CDK-5581 Cirrus Logic Inc, CDK-5581 Datasheet - Page 16

• Manufacturer Part Number: CDK-5581
• Description: Audio Modules & Development Tools KIT CDB558 w/ Capture Plus II
• Manufacturer: Cirrus Logic Inc

Specifications of CDK-5581

• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
14:34
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
CS5581
DS796PP1