SmartFusion DC and Switching Characteristics
2-84 Revision 10
Comparator
Unless otherwise specified, performance is specified at 25°C with nominal power supply voltages.
Table 2-98 • Comparator Performance Specifications
Specification Test Conditions Min. Typ. Max. Units
Input voltage range Minimum 0 V
Maximum 2.56 V
Input offset voltage HYS[1:0] = 00
(no hysteresis)
±1 ±3 mV
Input bias current Comparator 1, 3, 5, 7, 9 (measured at 2.56 V) 40 100 nA
Comparator 0, 2, 4, 6, 8 (measured at 2.56 V) 150 300 nA
Input resistance 10 M
Power supply rejection ratio DC (0 – 10 KHz) 50 60 dB
Propagation delay 100 mV overdrive
HYS[1:0] = 00
(no hysteresis) 15 18 ns
100 mV overdrive
HYS[1:0] = 10
(with hysteresis) 25 30 ns
Hysteresis
(± refers to rising and falling
threshold shifts, respectively)
HYS[1:0] = 00 Typical (25°C) 0 0 ±5 mV
Across all corners (–40ºC to +100ºC) 0 ±5 mV
HYS[1:0] = 01 Typical (25°C) ±3 ±
16 ±30 mV
Across all corners (–40ºC to +100ºC) 0 ±36 mV
HYS[1:0] = 10 Typical (25°C) ±19 ± 31 ±48 mV
Across all corners (–40ºC to +100ºC) ±12 ±54 mV
HYS[1:0] = 11 Typical (25°C) ±80 ± 105 ±190 mV
Across all corners (–40ºC to +100ºC) ±80 ±194 mV
Comparator current
requirements
(per comparator)
VCC33A = 3.3 V (operational mode); COMP_EN = 1
VCC33A 150 165 µA
VCC33AP 140 165 µA
VCC15A 1 3 µA