Datasheet

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ADS8405
SLAS427 – DECEMBER 2004
SPECIFICATIONS (continued)
T
A
= –40 ° C to 85 ° C, +VA = 5 V, +VBD = 3 V or 5 V, V
ref
= 4.096 V, f
SAMPLE
= 1.25 MHz (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INTERNAL REFERENCE OUTPUT
From 95% (+VA), with 1-µF storage
Internal reference start-up time 120 ms
capacitor
V
ref
range IOUT = 0 4.065 4.096 4.13 V
Source current Static load 10 µA
Line regulation +VA = 4.75 V to 5.25 V 0.6 mV
Drift IOUT = 0 36 PPM/C
DIGITAL INPUT/OUTPUT
Logic family - CMOS
V
IH
High-level input voltage I
IH
= 5 µA +VBD – 1 +VBD + 0.3
V
IL
Low-level input voltage I
IL
= 5 µA –0.3 0.8
V
V
OH
High-level output voltage I
OH
= 2 TTL loads +VBD – 0.6 +VBD
V
OL
Low-level output voltage I
OL
= 2 TTL loads 0 0.4
Data format - straight binary
POWER SUPPLY REQUIREMENTS
+VBD 2.7 3 5.25 V
Power supply voltage
+VA 4.75 5 5.25 V
+VA Supply current
(8)
f
s
= 1.25 MHz 31 34 mA
Power dissipation
(8)
f
s
= 1.25 MHz 155 170 mW
TEMPERATURE RANGE
Operating free-air –40 85 ° C
(8) This includes only VA+ current. +VBD current is typically 1 mA with 5-pF load capacitance on output pins.
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