PRELIMINARY CY8CNP102B, CY8CNP102E
Document #: 001-43991 Rev. *D Page 25 of 38
DC Analog Output Buffer Specifications
DC Analog Reference Specifications
The guaranteed specifications are measured through the Analog Continuous Time PSoC blocks. The power levels for AGND refer to
the power of the Analog Continuous Time PSoC block. The power levels for RefHi and RefLo refer to the Analog Reference Control
register. The limits stated for AGND include the offset error of the AGND buffer local to the Analog Continuous Time PSoC block.
Reference control power is high.
Table 28. 5V DC Analog Output Buffer Specifications (CY8CNP102E)
Symbol Description Min Typ Max Units
VOSOB Input Offset Voltage (Absolute Value) – 3 12 mV
TCVOSOB Average Input Offset Voltage Drift –+6 –μV/°C
VCMOB Common-Mode Input Voltage Range 0.5 –Vcc - 1.0 V
ROUTOB Output Resistance
Power = Low – – 1 Ω
Power = High – – 1 Ω
VOHIGHOB High Output Voltage Swing (Load = 32 ohms to Vcc/2)
Power = Low 0.5 x Vcc + 1.3 – – V
Power = High 0.5 x Vcc + 1.3 – – V
VOLOWOB Low Output Voltage Swing (Load = 32 ohms to Vcc/2)
Power = Low – – 0.5 x Vcc - 1.3 V
Power = High – – 0.5 x Vcc - 1.3 V
ISOB Supply Current Including Bias Cell (No Load)
Power = Low –1.1 2mA
Power = High –2.6 5mA
PSRROB Supply Voltage Rejection Ratio 40 64 –dB
Table 29. 5V DC Analog Reference Specifications (CY8CNP102E)
Symbol Description Min Typ Max Units
VBG5 Bandgap Voltage Reference 5V 1.28 1.30 1.32 V
–AGND = Vcc/2[1] Vcc/2 - 0.02 Vcc/2 Vcc/2 + 0.02 V
–AGND = 2 x BandGap[1] 2.52 2.60 2.72 V
–AGND = P2[4] (P2[4] = Vcc/2)[1] P2[4] - 0.013 P2[4] P2[4] + 0.013 V
–AGND = BandGap[1] 1.27 1.3 1.34 V
–AGND = 1.6 x BandGap[1] 2.03 2.08 2.13 V
–AGND Block to Block Variation (AGND = Vcc/2)[1] -0.034 0.000 0.034 V
–RefHi = Vcc/2 + BandGap Vcc/2 + 1.21 Vcc/2 + 1.3 Vcc/2 + 1.382 V
–RefHi = 3 x BandGap 3.75 3.9 4.05 V
–RefHi = 2 x BandGap + P2[6] (P2[6] = 1.3V) P2[6] + 2.478 P2[6] + 2.6 P2[6] + 2.722 V
–RefHi = P2[4] + BandGap (P2[4] = Vcc/2) P2[4] + 1.218 P2[4] + 1.3 P2[4] + 1.382 V
–RefHi = P2[4] + P2[6] (P2[4] = Vcc/2, P2[6] = 1.3V) P2[4] + P2[6] - 0.058 P2[4] + P2[6] P2[4] + P2[6] + 0.058 V
–RefHi = 2 x BandGap 2.50 2.60 2.70 V
–RefHi = 3.2 x BandGap 4.02 4.16 4.29 V
–RefLo = Vcc/2 – BandGap Vcc/2 - 1.369 Vcc/2 - 1.30 Vcc/2 - 1.231 V
–RefLo = BandGap 1.20 1.30 1.40 V
–RefLo = 2 x BandGap - P2[6] (P2[6] = 1.3V) 2.489 - P2[6] 2.6 - P2[6] 2.711 - P2[6] V
–RefLo = P2[4] – BandGap (P2[4] = Vcc/2) P2[4] - 1.368 P2[4] - 1.30 P2[4] - 1.232 V
–RefLo = P2[4]-P2[6] (P2[4] = Vcc/2, P2[6] = 1.3V) P2[4] - P2[6] - 0.042 P2[4] - P2[6] P2[4] - P2[6] + 0.042 V
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