Datasheet

AD768–SPECIFICATIONS
Parameter Min Typ Max Units
RESOLUTION 16 Bits
DC ACCURACY
1
Linearity Error
T
A
= +25°C–8±4 +8 LSB
T
MIN
to T
MAX
–8 +8 LSB
Differential Nonlinearity
T
A
= +25°C–6±2 +6 LSB
T
MIN
to T
MAX
–8 +8 LSB
Monotonicity (13-Bit) GUARANTEED OVER RATED SPECIFICATION TEMPERATURE RANGE
ANALOG OUTPUT
Offset Error –0.2 +0.2 % of FSR
Gain Error –1.0 +1.0 % of FSR
Full-Scale Output Current
2
20 mA
Output Compliance Range –1.2 +5.0 V
Output Resistance 0.8 1.0 1.2 kΩ
Output Capacitance 3 pF
REFERENCE OUTPUT
Reference Voltage 2.475 2.5 2.525 V
Reference Output Current
3
+5.0 +15 mA
REFERENCE INPUT
Reference Input Current 1 5 7 mA
Reference Bandwidth
4
Small Signal, IREF = 5 mA ± 0.1 mA 28 MHz
Large Signal, IREF = 4 mA ± 2 mA 9 MHz
TEMPERATURE COEFFICIENTS
Unipolar Offset Drift –5 +5 ppm of FSR/
o
C
Gain Drift
5
–20 +20 ppm of FSR/
o
C
Gain Drift
6
–40 +40 ppm of FSR/
o
C
Reference Voltage Drift –30 +30 ppm/
o
C
DYNAMIC PERFORMANCE
7
Maximum Output Update Rate 30 40 MSPS
Output Settling Time (t
ST
) (to 0.025%) 25 35 ns
Output Propagation Delay (t
PD
)10ns
Glitch Impulse 35 pV-s
Output Rise Time (10% to 90%) 5 ns
Output Fall Time (10% to 90%) 5 ns
Output Noise (DB0–DB15 High, into 50 Ω) 3 nV/√
Hz
Differential Gain Error 0.01 %
Differential Phase Error 0.01 Degree
DIGITAL INPUTS
Logic “1” Voltage 3.5 V
Logic “0” Voltage 1.5 V
Logic “1” Current –10 +10 µA
Logic “0” Current –10 +10 µA
Input Capacitance 10 pF
Input Setup Time (t
S
)10ns
Input Hold Time (t
H
)5ns
Latch Pulse Width (t
LPW
)10 ns
AC LINEARITY
7
Spurious-Free Dynamic Range (SFDR Within a Window)
F
OUT
= 1.002 MHz; CLOCK = 10 MHz; 2 MHz Span 86 79 dB
F
OUT
= 1.002 MHz; CLOCK = 20 MHz; 2 MHz Span 85 dB
F
OUT
= 5.002 MHz; CLOCK = 30 MHz; 10MHz Span 78 dB
Spurious-Free Dynamic Range (SFDR to Nyquist)
F
OUT
= 1.002 MHz; CLOCK = 10 MHz 74 70 dB
F
OUT
= 1.002 MHz; CLOCK = 20 MHz 73 dB
F
OUT
= 5.002 MHz; CLOCK = 30 MHz 67 dB
Total Harmonic Distortion (THD)
F
OUT
= 1.002 MHz; CLOCK = 10 MHz –71 –68 dB
F
OUT
= 1.002 MHz; CLOCK = 20 MHz –66 dB
F
OUT
= 5.002 MHz; CLOCK = 30 MHz –61 dB
REV. B
–2–
(T
MIN
to T
MAX
, V
DD
= +5.0 V, V
EE
= –5.0 V, LADCOM, REFCOM, DCOM = 0 V, IREFIN = 5 mA,
CLOCK = 10 MHz, unless otherwise noted)