MAX12553
14-Bit, 65Msps, 3.3V ADC
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.3V, OV
DD
= 2.0V, GND = 0, REFIN = REFOUT (internal reference), V
IN
= -0.5dBFS, CLKTYP = high, DCE = high, PD = low,
G/T = low, f
CLK
= 65MHz (50% duty cycle), T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INTERNAL REFERENCE (REFIN = REFOUT; V
REFP
, V
REFN
, and V
COM
are generated internally)
REFOUT Output Voltage V
REFOUT
2.002 2.048 2.066 V
COM Output Voltage V
COM
V
DD
/2 1.65 V
Differential Reference Output
Voltage
V
REF
V
REF
= V
REFP
- V
REFN
= V
REFIN
x 3/4 1.536 V
REFOUT Load Regulation 35 mV/mA
REFOUT Temperature Coefficient TC
REF
+50 ppm/°C
Short to V
DD
—sinking 0.24
REFOUT Short-Circuit Current
Short to GND—sourcing 2.1
mA
B U F F ER ED EXT ER N A L R EF ER EN C E ( R EF IN d r iv e n e x t e r n a lly ; V
R EF IN
= 2.0 4 8 V, V
R EF P
, V
R EF N
, a n d V
C OM
a r e g e n e r a t e d in t e r n a lly )
REFIN Input Voltage V
REFIN
2.048 V
REFP Output Voltage V
REFP
(V
DD
/2) + (V
REFIN
x 3/8) 2.418 V
REFN Output Voltage V
REFN
(V
DD
/2) - (V
REFIN
x 3/8) 0.882 V
COM Output Voltage V
COM
V
DD
/2 1.60 1.65 1.70 V
Differential Reference Output
Voltage
V
REF
V
REF
= V
REFP
- V
REFN
= V
REFIN
x 3/4 1.463 1.536 1.601 V
Differential Reference
Temperature Coefficient
±25 ppm/°C
REFIN Input Resistance >50 MΩ
UNBUFFERED EXTERNAL REFERENCE (REFIN = GND; V
REFP
, V
REFN
, and V
COM
are applied externally)
COM Input Voltage V
COM
V
DD
/2 1.65 V
REFP Input Voltage V
REFP
- V
COM
0.768 V
REFN Input Voltage V
REFN
- V
COM
-0.768 V
Differential Reference Input
Voltage
V
REF
V
REF
= V
REFP
- V
REFN
= V
REFIN
x 3/4 1.536 V
REFP Sink Current I
REFP
V
REFP
= 2.418V 1 mA
REFN Source Current I
REFN
V
REFN
= 0.882V 0.7 mA
COM Sink Current I
COM
0.7 mA
REFP, REFN Capacitance 13 pF
COM Capacitance 6pF
CLOCK INPUTS (CLKP, CLKN)
Single-Ended Input High
Threshold
V
IH
CLKTYP = GND, CLKN = GND
0.8 x
V
DD
V
Single-Ended Input Low
Threshold
V
IL
CLKTYP = GND, CLKN = GND
0.2 x
V
DD
V
Differential Input Voltage Swing CLKTYP = high 1.4 V
P-P
Differential Input Common-Mode
Voltage
CLKTYP = high V
DD
/ 2 V
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