Datasheet

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ELECTRICAL CHARACTERISTICS
ADS1000
SBAS357A – SEPTEMBER 2006 – REVISED OCTOBER 2007
All specifications at – 40 ° C to +85 ° C, V
DD
= 5V, GND = 0V, and all PGAs, unless otherwise noted.
ADS1000
PARAMETER CONDITIONS MIN TYP MAX UNIT
ANALOG INPUT
Full-Scale Input Voltage (V
IN+
) – (V
IN –
) ± V
DD
/PGA
(1)
V
Analog Input Voltage V
IN+
, V
IN –
to GND GND – 0.2 V
DD
+ 0.2 V
Differential Input Impedance 2.4/PGA M Ω
Common-Mode Input Impedance 8 M Ω
SYSTEM PERFORMANCE
Resolution No Missing Codes 12 Bits
Data Rate 104 128 184 SPS
Integral Nonlinearity (INL) ± 0.1 1 LSB
Offset Error 1 ± 2 LSB
Gain Error 0.01 0.1 %
DIGITAL INPUT/OUTPUT
Logic Level
V
IH
0.7 VDD 6 V
V
IL
GND – 0.5 0.3 V
DD
V
V
OL
I
OL
= 3mA GND 0.4 V
Input Leakage
I
IH
V
IH
= 5.5V 10 μ A
I
IL
V
IL
= GND – 10 μ A
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage V
DD
2.7 5.5 V
Supply Current Power-Down 0.05 2 μ A
Active 90 150 μ A
Power Dissipation μ A
V
DD
= 5.0V 450 750 μ W
V
DD
= 3.0V 210 μ W
(1) Each input, V
IN+
and V
IN –
, must meet the absolute input voltage specifications.
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