CS5531-ASZ Cirrus Logic Inc, CS5531-ASZ Datasheet - Page 37

• Manufacturer Part Number: CS5531-ASZ
• Description: IC ADC 16BIT 2CH W/LNA 20SSOP
• Manufacturer: Cirrus Logic Inc

Specifications of CS5531-ASZ

• Number Of Converters: 1
• Package / Case: 20-SSOP
• Number Of Bits: 16
• Sampling Rate (per Second): 3.84k
• Data Interface: Serial
• Power Dissipation (max): 45mW
• Voltage Supply Source: Analog and Digital, Dual ±
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 4
• Architecture: Delta-Sigma
• Conversion Rate: 6.25 SPs to 3840 SPs
• Resolution: 16 bit
• Input Type: Voltage
• Interface Type: Serial (3-Wire)
• Voltage Reference: 2.5 V
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 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: 598-1111-5

2.8.1. Conversion Data Output Descriptions
CS5531/33 (16-BIT CONVERSIONS)
CS5532/34 (24-BIT CONVERSIONS)
DS289F5
D31(MSB) D30
D31(MSB) D30
>(VFS-1.5 LSB)
Unipolar Input
VFS/2-0.5 LSB
Table 4. Output Coding for 16-bit CS5531 and CS5533
VFS-1.5 LSB
<(+0.5 LSB)
MSB
MSB
D15
D15
+0.5 LSB
Voltage
0
7
Conversion Data Bits [31:16 for CS5531/33; 31:8 for CS5532/34]
NU (Not Used) [15:3 for CS5531/33; 7:3 for CS5532/34]
OF (Over-range Flag Bit) [2]
CI (Channel Indicator Bits) [1:0]
0
1
00
01
10
11
D14
D14
14
22
0
6
Binary
Offset
FFFF
FFFF
FFFE
7FFF
8000
0001
0000
0000
------
------
------
D29
D13
D29
D13
13
21
0
5
These bits depict the latest output conversion.
These bits are masked logic zero.
Bit is clear when over-range condition has not occurred.
Bit is set when input signal is more positive than the positive full scale, more negative than zero (unipolar
mode) or when the input is more negative than the negative full scale (bipolar mode).
These bits indicate which physical input channel was converted.
Physical Channel 1
Physical Channel 2
Physical Channel 3
Physical Channel 4
<(-VFS+0.5 LSB)
>(VFS-1.5 LSB)
-VFS+0.5 LSB
D28
D12
D28
D12
Bipolar Input
VFS-1.5 LSB
12
20
0
4
-0.5 LSB
Voltage
D27
D11
D27
D11
19
11
0
3
D26
D10
D26
D10
10
18
0
2
Complement
Two's
7FFE
FFFF
7FFF
7FFF
0000
8001
8000
8000
------
------
------
D25
D25
D9
D9
17
9
0
1
D24
D24
LSB
D8
D8
16
8
0
>(VFS-1.5 LSB) FFFFFF >(VFS-1.5 LSB)
Unipolar Input
VFS/2-0.5 LSB 800000
Table 5. Output Coding for 24-bit CS5532 and CS5534
D23
D23
VFS-1.5 LSB
D7
D7
<(+0.5 LSB)
15
7
0
0
+0.5 LSB
Voltage
D22
D22
D6
D6
14
6
0
0
D21
D21
D5
D5
FFFFFF
FFFFFE
13
7FFFFF
000001
000000
000000 <(-VFS+0.5 LSB)
Binary
5
0
0
Offset
------
------
------
CS5531/32/33/34-AS
D20
D20
D4
D4
12
4
0
0
-VFS+0.5 LSB
Bipolar Input
VFS-1.5 LSB
-0.5 LSB
Voltage
D19
D19
D3
D3
11
3
0
0
D18
D18
OF
OF
D2
D2
10
2
Complement
D17
D17
CI1
CI1
D1
D1
7FFFFE
FFFFFF
7FFFFF
7FFFFF
000000
800001
800000
800000
1
9
Two's
------
------
------
D16
LSB
D16
CI0
CI0
D0
D0
8
37