Datasheet

MAX1027/MAX1029/MAX1031
10-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
_______________________________________________________________________________________ 5
Note 10: 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. The internal reference is always used for temperature measure-
ments..
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Externally clocked conversion 208
SCLK Clock Period t
CP
Data I/O 100
ns
SCLK Duty Cycle t
CH
40 60 %
SCLK Fall to DOUT Transition t
DOT
C
LOAD
= 30pF 40 ns
CS Rise to DOUT Disable t
DOD
C
LOAD
= 30pF 40 ns
CS Fall to DOUT Enable t
DOE
C
LOAD
= 30pF 40 ns
DIN to SCLK Rise Setup t
DS
40 ns
SCLK Rise to DIN Hold t
DH
0ns
CS Fall to SCLK Rise Setup Time t
CSS0
40 ns
CS Fall to SCLK Rise Hold Time t
CSH0
0ns
CS Rise to SCLK Rise Hold Time t
CSH1
0ns
CS Rise to SCLK Rise Setup Time t
CSS1
40 ns
CKSEL = 00, CKSEL = 01 (temp sense) 40 ns
CNVST Pulse Width t
CSW
CKSEL = 01 (voltage conversion) 1.4 μs
t
T S
Temp sense 56
Voltage conversion 7
CS or CNVST Rise to EOC
Low (Note 10)
t
R P
Reference power-up 65
μs
TIMING CHARACTERISTICS (Figure 1)
INTEGRAL NONLINEARITY
vs. OUTPUT CODE
MAX1027/29/31 toc01
OUTPUT CODE (DECIMAL)
INL (LSB)
768512256
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
01024
f
SAMPLE
= 300ksps
DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
MAX1027/29/31 toc02
OUTPUT CODE (DECIMAL)
DNL (LSB)
768512256
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0 1024
f
SAMPLE
= 300ksps
SINAD vs. FREQUENCY
MAX1027/29/31 toc03
FREQUENCY (kHz)
SINAD (dB)
1001011k
56
57
58
59
60
61
62
63
64
65
55
Typical Operating Characteristics
(V
DD
= +3V, V
REF
= +2.5V, f
SCLK
= 4.8MHz, C
LOAD
= 30pF, T
A
= +25°C, unless otherwise noted.)