MSP430F2619S-HT_14 Datasheet, PDF (68/93 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F2619S-HT
SLAS697D – MARCH 2010 – REVISED OCTOBER 2013
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12-Bit DAC Reference Input Specifications – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
V_eREF+
PARAMETER
Reference input voltage
range
TEST CONDITIONS
DAC12IR = 0⁽¹⁾⁽²⁾
DAC12IR = 1⁽³⁾⁽⁴⁾
DAC12_0 IR = DAC12_1 IR = 0
V_CC
2.2 V/3 V
MIN
TYP
AV_CC/3
AV_CC
20
MAX
AV_CC + 0.2
AV_CC + 0.2
DAC12_0 IR = 1, DAC12_1 IR = 0
40
48
56
Ri_(VREF+), Reference input
Ri_(VeREF+) reistance
DAC12_0 IR = 0, DAC12_1 IR = 1
2.2 V/3 V
DAC12_0 IR = 0, DAC12_1 IR = 1
20
24
28
DAC12_0 SREFx = DAC12_1
SREFx ⁽⁵⁾
UNIT
V
MΩ
kΩ
(1) For a full-scale output, the reference input voltage can be as high as 1/3 of the maximum output voltage swing (AV_CC).
(2) The maximum voltage applied at reference input voltage terminal V_eREF+ = [AV_CC - V_E(O)] / [3 x (1 + E_G)].
(3) For a full-scale output, the reference input voltage can be as high as the maximum output voltage swing (AV_CC).
(4) The maximum voltage applied at reference input voltage terminal V_eREF+ = [AV_CC - V_E(O)] / (1 + E_G).
(5) When DAC12IR = 1 and DAC12SREFx = 0 or 1 for both channels, the reference input resistive dividers for each DAC are in parallel
reducing the reference input resistance.
68
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