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ADC12030_14 Datasheet, PDF (10/53 Pages) Texas Instruments – Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
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ADC12030, ADC12032, ADC12034
ADC12038, ADC12H030, ADC12H032
ADC12H034, ADC12H038
SNAS080K – JULY 1999 – REVISED MARCH 2013
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AC Electrical Characteristics (continued)
The following specifications apply for V+ = VA+ = VD+ = +5.0 VDC, VREF+ = +4.096 VDC, VREF− = 0 VDC, 12-bit + sign
conversion mode, tr = tf = 3 ns, fCK = fSK = 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, fCK = fSK
= 5 MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, RS = 25Ω, source impedance for VREF+ and VREF− ≤
25Ω, fully-differential input with fixed 2.048V common-mode voltage, and 10(tCK) acquisition time unless otherwise specified.
Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. (1)
Parameter
Test Conditions
Typical ADC12H030/2/4/8 ADC12030/2/4/8
(2)
Limits (3)
Limits (3)
Units
(Limits)
6 Cycles
Programmed
6(tCK)
6(tCK)
7(tCK)
0.75
6(tCK)
7(tCK)
1.2
(min)
(max)
µs (min)
0.875
1.4
µs (max)
10 Cycles
Programmed
10(tCK)
10(tCK)
11(tCK)
1.25
10(tCK)
11(tCK)
2.0
(min)
(max)
µs (min)
tA
Acquisition Time (4)
18 Cycles
Programmed
18(tCK)
1.375
18(tCK)
19(tCK)
2.25
2.2
18(tCK)
19(tCK)
3.6
µs (max)
(min)
(max)
µs (min)
2.375
3.8
µs (max)
34 Cycles
Programmed
34(tCK)
34(tCK)
35(tCK)
4.25
34(tCK)
35(tCK)
6.8
(min)
(max)
µs (min)
4.375
7.0
µs (max)
tCKAL Self-Calibration Time
4944(tCK)
4944(tCK)
618.0
4944(tCK)
988.8
(max)
µs (max)
tAZ
Auto Zero Time
76(tCK)
76(tCK)
9.5
76(tCK)
15.2
(max)
µs (max)
tSYNC
Self-Calibration or Auto Zero
Synchronization Time from DOR
2(tCK)
2(tCK)
3(tCK)
0.250
2(tCK)
3(tCK)
0.40
(min)
(max)
µs (min)
0.375
0.60
µs (max)
DOR High Time when CS is Low
tDOR
Continuously for Read Data and
Software Power Up/Down
9(tSK)
9(tSK)
1.125
9(tSK)
1.8
(max)
µs (max)
tCONV CONV Valid Data Time
8(tSK)
8(tSK)
1.0
8(tSK)
1.6
(max)
µs (max)
(4) If SCLK and CCLK are driven from the same clock source, then tA is 6, 10, 18 or 34 clock periods minimum and maximum.
10
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Product Folder Links: ADC12030 ADC12032 ADC12034 ADC12038 ADC12H030 ADC12H032 ADC12H034
ADC12H038
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