CDB5571 Cirrus Logic Inc, CDB5571 Datasheet - Page 16

• Manufacturer Part Number: CDB5571
• Description: DEV BOARD FOR CS5571 W/MUX
• Manufacturer: Cirrus Logic Inc
• Type: A/Dr

Specifications of CDB5571

• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 100k
• Data Interface: Serial
• Inputs Per Adc: 2 Single
• Input Range: 2.4 ~ 4.2 V
• Voltage Supply Source: Dual ±
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: CS5571
• Product: Data Conversion Development Tools
• Conversion Rate: 100 KSPS
• Resolution: 16 bit
• Maximum Clock Frequency: 16 MHz
• Interface Type: SPI
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): - 2.5 V
• For Use With/related Products: CS5571
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1275; CDB5571-1

3.5 Output Coding Format
The reference voltage directly defines the input voltage range in both the unipolar and bipolar configura-
tions. In the unipolar configuration (BP/UP low), the first code transition occurs 0.5 LSB above zero, and
the final code transition occurs 1.5 LSBs below VREF. In the bipolar configuration (BP/UP high), the first
code transition occurs 0.5 LSB above -VREF and the last transition occurs 1.5 LSBs below +VREF. See
Table 1
16
NOTE: VREF = [(VREF+) - (VREF-)] / 2
NOTE: VREF = [(VREF+) - (VREF-)] / 2
for the output coding of the converter.
Table 1. Output Coding, Two’s Complement
Unipolar Input Voltage
Bipolar Input Voltage
Table 2. Output Coding, Offset Binary
<(-VREF+0.5 LSB)
(VREF/2)-0.5 LSB
>(VREF-1.5 LSB)
>(VREF-1.5 LSB)
-VREF+0.5 LSB
VREF-1.5 LSB
VREF-1.5 LSB
<(+0.5 LSB)
+0.5 LSB
-0.5 LSB
3/25/08
10:56
Complement
Binary
Offset
Two’s
7F FF
7F FF
7F FE
FF FF
FF FF
FF FF
FF FE
7F FF
00 00
80 01
80 00
80 00
80 00
00 01
00 00
00 00
CS5571
DS768PP1