CS5532-BS Cirrus Logic Inc, CS5532-BS Datasheet - Page 31

• Manufacturer Part Number: CS5532-BS
• Description: IC, ADC, 24BIT, 3.84KSPS, SSOP-20
• Manufacturer: Cirrus Logic Inc

Specifications of CS5532-BS

• Resolution (bits): 24bit
• Sampling Rate: 3.84kSPS
• Input Channel Type: Differential
• Data Interface: 3-Wire, Serial
• Supply Current: 13mA
• Digital Ic Case Style: SSOP
• No. Of Pins: 20
• Rohs Compliant: No

DS289PP5
U/B (Unipolar / Bipolar) [22] [6]
OL1-OL0 (Output Latch Bits) [21:20] [5:4]
DT (Delay Time Bit) [19] [3]
OCD (Open Circuit Detect Bit) [18] [2]
OG1-OG0 (Offset / Gain Register Pointer Bits) [17:16] [1:0]
0
1
00
01
10
11
0
1
0
1
00
01
10
11
Select Bipolar mode.
Select Unipolar mode.
The latch bits will be set to the logic state of these bits upon command word execution when the output
latch select bit (OLS) in the configuration register is logic 0. Note that the logic outputs on the chip are
powered from VA+ and VA-.
A0 = 0, A1 = 0
A0 = 0, A1 = 1
A0 = 1, A1 = 0
A0 = 1, A1 = 1
When set, the converter will wait for a delay time before starting a conversion. This allows settling time for
A0 and A1 outputs before a conversion begins. The delay time will be 1280 MCLK cycles when FRS = 0,
and 1536 MCLK cycles when FRS = 1.
Begin Conversions Immediately.
Wait 1280 MCLK cycles (FRS = 0) or 1536 MCLK cycles (FRS = 1) before starting conversion.
When set, this bit activates a 300 nA current source on the input channel (AIN+) selected by the channel
select bits. Note that the 300nA current source is rated at 25°C. At -55°C, the current source doubles to
approximately 600nA. This feature is particularly useful in thermocouple applications when the user wants
to drive a suspected open thermocouple lead to a supply rail.
Normal mode.
Activate current source.
These bits are only used when OGS in the Configuration Register is set to ‘1’. They allow the user to select
the offset and gain register to use while performing a conversion or calibration. When the OGS bit in the
Configuration Register is set to ‘0’, the offset and gain register for the referenced physical channel (CS1-
CS0 bits of the Setup) will be used.
Use offset and gain register from physical channel 1
Use offset and gain register from physical channel 2
Use offset and gain register from physical channel 3
Use offset and gain register from physical channel 4
CS5531/32/33/34
31