Datasheet

Temperature( C)°
ENOB(Bits)
-15-40
5V
3V
85
10 35 60
12.50
12.25
12.00
11.75
11.50
+VASupplyVoltage(V)
InternalClockFrequency(MHz)
24.0
23.5
23.0
22.5
22.0
21.5
21.0
2.5 5.53.0 3.5 4.0 4.5 5.0
Temperature( C)°
InternalClockFrequency(MHz)
-15
24.0
23.5
23.0
22.5
22.0
21.5
22.0
-40 85
10 35 60
+VASupplyVoltage(V)
AnalogSupplyCurrent(mA)
7.0
6.5
6.0
5.5
5.0
4.5
4.0
2.5 5.53.0 3.5 4.0 4.5 5.0
f =1MSPS
S
+VASupplyVoltage(V)
AnalogSupplyCurrent( A)m
400
360
320
280
240
200
2.5 5.53.0 3.5 4.0 4.5 5.0
NAPMode
+VASupplyVoltage(V)
AnalogSupplyCurrent(nA)
10
8
6
4
2
0
2.5 5.53.0 3.5 4.0 4.5 5.0
PDMode
ADS7229
ADS7230
www.ti.com ............................................................................................................................................................... SBAS437A – MAY 2008 – REVISED JUNE 2009
TYPICAL CHARACTERISTICS (continued)
At – 40 ° C to +85 ° C, V
REF
[(REF+) – (REF – )] = 5V when +VA = +VBD = 5V or V
REF
[(REF+) – (REF – )] = 2.5V when +VA =
+VBD = 3V, f
SCLK
= 42MHz, or V
REF
= 2.5 when +VA = +VBD = 2.7V, f
SCLK
= 37.8MHz, and f
I
= dc for dc curves, f
I
= 100kHz
for ac curves with 5V supply, and f
I
= 10kHz for ac curves with 3V supply, unless otherwise noted.
EFFECTIVE NUMBER OF BITS INTERNAL CLOCK FREQUENCY
vs FREE-AIR TEMPERATURE vs SUPPLY VOLTAGE
Figure 30. Figure 31.
INTERNAL CLOCK FREQUENCY ANALOG SUPPLY CURRENT
vs FREE-AIR TEMPERATURE vs SUPPLY VOLTAGE
Figure 32. Figure 33.
ANALOG SUPPLY CURRENT ANALOG SUPPLY CURRENT
vs SUPPLY VOLTAGE vs SUPPLY VOLTAGE
Figure 34. Figure 35.
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