Datasheet

ADS1217
SBAS260C
5
www.ti.com
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage AV
DD
2.7 3.3 V
Analog Current (I
ADC
+ I
VREF
+ I
IDAC
) PDWN = 0, or SLEEP 1 nA
A/D Converter Current (I
ADC
) PGA = 1, Buffer OFF 160 250 µA
PGA = 128, Buffer OFF 450 700 µA
PGA = 1, Buffer ON 230 325 µA
PGA = 128, Buffer ON 850 1325 µA
V
REF
Current (I
VREF
) 250 375 µA
I
IDAC
Current (I
IDAC
) Excludes Load Current 480 675 µA
Digital Current Normal Mode, DV
DD
= 3V 90 200 µA
SLEEP Mode, DV
DD
= 3V 75 µA
Read Data Continuous Mode, DV
DD
= 3V 113 µA
PDWN = 0 1 nA
Power Dissipation PGA = 1, Buffer OFF, REFEN = 0, 0.8 1.4 mW
IDACs OFF, DV
DD
= 3V
NOTES: (1) FSR is Full-Scale Range. (2) ∆V
OUT
is change in digital result. (3) 12pF switched capacitor at f
SAMP
clock frequency.
ADS1217
PARAMETER CONDITIONS MIN TYP MAX UNITS
ELECTRICAL CHARACTERISTICS: AV
DD
= 3V (Cont.)
All specifications at –40°C to +85°C, AV
DD
= +3V, DV
DD
= +2.7V to 5.25V, f
MOD
= 19.2kHz, PGA = 1, Buffer ON, R
DAC
= 75kΩ, f
DATA
= 10Hz, and V
REF
= +1.25V,
unless otherwise specified.
PARAMETER CONDITIONS MIN TYP MAX UNITS
INPUT/OUTPUT
Logic Level
V
IH
0.8 × DV
DD
DV
DD
V
V
IL
(1)
DGND 0.2 × DV
DD
V
V
OH
I
OH
= 1mA DV
DD
– 0.4 V
V
OL
I
OL
= 1mA DGND DGND + 0.4 V
Input Leakage: I
IN
0 < V
I
< DV
DD
–10 10 µA
CLOCK RATES
Master Clock Rate: f
OSC
1 8 MHz
Master Clock Period: t
OSC
1/f
OSC
125 1000 ns
NOTE: (1) Maximum V
IL
for X
IN
is DGND + 0.05V.
ELECTRICAL CHARACTERISTICS: Digital
All specifications at –40°C to +85°C, and DV
DD
= +2.7V to 5.25V.