MAX11626_1110 Datasheet, PDF (5/22 Pages) Maxim Integrated Products – 12-Bit, 300ksps ADCs with FIFO and Internal Reference

12-Bit, 300ksps ADCs
with FIFO and Internal Reference
TIMING CHARACTERISTICS (Figure 1)
(V_DD = +2.7V to +3.6V (MAX11627/MAX11629/MAX11633); V_DD = +4.75V to +5.25V (MAX11626/MAX11628/MAX11632), f_SAMPLE =
300kHz, f_SCLK = 4.8MHz (50% duty cycle), V_REF = 2.5V (MAX11627//MAX11629/MAX11633); V_REF = 4.096V (MAX11626/
MAX11628/MAX11632), T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Externally clocked conversion
208
SCLK Clock Period
t_CP
Data I/O
ns
100
SCLK Pulse Width High
SCLK Pulse Width Low
SCLK Fall to DOUT Transition
CS Rise to DOUT Disable
CS Fall to DOUT Enable
DIN to SCLK Rise Setup
SCLK Rise to DIN Hold
CS Low to SCLK Setup
CS High to SCLK Setup
CS High After SCLK Hold
CS Low After SCLK Hold
CNVST Pulse Width Low
t_CH
t_CL
t_DOT
t_DOD
t_DOE
t_DS
t_DH
t_CSS0
t_CSS1
t_CSH1
t_CSH0
t_CSPW
C_LOAD = 30pF
C_LOAD = 30pF
C_LOAD = 30pF
CKSEL = 00
CKSEL = 01
40
ns
40
ns
40
ns
40
ns
40
ns
40
ns
0
ns
40
ns
40
ns
0
ns
0
4
µs
40
ns
1.4
µs
CS or CNVST Rise to EOC
Low (Note 7)
Voltage conversion
Reference power-up
7
µs
65
Note 7: This time is defined as the number of clock cycles needed for conversion multiplied by the clock period. If the internal refer-
ence needs to be powered up, the total time is additive.
Typical Operating Characteristics
(V_DD = +3V, V_REF = +2.5V, f_SCLK = 4.8MHz, C_LOAD = 30pF, T_A = +25°C, unless otherwise noted.)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
INTEGRAL NONLINEARITY
vs. OUTPUT CODE
MAX11626/MAX11628/MAX11632
f_SAMPLE = 300ksps
1024
2048
3072
4096
OUTPUT CODE (DECIMAL)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
INTEGRAL NONLINEARITY
vs. OUTPUT CODE
MAX11627/MAX11629/MAX11633
f_SAMPLE = 300ksps
1024
2048
3072
4096
OUTPUT CODE (DECIMAL)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
MAX11626/MAX11628/MAX11632
f_SAMPLE = 300ksps
1024
2048
3072
4096
OUTPUT CODE (DECIMAL)
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