Cirrus-logic CS5451A User Manual Page 1

Copyright  Cirrus Logic, Inc. 2011(All Rights Reserved)http://www.cirrus.comCS5451ASix-channel, Delta-sigma Analog-to-digital ConverterFeatures• Sync

CS5451A10 DS635F4When data is not being transferred SCLK is held low.(see Figure 3.) The framing signal (FSO) output is normally low. FSOgoes high, wi

CS5451ADS635F4 11shifting of the analog inputs. The CPD pin and capacitorC1 provide the necessary analog supply current asshown in Figure 5. The Schot

CS5451A12 DS635F45. PACKAGE DIMENSIONSNotes: 1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do include mold

CS5451ADS635F4 136. ORDERING INFORMATION 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION* MSL (Moisture Sensitivity Level) as specified by

CS5451A14 DS635F48. REVISION HISTORY Revision Date ChangesA1 JUL 2003 Initial ReleasePP1 OCT 2003 Initial release for Preliminary Product InformationF

CS5451A2 DS635F4TABLE OF CONTENTS1. PIN DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CS5451ADS635F4 31. PIN DESCRIPTIONClock GeneratorMaster Clock Input 25XIN - External clock signal or oscillator input.Control Pins and Serial Data I/O

CS5451A4 DS635F42. CHARACTERISTICS AND SPECIFICATIONSRECOMMENDED OPERATING CONDITIONS ANALOG CHARACTERISTICS • Min/Max characteristics and specifica

CS5451ADS635F4 5ANALOG CHARACTERISTICS (continued)Notes:1. Specifications for Gain = 20 apply only to Current Channels. Voltage Channels are fixed to

CS5451A6 DS635F4SWITCHING CHARACTERISTICS • Min/Max characteristics and specifications are guaranteed over all Operating Conditions.• Typical characte

CS5451ADS635F4 7ABSOLUTE MAXIMUM RATINGS WARNING: Operation at or beyond these limits may result in permanent damage to the device.Normal operation is

CS5451A8 DS635F43. THEORY OF OPERATIONThe CS5451A is a six-channel analog-to-digital convert-er (ADC) followed by a serial interface that allows com-m

CS5451ADS635F4 94. FUNCTIONAL DESCRIPTION 4.1 Analog InputsThe CS5451A is equipped with six fully differential inputchannels. The inputs VIN(1-3) and