MAX12555ETL Ver la hoja de datos (PDF) - Maxim Integrated
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MAX12555ETL Datasheet PDF : 28 Pages
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14-Bit, 95Msps, 3.3V ADC
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.3V, OVDD = 1.8V, GND = 0, REFIN = REFOUT (internal reference), VIN = -0.5dBFS, CLKTYP = high, DCE = high, PD = low,
G/T = low, fCLK = 95MHz (50% duty cycle, 1.4VP-P square wave), TA = -40°C to +85°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
INTERNAL REFERENCE (REFIN = REFOUT; VREFP, VREFN, and VCOM are generated internally)
REFOUT Output Voltage
VREFOUT
1.980 2.048 2.066
V
COM Output Voltage
VCOM VDD / 2
1.65
V
Differential-Reference Output
Voltage
VREF VREF = VREFP - VREFN = VREFIN x 3/4
1.536
V
REFOUT Load Regulation
REFOUT Temperature Coefficient
REFOUT Short-Circuit Current
TCREF
-1.0mA < IREFOUT < +0.1mA
Short to VDD—sinking
Short to GND—sourcing
35
mV/mA
+50
ppm/°C
0.24
mA
2.1
BUFFERED EXTERNAL REFERENCE (REFIN driven externally; VREFIN = 2.048V, VREFP, VREFN, and VCOM are generated internally)
REFIN Input Voltage
VREFIN
2.048
V
REFP Output Voltage
VREFP (VDD / 2) + (VREFIN x 3/8)
2.418
V
REFN Output Voltage
VREFN (VDD / 2) - (VREFIN x 3/8)
0.882
V
COM Output Voltage
VCOM VDD / 2
1.60 1.65 1.70
V
Differential-Reference Output
Voltage
VREF VREF = VREFP - VREN = VREFIN x 3/4
1.454
1.604
V
Differential-Reference
±25
Temperature Coefficient
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
REFN Input Voltage
VREFP - VCOM
VREFN - VCOM
0.768
-0.768
Differential-Reference Input
Voltage
VREF VREF = VREFP - VREFN = VREFIN x 3/4
1.536
REFP Sink Current
IREFP VREFP = 2.418V
1.4
REFN Source Current
IREFN VREFN = 0.882V
1.0
COM Sink Current
ICOM VCOM = 1.650V
1.0
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
Minimum Differential Input
CLKTYP = high
0.2
Voltage Swing
0.2 x
VDD
ppm/°C
MΩ
V
V
V
V
mA
mA
mA
pF
pF
V
V
VP-P
4 _______________________________________________________________________________________
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