Datasheet

REV. B
–2–
AD779–SPECIFICATIONS
AC SPECIFICATIONS
AD779J/A/S AD779K/B/T
Parameter Min Typ Max Min Typ Max Units
SIGNAL-TO-NOISE AND DISTORTION (S/N+D) RATIO
–0.5 dB Input (Referred to 0 dB Input) 78 79 80 81 dB
–20 dB Input (Referred to –20 dB Input) 58 59 60 61 dB
–60 dB Input (Referred to –60 dB Input) 18 19 20 21 dB
TOTAL HARMONIC DISTORTION (THD)
@ +25°C –90 –84 –90 –84 dB
0.003 0.006 0.003 0.006 %
T
MIN
to T
MAX
–88 –82 –88 –82 dB
0.004 0.008 0.004 0.008 %
PEAK SPURIOUS OR PEAK HARMONIC COMPONENT –90 –84 –90 –84 dB
FULL POWER BANDWIDTH 1 1 MHz
FULL LINEAR BANDWIDTH 500 500 kHz
INTERMODULATION DISTORTION (IMD)
2
2nd Order Products –90 –84 –90 –84 dB
3rd Order Products –90 –84 –90 –84 dB
DIGITAL SPECIFICATIONS
Parameter Test Conditions Min Max Units
LOGIC INPUTS
V
IH
High Level Input Voltage 2.0 V
DD
V
V
IL
Low Level Input Voltage 0 0.8 V
I
IH
High Level Input Current V
IN
= V
DD
–10 +10 µA
I
IL
Low Level Input Current V
IN
= 0 V –10 +10 µA
C
IN
Input Capacitance 10 pF
LOGIC OUTPUTS
V
OH
High Level Output Voltage I
OH
= 0.1 mA 4.0 V
I
OH
= 0.5 mA 2.4 V
V
OL
Low Level Output Voltage I
OL
= 1.6 mA 0.4 V
I
OZ
High Z Leakage Current V
IN
= V
DD
–10 +10 µA
C
OZ
High Z Output Capacitance 10 pF
NOTES
1
f
IN
amplitude = –0.5 dB (9.44 V p-p) bipolar mode full scale unless otherwise indicated. All measurements referred to a –0 dB (9.997 V p-p) input signal
unless otherwise noted.
2
f
A
= 9.08 kHz, f
B
= 9.58 kHz, with f
SAMPLE
= 128 kSPS.
Specifications subject to change without notice.
(T
MIN
to T
MAX
, V
CC
= +12 V 6 5%, V
EE
= –12 V 6 5%, V
DD
= +5 V 6 10%, f
SAMPLE
= 128 kSPS,
f
lN
= 10.009 kHz unless otherwise noted)
1
(All device types T
MIN
to T
MAX
, V
CC
= +12 V 6 5%, V
EE
= –12 V 6 5%, V
DD
= +5 V 6 10%)