Datasheet
DAC7568
DAC8168
DAC8568
www.ti.com
SBAS430D –JANUARY 2009–REVISED MAY 2012
ELECTRICAL CHARACTERISTICS
At AV
DD
= 2.7V to 5.5V and over –40°C to +125°C (unless otherwise noted).
DAC7568/DAC8168/DAC8568
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
STATIC PERFORMANCE
(1)
Resolution 16 Bits
Measured by the line passing through codes 485 and
DAC8568 Relative accuracy ±4 ±12 LSB
64714
Differential nonlinearity 16-bit monotonic ±0.2 ±1 LSB
Resolution 14 Bits
Measured by the line passing through codes 120 and
DAC8168 Relative accuracy ±1 ±4 LSB
16200
Differential nonlinearity 14-bit monotonic ±0.1 ±0.5 LSB
Resolution 12 Bits
Measured by the line passing through codes 30 and
DAC7568 Relative accuracy ±0.3 ±1 LSB
4050
Differential nonlinearity 12-bit monotonic ±0.05 ±0.25 LSB
Offset error Extrapolated from two-point line
(1)
, unloaded ±1 ±4 mV
Offset error drift ±0.5 μV/°C
Full-scale error DAC register loaded with all '1's ±0.03 ±0.2 % of FSR
Zero-code error DAC register loaded with all '0's 1 4 mV
Zero-code error drift ±2 μV/°C
Gain error Extrapolated from two-point line
(1)
, unloaded ±0.01 ±0.15 % of FSR
ppm of
Gain temperature coefficient ±1
FSR/°C
OUTPUT CHARACTERISTICS
(2)
AV
DD
≥ 2.7V; grades A and B: maximum output voltage
2.5V when using internal reference
Output voltage range 0 AV
DD
V
AV
DD
≥ 5V; grades C and D: maximum output voltage
5V when using internal reference
DACs unloaded; 1/4 scale to 3/4 scale to ±0.024% 5 10
Output voltage settling time μs
R
L
= 1MΩ 10
Slew rate 0.75 V/μs
R
L
= ∞ 1000
Capacitive load stability pF
R
L
= 2kΩ 3000
Code change glitch impulse 1LSB change around major carry 0.1 nV-s
Digital feedthrough SCLK toggling, SYNC high 0.1 nV-s
R
L
= 2kΩ, C
L
= 470pF, AV
DD
= 5.5V 10 mV
Power-on glitch impulse
R
L
= 2kΩ, C
L
= 470pF, AV
DD
= 2.7V 6 mV
Channel-to-channel dc crosstalk Full-scale swing on adjacent channel 0.1 LSB
R
L
= 2kΩ, C
L
= 420pF, 1kHz full-scale sine wave,
Channel-to-channel ac crosstalk –109 dB
outputs unloaded
DC output impedance At mid-code input 4 Ω
Short-circuit current DAC outputs at full-scale, DAC outputs shorted to GND 11 mA
Power-up time, including settling time Coming out of power-down mode 50 μs
(1) 16-bit: codes 485 and 64714; 14-bit: codes 120 and 16200; 12-bit: codes 30 and 4050
(2) Specified by design or characterization; not production tested.
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Product Folder Link(s): DAC7568 DAC8168 DAC8568