CS5522-ASZR Cirrus Logic Inc, CS5522-ASZR Datasheet - Page 40

• Manufacturer Part Number: CS5522-ASZR
• Description: IC ADC 24BIT 2CH 20-SSOP
• Manufacturer: Cirrus Logic Inc

Specifications of CS5522-ASZR

• Number Of Bits: 24
• Data Interface: Serial
• Number Of Converters: 1
• Power Dissipation (max): 14.8mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.5
The CS5521/22/23/24/28 devices output 16-bit
(CS5521/23) and 24-bit (CS5522/24/28) data con-
version words. To read a conversion word, the user
must read the conversion data FIFO. The conver-
sion data FIFO is up to 192 bits long and outputs
40
Note: VFS in the table equals the voltage between ground and full scale for any of the unipolar gain ranges, or the
>(VFS-1.5 LSB)
Unipolar Input
VFS/2-0.5 LSB
VFS-1.5 LSB
<(+0.5 LSB)
+0.5 LSB
Voltage
4) Once the CSRs are programmed, repeated conver-
5) The single conversion mode also requires only one
6) The NULL command is used to keep the serial port
voltage between ± full scale for any of the bipolar gain ranges. See text about error flags under overrange
conditions.
Conversion Output Coding
of the configuration register.
sions on up to 16 Setups can be performed by is-
suing only one command byte.
command, but whenever another or a different
single conversion is wanted, this command or a
modified version of it has to be issued again.
in command mode, once it is in command mode.
CS5521/23 16-Bit Output Coding
Binary
Offset
FFFF
FFFF
FFFE
7FFF
8000
0001
0000
0000
------
------
------
Table 6. Output Coding for 16-bit CS5521/23 and 24-bit CS5522/24/28
<(-VFS+0.5 LSB)
>(VFS-1.5 LSB)
-VFS+0.5 LSB
Bipolar Input
VFS-1.5 LSB
-0.5 LSB
Voltage
Complement
Two's
7FFF
7FFE
FFFF
7FFF
0000
8001
8000
8000
------
------
------
>(VFS-1.5 LSB) FFFFFF
the conversions MSB first. The last byte of the con-
version data word (CS5521/23 only) contains data
monitoring flags. The channel indicator (CI) bits
keep track of which physical channel was convert-
ed, and the overrange flag (OF) and the oscillation
detect (OD) bits monitor conversions to determine
if a valid conversion was performed. Refer to the
Conversion Data FIFO Descriptions section for
more details.
The CS5521/22/23/24/28 output data conversions
in binary format when operating in unipolar mode
and in two's complement when operating in bipolar
mode. Refer to the Conversion Data FIFO De-
scriptions section for more details.
Unipolar Input
VFS/2-0.5 LSB
VFS-1.5 LSB
<(+0.5 LSB)
+0.5 LSB
Voltage
CS5522/24/28 24-Bit Output Coding
FFFFFE
FFFFFF
7FFFFF
800000
000001
000000
000000 <(-VFS+0.5 LSB)
Binary
Offset
------
------
------
CS5521/22/23/24/28
>(VFS-1.5 LSB)
-VFS+0.5 LSB
Bipolar Input
VFS-1.5 LSB
-0.5 LSB
Voltage
Complement
7FFFFF
7FFFFF
7FFFFE
FFFFFF
000000
800001
800000
800000
Two's
DS317F8
------
------
------