afs600 Actel Corporation, afs600 Datasheet - Page 106

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

ADC Description
The Actel Fusion ADC is a 12-bit SAR ADC. It offers a wide variety of features for different use models.
shows a block diagram of the Fusion ADC.
Figure 2-80 • ADC Simplified Block Diagram
ADC Configuration Description
The Fusion ADC can be configured to operate in 8-, 10-, or 12-bit modes, power-down after conversion, and dynamic
calibration. This is controlled by MODE[3:0], as defined in
Table 2-41 • Mode Bits Function
2 -9 2
Name
MODE
MODE
MODE
Actel Fusion Programmable System Chips
• Configurable resolution: 8-bit, 10-bit, and 12-bit mode
• DNL: 0.6 LSB for 10-bit mode
• INL: 0.4 LSB for 10-bit mode
• No missing code
• Internal VAREF = 2.56 V
• Maximum Sample Rate = 600 ksps
• Power-up calibration and dynamic calibration after every sample to compensate for temperature drift over time
Analog Quads
Signals from
Bits
1:0
3
2
0 – Internal calibration after every conversion; two ADCCLK cycles are used after the conversion.
1 – No calibration after every conversion
0 – Power-down after conversion
1 – No Power-down after conversion
00 – 10-bit
01 – 12-bit
10 – 8-bit
11 – Unused
32
CHNUMBER
SYSCLK
Analog
MUX
A d v a n c e d v 1 . 4
Table
TVC
STC
VAREF
2-41.
SAR ADC
Function
ADCCLK
STATUS
MODE
12
CALIBRATE
SAMPLE
BUSY
DATAVALID
RESULT
Figure 2-80