CS5525-ASZ Cirrus Logic Inc, CS5525-ASZ Datasheet - Page 11

• Manufacturer Part Number: CS5525-ASZ
• Description: IC ADC 16BIT W/4BIT LATCH 20SSOP
• Manufacturer: Cirrus Logic Inc

Specifications of CS5525-ASZ

• Number Of Converters: 1
• Package / Case: 20-SSOP
• Number Of Bits: 16
• Data Interface: Serial
• Power Dissipation (max): 12.7mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 1
• Architecture: Delta-Sigma
• Conversion Rate: 3.76 SPs to 616 SPs
• Resolution: 16 bit
• Input Type: Voltage
• Interface Type: Serial (3-Wire)
• Voltage Reference: 2.5 V
• Supply Voltage (max): 5 V
• Supply Voltage (min): 25 mV
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Voltage: 25 mV to 5 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1013 - EVAL BOARD FOR CS5525
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1107-5

Reading/Writing On-Chip Registers
The CS5525/26’s offset, gain, and configuration
registers are read/writable while the conversion
data register is read only.
To perform a read from a specific register, the R/W
bit of the command word must be a logic 1. The SC,
CC, and PS/R bits must be logic 0 and the CB
(MSB) bit must be a logic 1. The register to be writ-
ten is selected with the RSB2-RSB0 bits of the
command word.
To perform a write to a specific register, the R/W
bit of the command word must be a logic 0. The SC,
DS202F5
Command Register
D7
D6
D5
D4
D3-D1
D0
D7(MSB)
CB
BIT
Command Bit, CB
Single Conversion, SC
Continuous Conversions,
CC
Read/Write, R/W
Register Select Bit,
RSB2-RSB0
Power Save/Run, PS/R
SC
D6
NAME
CC
D5
R/W
D4
VALUE
RSB2
000
001
010
100
101
Table 1. Command Set
011
110
111
D3
0
1
0
1
0
1
0
1
0
1
RSB1
D2
Null command (no operation). All command bits, including
CB must be 0.
Logic 1 for executable commands.
Single Conversion not active.
Perform a conversion.
Continuous Conversions not active.
Perform conversions continuously.
Write to selected register.
Read from selected register.
Offset Register
Gain Register
Configuration Register
Conversion Data Register (read only)
Set-up Registers (Offset, Gain, Configuration)
Reserved
Reserved
Reserved
Run
Power Save
CC, and PS/R bits must be logic 0 and the CB (MSB)
bit must be a logic 1. The register to be written is se-
lected with the RSB2-RSB0 bits of the command
word. Figure 6 illustrates the serial sequence neces-
sary to write to, or read from the serial port.
If the Set-up Registers are chosen with the RSB2-
RSB0 bits, the registers are read or written in the
following sequence: Offset, Gain and Configura-
tion. This is accomplished by following one 8-bit
command word with three 24-bit data words for a
total of 72 data bits.
RSB0
D1
PS/R
D0
FUNCTION
CS5525 CS5526
11