Document Number: 001-52469 Rev. *H Page 21 of 50
0b010 RefPower = high
Opamp bias = high
V
REFHI
Ref High V
DD
V
DD
– 0.121 V
DD
– 0.003 V
DD
V
V
AGND
AGND V
DD
/2 V
DD
/2 – 0.040 V
DD
/2 V
DD
/2 + 0.034 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.006 V
SS
+ 0.019 V
RefPower = high
Opamp bias = low
V
REFHI
Ref High V
DD
V
DD
– 0.083 V
DD
– 0.002 V
DD
V
V
AGND
AGND V
DD
/2 V
DD
/2 – 0.040 V
DD
/2 – 0.001 V
DD
/2 + 0.033 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.004 V
SS
+ 0.016 V
RefPower = medium
Opamp bias = high
V
REFHI
Ref High V
DD
V
DD
– 0.075 V
DD
– 0.002 V
DD
V
V
AGND
AGND V
DD
/2 V
DD
/2 – 0.040 V
DD
/2 – 0.001 V
DD
/2 + 0.032 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.003 V
SS
+ 0.015 V
RefPower = medium
Opamp bias = low
V
REFHI
Ref High V
DD
V
DD
– 0.074 V
DD
– 0.002 V
DD
V
V
AGND
AGND V
DD
/2 V
DD
/2 – 0.040 V
DD
/2 – 0.001 V
DD
/2 + 0.032 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.002 V
SS
+ 0.014 V
0b011 RefPower = high
Opamp bias = high
V
REFHI
Ref High 3 × Bandgap 3.753 3.874 3.979 V
V
AGND
AGND 2 × Bandgap 2.511 2.590 2.657 V
V
REFLO
Ref Low Bandgap 1.243 1.297 1.333 V
RefPower = high
Opamp bias = low
V
REFHI
Ref High 3 × Bandgap 3.767 3.881 3.974 V
V
AGND
AGND 2 × Bandgap 2.518 2.592 2.652 V
V
REFLO
Ref Low Bandgap 1.241 1.295 1.330 V
RefPower = medium
Opamp bias = high
V
REFHI
Ref High 3 × Bandgap 2.771 3.885 3.979 V
V
AGND
AGND 2 × Bandgap 2.521 2.593 2.649 V
V
REFLO
Ref Low Bandgap 1.240 1.295 1.331 V
RefPower = medium
Opamp bias = low
V
REFHI
Ref High 3 × Bandgap 3.771 3.887 3.977 V
V
AGND
AGND 2 × Bandgap 2.522 2.594 2.648 V
V
REFLO
Ref Low Bandgap 1.239 1.295 1.332 V
0b100 RefPower = high
Opamp bias = high
V
REFHI
Ref High 2 × Bandgap + P2[6]
(P2[6] = 1.3 V)
2.481 + P2[6] 2.569 + P2[6] 2.639 + P2[6] V
V
AGND
AGND 2 × Bandgap 2.511 2.590 2.658 V
V
REFLO
Ref Low 2 × Bandgap – P2[6]
(P2[6] = 1.3 V)
2.515 – P2[6] 2.602 – P2[6] 2.654 – P2[6] V
RefPower = high
Opamp bias = low
V
REFHI
Ref High 2 × Bandgap + P2[6]
(P2[6] = 1.3 V)
2.498 + P2[6] 2.579 + P2[6] 2.642 + P2[6] V
V
AGND
AGND 2 × Bandgap 2.518 2.592 2.652 V
V
REFLO
Ref Low 2 × Bandgap – P2[6]
(P2[6] = 1.3 V)
2.513 – P2[6] 2.598 – P2[6] 2.650 – P2[6] V
RefPower = medium
Opamp bias = high
V
REFHI
Ref High 2 × Bandgap + P2[6]
(P2[6] = 1.3 V)
2.504 + P2[6] 2.583 + P2[6] 2.646 + P2[6] V
V
AGND
AGND 2 × Bandgap 2.521 2.592 2.650 V
V
REFLO
Ref Low 2 × Bandgap – P2[6]
(P2[6] = 1.3 V)
2.513 – P2[6] 2.596 – P2[6] 2.649 – P2[6] V
RefPower = medium
Opamp bias = low
V
REFHI
Ref High 2 × Bandgap + P2[6]
(P2[6] = 1.3 V)
2.505 + P2[6] 2.586 + P2[6] 2.648 + P2[6] V
V
AGND
AGND 2 × Bandgap 2.521 2.594 2.648 V
V
REFLO
Ref Low 2 × Bandgap – P2[6]
(P2[6] = 1.3 V)
2.513 – P2[6] 2.595 – P2[6] 2.648 – P2[6] V
Table 16. 5-V DC Analog Reference Specifications (continued)
Reference
ARF_CR
[5:3]
Reference Power
Settings
Symbol Reference Description Min Typ Max Units
(6 Seiten)
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