Electrical characteristics (continued) – Rainbow Electronics MAX12553 User Manual
Page 4
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
M
Ω
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
6
pF
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