CDK8307 Cadeka Microcircuits LLC., CDK8307 Datasheet - Page 25

• Manufacturer Part Number: CDK8307
• Description: 12/13-bit, 20/40/50/65/80msps, Eight Channel, Ultra Low Power Adc With Lvds
• Manufacturer: Cadeka Microcircuits LLC.

PRELIMINARY Data Sheet
Table 20. Performance Control Settings
The ext_vcm_bc register controls the driving strength in the buffer supplying the voltage on the VCM pin. If this pin is
not in use, the buffer can be switched off. If current is drawn from the VCM pin, the driving strength can be increased
to keep the voltage on this pin at the correct level.
Table 21. External Common Mode Voltage Buffer Driving Strength
©2009 CADEKA Microcircuits LLC
performance_control <2:0>
000 (default)
100
101
110
111
001
010
011
ext_vcm_bc <1:0>
01 (default)
00
10
11
-40% (lower performance)
Power Dissipation
Do not use
Do not use
Do not use
Nominal
-30%
-20%
-10%
VCM Buffer Driving Strength
Off (VCM floating)
High
Low
Max
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