DAC8830-EP_16 Datasheet, PDF (20/32 Pages) Texas Instruments – 16-Bit, Ultra-Low Power, Voltage-Output Digital-to-Analog Converters

DAC8830-EP
DAC8831-EP
SGLS334C – AUGUST 2006 – REVISED APRIL 2007
+5 V
0.1 µF
+2.5 V
+
0.1 µF
10 µF
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LDAC
CS
SCLK
SDI
V_DD
V_REF−S V_REF−F
OPA277
OPA704
R_INV
R_FB
RFB
OPA727
+V
DAC
INV
V_OUT
−V
AGNDF
Input
Register
DAC Latch
AGNDS
DAC8831
DGND
V_O = 0 to +V_REF
Figure 47. Unipolar Output Mode of DAC8831
Assuming a perfect reference, the worst-case output voltage may be calculated from the following equation:
Unipolar Mode Worst-Case Output
V_{OUT_UNI}
+
D
2¹⁶
ǒ_{VREF ) VGE}Ǔ _{) VZSE ) INL}
Where:
V_{OUT_UNI} = Unipolar mode worst-case output
D = Code loaded to DAC
V_REF = Reference voltage applied to part
V_GE = Gain error in volts
V_ZSE = Zero scale error in volts
INL = Integral nonlinearity in volts
20
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