Datasheet
ADS8329
ADS8330
SLAS516C – DECEMBER 2006 – REVISED JULY 2009 ...................................................................................................................................................
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ELECTRICAL CHARACTERISTICS (continued)
T
A
= – 40 ° C to 85 ° C, +VA = 4.5 V to 5.5 V, +VBD = 1.65 V to 5.5 V, V
REF
= 5 V, and f
SAMPLE
= 1 MHz, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DYNAMIC CHARACTERISTICS
V
IN
= 5 V
PP
at 10 kHz – 102
THD Total harmonic distortion
(4)
dB
V
IN
= 5 V
PP
at 100 kHz – 95
V
IN
= 5 V
PP
at 10 kHz 93
SNR Signal-to-noise ratio ADS8329/30IB 90 92 dB
V
IN
= 5 V
PP
at 100 kHz
ADS8329/30I 90
V
IN
= 5 V
PP
at 10 kHz 92
SINAD Signal-to-noise + distortion dB
V
IN
= 5 V
PP
at 100 kHz 90
V
IN
= 5 V
PP
at 10 kHz 105
SFDR Spurious-free dynamic range dB
V
IN
= 5 V
PP
at 100 kHz 97
– 3dB small-signal bandwidth 30 MHz
CLOCK
Internal conversion clock frequency 21 22.9 24.5 MHz
Used as I/O clock only 50
SCLK external serial clock MHz
As I/O clock and conversion clock 1 42
EXTERNAL VOLTAGE REFERENCE INPUT
Input V
REF
[(REF+) – (REF – )] 5.5 V ≥ +VA ≥ 4.5 V 0.3 +VA
V
REF
reference V
(REF – ) – AGND – 0.1 0.1
range
Resistance
(5)
Reference input 40 k Ω
DIGITAL INPUT/OUTPUT
Logic family — CMOS
V
IH
High-level input voltage 5.5 V ≥ +VBD ≥ 4.5 V 0.65 × (+VBD) +VBD + 0.3 V
0.35 ×
V
IL
Low-level input voltage 5.5 V ≥ +VBD ≥ 4.5 V – 0.3 V
(+VBD)
I
I
Input current V
I
= +VBD or BDGND – 50 50 nA
C
I
Input capacitance 5 pF
5.5 V ≥ +VBD ≥ 4.5 V,
V
OH
High-level output voltage +VBD – 0.6 +VBD V
I
O
= 100 µ A
5.5 V ≥ +VBD ≥ 4.5 V,
V
OL
Low-level output voltage 0 0.4 V
I
O
= 100 µ A
C
O
Output capacitance 5 pF
C
L
Load capacitance 30 pF
Data format — straight binary
POWER-SUPPLY REQUIREMENTS
+VBD 1.65 3.3 5.5 V
Power-supply
voltage
+VA 4.5 5 5.5 V
1-MHz Sample rate 7.0 7.8
mA
Supply current NAP/Auto-NAP mode 0.3 0.5
Deep power-down mode 4 50 nA
Buffer I/O supply current 1 MSPS 1.7 mA
+VA = 5 V, +VBD = 5 V 44 48
Power dissipation mW
+VA = 5 V, +VBD = 1.8 V 35 39.5
TEMPERATURE RANGE
T
A
Operating free-air temperature – 40 +85 ° C
(4) Calculated on the first nine harmonics of the input frequency.
(5) Can vary ± 30%.
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