MAX1032 Datasheet, PDF (8/31 Pages) Maxim Integrated Products – 8-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs

8-/4-Channel, ±12V Multirange Inputs,
Serial 14-Bit ADCs
Typical Operating Characteristics (continued)
(AV_DD1 = AV_DD2 = DV_DD = DV_DDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f_CLK = 3.5MHz (50% duty cycle),
external clock mode, V_REF = 4.096V (external reference operation), REFCAP = AV_DD1, maximum single-ended bipolar input range
(±12V), C_DOUT = 50pF, C_SSTRB = 50pF; unless otherwise noted.)
ANALOG SUPPLY CURRENT
vs. CONVERSION RATE
3.0
EXTERNAL CLOCK MODE
2.5
PREAMPLIFIER SUPPLY CURRENT
vs. CONVERSION RATE
25
f_CLK = 7.5MHz (NOTE 6)
20 _{EXTERNAL CLOCK MODE}
2.0
PARTIAL
POWER-DOWN MODE
1.5
1.0
FULL
POWER-DOWN MODE
0.5
15 ^{FULL POWER-DOWN MODE,}
PARTIAL POWER-DOWN MODE
10
5
0
0
50
100
150
200
CONVERSION RATE (ksps)
0
0
50
100
150
200
CONVERSION RATE (ksps)
DIGITAL SUPPLY CURRENT
vs. CONVERSION RATE
1.8
f_CLK = 7.5MHz (NOTE 6)
1.6
1.4
EXTERNAL CLOCK MODE,
1.2 _{PARTIAL POWER-DOWN MODE}
1.0
0.8
0.6
0.4
FULL POWER-DOWN MODE
0.2
0
0
50
100
150
200
CONVERSION RATE (ksps)
DIGITAL I/O SUPPLY CURRENT
vs. CONVERSION RATE
0.6
f_CLK = 7.5MHz (NOTE 6)
0.5
EXTERNAL CLOCK MODE
0.4
0.3
0.2
0.1
0
0
FULL POWER-DOWN MODE,
PARTIAL POWER-DOWN MODE
50
100
150
200
CONVERSION RATE (ksps)
Note 6:
For partial power-down and full power-down modes, external clock mode was used for a burst of continuous samples.
Partial power-down or full power-down modes were entered thereafter. By using this method, the conversion rate was found
by averaging the number of conversions over the time starting from the first conversion to the end of the partial power-down
or full power-down modes.
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