DAC1020_11 Datasheet, PDF (4/16 Pages) Texas Instruments – 10-Bit Binary Multiplying D/A Converter

Electrical Characteristics (V^a e 15V V_REF e 10 000V T_A e 25 C unless otherwise specified) (Continued)
Parameter
Conditions
DAC1020 DAC1021
DAC1022
DAC1220 DAC1222
Units
Min
Typ
Max
Min
Typ
Max
Digital Input
Low Threshold
High Threshold
Digital Input Current
(Figure 1)
T_MIN^kT_A^kT_MAX
T_MIN^kT_A^kT_MAX
T_MIN^sT_A^sT_MAX
Digital Input High
Digital Input Low
08
08
V
24
24
V
1
b50
100
b200
1
100
mA
b50
b200
mA
Supply Current
All Digital Inputs High
All Digital Inputs Low
02
16
06
2
02
16
mA
06
2
mA
Operating Power Supply (Figures 1 and 2)
5
Range
15
5
15
V
Note 1 V_REFe g10V and V_REFe g1V A linearity error temperature coefficient of 0 0002% FS for a 45 C rise only guarantees 0 009% maximum change in
linearity error For instance if the linearity error at 25 C is 0 045% FS it could increase to 0 054% at 70 C and the DAC will be no longer a 10-bit part Note
however that the linearity error is specified over the device full temperature range which is a more stringent specification since it includes the linearity error
temperature coefficient
Note 2 Using internal feedback resistor as shown in Figure 3
Note 3 Both I_{OUT 1} and I_{OUT 2} must go to ground or the virtual ground of an operational amplifier If V_REFe10V every millivolt offset between I_{OUT 1} or I_{OUT 2}
0 005% linearity error will be introduced
Note 4 Human body model 100 pF discharged through a 1 5 kX resistor
Note 5 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur DC and AC electrical specifications do not apply when operating
the device beyond its specified operating conditions
Note 6 The maximum power dissipation must be derated at elevated temperatures and is dictated by T_JMAX i_JA and the ambient temepature T_A The maximum
allowable power dissipation at any temperature is P_D e (T_JMAX b T_A) i_JA or the number given in the Absolute Maximum Ratings whichever is lower For this
device T_JMAX e 125 C and the typical junction-to-ambient thermal resistance of the J18 package when board mounted is 85 C W For the N18 package i_JA is
120 C W for the N16 this number is 125 C W and for the V20 this number is 95 C W
Typical Performance Characteristics
FIGURE 1 Digital Input Threshold vs
Ambient Temperature
TL H 5689 – 2
FIGURE 2 Gain Error Variation vs V^a
3
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