Datasheet

Data Sheet AD5628/AD5648/AD5668
Rev. G | Page 3 of 32
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
AD5628
Resolution 12 12 Bits
Relative Accuracy ±0.5 ±4 ±0.5 ±1 LSB See Figure 9
Differential Nonlinearity ±0.25 ±0.25 LSB Guaranteed monotonic by design
(see Figure 12)
AD5648
Resolution 14 14 Bits
Relative Accuracy ±2 ±8 ±2 ±4 LSB See Figure 8
Differential Nonlinearity ±0.5 ±0.5 LSB Guaranteed monotonic by design
(see Figure 11)
AD5668
Resolution 16 16 Bits
Relative Accuracy ±8 ±32 ±8 ±16 LSB See Figure 7
Differential Nonlinearity ±1 ±1 LSB Guaranteed monotonic by design
(see Figure 10)
Zero-Code Error 6 19 6 19 mV All 0s loaded to DAC register (see Figure 26)
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 27)
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 Current 40 55 40 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
REFERENCE OUTPUT
Output Voltage
AD56x8-2, AD56x8-3 2.495 2.505 2.495 2.505 V At ambient
Reference TC
3
5 10 5 10 ppm/°C TSSOP
15
5
10
ppm/°C
LFCSP
Reference Output Impedance 7.5 7.5 kΩ