Datasheet

MAX11618–MAX11621/MAX11624/MAX11625
10-Bit, 300ksps ADCs
with FIFO and Internal Reference
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ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 2.7V to 3.6V (MAX11619/MAX11621/MAX11625); V
DD
= 4.75V to 5.25V (MAX11618/MAX11620/MAX11624),
f
SAMPLE
= 300kHz, f
SCLK
= 4.8MHz (external clock, 50% duty cycle), V
REF
= 2.5V (MAX11619//MAX11621/MAX11625); V
REF
= 4.096V
(MAX11618/MAX11620/MAX11624), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CONVERSION RATE
External reference 0.8
Power-Up Time t
PU
Internal reference (Note 5) 65
µs
Acquisition Time t
ACQ
0.6 µs
Internally clocked 3.5
Conversion Time t
CONV
Externally clocked (Note 6) 2.7
µs
Externally clocked conversion 0.1 4.8
External Clock Frequency f
SCLK
Data I/O 10
MHz
Aperture Delay 30 ns
Aperture Jitter < 50 ps
ANALOG INPUT
Input Voltage Range Unipolar 0 V
REF
V
Input Leakage Current V
IN
= V
DD
±0.01 ±1 µA
Input Capacitance During acquisition time (Note 7) 24 pF
INTERNAL REFERENCE
MAX11618/MAX11620/MAX11624 4.024 4.096 4.168
REF Output Voltage
MAX11619/MAX11621/MAX11625 2.48 2.50 2.52
V
MAX11618/MAX11620/MAX11624 ±20
REF Temperature Coefficient TC
REF
MAX11619/MAX11621/MAX11625 ±30
ppm/°C
Output Resistance 6.5 k
REF Output Noise 200 µV
RMS
REF Power-Supply Rejection PSRR -70 dB
EXTERNAL REFERENCE
REF Input Voltage Range V
REF
1.0 V
DD
+ 50mV V
V
REF
= 2.5V (MAX11619/MAX11621/
MAX11625); V
REF
= 4.096V
(MAX11618/MAX11620/MAX11624),
f
SAMPLE
= 300ksps
40 100
REF Input Current I
REF
V
REF
= 2.5V (MAX11619/MAX11621/
MAX11625); V
REF
= 4.096V
(MAX11618/MAX11620/MAX11624),
f
SAMPLE
= 0
±0.1 ±5
µA