Datasheet

I , | = 0.94
AVDD
(1 + 22 Gain)I |
AVSS
· ·
V
R
REF
REF
DAC1280
SBAS432A –APRIL 2010–REVISED SEPTEMBER 2010 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Minimum/maximum specifications at –40°C to +85°C, typical specifications at +25°C, AVDD = +2.5V, AVSS = –2.5V, DVDD =
3.3V, CLK = 4.096MHz, V
REF
= 5V, and R
REF
= 30kΩ, unless otherwise noted. Refer to circuit configuration shown in
Figure 35.
DAC1280
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
REFERENCE RESISTOR (RREF)
Reference resistor 28 30 60 kΩ
DIGITAL INPUTS (DVDD = 1.65V to 3.6V)
V
IH
0.8 × DVDD DVDD V
V
IL
DGND 0.2 × DVDD V
Input hysteresis 0.5 V
Input leakage 0 < V
IN
< DVDD –10 10 mA
CLOCK INPUT (f
CLK
)
Frequency 1 4.096 MHz
TDATA INPUT
Frequency f
CLK
/16 MHz
1s density modulation 25 75 %
POWER SUPPLY
AVSS –2.6 0 V
AVDD AVSS + 4.75 AVSS + 5.25 V
DVDD 1.65 3.6 V
Gain = 1/1 3.6 3.7 | mA |
AVDD, AVSS current
(8)
Power-down 1 10 | mA |
Operating 60 150 mA
DVDD current
Power-down
(9)
1 10 mA
Gain = 1/1 18 mW
Power dissipation
Power-down 8 mW
TEMPERATURE RANGE
Specified temperature range –40 +85 °C
Operating temperature range –40 +125 °C
Storage temperature range –40 +150 °C
(8) Typical analog supply current depends on gain, V
REF
, and R
REF
:
(9) CLK and TDATA stopped. Digital inputs maintained at V
IH
or V
IL
levels.
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