Datasheet

ADS1274
ADS1278
www.ti.com SBAS367F –JUNE 2007– REVISED FEBRUARY 2011
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T
A
= –40°C to +105°C, AVDD = +5V, DVDD = +1.8V, IOVDD = +3.3V, f
CLK
= 27MHz, VREFP = 2.5V,
VREFN = 0V, and all channels active, unless otherwise noted.
ADS1274, ADS1278
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLY
AVDD 4.75 5 5.25 V
0.1 ≤ f
CLK
≤ 32.768MHz 1.65 1.8 1.95 V
DVDD
(9)
32.768MHz < f
CLK
≤ 37MHz 2.0 2.1 2.2 V
IOVDD 1.65 3.6 V
AVDD 1 10 μA
Power-down current DVDD 1 15 μA
IOVDD 1 10 μA
ADS1274
High-Speed mode 50 75 mA
High-Resolution mode 50 75 mA
ADS1274
AVDD current
Low-Power mode 23 35 mA
Low-Speed mode 5 9 mA
High-Speed mode 18 24 mA
High-Resolution mode 12 17 mA
ADS1274
DVDD current
Low-Power mode 10 15 mA
Low-Speed mode 2.5 4.5 mA
High-Speed mode 0.15 0.5 mA
High-Resolution mode 0.075 0.3 mA
ADS1274
IOVDD current
Low-Power mode 0.075 0.3 mA
Low-Speed mode 0.02 0.15 mA
High-Speed mode 285 420 mW
High-Resolution mode 275 410 mW
ADS1274
Power dissipation
Low-Power mode 135 210 mW
Low-Speed mode 30 55 mW
ADS1278
High-Speed mode 97 145 mA
High-Resolution mode 97 145 mA
ADS1278
AVDD current
Low-Power mode 44 64 mA
Low-Speed mode 9 14 mA
High-Speed mode 23 30 mA
High-Resolution mode 16 20 mA
ADS1278
DVDD current
Low-Power mode 12 17 mA
Low-Speed mode 2.5 4.5 mA
High-Speed mode 0.25 1 mA
High-Resolution mode 0.125 0.5 mA
ADS1278
IOVDD current
Low-Power mode 0.125 0.5 mA
Low-Speed mode 0.035 0.2 mA
High-Speed mode 530 785 mW
High-Resolution mode 515 765 mW
ADS1278
Power dissipation
Low-Power mode 245 355 mW
Low-Speed mode 50 80 mW
(9) f
CLK
= 37MHz max for High-Speed mode, and 27MHz max for all other modes. See Table 7 for DVDD restrictions in High-Speed mode.
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Product Folder Link(s): ADS1274 ADS1278