Datasheet

ADS7229
ADS7230
www.ti.com ............................................................................................................................................................... SBAS437A – MAY 2008 – REVISED JUNE 2009
ELECTRICAL CHARACTERISTICS (continued)
At T
A
= – 40 ° C to +85 ° C, +VA = 2.7V to 3.6V, +VBD = 1.65V to 1.5 × (+VA), V
REF
= 2.5V, f
SAMPLE
= 1MHz for 3V ≤ +VA ≤
3.6V, and f
SAMPLE
= 900kHz for 3V < +VA ≤ 2.7V using external clock, unless otherwise noted.
ADS7229, ADS7230
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER-SUPPLY REQUIREMENTS
+VBD 1.65 +VA 1.5 × (+VA) V
Power-supply
f
s
≤ 1MHz 3 3.6
voltage
+VA V
f
s
≤ 900kHz 2.7 3.6
1MHz sample rate,
4.5 6.0
3V ≤ +VA ≤ 3.6V
900kHz sample rate, mA
4.2
Supply current
2.7V ≤ +VA ≤ 3V
Nap or Auto Nap mode 0.25 0.4
Deep power-down mode 0.001 1 µ A
1MSPS, BVDD = 1.8V 0.1 0.5
Buffer I/O supply current mA
1MSPS, BVDD = 3V 0.5 1.2
AVDD = 3V, BVDD = 1.8V 13.7 18.9
Power dissipation mW
AVDD = 3V, BVDD = 3V 15.0 21.6
TEMPERATURE RANGE
T
A
Operating free-air temperature – 40 +85 ° C
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