Datasheet

0 5 10 15 20 25
V
S
V 0.1
S
S
S
S
S
-
-
-
-
-
V 0.2
V 0.3
V 0.4
V 0.5
0.5
0.4
0.3
0.2
0.1
0
V
S
= 2.7V
V = 2.7V
S
V = 5V
S
V = 5V
S
I (mA)
LOAD
Temperature ( C)°
-55 -35 -15 5 25 45 65 85 105 125 145
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
All Blocks Enabled
Ref, Exc, and ADC Disabled
I (mA)
Q
-100 -80 -60 -40 -20 0 20 40 60 80 100
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
Total Error (% of FS)
Input Signal (% FS of V )
REF
Reg 6 = 0433h
V = 2.5V Internal
15-Bit + Sign
REF
Reg 6 = 0430h
V = 2.5V Internal
11-Bit + Sign
REF
Reg 6 = 0403h
V = 5V Internal
15-Bit + Sign
REF
Reg 6 = 0503h
V = 2.048V Internal
(Temp ADC Internal)
15-Bit + Sign
REF
Actual Die Temperature ( C)°
-55 -35 -15 5 25 45 65 85 105 125 145
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
Temp ADC Error ( C)°
1s/div
50 V/divm
Measured After Bandpass Filter
0.1Hz Second-Order High-Pass
10Hz Fourth-Order Low-Pass
V = 4.096V
REF
1s/div
1mV/div
Measured After Bandpass Filter
0.1Hz Second-Order High-Pass
10Hz Fourth-Order Low-Pass
V = +61mV
CLK_CFG = 00 (default)
IN
G = 1152
Coarse Offset = 59mV-
PGA309
SBOS292C –DECEMBER 2003–REVISED JANUARY 2011 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, V
SA
= V
SD
= +5V (V
SA
= V
SUPPLY ANALOG
, V
SD
= V
SUPPLY DIGITAL
, V
SA
must equal V
SD
), GND
D
= GND
A
= 0, and
V
REF
= REF
IN
/REF
OUT
= +5V, unless otherwise noted.
V
OUT
SWING TO RAIL vs I
LOAD
I
Q
vs TEMPERATURE
Figure 7. Figure 8.
TEMPERATURE ADC ERROR (INTERNAL MODE) TEMPERATURE ADC ERROR (EXTERNAL MODES)
Figure 9. Figure 10.
V
REF
NOISE V
OUT
NOISE
(0.1Hz TO 10Hz) (0.1Hz TO 10Hz PEAK-TO-PEAK NOISE)
Figure 11. Figure 12.
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