Datasheet

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ADS8380
SLAS387A – NOVEMBER 2004 – REVISED DECEMBER 2004
SPECIFICATIONS (continued)
At –40°C to 85°C, +VA = +5 V, +VBD = +5 V or +VBD = +2.7 V, using internal or external reference, f
SAMPLE
= 600 kHz,
unless otherwise noted. (All performance parameters are valid only after device has properly resumed from power down, see
Table 2 .)
ADS8380IB ADS8380I
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX
DYNAMIC CHARACTERISTICS
VIN = 4 V
p-p
at 1 kHz -112 -112
Total harmonic
THD VIN = 4 V
p-p
at 10 kHz -112 -112 dB
distortion
(7) (8)
VIN = 4 V
p-p
at 100 kHz -92 -92
VIN = 4 V
p-p
at 1 kHz 91 91
SNR Signal-to-noise ratio
(7)
VIN = 4 V
p-p
at 10 kHz 91 91 dB
VIN = 4 V
p-p
at 100 kHz 89.5 89.5
VIN = 4 V
p-p
at 1 kHz 91 91
Signal-to-noise
SINAD VIN = 4 V
p-p
at 10 kHz 91 91 dB
+ distortion
(7) (8)
VIN = 4 V
p-p
at 100 kHz 87.5 87.5
VIN = 4 V
p-p
at 1 kHz 119 119
Spurious free dynamic
SFDR VIN = 4 V
p-p
at 10 kHz 117 117 dB
range
(7)
VIN = 4 V
p-p
at 100 kHz 92 92
–3dB Small signal
75 75 MHz
bandwidth
REFERENCE INPUT
Reference voltage input
V
ref
2.5 4.096 4.2 2.5 4.096 4.2 V
range
Resistance
(9)
10 10 M Ω
INTERNAL REFERENCE OUTPUT
V
ref
Reference voltage range IOUT = 0 A, T
A
= 30°C 4.088 4.096 4.104 4.088 4.096 4.104 V
Source current Static load 10 10 µ A
Line regulation +VA = 4.75 V to 5.25 V 2.5 2.5 mV
Drift IOUT = 0 A 25 25 ppm/°C
DIGITAL INPUT/OUTPUT
Logic family CMOS
V
IH
High level input voltage +VBD – 1 +VBD + 0.3 +VBD – 1 +VBD + 0.3 V
V
IL
Low level input voltage –0.3 0.8 –0.3 0.8 V
V
OH
High level output voltage I
OH
= 2 TTL loads +VBD –0.6 +VBD –0.6 V
V
OL
Low level output voltage I
OL
= 2 TTL loads 0.4 0.4 V
Data format: MSB first, 2's complement or straight binary (selectable via the SB/2C pin)
POWER SUPPLY REQUIREMENTS
+VA 4.75 5 5.25 4.75 5 5.25 V
Power supply
voltage
+VBD 2.7 3.3 5.25 2.7 3.3 5.25 V
Supply current, 600-kHz
I
CC
+VA = 5 V 22 25 22 25 mA
sample rate
(10)
POWER DOWN
Supply current, power
I
CC(PD)
2 2 µ A
down
NAP MODE
Supply current, nap
I
CC(NAP)
3 3 mA
mode
Power-up time from nap 300 300 ns
TEMPERATURE RANGE
Specified performance –40 85 –40 85 °C
(7) Measured using analog input circuit in Figure 51 and digital stimulus in Figure 56 and Figure 57 and reference voltage of 4.096 V.
(8) Calculated on the first nine harmonics of the input frequency.
(9) Can vary +/-30%.
(10) This includes only +VA current. With +VBD = 5 V, +VBD current is typically 1 mA with a 10-pF load capacitance on the digital output
pins.
4
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