
Document Number: 001-53754 Rev. *F Page 24 of 50
0b011 All power settings.
Not allowed for 3.3 V.
–– – – – – –
0b100 All power settings.
Not allowed for 3.3 V.
–– – – – – –
0b101 RefPower = high
Opamp bias = high
V
REFHI
Ref High P2[4] + Bandgap
(P2[4] = V
DD
/2)
P2[4] + 1.214 P2[4] + 1.291 P2[4] + 1.359 V
V
AGND
AGND P2[4] P2[4] P2[4] P2[4] –
V
REFLO
Ref Low P2[4] – Bandgap
(P2[4] = V
DD
/2)
P2[4] – 1.335 P2[4] – 1.292 P2[4] – 1.200 V
RefPower = high
Opamp bias = low
V
REFHI
Ref High P2[4] + Bandgap
(P2[4] = V
DD
/2)
P2[4] + 1.219 P2[4] + 1.293 P2[4] + 1.357 V
V
AGND
AGND P2[4] P2[4] P2[4] P2[4] –
V
REFLO
Ref Low P2[4] – Bandgap
(P2[4] = V
DD
/2)
P2[4] – 1.335 P2[4] – 1.295 P2[4] – 1.243 V
RefPower = medium
Opamp bias = high
V
REFHI
Ref High P2[4] + Bandgap
(P2[4] = V
DD
/2)
P2[4] + 1.222 P2[4] + 1.294 P2[4] + 1.356 V
V
AGND
AGND P2[4] P2[4] P2[4] P2[4] –
V
REFLO
Ref Low P2[4] – Bandgap
(P2[4] = V
DD
/2)
P2[4] – 1.337 P2[4] – 1.296 P2[4] – 1.244 V
RefPower = medium
Opamp bias = low
V
REFHI
Ref High P2[4] + Bandgap
(P2[4] = V
DD
/2)
P2[4] + 1.224 P2[4] + 1.295 P2[4] + 1.355 V
V
AGND
AGND P2[4] P2[4] P2[4] P2[4] –
V
REFLO
Ref Low P2[4] – Bandgap
(P2[4] = V
DD
/2)
P2[4] – 1.339 P2[4] – 1.297 P2[4] – 1.244 V
0b110 RefPower = high
Opamp bias = high
V
REFHI
Ref High 2 × Bandgap 2.510 2.595 2.655 V
V
AGND
AGND Bandgap 1.276 1.301 1.332 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.006 V
SS
+ 0.031 V
RefPower = high
Opamp bias = low
V
REFHI
Ref High 2 × Bandgap 2.513 2.594 2.656 V
V
AGND
AGND Bandgap 1.275 1.301 1.331 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.004 V
SS
+ 0.021 V
RefPower = medium
Opamp bias = high
V
REFHI
Ref High 2 × Bandgap 2.516 2.595 2.657 V
V
AGND
AGND Bandgap 1.275 1.301 1.331 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.003 V
SS
+ 0.017 V
RefPower = medium
Opamp bias = low
V
REFHI
Ref High 2 × Bandgap 2.520 2.595 2.658 V
V
AGND
AGND Bandgap 1.275 1.300 1.331 V
V
REFLO
Ref Low V
SS
V
SS
V
SS
+ 0.002 V
SS
+ 0.015 V
0b111 All power settings.
Not allowed for 3.3 V.
–– – – – – –
Table 13. 3.3-V DC Analog Reference Specifications (continued)
Reference
ARF_CR
[5:3]
Reference Power
Settings
Symbol Reference Description Min Typ Max Units
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