MAX1302 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1302 Datasheet PDF : 31 Pages
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8-/4-Channel, ±VREF Multirange Inputs,
Serial 16-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(AVDD1 = AVDD2 = DVDD = DVDDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, fCLK = 3.5MHz (50% duty cycle),
external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range
(±VREF), CDOUT = 50pF, CSSTRB = 50pF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CS Rise to DOUT Disable
CS Fall to SCLK Rise Setup
CS High Minimum Pulse Width
SCLK Fall to CS Rise Hold
SSTRB Rise to CS Fall Setup
DOUT Rise/Fall Time
SSTRB Rise/Fall Time
SYMBOL
tTR
tCSS
tCSPW
tCSH
CONDITIONS
CL = 50pF
CL = 50pF
MIN TYP MAX UNITS
40
ns
40
ns
40
ns
0
ns
40
ns
10
ns
10
ns
Note 1: Parameter tested at AVDD1 = AVDD2 = DVDD = DVDDO = 5V.
Note 2: See definitions in the Parameter Definitions section at the end of the data sheet.
Note 3: Guaranteed by correlation with single-ended measurements.
Note 4: To ensure external reference operation, VREFCAP must exceed (AVDD1 - 0.1V). To ensure internal reference operation, VREFCAP
must be below (AVDD1 - 0.4V). Bypassing REFCAP with a 0.1µF or larger capacitor to AGND1 sets VREFCAP ≈ 4.096V. The tran-
sition point between internal reference mode and external reference mode lies between the REFCAP buffer disable threshold
minimum and maximum values (Figures 17 and 18).
Note 5: The SCLK duty cycle can vary between 40% and 60%, as long as the tCL and tCH timing requirements are met.
Typical Operating Characteristics
(AVDD1 = AVDD2 = DVDD = DVDDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, fCLK = 3.5MHz (50% duty cycle),
external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range
(±VREF), CDOUT = 50pF, CSSTRB = 50pF; unless otherwise noted.)
ANALOG SUPPLY CURRENT
vs. ANALOG SUPPLY VOLTAGE
2.60
EXTERNAL CLOCK MODE
2.55
TA = +85°C
2.50
2.45
TA = +25°C
2.40
TA = -40°C
2.35
PREAMPLIFIER SUPPLY CURRENT
vs. PREAMPLIFIER SUPPLY VOLTAGE
24
EXTERNAL CLOCK MODE
23
22
21
TA = +85°C
20
19
TA = +25°C
18
17
TA = -40°C
16
DIGITAL SUPPLY CURRENT
vs. DIGITAL SUPPLY VOLTAGE
0.90
EXTERNAL CLOCK MODE
0.85
TA = +85°C
0.80
TA = +25°C
0.75
TA = -40°C
0.70
2.30
4.75 4.85 4.95 5.05 5.15 5.25
AVDD1 (V)
15
4.75 4.85 4.95 5.05 5.15 5.25
AVDD2 (V)
0.65
4.75 4.85 4.95 5.05 5.15 5.25
DVDD (V)
6 _______________________________________________________________________________________
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