CS5550-ISZ Cirrus Logic Inc, CS5550-ISZ Datasheet - Page 2

• Manufacturer Part Number: CS5550-ISZ
• Description: IC ADC 2CH LOW-COST 24SSOP
• Manufacturer: Cirrus Logic Inc

Specifications of CS5550-ISZ

• Number Of Converters: 2
• Package / Case: 24-SSOP
• Number Of Bits: 2
• Sampling Rate (per Second): 4k
• Data Interface: Serial
• Power Dissipation (max): 30mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 2
• Architecture: Delta-Sigma
• Conversion Rate: 4 KSPs
• Resolution: 24 bit
• Input Type: Voltage
• Interface Type: Serial (3-Wire)
• Voltage Reference: 2.5 V
• Supply Voltage (max): 5 V
• Supply Voltage (min): 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Voltage: 3.3 V to 5 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 598-1119-5

TABLE OF CONTENTS
2
1. PIN DESCRIPTION ................................................................................................................... 4
2. CHARACTERISTICS/SPECIFICATIONS ................................................................................. 5
3. FUNCTIONAL DESCRIPTION ............................................................................................... 11
4. SERIAL PORT OVERVIEW .................................................................................................... 15
5. REGISTER DESCRIPTION .................................................................................................... 20
6. PACKAGE DIMENSIONS ....................................................................................................... 24
ANALOG CHARACTERISTICS ................................................................................................ 5
VOLTAGE REFERENCE.......................................................................................................... 6
5 V DIGITAL CHARACTERISTICS........................................................................................... 7
3 V DIGITAL CHARACTERISTICS........................................................................................... 7
RECOMMENDED OPERATING CONDITIONS ....................................................................... 7
SWITCHING CHARACTERISTICS .......................................................................................... 8
2.1 Theory of Operation ......................................................................................................... 10
2.2 Performing Measurements ............................................................................................... 10
2.3 CS5550 Linearity Performance ........................................................................................ 10
3.1 Analog Inputs ................................................................................................................... 11
3.2 Voltage Reference ........................................................................................................... 11
3.3 Oscillator Characteristics ................................................................................................. 11
3.4 Calibration ........................................................................................................................ 12
3.5 Interrupt ........................................................................................................................... 13
3.6 PCB Layout ...................................................................................................................... 14
4.1 Commands ....................................................................................................................... 15
4.2 Serial Port Interface ......................................................................................................... 18
4.3 Serial Read and Write ...................................................................................................... 18
4.4 System Initialization ......................................................................................................... 18
4.5 Serial Port Initialization .................................................................................................... 19
4.6 CS5550 Power States ...................................................................................................... 19
5.1 Configuration Register ...................................................................................................... 20
5.2 Offset Registers ................................................................................................................ 21
5.3 Gain Registers .................................................................................................................. 21
5.4 Cycle Count Register ........................................................................................................ 21
5.5 OUT1 and OUT2 Output Registers................................................................................... 22
5.6 FILT1, FILT2 Unsigned Output Register........................................................................... 22
5.7 Status Register and Mask Register .................................................................................. 22
5.8 Control Register ................................................................................................................ 23
2.1.1 High-Rate Digital Low-Pass Filters ..................................................................... 10
2.1.2 Digital Compensation Filters ............................................................................... 10
2.1.3 Gain and Offset Adjustment ................................................................................ 10
3.4.1 Overview of Calibration Process ......................................................................... 12
3.4.2 Calibration Sequence .......................................................................................... 12
3.4.3 Calibration Signal Input Level ............................................................................. 12
3.4.4 Input Configurations for Calibrations ................................................................... 12
3.4.5 Description of Calibration Algorithms .................................................................. 12
3.4.6 Duration of Calibration Sequence ....................................................................... 13
3.5.1 Typical use of the INT pin ................................................................................... 13
3.5.2 INT Active State .................................................................................................. 13
4.3.1 Register Write ..................................................................................................... 18
4.3.2 Register Read ..................................................................................................... 18
3.4.5.1 Offset Calibration Sequence ............................................................... 12
3.4.5.2 Gain Calibration Sequence ................................................................. 13
CS5550
DS630F1