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| MAX11626 Datasheet, PDF (3/22 Pages) Maxim Integrated Products – 12-Bit, 300ksps ADCs with FIFO and Internal Reference | |||
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12-Bit, 300ksps ADCs
with FIFO and Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V (MAX11627/MAX11629/MAX11633); VDD = +4.75V to +5.25V (MAX11626/MAX11628/MAX11632), fSAMPLE =
300kHz, fSCLK = 4.8MHz (50% duty cycle), VREF = 2.5V (MAX11627//MAX11629/MAX11633); VREF = 4.096V (MAX11626/MAX11628/
MAX11632), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
CONVERSION RATE
Power-Up Time
External reference
tPU
Internal reference (Note 3)
0.8
µs
65
Acquisition Time
tACQ
0.6
µs
Conversion Time
tCONV
Internally clocked
Externally clocked (Note 4)
3.5
µs
2.7
External Clock Frequency
fSCLK
Externally clocked conversion
Data I/O
0.1
4.8
MHz
10
Aperture Delay
30
ns
Aperture Jitter
< 50
ps
ANALOG INPUT
Input Voltage Range
Input Leakage Current
Input Capacitance
Unipolar
VIN = VDD
During acquisition time (Note 5)
0
VREF
V
±0.01 ±1
µA
24
pF
INTERNAL REFERENCE
REF Output Voltage
MAX11626/MAX11628/MAX11632
MAX11627/MAX11629/MAX11633
4.024 4.096 4.168
V
2.48 2.50 2.52
REF Temperature Coefficient
TCREF
MAX11626/MAX11628/MAX11632
MAX11627/MAX11629/MAX11633
±20
ppm/°C
±30
Output Resistance
6.5
k
REF Output Noise
200
µVRMS
REF Power-Supply Rejection
PSRR
-70
dB
EXTERNAL REFERENCE INPUT
REF Input Voltage Range
VREF
1.0
VDD + 50mV V
REF Input Current
VREF = 2.5V (MAX11627/MAX11629/
MAX11633); VREF = 4.096V
(MAX11626/MAX11628/MAX11632),
IREF
fSAMPLE = 300ksps
VREF = 2.5V (MAX11627/MAX11629/
MAX11633); VREF = 4.096V
(MAX11626/MAX11628/MAX11632),
fSAMPLE = 0
40
100
µA
±0.1 ±5
_______________________________________________________________________________________ 3
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