MAX1211 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1211 Datasheet PDF : 30 Pages
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65Msps, 12-Bit, IF Sampling ADC
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference), CREFOUT = 0.1µF, CL ≈ 5pF at digital outputs, VIN = -
0.5dBFS, CLKTYP = high, DCE = high, PD = low, G/T = low, fCLK = 65MHz (50% duty cycle), CREFP = CREFN = 0.1µF, 1µF in parallel with
10µF between REFP and REFN, CCOM = 0.1µF in parallel with 2.2µF to GND, TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Source
1.0
Maximum COM Current
ICOM
Sink
0.4
REFIN Input Resistance
>50
UNBUFFERED EXTERNAL REFERENCE (REFIN = GND, VREFP, VREFN, and VCOM are applied externally)
COM Input Voltage
VCOM VDD / 2
1.65
REFP Input Voltage
VREFP - VCOM
0.512
REFN Input Voltage
VREFN - VCOM
-0.512
Differential Reference Input
Voltage
VREF
VREF = VREFP - VREFN
1.024
REFP Sink Current
IREFP VREFP = 2.162V
1.1
REFN Source Current
IREFN VREFN = 1.138V
1.1
COM Sink Current
ICOM
0.3
REFP, REFN Capacitance
13
COM Capacitance
6
CLOCK INPUTS (CLKP, CLKN)
Single-Ended Input High
Threshold
VIH
CLKTYP = GND, CLKN = GND
0.8 x
VDD
Single-Ended Input Low
Threshold
VIL
CLKTYP = GND, CLKN = GND
Differential Input Voltage Swing
CLKTYP = high
1.4
Differential Input Common-Mode
Voltage
CLKTYP = high
VDD / 2
Minimum Clock Duty Cycle
DCE = OVDD
20
DCE = GND
45
Maximum Clock Duty Cycle
DCE = OVDD
80
DCE = GND
65
Input Resistance
RCLK Figure 4
5
Input Capacitance
CCLK
2
DIGITAL INPUTS (CLKTYP, G/T, PD)
Input High Threshold
VIH
0.8 x
OVDD
MAX
0.2 x
VDD
UNITS
mA
MΩ
V
V
V
V
mA
mA
mA
pF
pF
V
V
VP-P
V
%
%
kΩ
pF
V
Input Low Threshold
Input Leakage Current
Input Capacitance
VIL
CDIN
VIH = OVDD
VIL = 0
0.2 x
OVDD
V
±5
µA
±5
5
pF
4 _______________________________________________________________________________________
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