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Cirrus Logic

CS5529 Datasheet Preview

CS5529 Datasheet

16-BIT PROGRAMMABLE ADC

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CS5529
16-bit, Programmable ∆Σ ADC with 6-bit Latch
Features
General Description
z Delta-sigma Analog-to-digital Converter
- Linearity Error: 0.0015%FS
- Noise-free Resolution: 16-Bits
z 2.5 V Bipolar/Unipolar Buffered Input Range
z 6-bit Output Latch
z Eight Digital Filters
- Selectable Output Word Rates
- Output Settles in One Conversion Cycle
- 50/60 Hz ±3 Hz Simultaneous Rejection
z Simple Three-wire Serial Interface
- SPI™ and Microwire™ Compatible
- Schmitt Trigger on Serial Clock (SCLK)
z System/Self-calibration with R/W Registers
z Power Supply Configurations
- VA+ = +5 V; VA- = 0 V; VD+ = +3 V to +5 V
- VA+ = +2.5 V; VA- = -2.5 V; VD+ = +3 V to +5 V
- VA+ = +3.0 V; VA- = -3.0 V; VD+ = +3.0 V
z Low Power Consumption: 2.6 mW
The 16-bit CS5529 is a low-power, programmable ∆Σ
ADC (Analog-to-Digital Converter), which includes
coarse/fine charge buffers, a fourth-order ∆Σ modulator,
a calibration microcontroller, a digital filter with program-
mable decimation rates, a 6-bit output latch, and a three-
wire serial interface. The ADC is designed to operate
from single or dual analog supplies and a single digital
supply.
The digital filter is programmable with output update
rates between 1.88 Hz to 101 Sps. These output rates
are specified for XIN = 32.768 kHz. Output word rates
can be increased by approximately 3X by using XIN =
100 kHz. The filter is designed to settle to full accuracy
for the selected output word rate in one conversion.
When operated at word rates of 15 Sps or less, the filter
rejects both 50 Hz and 60 Hz simultaneously.
Low power, single conversion settling time, programma-
ble output rates, and the ability to handle negative input
signals make this single- or dual-supply product an ideal
solution for isolated and non-isolated applications.
ORDERING INFORMATION
See page 29.
AIN+
AIN-
VREF+
VREF-
VA+ VA-
1X
1X
Differential
4th Order
Delta-Sigma
Modulator
Latch
A0 A1 D0 D1 D2 D3
Calibration
Memory
DGND
VD+
Digital Filter
Calibration
Register
Calibration µC
Clock
Gen.
Control
Register
Output
Register
XIN XOUT
CS
SCLK
SDI
SDO
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG ‘05
DS246F5
1




Cirrus Logic

CS5529 Datasheet Preview

CS5529 Datasheet

16-BIT PROGRAMMABLE ADC

No Preview Available !

CS5529
TABLE OF CONTENTS
CHARACTERISTICS & SPECIFICATIONS ........................................................ 4
ANALOG CHARACTERISTICS................................................................... 4
ANALOG CHARACTERISTICS................................................................... 5
5V DIGITAL CHARACTERISTICS .............................................................. 6
3 V DIGITAL CHARACTERISTICS ............................................................. 6
DYNAMIC CHARACTERISTICS ................................................................. 6
ABSOLUTE MAXIMUM RATINGS .............................................................. 7
SWITCHING CHARACTERISTICS ............................................................. 8
GENERAL DESCRIPTION ................................................................................ 10
Analog Input ............................................................................................. 10
Analog Input Model ............................................................................ 10
Voltage Reference Input Model .......................................................... 10
Serial Port ................................................................................................. 11
Command Register Descriptions ........................................................ 12
Serial Port Interface ........................................................................... 13
Serial Port Initialization ....................................................................... 15
System Initialization ........................................................................... 15
Configuration Register .............................................................................. 15
Latch Output Pins ............................................................................... 15
Power Consumption ........................................................................... 15
Output Word Rate .............................................................................. 16
Digital Filter ........................................................................................ 16
Clock Generator ................................................................................. 16
Reset System ..................................................................................... 16
Port Flag ............................................................................................. 17
Calibration .......................................................................................... 17
Calibration Registers ................................................................... 17
Offset Register ...................................................................... 17
Gain Register ........................................................................ 18
Self Calibration ............................................................................ 18
System Calibration ....................................................................... 18
Limitations in Calibration Range .................................................. 19
Calibration Tips ............................................................................ 19
Configuration Register Descriptions ................................................. 20
Performing Conversions ........................................................................... 21
Performing Conversions with PF bit = 0 ............................................. 21
Performing Conversions with PF bit = 1 ............................................. 21
Single Conversion ........................................................................ 21
Continuous Conversions .............................................................. 21
Output Coding .................................................................................... 22
............................................................................................................ 22
Power Supply Arrangements .................................................................... 23
Getting Started ......................................................................................... 25
PCB Layout .............................................................................................. 25
PIN DESCRIPTIONS ......................................................................................... 26
SPECIFICATION DEFINITIONS ........................................................................ 28
ORDERING INFORMATION .............................................................................. 29
ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION ...... 29
PACKAGE DIMENSIONS ................................................................................. 30
2 DS246F5


Part Number CS5529
Description 16-BIT PROGRAMMABLE ADC
Maker Cirrus Logic
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CS5529 Datasheet PDF






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