M1AFS250-FGG256I Actel Corporation, M1AFS250-FGG256I Datasheet - Page 102

• Manufacturer Part Number: M1AFS250-FGG256I
• Description: Actel Fusion Family Of Mixed Signal Fpgas
• Manufacturer: Actel Corporation

Device Architecture
Figure 2-67 • Analog Quad Direct Connect
2- 86
Off-Chip
On-Chip
Pads
Voltage Monitor
The Fusion Analog Quad offers a robust set of voltage-monitoring capabilities unique in the FPGA
industry. The Analog Quad comprises three analog input pads— Analog Voltage (AV), Analog Current
(AC), and Analog Temperature (AT)—and a single gate driver output pad, Analog Gate (AG). There are
many common characteristics among the analog input pads. Each analog input can be configured to
connect directly to the input MUX of the ADC. When configured in this manner
no prescaling of the input signal. Care must be taken in this mode not to drive the ADC into saturation by
applying an input voltage greater than the reference voltage. The internal reference voltage of the ADC is
2.56 V. Optionally, an external reference can be supplied by the user. The external reference can be a
maximum of 3.3 V DC.
AV
Prescaler
Digital
Input
Monitor Block
Voltage
(DAVOUTx)
To FPGA
To Analog MUX
Monitor / Instr
AC
Prescaler
Amplifier
Digital
Current
Input
Monitor Block
(DACOUTx)
Current
To FPGA
Analog Quad
To Analog MUX
R e visio n 1
From FPGA
Gate Driver
MOSFET
(GDONx)
Power
AG
Driver
Gate
AT
Temperature
Digital
Input
Prescaler
Monitor
(Figure
Monitor Block
Temperature
(DATOUTx)
To FPGA
2-67), there will be
To Analog MUX