Datasheet

AD5678
Rev. C | Page 3 of 28
SPECIFICATIONS
V
DD
= 4.5 V to 5.5 V, R
L
= 2 kΩ to GND, C
L
= 200 pF to GND, V
REFIN
= V
DD
. All specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
A Grade
1
B Grade
1
Parameter Min Typ Max Min Typ Max Unit Conditions/Comments
STATIC PERFORMANCE
2
AD5678 (DAC C, D, E, F)
Resolution 12 12 Bits
Relative Accuracy ±0.5 ±2 ±0.5 ±1 LSB See Figure 11
Differential Nonlinearity ±0.25 ±0.25 LSB
Guaranteed monotonic by design
(see Figure 12)
AD5678 (DAC A, B, G, H)
Resolution 16 16 Bits
Relative Accuracy ±8 ±32 ±8 ±16 LSB See Figure 5
Differential Nonlinearity ±1 ±1 LSB Guaranteed monotonic by design (see Figure 6)
Zero-Code Error 6 19 6 19 mV All 0s loaded to DAC register (see Figure 17)
Zero-Code Error Drift ±2 ±2 µV/°C
Full-Scale Error −0.2 −1 −0.2 −1 % FSR All 1s loaded to DAC register (see Figure 18)
Gain Error ±1 ±1 % FSR
Gain Temperature
Coefficient
±2.5 ±2.5 ppm Of FSR/°C
Offset Error ±6 ±19 ±6 ±19 mV
DC Power Supply Rejection
Ratio
–80 –80 dB V
DD
± 10%
DC Crosstalk
(External Reference)
10 10 µV
Due to full-scale output change,
R
L
= 2 kΩ to GND or V
DD
5 5 µV/mA Due to load current change
10 10 µV Due to powering down (per channel)
DC Crosstalk
(Internal Reference)
25 25 µV
Due to full-scale output change,
R
L
= 2 kΩ to GND or V
DD
10 10 µV/mA Due to load current change
OUTPUT CHARACTERISTICS
3
Output Voltage Range 0 V
DD
0 V
DD
V
Capacitive Load Stability 2 2 nF R
L
= ∞
10 10 nF R
L
= 2 kΩ
DC Output Impedance 0.5 0.5 Ω
Short-Circuit Current 30 30 mA V
DD
= 5 V
Power-Up Time 4 4 µs Coming out of power-down mode; V
DD
= 5 V
REFERENCE INPUTS
Reference Input Voltage V
DD
V
DD
V ±1% for specified performance
Reference Current 35 55 35 55 µA V
REF
= V
DD
= 5.5 V (per DAC channel)
Reference Input Range 0 V
DD
0 V
DD
V
Reference Input Impedance 14.6 14.6 kΩ Per DAC channel
REFERENCE OUTPUT
Output Voltage
AD5678-2 2.495 2.505 2.495 2.505 V At ambient
Reference TC
3
±5 ±10 ±5 ±10 ppm/°C
Reference Output Impedance 7.5 7.5 kΩ
LOGIC INPUTS
3
Input Current ±3 ±3 µA All digital inputs
Input Low Voltage, V
INL
0.8 0.8 V V
DD
= 5 V
Input High Voltage, V
INH
2 2 V V
DD
= 5 V
Pin Capacitance 3 3 pF