AFS090 datasheet(100/334 Pages) MICROSEMI

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Device Architecture

2- 84

R e visio n 2

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 (Figure 2-64), there will be

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.

Figure 2-64 • Analog Quad Direct Connect

Prescaler

Analog Quad

Voltage

Monitor Block

Current

Monitor Block

Digital

Input

Power

MOSFET

Gate Driver

Current

Monitor / Instr

Amplifier

Temperature

Monitor

Digital

Input

Digital

Input

Pads

To Analog MUX

To FPGA

(DAVOUTx)

To FPGA

(DACOUTx)

To FPGA

(DATOUTx)

On-Chip

Gate

Driver

Temperature

Monitor Block

Off-Chip

From FPGA

(GDONx)

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