Document Number: 38-08036 Rev. *E Page 18 of 33
DC Analog Reference Specifications
The following tables list guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and –40°C <
T
A
< 85°C, or 3.15V to 3.5V and –40°C < T
A
< 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only.
Table 13. 5V DC Analog Reference Specifications
Parameter Description Min Typ Max Unit
BG Bandgap Voltage Reference 1.28 1.30 1.32 V
– AGND = Vdd/2
[3]
Vdd/2 – 0.04 Vdd/2 – 0.01 Vdd/2 + 0.007 V
– AGND = 2 x BandGap
[3]
2 x BG – 0.048 2 x BG – 0.030 2 x BG + 0.024 V
– AGND = P2[4] (P2[4] = Vdd/2)
[3]
P2[4] – 0.011 P2[4] P2[4] + 0.011 V
– AGND = BandGap
[3]
BG – 0.009 BG + 0.008 BG + 0.016 V
– AGND = 1.6 x BandGap
[3]
1.6 x BG – 0.022 1.6 x BG – 0.010 1.6 x BG + 0.018 V
– AGND Block to Block Variation
(AGND = Vdd/2)
[3]
–0.034 0.000 0.034 V
– RefHi = Vdd/2 + BandGap Vdd/2 + BG – 0.10 Vdd/2 + BG Vdd/2 + BG + 0.10 V
– RefHi = 3 x BandGap 3 x BG – 0.06 3 x BG 3 x BG + 0.06 V
– RefHi = 2 x BandGap + P2[6] (P2[6] =
1.3V)
2 x BG + P2[6] –
0.113
2 x BG + P2[6] – 0.018 2 x BG + P2[6] + 0.077 V
– RefHi = P2[4] + BandGap (P2[4] =
Vdd/2)
P2[4] + BG – 0.130 P2[4] + BG – 0.016 P2[4] + BG + 0.098 V
– RefHi = P2[4] + P2[6] (P2[4] = Vdd/2,
P2[6] = 1.3V)
P2[4] + P2[6] – 0.133 P2[4] + P2[6] – 0.016 P2[4] + P2[6]+ 0.100 V
– RefHi = 3.2 x BandGap 3.2 x BG – 0.112 3.2 x BG 3.2 x BG + 0.076 V
– RefLo = Vdd/2 – BandGap Vdd/2 – BG – 0.04 Vdd/2 – BG
+ 0.024 Vdd/2 – BG + 0.04 V
– RefLo = BandGap BG – 0.06 BG BG + 0.06 V
– RefLo = 2 x BandGap – P2[6] (P2[6] =
1.3V)
2 x BG – P2[6] –
0.084
2 x BG – P2[6] + 0.025 2 x BG – P2[6] + 0.134 V
– RefLo = P2[4] – BandGap (P2[4] =
Vdd/2)
P2[4] – BG – 0.056 P2[4] – BG + 0.026 P2[4] – BG + 0.107 V
– RefLo = P2[4]-P2[6] (P2[4] = Vdd/2,
P2[6] = 1.3V)
P2[4] – P2[6] – 0.057 P2[4] – P2[6] + 0.026 P2[4] – P2[6] + 0.110 V
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