Cirrus-logic CS5571 Manual de usuario

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

CS557110 DS768PP13/25/0810:56 DIGITAL CHARACTERISTICSTA = TMIN to TMAX; VL = 3.3V, ±5% or VL = 2.5V, ±5% or 1.8V, ±5%; VLR = 0V Parameter Symbol Min T

CS5571DS768PP1 113/25/0810:56GUARANTEED 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.

CS557112 DS768PP13/25/0810:56RECOMMENDED OPERATING CONDITIONS(VLR = 0V, see Note 17)17. The logic supply can be any value VL – VLR = +1.71 to +3.465 v

CS5571DS768PP1 133/25/0810:562. OVERVIEWThe CS5571 is a 16-bit analog-to-digital converter capable of 100 kSps conversion rate. The analog inputaccep

CS557114 DS768PP13/25/0810:56Once a conversion is completed and RDY falls, RDY will return high when all the bits of the data word areemptied from the

CS5571DS768PP1 153/25/0810:563.3 Voltage ReferenceThe voltage reference for the CS5571 can range from 2.4 volt to 4.2 volts. A 4.096 volt reference i

CS557116 DS768PP13/25/0810:563.5 Output Coding FormatThe reference voltage directly defines the input voltage range in both the unipolar and bipolar

CS5571DS768PP1 173/25/0810:563.6 Typical Connection DiagramsThe following figure depicts the CS5571 powered from bipolar analog supplies, +2.5 V and

CS557118 DS768PP13/25/0810:56The following figure depicts the CS5571 part powered from a single 5V analog supply and configured forunipolar measuremen

CS5571DS768PP1 193/25/0810:56The following figure depicts the CS5571 part powered from a single 5V analog supply and configured forbipolar measurement

CS55712 DS768PP13/25/0810:56TABLE OF CONTENTS1. CHARACTERISTICS AND SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CS557120 DS768PP13/25/0810:563.7 AIN & VREF Sampling StructuresThe CS5571 uses on-chip buffers on the AIN and VREF+ inputs. Buffers provide much

CS5571DS768PP1 213/25/0810:56Figures 11, 12, and 13 indicate the spectral performance of the CS5571 with a 0 dB, -6 dB and - 12 dB5.55 kHz input signa

CS557122 DS768PP13/25/0810:56Figures 14 and 15 illustrate the small signal performance of the CS5571 with a 5.55 kHz signal at -80 dBdown. Figure 14

CS5571DS768PP1 233/25/0810:56 Figure 18 illustrates a test signal of 5.55 kHz, 116.3 dB down, which is only 6.3 microvolts peak to peak,or about 1/10

CS557124 DS768PP13/25/0810:56Figure 20 illustrates a noise histogram of 4096 samples with the input signal adjusted to almost the exactcenter of a cod

CS5571DS768PP1 253/25/0810:563.10 Digital Filter CharacteristicsThe digital filter is designed for fast settling, therefore it exhibits very little i

CS557126 DS768PP13/25/0810:563.11 Serial PortThe serial port on the CS5571 can operate in two different modes: synchronous self clock (SSC) mode &

CS5571DS768PP1 273/25/0810:563.13 Using the CS5571 in Multiplexing ApplicationsThe CS5571 is a delta-sigma A/D converter. Delta-sigma converters use

CS557128 DS768PP13/25/0810:56At the same time the converter is performing a conversion on a channel from one bank of multiplexers,the second multiplex

CS5571DS768PP1 293/25/0810:563.14 Synchronizing Multiple ConvertersMany measurement systems have multiple converters that need to operate synchronous

CS5571DS768PP1 33/25/0810:56LIST OF FIGURESFigure 1. SSC Mode - Read Timing, CS remaining low . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CS557130 DS768PP13/26/0814:224. PIN DESCRIPTIONS CS – Chip Select, Pin 1The Chip Select pin allows an external device to access the serial port. When

CS5571DS768PP1 313/25/0810:56BP/UP – Bipolar/Unipolar Select, Pin 11The BP/UP pin determines the span and the output coding of the converter. When set

CS557132 DS768PP13/25/0810:56SCLK – Serial Clock Input/Output, Pin 23The SMODE pin determines whether the SCLK signal is an input or an output signal.

CS5571DS768PP1 333/25/0810:565. PACKAGE DIMENSIONSNotes: 1.“D” and “E1” are reference datums and do not included mold flash or protrusions, but do i

CS557134 DS768PP13/25/0810:566. ORDERING INFORMATION 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION* MSL (Moisture Sensitivity Level) a

CS55714 DS768PP13/25/0810:561. CHARACTERISTICS AND SPECIFICATIONS• Min / Max characteristics and specifications are guaranteed over the specified oper

CS5571DS768PP1 53/25/0810:56ANALOG CHARACTERISTICS (CONTINUED) TA = -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%; VL -VLR = 3.3 V,

CS55716 DS768PP13/25/0810:56SWITCHING 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

CS5571DS768PP1 73/25/0810:56SWITCHING CHARACTERISTICS (CONTINUED) TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V

CS55718 DS768PP13/25/0810:56SWITCHING CHARACTERISTICS (CONTINUED) TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V

CS5571DS768PP1 93/25/0810:56SWITCHING CHARACTERISTICS (CONTINUED) TA= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;VL - VLR = 3.3 V