Datasheet

AD5628/AD5648/AD5668 Data Sheet
Rev. G | Page 6 of 32
A Grade
1
B Grade
1
Parameter Min Typ Max Min Typ Max Unit Conditions/Comments
LOGIC INPUTS
3
Input Current ±3 ±3 µA All digital inputs
Input Low Voltage, V
INL
0.8 0.8 V V
DD
= 3 V
Input High Voltage, V
INH
2 2 V V
DD
= 3 V
Pin Capacitance 3 3 pF
POWER REQUIREMENTS
V
DD
2.7 3.6 2.7 3.6 V All digital inputs at 0 or V
DD
,
DAC active, excludes load current
I
DD
(Normal Mode)
4
V
IH
= V
DD
and V
IL
= GND
V
DD
= 2.7 V to 3.6 V 1.0 1.5 1.0 1.5 mA Internal reference off
V
DD
= 2.7 V to 3.6 V 1.8 2.25 1.7 2.25 mA Internal reference on
I
DD
(All Power-Down Modes)
5
V
DD
= 2.7 V to 3.6 V 0.2 1 0.2 1 µA V
IH
= V
DD
and V
IL
= GND
1
Temperature range is −40°C to +105°C, typical at 25°C.
2
Linearity calculated using a reduced code range of AD5628 (Code 32 to Code 4064), AD5648 (Code 128 to Code 16256), and AD5668 (Code 512 to 65024). Output
unloaded.
3
Guaranteed by design and characterization; not production tested.
4
Interface inactive. All DACs active. DAC outputs unloaded.
5
All eight DACs powered down.
AC CHARACTERISTICS
V
DD
= 2.7 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 3.
Parameter
1, 2
Min Typ Max Unit Conditions/Comments
3
Output Voltage Settling Time 2.5 7 µs ¼ to ¾ scale settling to ±2 LSB (16-bit resolution)
Slew Rate 1.2 V/µs
Digital-to-Analog Glitch Impulse 4 nV-s 1 LSB(16-bit resolution) change around major carry
(see Figure 42)
19 nV-s From code 0xEA00 to code 0xE9FF (16-bit resolution)
Digital Feedthrough 0.1 nV-s
Digital Crosstalk 0.2 nV-s
Analog Crosstalk 0.4 nV-s
DAC-to-DAC Crosstalk 0.8 nV-s
Multiplying Bandwidth 320 kHz V
REF
= 2 V ± 0.2 V p-p
Total Harmonic Distortion −80 dB V
REF
= 2 V ± 0.1 V p-p, frequency = 10 kHz
Output Noise Spectral Density 120 nV/√Hz DAC code = 0x8400(16-bit resolution), 1 kHz
100 nV/√Hz DAC code = 0x8400(16-bit resolution), 10 kHz
Output Noise 12 μV p-p 0.1 Hz to 10 Hz, DAC code = 0x0000
1
Guaranteed by design and characterization; not production tested.
2
See the Terminology section.
3
Temperature range is −40°C to +105°C, typical at 25°C.