 1. SSC Mode - Read Timing, CS remaining low . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CS558130 DS796PP13/25/0814:34SCLK – Serial Clock Input/Output, Pin 23The SMODE pin determines whether the SCLK signal is an input or an output signal.

CS5581DS796PP1 313/25/0814:345. PACKAGE DIMENSIONSNotes: 1.“D” and “E1” are reference datums and do not included mold flash or protrusions, but do i

CS558132 DS796PP13/25/0814:346. ORDERING INFORMATION 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION* MSL (Moisture Sensitivity Level) a

CS55814 DS796PP13/25/0814:341. CHARACTERISTICS AND SPECIFICATIONS• Min / Max characteristics and specifications are guaranteed over the specified oper

CS5581DS796PP1 53/25/0814:34ANALOG CHARACTERISTICS (CONTINUED) TA = -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%; VL -VLR = 3.3 V,

CS55816 DS796PP13/25/0814:34SWITCHING CHARACTERISTICS TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V, ±5%, 2.5 V

CS5581DS796PP1 73/25/0814:34SWITCHING CHARACTERISTICS (CONTINUED) TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V

CS55818 DS796PP13/25/0814:34SWITCHING CHARACTERISTICS (CONTINUED) TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V

CS5581DS796PP1 93/25/0814:34SWITCHING CHARACTERISTICS (CONTINUED) TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V