AD7568–SPECIFICATIONS
Parameter
ACCURACY
Resolution
Relative Accuracy
Differential Nonlinearity
Gain Error
+25°C
T
MIN
to T
MAX
Gain Temperature Coefficient
Output Leakage Current
I
OUT1
@ +25°C
T
MIN
to T
MAX
REFERENCE INPUT
Input Resistance
Ladder Resistance Mismatch
DIGITAL INPUTS
V
INH
, Input High Voltage
V
INL
, Input Low Voltage
I
INH
, Input Current
C
IN
, Input Capacitance
POWER REQUIREMENTS
V
DD
Range
Power Supply Sensitivity
∆Gain/∆V
DD
I
DD
AD7568B
2
12
±
0.5
±
0.9
±
4
±
5
2
5
1
(V
DD
= +4.75 V to +5.25 V; I
OUT1
= I
OUT2
= O V; V
REF
= +5 V; T
A
= T
MIN
to T
MAX
,
unless otherwise noted)
Units
Bits
LSB max
LSB max
LSBs max
LSBs max
ppm FSR/°C typ
ppm FSR/°C max
Test Conditions/Comments
1 LSB = V
REF
/2
12
= 1.22 mV when V
REF
= 5 V
All Grades Guaranteed Monotonic over Temperature
10
200
5
9
2
2.4
0.8
±
1
10
4.75/5.25
–75
300
3.5
nA max
nA max
kΩ min
kΩ max
% max
V min
V max
µA
max
pF max
V min/V max
dB typ
µA
max
mA max
See Terminology Section
Typical Input Resistance = 7 kΩ
Typically 0.6%
V
INH
= 4.0 V min, V
INL
= 0.4 V max
V
INH
= 2.4 V min, V
INL
= 0.8 V max
AC PERFORMANCE CHARACTERISTICS
Parameter
DYNAMIC PERFORMANCE
Output Voltage Settling Time
Digital to Analog Glitch Impulse
Multiplying Feedthrough Error
Output Capacitance
Channel-to-Channel Isolation
Digital Crosstalk
Digital Feedthrough
Total Harmonic Distortion
Output Noise Spectral Density
@ 1 kHz
AD7568B
2
500
40
–66
60
30
–76
40
40
–83
20
(These characteristics are included for Design Guidance and are not subject
to test. DAC output op amp is AD843.)
Test Conditions/Comments
To 0.01% of Full-Scale Range. DAC Latch Alternately
Loaded with All 0s and All 1s.
Measured with V
REF
= 0 V. DAC Register Alternately
Loaded with All 0s and All 1s.
V
REF
= 20 V pk-pk, 10 kHz Sine Wave. DAC Latch
Loaded with All 0s.
All 1s Loaded to DAC.
All 0s Loaded to DAC.
Feedthrough from Any One Reference to the Others
with 20 V pk-pk, 10 kHz Sine Wave Applied.
Effect of all 0s to all 1s Code Transition on
Nonselected DACs.
Feedthrough to Any DAC Output with
FSIN
High
and Square Wave Applied to SDIN and SCLK.
V
REF
= 6 V rms, 1 kHz Sine Wave.
All 1s Loaded to the DAC. V
REF
= 0 V. Output Op
Amp is AD OP07.
Units
ns typ
nV–s typ
dB max
pF max
pF max
dB typ
nV–s typ
nV–s typ
dB typ
nV/√Hz
NOTES
1
Temperature range as follows: B Version: –40°C to +85°C.
2
All specifications also apply for V
REF
= +10 V, except relative accuracy which degrades to
±
1 LSB.
Specifications subject to change without notice.
–2–
REV. B
AD [ ANALOG DEVICES ]
