IO13PDB0V0 datasheet(89/197 Pages) MICROSEMI

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SmartFusion Customizable System-on-Chip (cSoC)

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Programmable Analog Specifications

Current Monitor

Unless otherwise noted, current monitor performance is specified at 25°C with nominal power supply

voltages, with the output measured using the internal voltage reference with the internal ADC in 12-bit

mode and 91 Ksps, after digital compensation. All results are based on averaging over 16 samples.

Table 2-93 • Current Monitor Performance Specification

Specification

Test Conditions

Min.

Typical

Max.

Units

Input voltage range (for driving ADC

over full range)

0 – 48

0 – 50

1 – 51

Analog gain

From the differential voltage across the

input pads to the ADC input

V/V

Input referred offset voltage

0.1

0.5

–40ºC to +100ºC

0.1

0.5

Gain error

Slope of BFSL vs. 50 V/V

±0.1

±0.5

% nom.

–40ºC to +100ºC

±0.5

% nom.

Overall Accuracy

Peak error from ideal transfer function,

25°C

±(0.1 +

0.25%)

±(0.4 +

1.5%)

mV plus

reading

Input referred noise

0 VDC input (no output averaging)

0.3

0.4

0.5

mVrms

Common-mode rejection ratio

0 V to 12 VDC common-mode voltage

–86

–87

Analog settling time

To 0.1% of final value (with ADC load)

From CM_STB (High)

µs

From ADC_START (High)

200

µs

Input capacitance

8pF

Input biased current

CM[n] or TM[n] pad,

–40°C to +100°C over maximum input

voltage range (plus is into pad)

Strobe = 0; IBIAS on CM[n]

µA

Strobe = 1; IBIAS on CM[n]

µA

Strobe = 0; IBIAS on TM[n]

µA

Strobe = 1; IBIAS on TM[n]

µA

Power supply rejection ratio

DC (0 – 10 KHz)

Incremental

operational

current

monitor

power

supply

current

requirements (per current monitor

instance, not including ADC or

VAREFx)

VCC33A

150

µA

VCC33AP

140

µA

VCC15A

µA

Note:

Under no condition should the TM pad ever be greater than 10 mV above the CM pad. This restriction is

applicable only if current monitor is used.

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